An automatic paper shredder

Abstract

The application discloses an automatic paper shredder and belongs to the technical field of paper shredders. The automatic paper shredder comprises a paper shredding box body, a feeding opening is formed in the top of the paper shredding box body, a cutting unit for conveying and shredding waste paper is arranged at the top in the paper shredding box body, a collecting drawer is inserted into the front side of the paper shredding box body, a spraying device for softening paper scraps in the collecting drawer and a compression unit for extruding the damp paper scraps are arranged in the paper shredding box body. The automatic paper shredder integrates the functions of waste paper shredding, paper scrap softening and extrusion. Compared with a traditional paper shredder, the automatic paper shredder greatly expands the practicability of the equipment and reduces the process and cost of secondary treatment of the paper scraps.

Description

TECHNICAL FIELD

[0001] The present application relates to an automatic paper shredder, belonging to the technical field of paper shredders. BACKGROUND

[0002] In daily office and life scenes, paper is widely used, and a large amount of waste paper needs to be treated. Therefore, a paper shredder has become an essential office supply. A paper shredder is a machine for shredding and destroying paper. In order to achieve the purpose of security of discarded files, the paper is divided into many small pieces. The current paper shredder can cut credit cards, optical discs, etc. in addition to processing paper.

[0003] A paper shredder for preventing paper jam, as disclosed in Chinese Patent No. CN118416997A, includes a paper dust box, a shell cover is arranged on the paper dust box, a placing groove is formed in the central top of the shell cover, two bases are symmetrically arranged in the paper dust box, two horizontal rollers are arranged between the two bases, and the roller shaft is provided with blades at equal distances. The paper shredder for preventing paper jam is composed of a paper shredding mechanism by the cooperation of the roller, the blade and the motor.

[0004] The above-mentioned scheme has the following disadvantages in actual use:

[0005] The scheme adopts a micro electric push rod, a base plate, a top block and a spring to cooperate to realize the approach or separation of the two rollers. By controlling the mutual separation of the rollers, the paper jam can be easily pulled out. However, in actual use, the above-mentioned structure still has the phenomenon of paper jam when shredding thicker paper, and the above-mentioned structure has a single function, which can only realize the basic paper shredding function. There is no effective means for subsequent processing of the shredded paper, which is not convenient for subsequent recycling. SUMMARY

[0006] The present application aims to provide an automatic paper shredder to solve the problems in the background art.

[0007] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0008] Compared with the prior art, the application provides a design of an automatic paper shredder, which comprises a paper shredding box body, a feeding port is formed in the top of the paper shredding box body, a cutting unit for conveying and shredding waste paper is arranged on the top in the paper shredding box body, a collection drawer is inserted into the front side of the paper shredding box body, a spraying device for softening paper scraps in the collection drawer and a compression unit for extruding the wet paper scraps are arranged in the paper shredding box body; the cutting unit comprises two cutting shafts, mounting sleeves are sleeved on the cutting shafts, a plurality of cutting mounting rings are sleeved on the outer circumferential surface of the mounting sleeves, a plurality of shredding knives are arranged on the cutting mounting rings, the cutting mounting rings on the two cutting shafts are arranged in a staggered manner, and driving members are arranged below the two cutting shafts; the distance between the shredding knives on the two cutting shafts is adjusted by driving the two cutting shafts to move, so that the cutting requirements of different types of waste paper are met.

[0009] Preferably, the cutting unit further comprises two mounting plates, two mounting blocks are arranged in each of the mounting plates, two conveying rollers are connected to the mounting blocks through a main shaft, and the two conveying rollers are located directly above the two cutting shafts.

[0010] Preferably, two groups of driving units are arranged on one side of the paper shredding box body, the driving unit comprises a motor, the output shaft of the motor extends into the paper shredding box body and is provided with a synchronous wheel two, one end of the main shaft and the cutting shaft is provided with a synchronous wheel one, the synchronous wheel two and the two synchronous wheels one are sleeved with a synchronous belt, and one side of the inner wall of the paper shredding box body is provided with a tensioning wheel for tensioning the synchronous belt.

[0011] Preferably, the driving member comprises a fixed shaft, the fixed shaft is fixedly connected with the inner wall of the paper shredding box body, a plurality of connecting plates are sleeved on the fixed shaft, one side of the connecting plate is sleeved with the cutting shaft, the connecting plate is rotatably connected with the cutting mounting ring, the end of the cutting shaft is provided with a driving plate, the ends of the two driving plates are rotatably connected through a shaft body, a cylinder for moving the driving shaft body up and down is arranged in the paper shredding box body, and the cylinder is rotatably connected with the inner wall of the paper shredding box body through a fixed block.

[0012] Preferably, a plurality of adjusting plates are sleeved on the fixed shaft, the plurality of adjusting plates are respectively connected with the connecting plates, one side of the adjusting plate is provided with a limiting seat, a through sliding groove corresponding to the limiting seat is formed in the paper shredding box body, two limiting columns are sleeved on the limiting seat, one end of the two limiting columns is provided with a limiting plate, and a plurality of limiting holes corresponding to the limiting columns are formed in the paper shredding box body.

[0013] Preferably, the spraying device comprises a pump body and a water collecting tank arranged at the bottom of the paper shredding box body, the water inlet of the pump body is communicated with the water collecting tank in the paper shredding box body through a liquid inlet pipe, the water outlet of the pump body is provided with a liquid outlet pipe, the end of the liquid outlet pipe extends to the inside of the paper shredding box body and is provided with a flow divider, and a plurality of atomizing nozzles are arranged on the flow divider.

[0014] Preferably, the compression unit comprises two hydraulic cylinders, the output ends of the hydraulic cylinders extend to the inside of the paper shredding box body and are provided with plate bodies, two through grooves corresponding to the plate bodies are arranged on the collection drawer, and a pressing plate is slidably connected in the collection drawer.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The present application integrates the functions of waste paper shredding, paper chip softening and extrusion, greatly expands the practicability of the equipment compared with the traditional paper shredder, and reduces the subsequent process and cost of secondary treatment of paper chips.

[0017] The two cutting shafts are driven to move by the driving member, so that the distance between the crushing knives on the two cutting shafts is adjusted, the cutting demand of different types of waste paper is adapted, ideal crushing effect can be achieved whether it is thick paper or thin paper, the phenomenon of paper jamming can be effectively avoided, and the universality of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without creative labor.

[0019] Figure 1 It is a structural schematic view of the whole of the present application;

[0020] Figure 2 It is a structural sectional view of the whole of the present application;

[0021] Figure 3 It is a structural schematic view of the cutting unit of the present application;

[0022] Figure 4 It is a structural schematic view of the driving member of the present application;

[0023] Figure 5 It is a structural schematic view of the fixed shaft of the present application;

[0024] Figure 6Structure diagram of the driving unit of the application;

[0025] Figure 7 Structure exploded view of the spraying device and compression unit of the application.

[0026] In the figure: 1, paper shredder box; 2, feeding port; 3, mounting plate; 4, mounting block; 5, main shaft; 6, conveying roller; 7, cutting shaft; 8, mounting sleeve; 9, cutting mounting ring; 10, groove; 11, shredding knife; 12, connecting plate; 13, fixed shaft; 14, adjusting plate; 15, limiting seat; 16, through sliding groove; 17, limiting plate; 18, limiting column; 19, limiting hole; 20, driving plate; 21, air cylinder; 22, fixed block; 23, synchronous pulley one; 24, motor; 25, synchronous pulley two; 26, synchronous belt; 27, tension pulley; 28, collection drawer; 29, liquid permeation hole; 30, water collecting tank; 31, extrusion plate; 32, pump body; 33, liquid inlet pipe; 34, liquid outlet pipe; 35, flow divider; 36, atomizing nozzle; 37, hydraulic cylinder; 38, plate body. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0028] Please refer to Figures 1-7 The application provides a technical solution:

[0029] As shown in Figure 1 and Figure 2 , an automatic paper shredder includes a paper shredder box 1, a feeding port 2 is formed in the top of the paper shredder box 1, which facilitates the feeding of waste paper, a cutting unit is arranged at the top in the paper shredder box 1, which is used for the conveying and shredding of waste paper, a collection drawer 28 is inserted into the front side of the paper shredder box 1, a spraying device for softening the paper scraps in the collection drawer 28 and a compression unit for extruding the damp paper scraps are arranged in the paper shredder box 1. The application integrates the functions of waste paper shredding, paper scrap softening and extrusion, greatly expands the practicability of the equipment compared with the traditional paper shredder, and reduces the process and cost of subsequent secondary treatment of paper scraps.

[0030] As shown in Figure 3 and Figure 5As shown, the cutting unit includes two cutting shafts 7, each of which is sleeved with a mounting sleeve 8, the outer periphery of the mounting sleeve 8 is sleeved with a plurality of cutting mounting rings 9, the outer periphery of the mounting sleeve 8 is provided with a groove 10, the inner periphery of the cutting mounting ring 9 is provided with a protrusion corresponding to the groove 10, the cutting mounting ring 9 is provided with a plurality of crushing knives 11, the cutting mounting rings 9 on the two cutting shafts 7 are arranged in a staggered manner, ensuring the crushing effect, the lower part of the two cutting shafts 7 is provided with a driving member, the two cutting shafts 7 are driven to move by the driving member, so as to adjust the distance between the crushing knives 11 on the two cutting shafts 7 to meet the cutting needs of different types of waste paper.

[0031] Further, the cutting unit further includes two mounting plates 3, each of which is provided with two mounting blocks 4, the four mounting blocks 4 are connected with two conveying rollers 6 through the main shaft 5, the two conveying rollers 6 are located directly above the two cutting shafts 7, realizing stable conveying of the waste paper.

[0032] As shown in the figure, Figure 6 The side of the shredding box body 1 is provided with two groups of driving units, the driving unit includes a motor 24, the output shaft of the motor 24 extends into the shredding box body 1 and is provided with a synchronous wheel two 25, one end of the main shaft 5 and the cutting shaft 7 is provided with a synchronous wheel one 23, the synchronous wheel two 25 and the two synchronous wheel one 23 are sleeved with a synchronous belt 26, one side of the inner wall of the shredding box body 1 is provided with a tensioning wheel 27 for tensioning the synchronous belt 26, ensuring stable transmission.

[0033] As shown in the figure, Figure 4As shown, the driving member includes a fixed shaft 13 fixedly connected with the inner wall of the paper shredding box 1, a plurality of connecting plates 12 are sleeved on the fixed shaft 13, one side of the connecting plate 12 is sleeved with the cutting shaft 7, the connecting plate 12 is rotatably connected with the cutting mounting ring 9 respectively, the end of the cutting shaft 7 is provided with a driving plate 20, the ends of the two driving plates 20 are rotatable through the shaft body, the cylinder 21 for moving the shaft body up and down is arranged in the paper shredding box 1, the cylinder 21 is rotatably connected with the inner wall of the paper shredding box 1 through the fixed block 22, the shaft body is driven to move up and down through the cylinder 21, so as to adjust the distance between the two cutting shafts 7. At the same time, when cutting the waste paper, the driving plate 20 drives the two cutting shafts 7 to make reciprocating arc motion with the central axis of the fixed shaft 13 as the center through the control of the cylinder 21. Compared with the pure linear cutting action, the cutting path is more complex, and the cutting knife of the arc motion can cut the waste paper from multiple angles. For example, when cutting some thick multi-layer waste paper, the arc cutting path can better cut into the gap between the paper, making the cutting more delicate, and the waste paper can be cut into smaller and more uniform pieces. The arc reciprocating rotation makes the contact mode of the shredding knife 11 with the waste paper more diversified. In the linear cutting, the friction between the shredding knife 11 and the waste paper is mainly concentrated on one side of the blade, which is easy to cause the side to wear out quickly. The arc motion can make different parts of the blade contact the waste paper in turn, so that the wear is more evenly distributed on the blade, which can prolong the service life of the cutting knife and reduce the maintenance cost of the equipment.

[0034] Further, a plurality of adjusting plates 14 are sleeved on the fixed shaft 13, the adjusting plates 14 are connected with the connecting plates 12 respectively, one side of the adjusting plate 14 is provided with a limiting seat 15, a through sliding groove 16 corresponding to the limiting seat 15 is formed on the paper shredding box 1, two limiting columns 18 are sleeved on the limiting seat 15, one end of the two limiting columns 18 is provided with a limiting plate 17, a plurality of limiting holes 19 corresponding to the limiting columns 18 are formed on the paper shredding box 1, the limiting column 18 is separated from the limiting hole 19 by pulling the limiting plate 17, then the adjusting plate 14 is pushed to drive the connecting plate 12, the cutting mounting ring 9 and the shredding knife 11 to move, so as to adjust the distance between the shredding knives 11 on the same cutting shaft 7, and avoid the phenomenon of paper jam when shredding thick paper. After determining the position of the shredding knife 11, the limiting column 18 is inserted into the corresponding limiting hole 19 to fix the position of the shredding knife 11.

[0035] As Figure 2 and Figure 7As shown, the spraying device includes a pump body 32 and a water collecting tank 30 arranged at the bottom of the paper shredding box 1, the water inlet of the pump body 32 is connected with the water collecting tank 30 in the paper shredding box 1 through a liquid inlet pipe 33, the water outlet of the pump body 32 is provided with a liquid outlet pipe 34, the end of the liquid outlet pipe 34 extends to the inside of the paper shredding box 1 and is provided with a flow divider 35, a plurality of atomizing nozzles 36 are arranged on the flow divider 35, the liquid in the water collecting tank 30 can be atomized and sprayed out, the paper scraps in the collecting drawer 28 are softened, and the subsequent recycling is facilitated.

[0036] Further, the compression unit includes two hydraulic cylinders 37, the output ends of the hydraulic cylinders 37 extend to the inside of the paper shredding box 1 and are provided with plate bodies 38, two through grooves corresponding to the plate bodies 38 are arranged on the collecting drawer 28, and a pressing plate 31 is slidably connected in the collecting drawer 28, a plurality of liquid permeation holes 29 are arranged on the bottom of the collecting drawer 28, when the paper scraps are wet, the hydraulic cylinders 37 drive the plate bodies 38 to move, the pressing plate 31 cooperates with the plate bodies 38 to squeeze out the moisture in the paper scraps, and the moisture is discharged through the liquid permeation holes 29, so that the paper scraps are more easily stored.

[0037] The working process of the embodiment is as follows: the user puts the waste paper to be shredded into the paper shredding box 1 through the feeding port 2, the waste paper falls on the conveying roller 6, the motor 24 is started, the motor 24 drives the main shaft 5 to rotate through the synchronous wheel two 25, the synchronous belt 26 and the synchronous wheel one 23, and then drives the conveying roller 6 to operate, so as to stably convey the waste paper to the cutting shaft 7, and at the same time, the cutting shaft 7 rotates at high speed under the drive of the motor, the waste paper is shredded by the staggered arrangement of the shredding knives 11, when different types of waste paper such as thick card paper or thin printing paper are encountered, the cylinder 21 is started according to the preset program or manual instruction, the shaft body moves up and down, drives the driving plate 20 to move, and then adjusts the position of the cutting shaft 7, in another embodiment, the driving plate 20 drives the two cutting shafts 7 to make reciprocating arc motion with the central axis of the fixed shaft 13 as the center by controlling the cylinder 21, compared with the simple linear cutting action, the cutting path is more complex, and the cutting knives of the arc motion can cut the waste paper from multiple angles, the shredded paper scraps fall into the collecting drawer 28 below, in this process, the pump body 32 starts, the liquid (such as water or a specific softening agent solution) in the water collecting tank 30 is sucked in through the liquid inlet pipe 33, sent to the flow divider 35 through the liquid outlet pipe 34, and sprayed out by the atomizing nozzles 36, so as to uniformly atomize and spray the shredded paper scraps and the paper scraps in the collecting drawer 28, so as to soften them, every certain time, the hydraulic cylinder 37 starts, the plate body 38 moves, the pressing plate 31 slides relative to the collecting drawer 28 under the pressure, the moisture in the paper scraps is squeezed out, the moisture flows back to the water collecting tank 30 or is discharged from the paper shredding box 1 through the liquid permeation holes 29, the dried paper scraps after being squeezed are more easily stored for a long time, and the risk of mildewing is reduced.

[0038] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be made without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. An automatic paper shredder comprising a shredder housing (1), characterized in that, The top of the paper shredding box (1) is provided with a feeding opening (2), and a cutting unit for conveying and shredding waste paper is arranged at the top of the paper shredding box (1); a collection drawer (28) is inserted into the front side of the paper shredding box (1), and a spraying device for softening the paper scraps in the collection drawer (28) and a compression unit for extruding the damp paper scraps are arranged in the paper shredding box (1); The cutting unit comprises two cutting shafts (7), each of which is sleeved with a mounting sleeve (8), and a plurality of cutting mounting rings (9) are sleeved on the outer circumferential surface of the mounting sleeve (8); a plurality of shredding knives (11) are arranged on the cutting mounting rings (9); the cutting mounting rings (9) on the two cutting shafts (7) are arranged in a staggered manner; a driving member is arranged below the two cutting shafts (7), and the driving member drives the two cutting shafts (7) to move, so as to adjust the distance between the shredding knives (11) on the two cutting shafts (7) to meet the cutting requirements of different types of waste paper; The driving member comprises a fixed shaft (13) fixedly connected with the inner wall of the paper shredding box (1), a plurality of connecting plates (12) sleeved on the fixed shaft (13), one side of the connecting plate (12) sleeved with the cutting shaft (7), and the connecting plate (12) rotatably connected with the cutting mounting ring (9); the end of the cutting shaft (7) is provided with a driving plate (20), the ends of the two driving plates (20) are rotatably connected through a shaft body, and the paper shredding box (1) is provided with a cylinder (21) for driving the shaft body to move up and down, and the cylinder (21) is rotatably connected with the inner wall of the paper shredding box (1) through a fixed block (22); A plurality of adjusting plates (14) are sleeved on the fixed shaft (13), and the adjusting plates (14) are connected with the connecting plates (12), respectively; one side of the adjusting plate (14) is provided with a limiting seat (15), the paper shredding box (1) is provided with a through sliding groove (16) corresponding to the limiting seat (15), two limiting columns (18) are sleeved on the limiting seat (15), and one end of the two limiting columns (18) is provided with a limiting plate (17); the paper shredding box (1) is provided with a plurality of limiting holes (19) corresponding to the limiting columns (18).

2. The automatic paper shredder according to claim 1, wherein The cutting unit further comprises two mounting plates (3), each of which is provided with two mounting blocks (4); four mounting blocks (4) are connected with two conveying rollers (6) through a main shaft (5), and the two conveying rollers (6) are located directly above the two cutting shafts (7).

3. The automatic paper shredder according to claim 2, wherein, The side of the paper shredding box (1) is provided with two groups of driving units, the driving unit includes a motor (24), the output shaft of the motor (24) extends to the paper shredding box (1) and is provided with a synchronous wheel two (25), the main shaft (5) and the cutting shaft (7) are provided with a synchronous wheel one (23) on one end, the synchronous wheel two (25) and two synchronous wheel one (23) are sleeved with a synchronous belt (26), the inner wall of the paper shredding box (1) is provided with a tensioning wheel (27) for tensioning the synchronous belt (26).

4. The automatic paper shredder according to claim 1, wherein, The spray device includes a pump body (32) and a water collecting tank (30) arranged at the bottom of the paper shredding box (1), the water inlet of the pump body (32) is communicated with the water collecting tank (30) in the paper shredding box (1) through a liquid inlet pipe (33), the water outlet of the pump body (32) is provided with a liquid outlet pipe (34), the end of the liquid outlet pipe (34) extends to the inside of the paper shredding box (1) and is provided with a flow divider (35), the flow divider (35) is provided with a plurality of atomizing nozzles (36).

5. The automatic paper shredder according to claim 1, wherein, The compression unit includes two hydraulic cylinders (37), the output end of the hydraulic cylinder (37) extends to the inside of the paper shredding box (1) and is provided with a plate body (38), the collecting drawer (28) is provided with two through grooves corresponding to the plate body (38), the collecting drawer (28) is slidably connected with an extrusion plate (31), and the bottom of the collecting drawer (28) is provided with a plurality of liquid permeation holes (29).

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