Cross cut shears for slitting and leveling flat steel

Abstract

The invention discloses equipment for a flat steel shaping and machining set, in particular to cross cut shears for slitting and leveling flat steel. The cross cut shears comprise a stand, wherein the stand is provided with a hold-down hydraulic cylinder; the two sides of the stand are provided with upright posts; the upright posts are provided with hydraulic pressing mechanisms; a piston rod of the hold-down hydraulic cylinder is connected to a sliding stand; the sliding stand is arranged on a guide post; the two ends of the guide post are connected to the stand; the stand is provided with a lower knife rest; the lower knife rest is provided with a lower blade; the lower end of the sliding stand is provided with an upper blade; the upper blade consists of two blades which are arranged in a reverse V shape; the hydraulic pressing mechanism comprises a fixed cross beam; the fixed cross beam is provided with a pressing hydraulic cylinder; the two sides of the pressing hydraulic cylinder on the fixed cross beam are provided with guide rods; the lower parts of the pressing hydraulic cylinder and the guide rods on the two sides are provided with pressing blocks; and the lower plane of the pressing block is lower than the lower end of the upper blade. Because the upper blade is arranged by adopting a reverse V-shaped design, a plate is uniformly stressed during the shearing process and the problems of easy lateral bending of a spring, easy pass-line deflection of the plate and the like of a conventional normal oblique blade cutting mechanism during the pressing of the spring are prevented; and thus the working stability of the cross cut shears is ensured and the shearing quality and the service life of the blade are greatly improved.

Description

technical field [0001] The invention relates to equipment of a flat steel forming processing unit, in particular to a hydraulic transverse shearing machine. Background technique [0002] The existing hydraulic shearing machine is an ordinary inclined blade shear. Under the driving action of the hydraulic cylinder, the plate is pressed tightly by the spring structure, and the upper blade and the lower blade are cut to realize the cutting process of the plate. The disadvantage of this structure is Yes, in the process of frequent up and down reciprocating shearing, when the spring fails due to fatigue or the axial load is too large, the spring will bend sideways and lose stability, so that the ordinary inclined blade shears When cutting, it is easier to deviate in the direction of the bevel, which affects the cutting quality and damages the upper blade. Contents of the invention [0003] In view of the above problems, the present invention provides a shearing machine for sli...

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Problems solved by technology

[0002] The existing hydraulic shearing machine is an ordinary inclined blade shear. Under the driving action of the hydraulic cylinder, the plate is pressed tightly by the spring structure, and the upper blade and the lower blade are cut to realize the cutting process of the plate. The disadvantage of this structure is Yes, in the process of frequent up and down reciprocating shearing, when the spring fails due to fatigue or the axial load is too large, the spring will bend sideways and lose stability, so that the ordinary inclined blade shears When cutting, it is easier to deviate in the direction of the bevel, which affects the cutting quality and damages the upper blade

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