CN111250234B

CN111250234B - Paper shredder

Info

Publication number: CN111250234B
Application number: CN202010086195.1A
Authority: CN
Inventors: 李炜
Original assignee: Lenovo Wanxiang Shenzhen Technology Co Ltd
Current assignee: Lenovo Wanxiang Shenzhen Technology Co Ltd
Priority date: 2020-02-11
Filing date: 2020-02-11
Publication date: 2022-03-22
Anticipated expiration: 2040-02-11
Also published as: CN111250234A

Abstract

The invention provides a paper shredder, which comprises a box body, a paper twisting roller set and a paper shredding knife, wherein the paper twisting roller set and the paper shredding knife are arranged in the box body; the laser assembly is provided with a laser head, and laser generated by the laser head irradiates a printing area of the paper. The paper shredder is additionally provided with the laser component on the basis of the traditional paper shredder, the laser generated by the laser component acts on the printing area of the paper to be shredded, and the ink or the ink powder forming information in the printing area is heated to deform or evaporate the information such as writing and the like, so that the elimination or fuzzy processing of the information is realized, and the risk of information leakage of the traditional paper shredder is effectively prevented.

Description

Paper shredder

Technical Field

The invention relates to the technical field of office equipment, in particular to a paper shredder.

Background

The paper shredder is composed of a group of rotating blades, a paper comb and a driving motor. The paper is fed from the middle of the mutually meshed blades and is divided into a plurality of small paper sheets so as to achieve the purpose of confidentiality. The paper shredding mode refers to a shape of paper shredded by a shredder after the paper is processed by the shredder. According to the composition mode of the paper shredding knife, the existing paper shredding mode comprises the following steps: crushed, granular, segmented, foamed, striped, filamentous, and the like.

However, in the above-described paper shredding method, information such as characters remains on the paper scraps, and there is a risk of disclosure by appropriate splicing and reasoning.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the paper shredder in the prior art cannot eliminate information such as characters on paper, and the like, thereby providing the paper shredder.

In order to solve the problems, the invention provides a paper shredder which comprises a box body, a paper twisting roller set and a paper shredding knife, wherein the paper twisting roller set and the paper shredding knife are arranged in the box body; the laser assembly is provided with a laser head, and laser generated by the laser head irradiates a printing area of the paper.

Further, the laser generated by the laser head irradiates at least the width direction of the printing area.

Further, the two laser assemblies are respectively arranged on two sides of the paper.

Further, the two laser assemblies are symmetrically arranged about the paper.

Further, laser subassembly still includes roll adjustment structure, the laser head sets up on the roll adjustment structure to adjust the laser head to the paper distance of paper.

Further, the roll adjustment structure has the setting and is in base and setting on the box inner wall are in screw rod on the base, the laser head sets up on the screw rod.

Furthermore, a cleaning roller is arranged between the laser assembly and the paper shredding knife, the paper is conveyed between the two cleaning rollers, and ink marks on the printing area are cleaned by the cleaning rollers.

Further, the rotating speed of the cleaning roller is greater than that of the pickup roller group.

Further, the cleaning roller is constructed in a roller structure with a brush covered surface.

The shredder also comprises a partition board arranged in the box body, the partition board divides the inner space of the box body into an information cleaning bin and a paper shredding bin positioned below the information cleaning bin, the laser assembly and the cleaning roller are arranged in the information cleaning bin, and the paper shredding knife is arranged in the paper shredding bin.

The paper shredder also comprises a fan arranged in the information cleaning bin, and the fan is used for adsorbing and collecting the toner cleaned by the cleaning roller.

Furthermore, the upper end part of the box body is provided with a first paper feeding port and a second paper feeding port which is arranged on the partition plate and corresponds to the first paper feeding port, and the paper twisting roller group is provided with a first paper twisting roller arranged below the first paper feeding port and a second paper twisting roller arranged below the second paper feeding port.

The technical scheme of the invention has the following advantages:

1. the paper shredder comprises a box body, a paper twisting roller set and a paper shredding knife, wherein the paper twisting roller set and the paper shredding knife are arranged in the box body; the laser assembly is provided with a laser head, and laser generated by the laser head irradiates a printing area of the paper.

The paper shredder is additionally provided with the laser component on the basis of the traditional paper shredder, the laser generated by the laser component acts on the printing area of the paper to be shredded, and the ink or the ink powder forming information in the printing area is heated to deform or evaporate the information such as writing and the like, so that the elimination or fuzzy processing of the information is realized, and the risk of information leakage of the traditional paper shredder is effectively prevented.

2. The laser generated by the laser head in the paper shredder at least covers the width direction of the printing area for irradiation, and as a preferred embodiment, the mode can reduce the coverage of the laser on the paper, only the laser with a certain width is ensured to cover the width direction of the printing area, and the information in the printing area is gradually eliminated along with the transmission of the paper.

3. The two laser assemblies in the paper shredder are respectively arranged on two sides of the paper, so that when the paper is printed on two sides, the requirement of processing the information on two sides of the paper simultaneously can be met, and the processing speed of waste paper is improved.

4. The two laser assemblies in the paper shredder are symmetrically arranged relative to the paper, and the arrangement has the advantages that the laser assemblies respectively positioned at the two sides of the paper can heat the same position on the paper at the same time, so that the temperature rise speed of ink or toner on the paper can be increased, the deformation or evaporation treatment of information on the paper can be accelerated, and the information processing speed can be increased.

5. The laser assembly in the paper shredder also comprises a distance adjusting structure, and the laser head is arranged on the distance adjusting structure so as to adjust the distance from the laser head to the paper surface of the paper. Because most of carriers of information on paper are ink or toner, the types of the corresponding ink or toner of different manufacturers are different, and the corresponding material compositions are different, when the information is processed by using laser, the information formed by different inks or toners is different in time, intensity and the like of laser irradiation under the influence of the conditions, and in order to ensure the final clearing effect of the information as far as possible, the distance from a laser head to the paper surface of the paper is adjusted to actively adjust and find the clearing effect desired by a user.

6. In the paper shredder, a cleaning roller is also arranged between the laser assembly and the paper shredding knife, the paper is conveyed between the two cleaning rollers, and ink marks on the printing area are cleaned by the cleaning rollers. The cleaning roller can shift or strip off the toner or ink heated by the laser, and the cleaning effect of the information is enhanced.

7. The rotating speed of the cleaning roller in the paper shredder is greater than that of the paper twisting roller group, and the design mode enables the cleaning roller and the paper twisting roller to have a rotating speed difference so that the cleaning roller generates a friction effect on a paper surface, and therefore the stripping effect of ink or toner from the paper surface is enhanced.

8. The upper end part of the box body of the paper shredder is provided with a first paper feeding port and a second paper feeding port which is arranged on the partition plate and corresponds to the first paper feeding port, the paper twisting roller set is provided with a first paper twisting roller arranged below the first paper feeding port and a second paper twisting roller arranged below the second paper feeding port, and the two paper twisting rollers are designed to ensure that two ends of paper are subjected to pulling force in the transmission process so as to ensure the smoothness of the paper, so that the distance from a laser head to the paper surface is effectively controlled, and the information cleaning effect is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a cross-sectional view of a shredder in an embodiment provided by the present invention.

Description of reference numerals:

1-a box body; 11-an information cleaning bin; 12-a paper shredding bin; 13-a first paper feed port;

2-a paper rubbing roller set; 21-a first pickup roller; 22-a second pickup roller;

3-a paper shredding knife;

4-a laser assembly; 41-a laser head; 42-a distance adjusting structure; 421-a base; 422-screw rod;

5-paper;

6-cleaning roller;

7-a partition plate; 71-a second paper feed port;

8-a fan.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

As shown in fig. 1, for the paper shredder provided in this embodiment, a box 1, and a paper-rubbing roller set 2 and a paper-shredding knife 3 which are arranged in the box 1, a laser assembly 4 is arranged at least on one side of a sheet 5 being transported, and the laser assembly 4 is located above the paper-shredding knife 3; the laser unit 4 has a laser head 41, and the laser beam generated by the laser head 41 is irradiated to the printing area of the sheet 5.

As shown in fig. 1, the box body 1 in this embodiment is a rectangular box body, and a first paper feeding port 13 is formed in the middle position of the upper end of the box body, the length of the first paper feeding port 13 in this embodiment is greater than the width of a4 paper, and when a user performs a paper shredding operation, the paper 5 enters the paper shredder through the first paper feeding port 13.

Of course, the shape of the case 1 may be triangular in other embodiments.

It should be noted that the print area in this embodiment generally refers to a print area on a paper surface, and there is a clear definition in the relevant printing software, and it is not described here. However, the laser beam is irradiated to the printing area, not the entire paper surface, and the waste of energy generated by the laser beam irradiation to the non-printing area can be reduced.

Therefore, the paper shredder in the embodiment is additionally provided with the laser component on the basis of the traditional paper shredder, the laser generated by the laser component 4 acts in the printing area of the paper 5 to be shredded, and the ink or the toner forming information in the printing area is heated to deform or evaporate the information such as writing and the like, so that the elimination or fuzzy processing of the information is realized, and the risk of information leakage of the traditional paper shredder is effectively prevented.

As shown in fig. 1, the laser heads 41 in this embodiment are arranged in a single row, and generate laser light that irradiates at least the width direction of the printing region. The mode can reduce the coverage of the laser on the paper, only the laser with a certain width is ensured to cover the width direction of the printing area, and the information in the printing area is gradually eliminated along with the transmission of the paper.

Further, the two laser assemblies 4 are symmetrically arranged with respect to the sheet 5 in this embodiment. The advantage of this kind of setting is that the laser unit 4 that is located respectively in the paper both sides can carry out heat treatment to the same position on paper 5 simultaneously, can improve the temperature rise speed of ink or powdered ink on paper 5, accelerates the deformation or the evaporation treatment of its information on paper 5, improves information processing's speed.

The laser assembly 4 in this embodiment further includes a distance adjusting structure 42, the laser head 41 is installed on the distance adjusting structure 42 to adjust the distance from the laser head 41 to the paper surface of the paper 5, the laser head 41 is provided with an installation seat when purchased, and the laser head 41 is locked on the distance adjusting structure 42 through a screw, specifically, the distance adjusting structure 42 in this embodiment has a base 421 installed on the inner side wall of the box 1 and a screw 422 installed on the base 421, the laser head 41 is installed on the screw 422, the base 421 is provided with a threaded hole adapted to the screw 422, the screw 422 moves in the threaded hole to drive the laser head 41 to move to adjust the distance from the laser head 41 to the paper surface, since most of information carriers on the paper are inks or toners, different manufacturers have different types of corresponding inks or toners, and have different material compositions, when the laser is used to process the paper, under the influence of the above conditions, the information of different ink or toner formation has difference to the time and intensity of laser irradiation, and in order to ensure the final cleaning effect of the information as much as possible, the distance from the laser head to the paper surface of the paper is adjusted to actively adjust and search the cleaning effect desired by the user.

In other embodiments, the two laser assemblies 4 are respectively arranged on two sides of the paper 5, so that symmetrical arrangement is not needed, and the system information on two sides of the paper can be processed simultaneously, and the processing speed of waste paper can be improved.

In other embodiments, the distance adjustment assembly may also be of a conventional gear rack structure, and the gear is driven by a motor to rotate, and the rotating gear drives the engaged rack to move forward or backward, so that the laser head 41 is mounted on the rack, which can also achieve distance adjustment.

As shown in fig. 1, a cleaning roller 6 is further disposed between the laser assembly 4 and the paper shredder 3, the paper 5 is transported between the two cleaning rollers 6, and the ink on the printing area is cleaned by the cleaning roller 6, and the cleaning roller 6 in this embodiment is a roller structure with a brush covered surface. The cleaning roller 6 can function to displace or peel off the toner or ink heated by the laser, enhancing the information cleaning effect.

Further, the rotating speed of the cleaning roller 6 in the embodiment is greater than that of the pickup roller group 2. The above design makes the cleaning roller 6 and the pickup roller have a difference in rotation speed, so that the cleaning roller 6 generates a friction effect on the paper surface, thereby enhancing the peeling effect of the ink or toner from the paper surface.

The present embodiment further includes a partition plate 7 disposed inside the box body 1, wherein the partition plate 7 is disposed near the upper end of the box body 1 and locked to the inner sidewall of the box body 1 by screws. The division board 7 divides the inner space of the box body 1 into an information cleaning bin 11 and a paper shredding bin 12 below the information cleaning bin 11, the laser component 4 and the cleaning roller 6 are arranged in the information cleaning bin 11, the paper shredding knife 3 is arranged in the paper shredding bin 12, and the division board 7 is arranged to prevent paper shreds from entering the pickup roller, the laser component 4 and the cleaning roller 6 and affecting the use effect.

The present embodiment further includes a fan 8 disposed in the information cleaning bin 11, specifically, the fan 8 is installed below the cleaning roller 6, toner dust and the like peeled off by the cleaning roller 6 are discharged to the outside along the surface of the partition plate 7 under the suction force of the fan 8, and thus the fan 8 performs suction collection of the toner cleaned by the cleaning roller 6.

Correspondingly, in consideration of environmental protection, a collection box may be installed at the air outlet of the fan 8 to collect the toner and the like collected by the fan 8.

In order to ensure that the paper 5 smoothly enters the paper shredding bin, the second paper feeding port 71 is arranged on the partition plate 7 corresponding to the first paper feeding port 13, and the pickup roller group 2 has a first pickup roller 21 arranged below the first paper feeding port 13 and a second pickup roller 22 arranged below the second paper feeding port 71. First pickup roller 21 and second pickup roller 22 in the above-mentioned are the common pickup roller structure in printer field, generally for the rotation axis surface cladding has the rubber layer, no specific explanation is again said here, it needs to explain that, the design of two sets of pickup rollers in this embodiment can guarantee that the paper receives the pulling force at transmission in-process both ends to guarantee its planarization, thereby the effective control laser head is to the distance of paper face, thereby guarantees the effect of information clearance.

In this embodiment, a control panel is installed on the upper end surface of the box 1 near the first paper feeding port 13, so that a user can operate the paper shredder conveniently.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A paper shredder comprises a box body (1), a paper twisting roller set (2) and a paper shredding knife (3) which are arranged in the box body (1), and is characterized in that,

at least one side of the paper (5) in transmission is provided with a laser component (4), and the laser component (4) is positioned above the paper shredding knife (3);

wherein the laser assembly (4) is provided with a laser head (41), and laser generated by the laser head (41) is irradiated on a printing area of the paper (5);

a cleaning roller (6) is arranged between the laser component (4) and the paper shredding knife (3); the paper (5) is conveyed between the two cleaning rollers (6), and ink marks on the printing area are swept by the cleaning rollers (6);

further comprising: set up and be in inside division board (7) of box (1), division board (7) will the inner space of box (1) is for information clearance storehouse (11) and is in shredded paper storehouse (12) of information clearance storehouse (11) below, laser subassembly (4) with cleaning roller (6) are arranged in information clearance storehouse (11), shredded paper sword (3) are arranged in shredded paper storehouse (12).

2. The shredder according to claim 1, wherein the laser head (41) generates laser light that irradiates at least the widthwise direction of the printing zone.

3. Shredder according to claim 1 or 2, characterized in that the two laser assemblies (4) are arranged on either side of the paper (5).

4. The shredder according to claim 3, characterized in that the two laser assemblies (4) are arranged symmetrically with respect to the sheet of paper (5).

5. The shredder according to claim 1 or 4, characterized in that the laser assembly (4) further comprises a distance adjusting structure (42), the laser head (41) being arranged on the distance adjusting structure (42) to adjust the paper distance of the laser head (41) to the paper (5).

6. The shredder according to claim 5, characterized in that the distance-adjusting structure (42) has a base (421) arranged on the inner side wall of the box (1) and a screw (422) arranged on the base (421), the laser head (41) being arranged on the screw (422).

7. The paper shredder according to claim 1, characterized in that the cleaning roller (6) has a rotational speed greater than the rotational speed of the set of pickup rollers (2).

8. Shredder according to claim 7, characterized in that the cleaning roller (6) is constructed as a roller structure covered with brushes on its surface.

9. The shredder according to claim 1, further comprising a fan (8) disposed in the information cleaning bin (11), the fan (8) enabling suction collection of toner cleaned by the cleaning roller (6).

10. The shredder according to claim 9, wherein the upper end of the box body (1) has a first paper feed opening (13), and a second paper feed opening (71) provided on the partition plate (7) corresponding to the first paper feed opening (13), and the pickup roller group (2) has a first pickup roller (21) provided below the first paper feed opening (13) and a second pickup roller (22) provided below the second paper feed opening (71).