CN201168634Y

CN201168634Y - Blade of paper chipper blade of paper chipper

Info

Publication number: CN201168634Y
Application number: CNU2008200831594U
Authority: CN
Inventors: 平钢
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-02
Filing date: 2008-02-02
Publication date: 2008-12-24
Anticipated expiration: 2018-02-02

Abstract

The utility model provides a shredder blade, cutter points are arranged on the blade, the center of the blade is also provided with a through hole, both sides of the blade are polished, the amount of the cutter points is ten to fifteen and the cutter points are provided with back angles. Because the structure is adopted, the polishing of the both sides of the blade reduces the friction between the blade and paper when the paper is shredded, and the paper shredding effect is favorable. The amount of the cutter points is ten to fifteen, so the paper to be shredded can be cut in a shorter distance. The cutter points are provided with the back angles, so the paper cutting efficiency is further enhanced.

Description

A kind of kneader bar

Technical field

The utility model relates to a kind of blade, relates in particular to a kind of kneader bar.

Background technology

Shredder is important equipment in the modern office chamber.Shredder whether powerful depended on the performance with its blade to a certain extent.Structure exquisiteness, the fastidious blade of material can make the shredded paper ability of shredder improve greatly.In this year, those skilled in the art are also spending many painstaking effort aspect the blade research, are that the utility model of CN 1240478C " helical tooth blade and assemble method thereof " by name discloses the comparatively outstanding cutter of a kind of performance as the notification number of authorizing on February 8th, 2006.But this cutter still has many defectives, has only established 2 edges of a knife on its each blade, and the length of shredded paper is longer, and security classification is low.In addition,, when cutting thick paper, be easy to generate deformation, reduced the effect of cutting because the edge of a knife and blade are the laminated structures of one.The defective of this cutter maximum is its central shaft, and the central shaft in this patent is a column type, in when work, especially can skid during the thicker article of cutting, and light paperboard then may be burnt the work motor of shredder under the serious situation.Though the helical axis at this cutter is also arranged on the market now, the necessary modifier treatment of helical axis, car, mill, milling spiral chute cuts the jump ring groove, has increased operation, has improved production cost, makes ordinary consumer to accept.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of good cutting effect, can deformation, and the kneader bar that price is not high yet.

In order to reach described purpose, a kind of kneader bar of the utility model, blade is provided with point of a knife, and described blade center also is provided with through hole, the polishing of described blade two sides, described point of a knife quantity is 10-15, has relief angle on the point of a knife.

Preferably, the thickness of described blade is not less than 2mm.Because thickness is less than blade easy deformation when cutting thick thing of 2mm.

Preferably, the angle a of described point of a knife cutting paper one side is 4 ° ± 1 °.Such angle can be cut point of a knife with best angle when the cutting paper, improved the efficient of shredder.

Preferably, the angle b of set relief angle is 38 ° ± 2 ° on the described point of a knife.Such angle can increase the intensity of point of a knife.

Preferably, the inclination e of set relief angle is 54 ° ± 2 ° on the described point of a knife.Such angle can make point of a knife sharper.

Preferably, described point of a knife top is 24 ± 1mm to the blade distance of center circle from d, and blade radius c is 20 ± 1mm.Such width penetrates the degree of depth of paper for the control point of a knife, thereby controls the cut paper amount.

Preferably, the set through hole of described blade center is a dodecagon.Because the rotating shaft of dodecagon is a kind of standard component, through hole is made as dodecagon can be combined with standard component easily, does not need extra die sinking, reduces production costs.Simultaneously also brought good resistance to deformation effect, in use, can not skid between rotating shaft and the blade.

Preferably, described blade forms for the steel plate punching press.The blade cost of this structure is low, and cut paper is effective.

Preferably, described blade is that powder metallurgy is made.The blade cost of this structure is higher a little than the blade of steel plate drawing, but the cut paper better effects if, and the motor cut paper amount of same power is big.

This shows the frictional force the when polishing of described blade two sides has reduced shredded paper between blade and the paper, shredded paper better effects if.Described point of a knife quantity is 10-15, can cut in than short distance and treat broken paper.Thereby the length of shredded paper shortens, and has improved security classification greatly.

Description of drawings

Below in conjunction with accompanying drawing the utility model is illustrated in further detail

Fig. 1 is the stereogram of a kind of kneader bar of the utility model.

Fig. 2 is the enlarged diagram at A place among Fig. 1.

Fig. 3 is the front schematic view of a kind of kneader bar of the utility model.

Fig. 4 is the side schematic view of a kind of kneader bar of the utility model.。

Fig. 5 is the assembling schematic diagram of a kind of kneader bar of the utility model and rotating shaft.

The specific embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, a kind of kneader bar, blade 1 is provided with point of a knife 2, described blade 1 center also is provided with through hole 4, the polishing of described blade 1 two sides, and described point of a knife 2 quantity are 10-15, point of a knife 2 quantity are many more, the effect of shredded paper is good more, and the paper of cutting is more broken, but according to test, blade more than 15 points of a knife 2, cost improves, and the shredded paper effect also reaches capacity substantially, does not have again institute to promote.Therefore for 4 grades of shredded paper security classifications, the blade 1 of 10 points of a knife 2 can satisfy user's needs, security classification is being required then can select the blade 1 of 15 points of a knife 2 under the higher situation.Have relief angle 3 on the point of a knife 2.Relief angle 3 can make paper promptly cracked after incision, reaches better cutting effect.For avoiding blade 1 distortion when cutting, the thickness of described blade 1 is not less than 2mm.The general thick blade 1 of 2mm is enough to solve most split requirement.

When making, point of a knife 2 is most important working positions.The angle a that should guarantee point of a knife cutting paper one side is 4 °, and the processing time error should be above 1 °.Such point of a knife 2 can be with the angle incision paper of the best when work.

The angle b of set relief angle 3 is that 38 ° of processing time errors should be above 2 ° on the point of a knife 2.Such angle can increase the intensity of point of a knife 2.

The inclination e of set relief angle is that 54 ° of processing time errors should be above 2 ° on the described point of a knife 2.Such angle can make point of a knife 2 sharper.

And from being 24 ± 1mm, blade 1 radius is 20 ± 1mm to blade 1 distance of center circle on described point of a knife 2 tops.Such width penetrates the degree of depth of paper for control point of a knife 2, thereby controls the cut paper amount.

The set through hole 4 in blade 1 center is a dodecagon.Just in time the dodecagon rotating shaft 5 with standard matches

Described blade 1 can form with the steel plate punching press, also can make for powder metallurgy.Blade 1 cost that the steel plate punching press forms is low, and cut paper is effective.Blade 1 cost that powder metallurgy is made is higher a little than the blade 1 of steel plate drawing, but the cut paper better effects if, and the motor cut paper amount of same power is big.

As shown in Figure 5, a kind of kneader bar of the utility model and rotating shaft 5 are cooperated, can be installed on the shredder and use, when the cutting paper, the distance between the point of a knife 2 is short, makes the shredded paper of cutting shorter.The through hole 4 of dodecagon just in time matches with the dodecagon rotating shaft 5 of standard, makes blade 1 can not skid in rotating shaft 5 when cutting, has guaranteed the reliability of cutting.

Above specific embodiment is for explanation of the present utility model, rather than for qualification of the present utility model.Change and distortion that those skilled in the art make according to the utility model only otherwise break away from spirit of the present utility model, all should belong to protection domain of the present utility model.

Claims

1. kneader bar, blade (1) is provided with point of a knife (2), and described blade (1) center also is provided with through hole (4), it is characterized in that, the polishing of described blade (1) two sides, described point of a knife (2) quantity is 11-15, has relief angle (3) on the point of a knife (2).

2. a kind of kneader bar according to claim 1 is characterized in that: the thickness of described blade (1) is not less than 2mm.

3. a kind of kneader bar according to claim 1 is characterized in that: the angle a of cutting paper one side of described point of a knife (2) is 4 ° ± 1 °.

4. a kind of kneader bar according to claim 1 is characterized in that: the angle b that described point of a knife (2) is gone up set relief angle (3) is 38 ° ± 2 °.

5. a kind of kneader bar according to claim 1 is characterized in that: the inclination e that described point of a knife (2) is gone up set relief angle is 54 ° ± 2 °.

6. a kind of kneader bar according to claim 1 is characterized in that: the radius c of blade (1) is 20 ± 1mm, and point of a knife (2) top is 24 ± 1mm to blade (1) center of circle apart from d.

7. according to one of them described a kind of kneader bar of claim 1-6, it is characterized in that: the set through hole in described blade (1) center (4) is a dodecagon.

8. according to one of them described a kind of kneader bar of claim 1-6, it is characterized in that: described blade (1) forms for the steel plate punching press.

9. according to one of them described a kind of kneader bar of claim 1-6, it is characterized in that: described blade (1) is made for powder metallurgy.