Lower knife mechanism for plate shearing of decoiler machine

Abstract

The invention relates to the technical field of sheet metal machining, and discloses a lower knife mechanism for plate shearing of a decoiler machine. The lower knife mechanism comprises a portal frame, wherein an extrusion table is arranged in the middle of the portal frame, a steel plate is arranged in the middle of the extrusion table, a transverse plate is fixedly connected to the upper end ofthe portal frame, and a mounting base is fixedly connected to the upper surface of the transverse plate. Lifting mechanisms are arranged on the two sides, close to the portal frame, in the mounting base, half gears are arranged in the lifting mechanisms, outer gear rings are arranged outside the half gears, connecting rods are fixedly connected to the lower ends of the outer gear rings, buffers are connected to the outer portions of the upper ends of the connecting rods in a sleeving mode, driving shafts are coupled to the centers of the two half gears, and tool aprons are movably connected to the lower ends of the connecting rods. According to the lower knife mechanism for plate shearing of the decoiler machine, the driving shafts rotate to drive the half gears to periodically mesh withthe two sides of the outer gear rings, vertical reciprocating of the outer gear rings is achieved through mechanical rotation, then a shear knife is driven by the connecting rods to vertically reciprocate to cut the steel plate, and compared with traditional hydraulic lifting, the speed is higher.

Description

technical field [0001] The invention relates to the technical field of sheet metal processing, in particular to a lower knife mechanism for shearing plates of a leveling machine. Background technique [0002] The leveling machine is a device that combines strip leveling and shearing. It mainly cuts the coiled strip into strips after stress relief. However, in the existing shearing process, the lower knife is mainly completed by a hydraulic mechanism. Although telescoping can increase sufficient power, when it completes the reciprocating stroke after cutting the knife, it consumes a lot of power, slows down, and has a short continuous working life. When working with high loads such as shearing plates, the telescopic rod is often deformed due to transverse shear stress. , so the maintenance and repair of the hydraulic lower knife mechanism are very frequent, time-consuming and labor-intensive. Contents of the invention [0003] (1) Solved technical problems [0004] Aiming...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a knife lowering mechanism for the shearing plate of the leveling machine, which has the advantages of faster reciprocating knife lowering speed, higher efficiency and longer life, and solves the problem of the existing hydraulic knife lowering efficiency. Low, short life issues

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