Full-hydraulic four-roller numerical control rolling machine

Abstract

The invention discloses a full-hydraulic four-roller numerical control rolling machine. The rolling machine comprises a machine body, and a four-roller synchronous rolling and pressing mechanism, a side edge automatic feeding mechanism, a discharging mechanism and an electric system are arranged in the machine body. The four-roller synchronous rolling and pressing mechanism comprises an upper roller device, a lower roller device and a left and right side roller device, and the side edge automatic feeding mechanism is arranged at the side of the four-roller synchronous rolling and pressing mechanism. The rolling machine has the advantages of being high in sensitivity and stability and having a pre-bending function, the connection tightness of the ends of all rollers is high, gap deviation caused by long-time use is eliminated, a surplus straight edge becomes smaller, automatic feeding and discharging are achieved, and synchronism among the rollers is high.

Description

technical field [0001] The invention relates to a plate rolling machine, in particular to a fully hydraulic four-roller numerically controlled plate rolling machine. Background technique [0002] The plate rolling machine is the main equipment for producing cylindrical or arc-shaped workpieces by passing the plate through the rotating roller shaft, among which the three-roll plate rolling machine and the four-roll plate rolling machine are more commonly used. The working principle of the above-mentioned plate rolling machine is as follows: it consists of an upper roller located above and two or three passive rollers located below the upper roller that can move up and down. The upper roller is driven by a motor and driven by it to rotate, and the passive roller Generally, the lift is driven by the lifting hydraulic cylinder, and the gap between the upper roller and the passive roller is adjusted through the lifting and lowering action of the lifting hydraulic cylinder. In th...

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Problems solved by technology

[0003] In the process of rolling cylindrical or arc-shaped workpieces, the above-mentioned plate rolling machines have many defects. For example, manual feeding is generally used, that is, manual feeding and adjustment of the position of the sheet material. This manual method is often due to The deviation of the feeding angle causes the scrapping of the workpiece, low production efficiency and high cost; in addition, the rolled and formed sheet is generally discharged manually, that is, the rolled and formed sheet is manually discharged from the upper roller For large workpieces, it is generally necessary to use lifting tools to smoothly discharge the material, which is labor-intensive and low in production efficiency.

[0004] Moreover, in the existing rolling process, the synchronization of the four rollers cannot be well controlled, so that in the rolling process, some of the rolling pressure will be excessive and some of the rolling pressure will be insufficient, and finally the rolled plate formed by rolling will have texture The finer wrinkles on the plate will affect the plate rolling quality of the plate rolling machine, and when there is a large synchronization deviation, the plate rolling distortion is likely to occur

[0005] In addition, the existing plate rolling machine is not tight enough in the connection setting of the upper pressure roller, the lower pressure roller and the side roller, and the stability of the connection is poor, so that the deviation of the rolling pressure gap will gradually form during long-term use, resulting in the overall The mass displacement angle of the rolling press is affected

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