Amorphous alloy strip cutting tool and amorphous alloy slitting device

Abstract

The invention discloses an amorphous alloy strip cutting tool and an amorphous alloy slitting device. The amorphous alloy strip cutting tool comprises an upper cutter shaft and a lower cutter shaft which are parallel, wherein a cutting disc and an elastomer platen are arranged on each of the upper cutter shaft and the lower cutter shaft; the cutting discs on the upper cutter shaft and the lower cutter shaft are alternately arranged; the elastomer platen on the upper cutter shaft is opposite to the cutting disc on the lower cutter shaft; the elastomer platen on the lower cutter shaft is opposite to the cutting disc on the upper cutter shaft; and the cutting disc and the elastomer platen which are opposite form a strip bearing clamping mechanism. The amorphous alloy strip cutting tool is applicable to the slitting of amorphous alloy strips, ensures that both sides of cuts are not damaged when the amorphous alloy strips are sheared, realizes the effective cutting of the amorphous alloy strips, and can cut a plurality of amorphous alloy strips. By arranging an automatic traverse feed adjustment device on the amorphous alloy slitting device to adjust the transversal displacement of the tool, trapezoidal and curve-shaped amorphous alloy strips can also be cut so as to be made into amorphous alloy three-dimensional roll iron cores with different cross-section shapes conveniently.

Description

technical field [0001] The invention relates to a shearing device for an amorphous alloy strip, in particular to a longitudinal shearing device for an amorphous alloy strip. Background technique [0002] As an important part of the transformer, the structure and material of the iron core have a great influence on the performance of the transformer. According to the structure of the transformer core, it can be divided into laminated core and rolled core. According to the core material, there are two main materials for making transformer cores: silicon steel strip and amorphous alloy. [0003] The laminated iron core is a "day"-shaped iron core made of silicon steel sheets and other core materials stacked together. This "day"-shaped iron core is a flat laminated iron core. There is an air gap in the magnetic circuit due to the seams of the laminated iron core, the silicon steel sheets are not tight enough, and there are local areas where the high magnetic permeability direct...

AI Technical Summary

Problems solved by technology

[0011] c. The material of the opening part of the open iron core has to be bent many times, especially the bending of the material after annealing, which will increase the stress of the material, reduce the performance of the iron core, and increase the no-load loss

[0012] d. There is a gap at the joint of the amorphous alloy material at the opening of the open-type iron core, and the joint is not tight enough, etc., the noise is larger than that of the closed-end iron core with the same capacity

[0013] e. When the amorphous alloy material at the opening is closed, the amorphous alloy material is bent, and the surface of the amorphous alloy material is easy to fall off, resulting in fish scale flakes. These flakes floating in the transformer oil are likely to cause transformer failure and make the transformer decreased security

[0014] In view of the above problems, the Chinese patent document CN101150006B discloses an "amorphous alloy rolled iron core", which is composed of several single frames wound with different cross-sectional shapes, and the cross-sectional shape of the iron core after the split is a predetermined shape. Quasi-circular, quasi-polygonal or compound shape, but in order to improve the filling factor, the iron core coil is made of amorphous alloy and silicon steel strip, which are wound separately and then combined, that is, the trapezoidal silicon steel strip is wound into a trapezoidal or deformed shape of the inner and outer rings. For the cross-section, use rectangular amorphous alloy strips to wind a single frame with a rectangular cross-section. Although the slitting of amorphous alloy strips is avoided (silicon steel strips are cut), this composite coil core is not completely made of amorphous alloys. Crystalline alloy, the characteristics of its three-dimensional wound iron core and the performance of amorphous alloy have not been fully utilized, and since the single frame of amorphous alloy and the single frame of silicon steel strip are wound separately and then put together, the gap must be filled, which increases the difficulty of production , reducing production efficiency

Especially for the convenience of nesting, the gap left between the single frames is not conducive to the reduction of no-load loss, and will increase the noise

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