Rotary cutting type cut-to-length device for plate of moderate thickness

Abstract

The invention discloses a rotary cutting type cut-to-length device for a plate of moderate thickness. The rotary cutting type cut-to-length device for the plate of moderate thickness at least comprises a frame, a panel, an upper knife rest, a lower knife rest, a shear blade clearance adjusting mechanism, a pinch roll, an over-balanced swinging roller bed mechanism and a shear gauge. The upper and lower knife rests are arranged in the front part of the shear gauge device relatively. The shear gauge is arranged in the rear part of the shear gauge device. The shear blade clearance adjusting mechanism is installed outside the upper knife rest, the upper knife rest can be moveably arranged between the shear blade clearance adjusting mechanism and the frame, the over-balanced swinging roller bed mechanism is arranged close to the lower knife rest, and the frame consists of two integrally cast and formed vertical plates which are oppositely arranged. Tool changing windows which are circumferentially closed are arranged in positions corresponding to an upper blade of the upper knife rest and a lower blade of the lower knife rest on the surface of the vertical plates. The rotary cutting type cut-to-length device for the plate of moderate thickness provided by the invention has the advantages of strong rigidity and small deformation of the frame, high shearing quality, good lubricating effect, avoids mutual shearing of the upper and lower shear blades and can recycle the lubricating oil.

Description

technical field [0001] The invention relates to a steel rolling machine, in particular to a medium-thick plate rolling-cutting cut-to-length shearing device for transversely shearing a medium-thick plate. Background technique [0002] In recent years, the output of my country's medium and heavy plates has increased year after year. As we all know, in the process of manufacturing medium and heavy plates, shearing medium and heavy plates is an extremely important process step. The existing shearing equipment mainly includes oblique blade shears and rolling shears to length. The existing oblique blade shears cannot meet the needs of steel rolling mills for the quality, variety and output of medium-thick steel plates due to defects such as rough incisions, unevenness, and low shearing efficiency. Therefore, the oblique blade shears have gradually been replaced by rolling cut-to-length shears. Chinese utility model patent (patent number is 02203540.0) just discloses a kind of r...

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Problems solved by technology

However, the centralized transmission method takes up a lot of space and is difficult to maintain. If one of the rollers and the gear box fail, the entire swing roller table will not work, and the efficiency of the equipment is low. The steel plate is used for support, and the bending deformation of the steel plate due to its own weight affects the quality of the cut and affects the stability of the shearing machine equipment

[0005] 3. The cutting edge gap adjustment mechanism of the existing rolling cut-to-length shears adopts electrical control, and its detection method is also detected by electrical components. Although the degree of automation is high, the electrical components are often affected by the surrounding environment. In the event of further failure, the gap between the upper and lower tool holders may become negative, resulting in mutual shearing accidents between the upper and lower cutting edges.

And the lubrication of the transmission part of the upper tool rest is an important condition to ensure its normal operation. The lubrication of the existing upper tool rest transmission part adopts dry oil lubrication. Although the structure is relatively simple, the lubrication effect is relatively poor, and because the dry oil lubrication does not Set up an oil return system, so the waste dry oil needs to be cleaned regularly, which is time-consuming and laborious, and it is easy to contaminate the steel plate

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