Slitting device and paper product processing table

Abstract

The invention discloses a slitting device. The slitting device comprises an upper cutter and a bed knife matched with the upper cutter. The upper cutter comprises a shear wheel, V-shaped grooves recessing to the axis of the shear wheel are formed on the circumference of the shear wheel, two sides of each V-shaped groove form two adjacent shear faces, and the included angle between each two shear faces is larger than 0 degree and smaller than 180 degrees. The bed knife is provided with two edges, and each edge is used for being in butt joint with one corresponding shear face. The invention further provides a paper product processing table with the slitting device. The upper cutter and the bed knife of the slitting device are durable and not required to be sharpened or changed frequently, so that cost is saved while efficiency is increased. In addition, the requirement for sharp degree of a cutting edge of the upper cutter is lower owning to the mode of combining the upper cutter with the bed knife, and accordingly safety in operation is improved.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a cutting device for cutting paper to obtain paper of a suitable size and a paper product processing machine equipped with the cutting device. Background technique [0002] There are generally two ways to cut the end of the tissue paper unit in the production of the tissue paper factory: gas blowing and cutter cutting. [0003] Blow cutting is generally used in large machines with high speed and continuous production. The more common application is the way of cutting with a knife, because the way of cutting with a knife can be used for the production of roll paper on a small machine with a slow speed, and for the sorting of roll-type household paper in the later stage Sections such as cutting and packaging are more suitable to be carried out on slower machines. [0004] The cutting knife commonly used at present is made up of upper cutting knife and bottom knife, and these two knives...

AI Technical Summary

Problems solved by technology

Although the cost of this kind of cutter is cheap, there is a certain degree of danger in the operation process because the blade edge of the upper cutter is directly exposed.

In addition, the upper and bottom knives need to be sharpened and replaced regularly

For example, the upper and bottom knives need to be sharpened every two months, and new knives need to be replaced in about two years. The maintenance cost is high and the efficiency of the machine is affected.

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