Working Principle of the Straightening Machine
The straightening cylinder is where the steel bar enters after unwinding from the coil rack. By adjusting the screws on the straightening blocks, they can be fixed at different eccentric positions to accommodate steel bars of various specifications and properties.
There are three straightening curve profiles available: Gaussian, sine, and cosine, each optimized for specific bar diameters and yield strengths.
After processing multiple coils, the straightening blocks will wear down. At this point, re-adjusting the eccentricity is necessary to maintain straightening accuracy. The main gearbox and traction rollers are key components. The gearbox reduces the motor speed through mechanical transmission and drives the upper traction roller (active roller). During feeding, an eccentric handle is turned to lift the upper roller, allowing the bar to pass through the V-shaped groove between the upper and lower rollers (passive roller). Reversing the handle clamps the bar between the rollers. The clamping force, regulated by a spring connected to the upper roller's linkage, determines the traction force. This force must be adjusted according to the bar's diameter and material to ensure proper grip while allowing controlled slippage during cutting to prevent continuous shearing. Proper spring tension adjustment is critical for normal operation.
Also known as a wire straightener, this machine derives its name from its primary application in straightening steel wires. Its main components include the straightening cylinder, traction mechanism, cutting mechanism, length-setting rack, frame, and drive system.
Operational Process
1.Component Selection: Choose appropriate straightening blocks, traction roller grooves, and transmission speeds based on the bar diameter. The block aperture should be 2–5mm larger than the bar diameter, and the roller groove width should match the bar diameter.
2.Straightening Block Adjustment: In a typical five-block configuration, blocks 1 and 5 are centered, while the middle three are offset. Start with a 3mm offset and gradually increase it until the bar is fully straightened.
3.Length Calibration: After cutting 3–4 bars, verify the length accuracy and adjust the limit switch or length gauge as needed.
4.Safety Precautions:
Never thread bars until the straightening blocks are secured and the protective cover is in place.
Keep the machine clear of objects to prevent vibrations from causing debris to fall into moving parts.
Maintain distance between hands and rollers during operation. Do not adjust rollers or wear gloves while the machine is running.
5. End-of-Bar Handling: Stand clear of the bar's path when nearing the end of processing to avoid injury from whipping. Use low-speed settings for bars shorter than 2m or thicker than 9mm.
This translation maintains technical accuracy while ensuring clarity for international users. Operational steps are presented sequentially, and safety guidelines are emphasized to align with global industrial standards.
