Method and device for positioning paper tail of paper roll before paper cutting

Abstract

The invention relates to a method and device for positioning the paper tail of a paper roll before paper cutting. The method comprises the following steps that a mark is made on the paper roll at a preset distance from the paper tail; after the paper tail of the paper roll is sealed, the mark is searched, the position information of the paper tail is obtained according to the mark and the preset distance, and the paper roll is adjusted so that the paper tail is positioned on the upper side or the lower side of the paper roll; and the adjusted paper roll is fed to a paper cutting conveying channel. In the traditional paper cutting process, a pressing plate presses the upper side of the paper roll tightly to stabilize the paper roll for cutter cutting, if the paper tail at the sealing part of the paper roll is located on the left and right sides of the paper roll, the sealing position can burst open and fall off due to the sealing part of the paper tail being stressed. The method for positioning the paper tail of the paper roll before paper cutting positions the paper tail before the paper roll enters the paper cutting conveying channel, so that the paper tail is prevented from beingpositioned on the two sides, where the paper roll are extruded and lengthened, of the paper roll, and the phenomenon of seal falling off is avoided.

Description

Technical field [0001] The invention relates to a machine and a device for processing a web material into a paper roll, in particular to a method and a device for positioning the tail of a paper roll before paper cutting. Background technique [0002] In the production process of paper products, after a long strip of paper product is rewinded and sealed, the paper product must be cut into several pieces that meet the length of the finished product with a paper cutter. When the paper roll is cut by the paper cutter, the pressure plate above the paper roll will press the paper roll to stabilize the paper roll for cutting by the cutter. In the traditional paper cutting operation process, the paper tail of the paper roll may burst and fall off at the sealing position, resulting in the undesirable phenomenon of the paper roll sealing off. Summary of the invention [0003] Based on this, it is necessary to provide a method and device for positioning the tail of the paper roll before pa...

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a method and device for positioning the tail of the paper roll before paper cutting, which can prevent the seal of the paper roll from falling off.

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