Knife pivot component of paper trimmer

Abstract

The present invention discloses a cutter shaft component of a paper cutter. The cutter shaft component comprises a main shaft and a plurality of cutter wheels which are coaxially mounted at the main shaft; a spacing piece is arranged between two adjacent cutter wheels; and the periphery of the cutter wheel is provided with a plurality of tines distributed uniformly. The cutter shaft component is characterized in that a spiral positioning device is arranged between the main shaft and the cutter wheels and the spiral positioning device ensures that the tines at adjacent cutter wheels are staggered with each other for 0.5 degree to 15 degrees sequentially, and at one moment, only one tine is contacted with paper to be crushed. The cutter shaft component has the advantages that as the spiral positioning device which ensures that the tines at the adjacent cutter wheels are staggered with each other for 0.5 degree and 15 degrees sequentially is arranged between the main shaft and the cutterwheels, so that the cutter shaft component is ensured that only one tine is contacted with the paper to be crushed at one moment, therefore, when thick paper is crushed, the driving force required bythe main shaft is smaller, the selected motor power is also smaller, and the cutter shaft component has the action of crushing the paper and saves energy consumption at the same time.

Description

technical field [0001] The invention relates to a paper cutter, in particular to a cutter shaft assembly of the paper cutter. Background technique [0002] In corporate offices, many papers that have been used and are discarded, because some of the above information is confidential and cannot be known to outsiders, it is necessary to shred the paper to avoid leakage of secrets, so it is necessary to use a shredder to shred Paper shreds. The application date is July 12, 1995, and the Chinese utility model patent specification No. ZL95216030.7 discloses a hob unit of a pulverizing paper shredder, which is equipped with a cutter wheel in series on a multi-prismatic main shaft. And the spacer, the cutter wheel and the spacer are arranged at intervals, each cutter wheel is composed of blades that are close together, and the outer circumference of each blade has A-shaped tines at intervals, and each group in the entire cutter wheel group The cutter wheel is staggered by an angle...

AI Technical Summary

Problems solved by technology

The application date is July 12, 1995, and the Chinese utility model patent specification No. ZL95216030.7 discloses a hob unit of a pulverizing paper shredder, which has a cutter wheel set in series on a multi-prismatic main shaft. And the spacer, the cutter wheel and the spacer are arranged at intervals, each cutter wheel is composed of blades that are close together, and the outer circumference of each blade has A-shaped tines at intervals, and each group in the entire cutter wheel group The cutter wheel is staggered at an angle in the circumferential direction and then fitted with the main shaft, so that the sharp teeth of each set of blades in the assembled cutter wheel set are arranged in a spiral shape, and the axial distance between the two blades that are adjacent to each other in two phases is uniform. It forms a V-shaped cross-shaped blade groove. When working, the entire cutter wheel is composed of a hobbing wheel with a spiral tine, and there are several intersecting V-shaped blade grooves in the axial direction for shredding, so that the paper can be Achieving a multi-directional crushing effect; however, since the main shaft is in the shape of a polygonal column, although each set of cutter wheels is staggered by an angle in the circumferential direction to fit the main shaft, due to the limited number of sides of the main shaft, when crushing thicker paper or multiple overlapping papers , at the same time, there will be multiple tines in contact with the paper to be shredded at the same time. At this time, the driving force required by the main shaft will be relatively large, the required motor power will be relatively large, and the energy consumption will be relatively high.

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