CN201912978U - Paper cutting blade of paper shredder - Google Patents

Abstract

The utility model relates to a paper cutting blade of a paper shredder, which comprises a disc-shaped plate body. The peripheral edge of the disc-shaped plate body is provided with a plurality of outward protruding cutting blade tips, and the center of the disc-shaped plate body is provided with a shaft hole which can be assembled with a blade wheel shaft in a matching way. The paper cutting blade of the paper shredder is characterized in that the blade back parts among the cutting blade tips on the peripheral edge of the disc-shaped plate body are uniformly provided with dense saw teeth. When a paper cutting opening is formed by the paper cutting blade on a blade wheel group of the paper shredder, the dense saw teeth 3 on the blade back parts on the peripheral edge of the disc-shaped plate body can puncture into a piece of paper immediately when being contacted with the paper, the paper can be drawn downwards smoothly and rapidly into the cutting opening, the friction between the paper cutting blade and the paper to be cut can be increased greatly, the paper drawing speed can be increased effectively, and the paper jamming caused by a low paper drawing speed can be avoided. When the paper cutting blade is installed on the paper shredder with the same number of pieces of paper to be cut, the material consumption of the paper cutting blade is lower than the material consumption of the exiting paper cutting blade, and the cost of the whole machine is reduced correspondingly.

Description

A kind of shredder cut paper blade

Technical field:

The utility model relates to shredder, especially a kind of shredder cut paper blade.

Background technology

The structure of tradition shredder cut paper blade as shown in Figure 1, the point of a knife 2 that blocks that is provided with the discoid lamellar body 10 of axis hole 11 and is arranged on some evaginations on discoid lamellar body 10 peripheries by the center constitutes, the discoid blade peripheral edge of respectively blocking between the point of a knife 2 is the knife back 1.The effect of the knife back 1 is that another blade that is mated forms sheared edge, the Paper tractor that inserts sheared edge is sent into sheared edge after, cooperate the sheared edge that forms that paper is sheared the growth paper slip by two knife back 1.The effect of point of a knife 2 is that the long paper slip that will cut breaks into the paper section.The knife back 1 of this conventional blades is owing to be the stamping-out truncation surface of hardware stamping technology, so its surperficial smoother is easily skidded to Paper tractor the time, the hauling speed that influence is opened by cut paper, and then can cause cutter paper jam to occur, point of a knife 2 is arranged sparse easier this kind of generation of blade phenomenon.For improving the hauling speed that paper enters sheared edge, can or increase the quantity of point of a knife 2 in discoid blade peripheral edge in the appearance and size that strengthens discoid lamellar body usually.This can increase the blade material undoubtedly, improves processing cost, and can increase the shredder overall weight.

Summary of the invention

Technical problem to be solved in the utility model is the defective that remedies above-mentioned prior art, provides a kind of simple in structure, and can effectively promote the shredder cut paper blade that paper enters the sheared edge hauling speed.

The utility model solves by the following technical programs.

This shredder cut paper blade comprises: periphery is distributed with the discoid lamellar body that some evaginations block point of a knife, and discoid lamellar body center is provided with the axis hole that can cooperate assembling with the break bar axle.

The characteristics of this shredder cut paper blade are:

Described discoid blade peripheral edge is respectively blocked on the knife back between the point of a knife and is laid with fine and closely woven sawtooth.

Technical problem of the present utility model is further solved by the following technical programs.

The described knife back that is laid with fine and closely woven sawtooth is interval with the big sawtooth of at least one profile of tooth greater than fine and closely woven sawtooth.

Toothed surface around big sawtooth also is laid with fine and closely woven sawtooth.

The utility model beneficial effect compared with prior art is:

The utility model shredder cut paper blade is installed on the kneader knife wheels when forming paper sheared edge, the fine and closely woven sawtooth that is distributed on the discoid blade peripheral edge knife back can penetrate paper contacting moment with paper, and the traction paper enters sheared edge downwards smoothly fast, cut paper blade and the frictional force of being opened have been increased greatly by shredded paper, effectively promote Paper tractor speed, overcome the paper jam that causes slowly because of Paper tractor speed.If big sawtooth is set at interval at the knife back that is laid with fine and closely woven sawtooth.Double wedge can withstand paper in cut paper blade rotational shear paper process, this support force that withstands can further increase cut paper blade and the frictional force of being opened by shredded paper, anti-detent plug paper better effects if.This shows that on the shredder of identical shredded paper number, what the utility model cut paper blade was installed can be less than existing cut paper blade, the corresponding reduction of the cost of entire machine with material.

Concrete structure of the present utility model is provided in detail by the following drawings and embodiment.

Description of drawings

Fig. 1 is existing shredder hand papercutter chip architecture schematic diagram;

Fig. 2 is the utility model shredder hand papercutter chip architecture schematic diagram;

Fig. 3 is the structure for amplifying schematic diagram at shredder cut paper blade A shown in Figure 2 position;

Fig. 4 is that shredder cut paper blade shown in Figure 2 is to paper cutting process schematic diagram;

Fig. 5 is the utility model shredder cut paper blade embodiment 2 structural representations;

Fig. 6 is the structure for amplifying schematic diagram at shredder cut paper blade B shown in Figure 5 position;

Fig. 7 is that shredder cut paper blade shown in Figure 5 is to paper cutting process schematic diagram.

The specific embodiment

Embodiment 1: can be clear that shredder cut paper blade from Fig. 2 and Fig. 3, comprise: periphery is distributed with and is arranged with the discoid lamellar body 10 that two evaginations block point of a knife 2, and discoid lamellar body 10 centers are provided with the axis hole 11 that can cooperate assembling with the break bar axle.Discoid lamellar body 10 peripheries respectively block on the knife back 1 between the point of a knife 2 and are laid with fine and closely woven sawtooth 3.

The course of work of the utility model shredder cut paper blade as shown in Figure 4, the utility model shredder cut paper blade is installed identical with existing kneader knife wheels on the kneader knife wheels.When inserting mouth from the paper of shredder, paper 6 enters into shredder two knife wheel set relatively during the formed sheared edge of rotation position, the fine and closely woven sawtooth 3 that is distributed on the discoid blade peripheral edge knife back penetrates paper contacting moment with paper, and the traction paper enters sheared edge downwards smoothly fast, rotate formed sheared edge relatively with the paper cut growth paper slip that enters by two knife wheel set, by the point of a knife that blocks that is distributed on the discoid blade peripheral edge long paper slip bundle is broken into shredded paper again.The fine and closely woven sawtooth 3 that is distributed on the discoid lamellar body 10 periphery knife back 1 can increase the cut paper blade greatly and be opened 6 frictional force by shredded paper, has effectively promoted paper 6 hauling speeds, has overcome the paper jam that causes slowly because of Paper tractor speed.

Embodiment 2: can be clear that from Fig. 5 and Fig. 6, the basic structure of shredder cut paper blade is identical with embodiment 1, difference only is: be evenly equipped with on the knife back 1 of fine and closely woven sawtooth 3 and be interval with the big sawtooth 4 of three profiles of tooth greater than fine and closely woven sawtooth 3, also be laid with fine and closely woven sawtooth 5 on the big sawtooth 4.

Present embodiment shredder cut paper blade is guaranteeing that embodiment 1 uses on the advantage basis, is disposed on the big sawtooth 4 on the knife back 1.Double wedge 4 can withstand paper 6 in cut paper blade rotational shear paper process, paper can further increase cut paper blade and the frictional force of being opened by shredded paper under big 4 support power of sawtooth, help improving the hauling speed of paper 6 more.

Above content is in conjunction with concrete preferred implementation, to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.Under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of being submitted to.

Claims (3)

1. shredder cut paper blade, comprise: periphery is distributed with the discoid lamellar body that some evaginations block point of a knife, discoid lamellar body center is provided with the axis hole that can cooperate assembling with the break bar axle, it is characterized in that: described discoid blade peripheral edge is respectively blocked on the knife back between the point of a knife and is laid with fine and closely woven sawtooth.

2. shredder cut paper blade according to claim 1 is characterized in that:

The described knife back that is laid with fine and closely woven sawtooth is interval with the big sawtooth of at least one profile of tooth greater than fine and closely woven sawtooth.

3. shredder cut paper blade according to claim 2 is characterized in that:

Also be provided with fine and closely woven sawtooth on the described big sawtooth.

Images