Outside-diameter-variable paper drum

Abstract

The invention discloses an outside-diameter-variable paper drum which comprises a central shaft, at least two radial fixed mounts and circumferential fixed bars, wherein the radial fixed mounts are fixedly and uniformly distributed at the two end heads of the central shaft, and the number of the circumferential fixed bars is the same as that of the radial fixed mounts. A radial slot and a plurality of tangential slots with unequal radiuses are formed in each radial fixed mount, and the tangential slots are communicated with the radial slot. Threaded ends are arranged at two ends of each circumferential fixed bar, and the diameters of the threaded ends are smaller than the width of the radial slot and the tangential slots. The circumferential fixed bars are fixedly arranged on the preset tangential slots through nuts, and an axial opening slot for clamping a paper head is arranged in at least one circumferential fixed bar. The circumferential fixed bars comprise hollow tubes of which the diameters are larger than the width of the tangential slots, and threaded ends of which the diameters are smaller than the width of the radial slot and the tangential slots are arranged at two ends of the hollow tubes. An axial opening slot for clamping the paper head is arranged in at least one hollow tube. The outside-diameter-variable paper drum has multiple purposes, and the outside diameter of the paper drum can be adjusted in a step mode. The outside-diameter-variable paper drum has the beneficial effects that the storage and carrying cost is reduced, and the use ratio of a product is increased.

Description

technical field [0001] The invention relates to a winding roll for papermaking. Background technique [0002] Paper rolls are essential equipment in the papermaking industry. Different paper sheets have different inner diameters of paper rolls, but the diameters of existing paper rolls are fixed. Therefore, paper rolls with different diameters must be equipped with When there are many kinds of different paper rolls, it is inconvenient to store and carry the paper rolls with different outer diameters, which increases the cost. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides a paper roll with variable outer diameter, so as to achieve multiple functions of one roll. [0004] Technical scheme of the present invention is: [0005] A paper roll with a variable outer diameter, comprising a central shaft, at least two uniformly distributed radial fixing frames fixed at both ends of the central shaft, and c...

AI Technical Summary

Problems solved by technology

[0002] Paper rolls are essential equipment in the papermaking industry. Different paper sheets have different inner diameters of paper rolls, but the diameters of existing paper rolls are fixed. Therefore, paper rolls with different diameters must be equipped with Different paper rolls, when there are many varieties, it is inconvenient to store and transport various paper rolls with different outer diameters, which increases the cost

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