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Slitting knife

A technology of longitudinal cutting and outer layer, applied in shearing devices, tools for shearing machines, metal processing equipment, etc., can solve the problems of rising costs and increasing the trouble of tools, ensuring strength and conducive to stress distribution. , the effect of suppressing distortion

Inactive Publication Date: 2015-07-29
昆山兼房高科技刀具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the longitudinal cutting knife covered with a hard layer is worn, it is impossible to form a cutting edge again by grinding.
Therefore, the tool has to be replaced as a whole, which will lead to an increase in cost and increase the trouble of using the tool

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Such as Figure 1-3 As shown, the longitudinal cutting knife 10 of the first embodiment is formed in a disc shape, and a circular shaft hole 12 is formed through the center in the thickness direction. The support shaft is inserted into this shaft hole 12 and a cutting device is arranged. The longitudinal cutting knife 10 is driven or driven to rotate with the shaft hole 12 as the center. The cutting edge 18 designed at the peripheral edge is pressed on the plate-shaped processing material for cutting. This plate-shaped processing material can be a thin plate, for example Paper sheet, resin sheet, metal sheet.

[0026] The slitting knife 10 is made of metal-clad steel, and is manufactured through heat treatment such as quenching and other treatments including necessary grinding. The metal clad steel is formed by bonding multiple metals to form a three-layer structure, wherein the first steel is in the middle, and the second steel is arranged on both sides of the...

Embodiment 2

[0036] Example 2: Such as Figure 4-5 As shown, the longitudinal cutting knife 20 differs from the embodiment 1 in that the outer peripheral surface has a curvature from the center side in the thickness direction to the end face to the outside of the oblique radius. This curvature is designed as a slightly angled cutting edge 18 at the outer layer 16 .

[0037] In Examples 1 and 2, the outer peripheral surface of the slitting knife 10, 20 may be flat, or may be curved from the center in the thickness direction to the inside of the radius, or shaped like a V-shaped recess. The angle of the cutting blade 18 depends on the material to be processed. Or adjust the conditions accordingly.

[0038] In the following, the slitting knife 10 of Example 1 is used for a cutting test. The specific material, structure and shape of the slitting knife 10 used are as follows:

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Abstract

The invention relates to a longitudinal cutting knife which is characterized in that the discoid longitudinal cutting knife formed through heat treatment is made of metal cladding steel; the metal cladding steel comprises first steel and second steel of which the crystallize particle size is smaller than that of the first steel; the longitudinal cutting knife comprises an interlayer made of the first steel and a pair of outer layers respectively arranged on two sides of the interlayer; the outer layers are made of the second steel; the interlayer is aligned with the outer layers; and at least one outer layer is provided with a cutting edge. As the first steel of the interlayer is cheaper than the second steel of the outer layers, and the second steel has better abrasion resistance, the longitudinal cutting knife is not only cheap but also wear-resistant integrally.

Description

Technical field [0001] The present invention relates to a knife related to a longitudinal cutting knife. Background technique [0002] Slitting knives are usually used to cut the edges of thinner materials, such as the edges of long strip steel plates, but in fact, the slitting knives are also widely used for continuous cutting of materials. The Japanese Patent Publication No. 2983118 discloses an edge waste cutting device, which is a pair of longitudinal cutting knives on the upper and lower sides, and is arranged around a disc-shaped body so that opposite cutting blades rotate. The material is placed between the two longitudinal cutting knives, and the material is cut according to the upper and lower cutting edges. The slitting knife will wear out along with the cutting edge of the material, and gradually the blade will become unsharp. Therefore, it is necessary to select some high-speed tool steels with better wear resistance. However, the price of steel with better wear re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D35/00
Inventor 西尾悟渡部友朗井上义博
Owner 昆山兼房高科技刀具有限公司