CN210097875U - High-security paper shredding cutter set - Google Patents

High-security paper shredding cutter set Download PDF

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Publication number
CN210097875U
CN210097875U CN201920682184.2U CN201920682184U CN210097875U CN 210097875 U CN210097875 U CN 210097875U CN 201920682184 U CN201920682184 U CN 201920682184U CN 210097875 U CN210097875 U CN 210097875U
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CN
China
Prior art keywords
cutter
blade
paper
shaft
blades
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Active
Application number
CN201920682184.2U
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Chinese (zh)
Inventor
周立成
李卿
陈海霆
孟苏飞
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Xin Yu Group Co ltd
Jiangsu New United Office Equipments Co Ltd
New United Group Co Ltd
Original Assignee
Xin Yu Group Co ltd
Jiangsu New United Office Equipments Co Ltd
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Publication of CN210097875U publication Critical patent/CN210097875U/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The utility model provides a high secret shredded paper cutter group relates to secret technical field. High secret shredded paper cutter group includes two cutter unit, and cutter unit includes: a cutter shaft and a cutter blade group. The quantity of cutter blade group is a plurality of, and a plurality of cutter blade group are in proper order spiral equidistance along the axial of cutter shaft and distribute in the cutter shaft, and the distance between the cutter blade corresponds the maximum width that needs the shredded paper strip of cutting into. The cutting blade comprises a plurality of blade point parts, and the distance between the adjacent blade point parts corresponds to the maximum length of the shredded paper strips to be cut. The cutter shafts of the two cutter units are arranged side by side, the directions of the cutter blade parts of the cutter blades are opposite, and the cutter blades of the two cutter units are stacked in a staggered mode and are not in contact with each other. The high-confidentiality paper shredding cutter set simplifies a high-confidentiality paper cutting structure which can be achieved by the previous three integrated cutter sets into two cutter units which are assembled by the sheet-shaped blades and have a punching sheet type structure, and shreds the paper into extremely fine squares so as to achieve high confidentiality of paper documents.

Description

High-security paper shredding cutter set
Technical Field
The utility model relates to a technical field keeps secret, particularly, relates to a high shredded paper cutter group that keeps secret.
Background
Today, people are increasingly conscious of privacy as knowledge develops rapidly. In daily life or work, document paper often needs to be destroyed, so that other people are prevented from obtaining the data recorded on the documents.
According to different confidentiality degrees, the existing regulations have confidentiality indexes of DIN66399, such as shredded paper cut into strips, and in the first-level security level, the maximum width of the shredded paper in the strip shape is 12mm, and no requirement is made on the length; as another example, in the fifth level of safety, the maximum width of shredded paper in the form of a granulated strip is 2mm, and the maximum surface area is 30mm2(ii) a In the highest level seven security level, the maximum surface area of shredded paper is required to be 5mm2。
Some conventional paper shredding apparatuses are intelligent paper shredders capable of identifying the presence or absence and thickness of paper, and also non-intelligent paper shredders capable of adjusting the cutting speed according to the thickness of paper. The high-security paper shredder in the market at present cuts paper into 1mmx2mm size cutter sets, which are completed by three integrated cutters, firstly cuts the paper into strips, and then cuts the strips of paper into 1mmx2mm small pieces.
Although the mode can reach the seventh level of safety, the integrated cutter has the disadvantages of high cost, high processing difficulty and low efficiency. Therefore, a new solution is needed for the high security level of shredded paper.
Disclosure of Invention
An object of the utility model is to provide a high secret shredded paper cutter group, its low cost, processing is simple, assembles easily, and it can cut into the small square through simple structure with the paper, satisfies the secret demand of high-level, avoids the file data to shred not in place.
The embodiment of the utility model is realized like this:
an embodiment of the utility model provides a high secret shredded paper cutter group, including two cutter unit, cutter unit includes:
a cutter shaft;
the paper shredding machine comprises a cutter blade group, wherein the cutter blade group comprises at least one cutter blade, the number of the cutter blade groups is multiple, the cutter blade groups are sequentially spirally and equidistantly distributed on a cutter shaft along the axial direction of the cutter shaft, and the distance between the cutter blades corresponds to the maximum width of shredded paper strips to be shredded;
the cutting blade comprises a plurality of blade tip portions, the angle of each blade tip portion is 20-40 degrees, each blade tip portion is provided with a pressure angle, the pressure angle is 60.1-70 degrees, and the distance between every two adjacent blade tip portions corresponds to the maximum length of the shredded paper strips to be cut;
two cutter unit the cutter axle sets up side by side just the direction of the blade tip portion of cutting blade is opposite, two cutter unit the cutting blade is crisscross to be stacked and not contact.
In addition, according to the utility model discloses a high secret shredded paper cutter group that provides, can also have following additional technical characterstic:
in an optional embodiment of the present invention, the distance between adjacent cutting tip portions is 1.9-2.6mm, and the distance between adjacent cutting blades is 0.9-1.9 mm.
In the utility model discloses an optional embodiment, two the centre-to-centre spacing of cutter unit is 36.5mm, the thickness of cutting blade is 0.9mm, and the external diameter size is 43.2mm, the nose portion quantity is 67, and is adjacent the distance of nose portion is 2.0mm, and is adjacent distance between the cutting blade is 1 mm.
In an optional embodiment of the present invention, the outer diameter of the cutting blade is 43.8mm, and the number of the cutting tip portions is 68;
or the outer diameter of the cutting blade is 42.6mm, and the number of the blade tip parts is 66.
In an optional embodiment of the present invention, the angle of the nose portion is 29.9 °, and the pressing angle of the nose portion is 60.1 °.
In an optional embodiment of the present invention, the cutter unit further comprises:
the number of the space rings is multiple, the space rings and the cutting blades are sequentially sleeved on the cutter shaft at intervals, and the distance between every two adjacent cutting blades is equal to the thickness of the space rings;
the fixing piece is sleeved on the cutter shaft and abutted to the space ring at the edge or the cutter blade.
The utility model discloses an in the optional embodiment, the cutter unit still includes paper blocking device and fixed axle, every the outside of space ring all overlaps and is equipped with the paper blocking device, the paper blocking device has the shaft hole, the fixed axle passes a plurality of the coaxial axle center of paper blocking device the shaft hole is with a plurality of the position of paper blocking device is fixed.
In an optional embodiment of the present invention, the cross-sectional shape of the cutter shaft is a polygon with even number of sides or the spiral groove is formed in the circumferential direction of the cutter shaft.
In an optional embodiment of the present invention, the cross-section of the cutter shaft has a shape of regular hexagon, regular octagon, regular decagon, regular dodecagon, regular tetradecagon, or regular hexadecagon.
The utility model discloses an in the optional embodiment, the cutting blade has the sword round hole, singly the cutting blade group the cutting blade the sword round hole sets up with the axle center, and is a plurality of when the cutting blade group spiral was laid, every the cutting blade group the quantity of cutting blade is 4, adjacent two between the cutting blade group, one the cutting blade group the sword round hole is relative the cutting shaft rotates an limit, another the cutting blade group the sword round hole position keeps, and is a plurality of the cutting blade group the direction of rotation of sword round hole is the same.
The utility model has the advantages that:
the utility model discloses a high secret shredded paper cutter unit will be in the past three high secret cut paper structures that integral type cutter unit could reach and simplify into two cutter units towards the piece formula structure of assembling by the slice blade, be cut into the paper garrulous extremely fine square, reach the high secret to the paper file.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a high security shredding knife set;
FIG. 2 is a schematic view of a first type of cutter unit;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is a left side view of FIG. 2;
FIG. 5 is a schematic view of the cutter shaft of FIG. 2;
FIG. 6 is a schematic view of a second cutter unit;
FIG. 7 is a left side view of FIG. 6;
FIG. 8 is a schematic view of the cutter shaft of FIG. 6;
FIG. 9 is a schematic view of a spacer ring;
FIG. 10 is a schematic view of a clamp spring;
FIG. 11 is a schematic view of a sheet stop;
FIG. 12 is a schematic view of a stationary shaft;
FIG. 13 is a schematic view of a cutting blade from one perspective;
fig. 14 is a partially enlarged view of a portion a in fig. 13;
FIG. 15 is a schematic view of a cutting blade from another perspective;
fig. 16 is a partially enlarged view of a portion B of fig. 15.
Icon: 100-high security paper shredding cutter group; 10-a cutter unit; 20-cutter shaft; 21-long axis; 22-minor axis; 30-a cutting blade; 30 a-a cutting blade; 31-a tip portion; 32-knife round hole; 40-space ring; 50-a clamp spring; 60-a paper stop; 61-axle hole; 70-fixed axis.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1 to 16, the present embodiment provides a high security shredding cutter set 100, which includes two cutter units 10, the cutter units 10 include:
a cutter shaft 20;
the paper shredding machine comprises a cutter blade group, wherein the cutter blade group comprises at least one cutter blade 30, the number of the cutter blade groups is multiple, the cutter blade groups are sequentially spirally and equidistantly distributed on a cutter shaft 20 along the axial direction of the cutter shaft 20, and the distance between the cutter blades 30 corresponds to the maximum width of shredded paper strips to be shredded;
the cutter blade 30 includes a plurality of blade portions 31, the angle of the blade portion 31 is 20 ° to 40 °, the blade portion 31 has a pressing angle, the pressing angle is 60.1 ° to 70 ° (in the drawing, the angle of the blade portion 31 is α, and the pressing angle of the blade portion 31 is β), and the distance between the adjacent blade portions 31 corresponds to the maximum length of the shredded paper strips to be cut;
the cutter shafts 20 of the two cutter units 10 are arranged side by side, the directions of the blade tips 31 of the cutter blades 30 are opposite, and the cutter blades 30 of the two cutter units 10 are overlapped in a staggered mode and are not in contact with each other.
The cutting blade 30 is of a punching structure, so the high-security shredded paper cutter set 100 is also of a sheet-shaped assembled structure. The distance between the cutting blades 30 corresponds to the maximum width of the strip of shredded paper to be cut and the distance between adjacent blade tips 31 corresponds to the maximum length of the strip of shredded paper to be cut, allowing slight machining dimensional tolerances.
For example, when the security level requirement reaches level 7 and the paper needs to be shredded into 1mmx2mm, the preferred scheme is that the center distance between the two cutter units 10 is 36.5mm, the center distance can be adjusted according to the diameter of the cutter blade and the number of the cutter points, the thickness of the cutter blade 30 is 0.9mm, the outer diameter size is 43.2mm, the number of the cutter point parts 31 is 67, and so on, the outer diameter of the cutter blade 30 can be increased to 43.8mm, the number of the cutter point parts 31 is 68, the outer diameter is decreased to 42.6mm, the number of the cutter point parts 31 is changed to 66, and the same paper shredding effect can be achieved by adjusting the center distance between the two cutter units 10. The distance between adjacent blade tips 31 is 2.0mm, and the distance between adjacent cutting blades 30 is 1 mm.
It is conceivable that the structure of the high security shredding cutter set 100 can adjust the outer diameter of the cutter blades 30, the number of the blade tips 31, the distance between the adjacent blade tips 31, and the distance between the adjacent cutter blades 30 to shred the paper into other sizes, for example, the distance between the adjacent blade tips 31 can be adjusted between 1.9-2.6mm, and the distance between the adjacent cutter blades 30 can be adjusted between 0.9-1.9mm, so that the shredding cutter set can be a shredder capable of shredding paper into other sizes, as long as the product of the distance between the adjacent blade tips 31 and the distance between the adjacent cutter blades 30 is less than 5mm2And (4) finishing.
Further, it is preferable that the angle of the nose portion 31 is 20 ° to 29.9 °, in the present embodiment, the angle of the nose portion 31 is 29.9 °, and the pressing angle of the nose portion 31 is 60.1 °.
In order to better secure the cutting blade 30, the cutter unit 10 further includes:
spacer ring 40, spacer ring 40 quantity are a plurality of, and spacer ring 40 hole is interior hexagon, and easy to assemble fixes on the cutter axle, locates cutter axle 20 with cutter blade 30 interval cover in proper order, and the distance between the adjacent cutter blade 30 equals the thickness of spacer ring 40. In the present embodiment, the spacer 40 has a thickness of 1 mm. The spacer ring is used for separating the blades to limit the width of the cut paper sheets, the paper stopper is assembled between two adjacent blades and used for smoothly discharging the 1x2mm small paper sheets cut by the cutting blades out of the cutter group, so that the small paper sheets after cutting are prevented from being clamped in the cutter group to cause the blockage of the cutter group and finally lose the paper cutting function.
The fixing piece is sleeved on the cutter shaft 20 and abuts against the spacer ring 40 or the cutter blade 30 at the edge. In this embodiment, the fixing member is a clamp spring 50, and the clamp spring 50 is used for limiting the position of the blade group on the cutter shaft and playing a role of fixing the position.
The cutter unit 10 further comprises a paper stopper 60 and a fixed shaft 70, and the paper stopper 60 is sleeved on the outer side of each spacer ring 40; the sheet stopper 60 has a shaft hole 61, and the fixing shaft 70 passes through the coaxial shaft holes 61 of the plurality of sheet stoppers 60 to fix the positions of the plurality of sheet stoppers 60. In this embodiment, one paper stop 60 has two shaft holes 61, and the corresponding high security shredding cutter set 100 has four fixed shafts 70.
Wherein, the fixed shaft 70 can be fixed at both ends thereof to a device (e.g., a shredder) to which the high security shredder blade set 100 is applied, to maintain its position, thereby securing the position of the paper stopper 60.
Specifically, the cross-sectional shape of the cutter shaft 20 is a polygon with even number of sides or a spiral groove is formed in the circumferential direction of the cutter shaft 20.
In detail, when the cross-sectional shape of the cutter shaft 20 is a polygon having even number of sides, the cross-sectional shape of the cutter shaft 20 is a regular hexagon, a regular octagon, a regular decagon, a regular dodecagon, a regular tetradecagon, a regular hexadecagon, or the like.
More specifically, the cutter blades 30 have the cutter circular holes 32, the cutter circular holes 32 of the cutter blades 30 of the single cutter blade group are coaxially arranged, when the plurality of cutter blade groups are spirally arranged, the cutter circular hole 32 of one cutter blade group rotates at least one side relative to the cutter shaft 20 between the two adjacent cutter blade groups, the cutter circular hole 32 of the other cutter blade group is maintained, and the rotation directions of the cutter circular holes 32 of the plurality of cutter blade groups are the same. This minimizes the angle between adjacent sets of cutting blades.
In the present embodiment, the cross-section of the cutter shaft 20 is regular hexagon, the number of the cutter blades 30 in each cutter blade group is 4, the 4 cutter blades 30 in the same group do not rotate relatively, the respective cutter circular holes 32 are aligned, and the cutter circular hole 32 of the next 4 cutter blades 30 in one cutter blade group needs to rotate 60 ° relative to the cutter blade 30 of the previous cutter blade group. The direction of rotation during mounting may be either counter-clockwise or clockwise, the direction of rotation being opposite for the two cutter units 10 during mounting. The addition of the angle to the cutting edge portion 31 itself can make the cutting edge portion 31 of the cutting blade 30 on the whole cutter shaft 20 not identical, and can have better cutting effect when cutting.
In detail, if the scheme that the cross section of the cutter shaft is polygonal with even number of sides is not adopted, the scheme that the spiral groove is formed in the circumferential direction of the cutter shaft 20 can be selected, and the spiral groove is machined on the shaft in advance according to the position of the cutter blade 30 which is embedded as required, so that the directions of the cutter blade parts 31 between different cutter blade groups are not completely consistent, and paper can be effectively cut more conveniently.
The principle of the embodiment is as follows:
the cutter in the prior art is complex in processing, high in cost and low in efficiency, and the high-confidentiality shredded paper cutter set 100 can be used for conveniently assembling the cutter blade 30 through the space ring 40, the clamp spring 50 and the like, and a good fixing effect is obtained.
When the paper cutting device is used, paper does not need to be cut into strips and then into small squares, after the paper is placed in the paper cutting device, the cutter shafts 20 of the two cutter units 10 rotate, the paper can be cut into small squares of 1mmx2mm once by means of the structure of the paper cutting device, and the requirement of high-grade confidentiality of file data is met.
Since the distance between two adjacent cutting blades 30 is 1mm, which determines the width of the cut sheet to be 1mm, and the distance between two adjacent cutting tips 31 is 2.0mm, which determines the length of the sheet to be cut to 2mm, the security level of high security DIN66399 No. 7 is achieved.
In practical use, the cutter shafts 20 of the two cutter units 10 can be respectively connected with a motor in a transmission way and then set to the same rotating speed and the rotating directions are opposite. The cutter shaft 20 of one cutter unit 10 may be used as a main shaft and connected with a motor through a gear or a chain wheel, and the cutter shaft 20 of the other cutter unit 10 may be in transmission connection with the main shaft through a synchronous gear, of course, the rotation directions are also opposite.
In the second case, there may be two kinds of cutter units 10 in one high security shredding cutter group 100, and the difference is mainly that the cutter shaft 20 of the first kind of cutter unit 10 is the major shaft 21, the cutter shaft 20 of the second kind of cutter unit 10 is the minor shaft 22, the number of cutter blades 30 on the major shaft 21 is equal to the number of space rings 40 on the minor shaft 22, and the number of space rings 40 on the major shaft 21 is equal to the number of cutter blades 30a on the minor shaft 22. The long shaft 21 may be used in driving connection with a motor for operation.
The high-security shredded paper cutter group 100 of the embodiment can shred paper into small squares of 1mmx2mm once through the matching of the cutter shaft 20, the cutter blade 30, the paper stopper 60, the spacing ring 40, the fixing shaft 70 and the clamp spring 50 and by combining the design of the special cutter point part 31 angle of the cutter blade 30 and the design of the cutter point part 31 angle pressing and the like, thereby meeting the requirement of high-security shredded paper, improving the efficiency of shredded paper, and reducing the cost because the structural components are more simplified compared with the prior high-security shredder which uses 3 cutters of an integral type, and the high-security shredded paper cutter group is very practical and reliable when being applied to a shredder. And according to the difference of the secrecy grade of shredded paper, can also adjust the external diameter of the slitting blade 30, the quantity of the knife point portion 31, the distance of the adjacent knife point portion 31 and the distance between the adjacent slitting blades 30, meet the demands of different grades, and it is cheap to form high-efficient equally, and then can reduce the cost reduction of the kneader that has adopted this high secrecy shredded paper cutter group 100, and the shredded paper is effectual.
To sum up, the utility model discloses a high secret shredded paper cutter group 100 uses the slicing blade to assemble the cutter blade group of structure, simplifies the structure, cuts into the piece of paper into superfine square, reaches the high secret to the paper file.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A high security shredding cutter set comprising two cutter units, said cutter units comprising:
a cutter shaft;
the paper shredding machine comprises a cutter blade group, wherein the cutter blade group comprises at least one cutter blade, the number of the cutter blade groups is multiple, the cutter blade groups are sequentially spirally and equidistantly distributed on a cutter shaft along the axial direction of the cutter shaft, and the distance between the cutter blades corresponds to the maximum width of shredded paper strips to be shredded;
the cutting blade comprises a plurality of blade tip portions, the angle of each blade tip portion is 20-40 degrees, each blade tip portion is provided with a pressure angle, the pressure angle is 60.1-70 degrees, and the distance between every two adjacent blade tip portions corresponds to the maximum length of the shredded paper strips to be cut;
two cutter unit the cutter axle sets up side by side just the direction of the blade tip portion of cutting blade is opposite, two cutter unit the cutting blade is crisscross to be stacked and not contact.
2. The high security paper shredding knife assembly of claim 1, wherein the distance between adjacent said knife edge portions is 1.9-2.6mm and the distance between adjacent said cutting blades is 0.9-1.9 mm.
3. The high security paper shredding cutter group according to claim 1, wherein the center-to-center distance between two cutter units is 36.5mm, the thickness of the cutter blade is 0.9mm, the outer diameter size is 43.2mm, the number of the blade tips is 67, the distance between adjacent blade tips is 2.0mm, and the distance between adjacent cutter blades is 1 mm.
4. The high security paper shredding cutter set of claim 1 wherein the outer diameter dimension of said cutting blades is 43.8mm and the number of said nose portions is 68;
or the outer diameter of the cutting blade is 42.6mm, and the number of the blade tip parts is 66.
5. The high security paper shredding cutter group according to any one of claims 1 to 4, wherein the angle of the blade tip portion is 29.9 °, and the pressing angle of the blade tip portion is 60.1 °.
6. The high security paper shredding knife group as set forth in claim 1, wherein said knife unit further comprises:
the number of the space rings is multiple, the space rings and the cutting blades are sequentially sleeved on the cutter shaft at intervals, and the distance between every two adjacent cutting blades is equal to the thickness of the space rings;
the fixing piece is sleeved on the cutter shaft and abutted to the space ring at the edge or the cutter blade.
7. The high security paper shredding cutter set according to claim 6, wherein the cutter unit further comprises a paper stopper and a fixing shaft, the paper stopper is sleeved on the outer side of each spacer, the paper stopper has a shaft hole, and the fixing shaft passes through the plurality of coaxial shaft holes of the paper stoppers and fixes the positions of the plurality of paper stoppers.
8. The high security paper shredding cutter set according to claim 1, wherein the cross-sectional shape of the cutter shaft is a polygon with even number of sides or the cutter shaft is provided with a spiral groove in the circumferential direction.
9. The high security paper shredding knife assembly of claim 8 wherein the cross-section of the cutter shaft is in the shape of a regular hexagon, a regular octagon, a regular decagon, a regular dodecagon, a regular tetradecagon, or a regular hexadecagon.
10. The high security paper shredding cutter set according to claim 9, wherein the cutter blades have circular cutter holes, the circular cutter holes of the cutter blades of a single cutter blade set are coaxially arranged, when a plurality of cutter blade sets are spirally arranged, the number of the cutter blades of each cutter blade set is 4, between two adjacent cutter blade sets, the circular cutter hole of one cutter blade set rotates by one side relative to the cutter shaft, the circular cutter hole of the other cutter blade set is maintained, and the rotation directions of the circular cutter holes of the plurality of cutter blade sets are the same.
CN201920682184.2U 2018-08-23 2019-05-13 High-security paper shredding cutter set Active CN210097875U (en)

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CN201810965841.4A CN108579963A (en) 2018-08-23 2018-08-23 High secrecy paper shredding cutters group
CN2018109658414 2018-08-23

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Publication number Priority date Publication date Assignee Title
CN110142115A (en) * 2019-05-08 2019-08-20 马鞍山恒隆机械科技有限公司 A kind of cyclopentane gas detector tooth form spacer and its manufacturing method
CN110180652A (en) * 2019-07-15 2019-08-30 江苏欧密科技有限公司 A kind of shredder double blade stretching blade and blade assembly

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3112639A1 (en) * 1981-03-30 1982-10-07 Feinwerktechnik Schleicher & Co, 7778 Markdorf DEVICE FOR CRUSHING WASTE MATERIAL, e.g. BLOCKS OF PAPER
CN2366176Y (en) * 1998-10-14 2000-03-01 致伸实业股份有限公司 Knife set of disintegrating paper machine
CN2355799Y (en) * 1998-12-11 1999-12-29 李锦恭 Shredding device for new paper shredder
JP2000288418A (en) * 1999-04-08 2000-10-17 Shigumaa Giken Kk Rotary cutter for document shredder and its manufacture and document shredder
CN2656007Y (en) * 2003-10-27 2004-11-17 邬伟国 Hobbing cutter for paper cutting machine
CN201308851Y (en) * 2008-11-14 2009-09-16 深圳奥士达电子有限公司 Shredder and knife set mechanism
CN106733052A (en) * 2017-03-23 2017-05-31 成都万家健康管理股份有限公司 It is prevented from the cutter for paper grinder of circumferencial direction relative motion

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