Automatic paper shredder

Abstract

An automatic paper shredder relates to the field of office supplies and comprises a shell, a paper inlet is formed in the top of the shell, two paper shredding knives which synchronously rotate in a meshed manner in different directions are arranged in the shell, the paper shredding knives are positioned below the paper inlet, and common ends of the two paper shredding knives synchronously rotate in different directions by arranging synchronous gears respectively. A driving motor is arranged in the shell, a motor shaft gear is arranged at the position of a motor shaft of the driving motor, the driving motor drives the paper shredding cutter to rotate through a first-stage reduction gear and a second-stage reduction gear, a transmission system in the paper shredding machine is completely composed of gear transmission, and the paper shredding machine is high in efficiency, low in noise and easy to maintain; a large gap is formed between shredded paper in the waste paper basket, so that paper scraps need to be poured out frequently during working, the foldable paper pressing plate is utilized, the occupied space is small, the scrap pouring frequency can be greatly reduced, and the working efficiency is improved. The utility model has great practical application value and practical significance.

Description

Technical Field

[0001] The utility model relates to the technical field of office supplies, in particular to an automatic paper shredder. Background Art

[0002] An efficient and well-designed shredder can process a large number of documents quickly and efficiently, reducing user operation time and improving work efficiency. The structural design of the shredder is of great significance to ensure safe use. During the use of the shredder, users may come into contact with dangerous parts such as rotating blades. Therefore, the structural design should take into account the safety of operation to prevent users from being injured during use.

[0003] Currently, most paper shredders on the market use a combination of belt drive and gear drive. Due to the elastic sliding of the belt drive, its transmission efficiency is low, and the high-speed rotation of the belt causes loud noise and is difficult to maintain. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] Therefore, the first object of the present invention is to provide an automatic paper shredder, in which the transmission system is entirely composed of gear transmission, which is highly efficient, low-noise and easy to maintain.

[0006] To achieve the above-mentioned purpose, the utility model proposes an automatic paper shredder, comprising a shell, a paper feed port is opened at the top of the shell, two paper shredders that rotate synchronously and in opposite directions are arranged inside the shell, the paper shredders are located below the paper feed port, and the common ends of the two paper shredders rotate synchronously and in opposite directions by respectively setting synchronous gears, a driving motor is arranged inside the shell, a motor shaft gear is arranged at the motor shaft of the driving motor, a reduction shaft is arranged inside the shell, a primary reduction gear is arranged at one end of the reduction shaft, the primary reduction gear is meshed with the motor shaft gear, and a reduction shaft output gear is arranged at the other end of the reduction shaft, and a secondary reduction gear is arranged at the end of one of the paper shredders away from the synchronous gear, and the secondary reduction gear is meshed with the reduction shaft output gear.

[0007] In addition, the automatic paper shredder proposed in the utility model may also have the following additional technical features:

[0008] Furthermore, a waste paper basket is arranged below the shredder, and a paper pressing board assembly is arranged inside the waste paper basket, and the paper pressing board assembly includes a paper pressing board, a first slide groove and a second slide groove, wherein the paper pressing board is arranged on the inner side of the waste paper basket, and the first slide groove and the second slide groove are opened on the back side of the waste paper basket in parallel with each other, and a torsion shaft is arranged at the bottom of the paper pressing board, and a sliding buckle is hinged at one end of the torsion shaft, and the sliding buckle is slidably adapted to the first slide groove, and a torsion rod is fixedly connected to the other end of the torsion shaft, and the torsion rod slides through the second slide groove.

[0009] Furthermore, a limiting block is arranged at the middle position of the bottom of the paper pressing board.

[0010] Furthermore, the surface of the paper pressing board is provided with hollow mesh holes, and the end of the torsion rod away from the torsion axis is provided with a handle, and the handle and the torsion rod are perpendicular to each other.

[0011] Furthermore, an import roller assembly is arranged below the paper feed port, and the import roller assembly includes an import roller and an import motor, wherein the import roller is rotatably arranged below the paper feed port, the import motor is arranged inside the shell, and the power shaft of the import motor is connected to the import roller.

[0012] Furthermore, a paper support board for placing paper is provided on one side of the paper inlet.

[0013] Beneficial effects:

[0014] 1. The transmission system of the utility model is entirely composed of gear transmission, which is highly efficient, low-noise and easy to maintain.

[0015] 2. The utility model utilizes a foldable press paper, which occupies a small space and can greatly reduce the number of chip reversing times, thereby improving work efficiency.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1 It is a schematic diagram of the overall structure of an automatic paper shredder according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of an automatic paper shredder according to an embodiment of the utility model;

[0020] Figure 3Structural schematic diagram of the shredder blade in an automatic shredder according to an embodiment of the present utility model from the first perspective;

[0021] Figure 4 Structural schematic diagram of the shredder blade in an automatic shredder according to an embodiment of the present utility model from the second perspective;

[0022] Figure 5 Structural schematic diagram of the pressing plate assembly in an automatic shredder according to an embodiment of the present utility model;

[0023] Figure 6 Structural schematic diagram of the pressing plate in an automatic shredder according to an embodiment of the present utility model;

[0024] Figure 7 Working state diagram of the pressing plate in an automatic shredder according to an embodiment of the present utility model when receiving shredded paper;

[0025] Figure 8 Working state diagram of the pressing plate in an automatic shredder according to an embodiment of the present utility model when pressing shredded paper.

[0026] As shown in the figure: 1. Support plate; 101. Paper inlet; 102. Feed roller assembly; 103. Feed roller; 104. Feed motor; 2. Housing; 3. Secondary reduction gear; 4. Shredder blade shaft end plate; 5. Shredder blade bearing; 6. Pressing plate assembly; 61. Pressing plate; 62. Torsion shaft; 63. Sliding buckle; 631. First chute; 64. Torsion rod; 65. Handle; 651. Second chute; 66. Limit block; 7. Waste paper basket; 8. Driving motor; 9. Motor shaft; 10. Motor shaft bearing; 11. Synchronous gear; 13. Shredder blade shaft; 14. Reduction shaft bearing; 15. Reduction shaft output gear; 16. Reduction shaft; 17. Motor shaft gear; 18. Motor shaft end seat; 19. Reduction shaft end seat; 20. Primary reduction gear; 21. Shredder blade. Detailed implementation manners

[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model. On the contrary, the embodiments of the present utility model include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0028] The automatic shredder according to the embodiment of the present utility model will be described below with reference to the drawings.

[0029] As Figures 1-8As shown in the figure, the automatic shredder provided by the embodiment of the present utility model includes a housing 2. A paper inlet 101 is opened at the top of the housing 2. Inside the housing 2, there are two shredding knives 21 that rotate synchronously and in opposite directions. Inside the shredding knife 21, a shredding knife shaft 13 is fixedly arranged. At both ends of the shredding knife shaft 13, there are shredding knife bearings 5. The shredding knife bearings 5 are connected to the housing 2 through the arrangement of shredding knife shaft end plates 4. The shredding knife 21 is located below the paper inlet 101, and the common ends of the two shredding knives 21 rotate synchronously and in opposite directions respectively through the arrangement of synchronous gears 11. Inside the housing 2, there is a driving motor 8. At the motor shaft 9 of the driving motor 8, there is a motor shaft gear 17. At the end of the motor shaft gear 17, there is a motor shaft bearing 10. The two ends of the motor shaft bearing 10 are connected to the housing 2 through the arrangement of motor shaft end seats 18. Inside the housing 2, there is a reduction shaft 16. At the end of the reduction shaft 16, there is a reduction shaft bearing 14. The outside of the reduction shaft bearing 14 is connected to the housing 2 through the arrangement of reduction shaft end seats 19. One end of the reduction shaft 16 is provided with a first-stage reduction gear 20, and the first-stage reduction gear 20 meshes with the motor shaft gear 17. The other end of the reduction shaft 16 is provided with a reduction shaft output gear 15. At one end of one of the shredding knives 21 away from the synchronous gear 11, there is a second-stage reduction gear 3, and the second-stage reduction gear 3 meshes with the reduction shaft output gear 15.

[0030] Specifically, before the shredder is used, the driving motor 8 rotates to drive the motor shaft gear 17 to rotate. The motor shaft gear 17 drives the first-stage reduction gear 20 to rotate. The first-stage reduction gear 20 drives the reduction shaft 16 and the reduction shaft output gear 15 to rotate. The reduction shaft output gear 15 drives the second-stage reduction gear 3 to rotate. The second-stage reduction gear 3 drives one of the shredding knives 21 to rotate. The shredding knife 21 drives the other shredding knife 21 to rotate synchronously and in opposite directions through the synchronous gear 11, achieving the effect of cutting the paper.

[0031] During the shredding process, the paper is put in from the paper inlet 101. The paper enters between the two shredding knives 21 and is shredded. Subsequently, the shredded waste paper falls from the bottom of the shredding knives 21 into the inside of the housing 2 and is collected, completing the shredding work of the paper. During the above-mentioned shredding process, the transmission system of the shredding knife 21 is all composed of gear transmission, which is more efficient, has lower noise and is easier to maintain compared with the traditional belt transmission.

[0032] In an embodiment of the present utility model, as Figure 5 and Figure 6As shown in the figure, a wastepaper basket 7 is provided below the paper shredder 21. A pressing plate assembly 6 is arranged inside the wastepaper basket 7. The pressing plate assembly 6 includes a pressing plate 61, a first chute 631 and a second chute 651. Among them, the pressing plate 61 is arranged inside the wastepaper basket 7, and the first chute 631 and the second chute 651 are arranged in parallel on the back side of the wastepaper basket 7. A torsion shaft 62 is arranged at the bottom of the pressing plate 61. One end of the torsion shaft 62 is hinged with a sliding buckle 63, and the sliding buckle 63 is slidably adapted to the first chute 631. The other end of the torsion shaft 62 is fixedly connected with a torsion rod 64, and the torsion rod 64 slidably penetrates through the second chute 651.

[0033] The surface of the pressing plate 61 is provided with hollowed-out mesh holes for discharging the air in the paper scraps. A handle 65 is arranged at the end of the torsion rod 64 away from the torsion shaft 62, and the handle 65 is perpendicular to the torsion rod 64.

[0034] Specifically, when the shredded paper falls into the wastepaper basket 7, since the shredded paper scraps are relatively fluffy, at this time, the handle 65 and the sliding buckle 63 are pushed upward together. When the handle 65 and the sliding buckle 63 reach the topmost position, the handle 65 is rotated upward to make the horizontal handle 65 vertical. At this time, the pressing plate 61 in the wastepaper basket 7 becomes horizontal. Then, the handle 65 is pushed downward, and the pressing plate 61 will fall under the action of gravity. The pressing plate 61 squeezes the fluffy paper scraps, releasing the space above the wastepaper basket 7. After the paper is squeezed, the vertical handle 65 is repeatedly changed to horizontal. At this time, the pressing plate 61 becomes vertical and leans against one side of the wastepaper basket 7, facilitating the waste paper above to fall into the wastepaper basket 7.

[0035] In addition, a limiting block 66 is arranged at the middle position of the bottom of the pressing plate 61. When the pressing plate 61 is horizontal, the rotation of the pressing plate 61 is limited by the limiting block 66, so that the pressing plate 61 is horizontally pressed down to flatten the paper scraps.

[0036] In an embodiment of the present utility model, as Figure 2 shown, a guiding roller assembly 102 is arranged below the paper inlet 101. The guiding roller assembly 102 includes a guiding roller 103 and a guiding motor 104. Among them, the guiding roller 103 is rotatably arranged below the paper inlet 101, the guiding motor 104 is arranged inside the housing 2, the power shaft of the guiding motor 104 is connected with the guiding roller 103, and a paper supporting plate 1 for placing paper is arranged on one side of the paper inlet 101.

[0037] Specifically, after the paper is fed into the paper inlet 101, in order to make the paper accurately enter between the two paper shredders 21, after the paper enters the paper inlet 101, it enters the bottom of the guiding roller 103. The guiding roller 103 is driven by the guiding motor 104 to accurately feed the paper between the two paper shredders 21 for shredding.

[0038] For the sake of clearly explaining the above embodiments, refer to Figures 1-8, the specific working principle of the automatic shredder of the present utility model is as follows:

[0039] The steps of using the shredder are as follows: First, place the paper on the paper support board 1, and feed the paper through the paper inlet 101. The paper enters the bottom of the guiding roller 103. The guiding roller 103 is driven by the guiding motor 104 and can accurately send the paper between the two shredder blades 21 for shredding.

[0040] Next, the driving motor 8 rotates to drive the motor shaft gear 17 to rotate. The motor shaft gear 17 causes the first-stage reduction gear 20 to rotate. The first-stage reduction gear 20 drives the reduction shaft 16 and the reduction shaft output gear 15 to rotate. The reduction shaft output gear 15 drives the second-stage reduction gear 3 to rotate. The second-stage reduction gear 3 drives one of the shredder blades 21 to rotate. This shredder blade 21 drives the other shredder blade 21 to rotate synchronously and in opposite directions through the synchronizing gear 11, thereby realizing the cutting of the paper.

[0041] During the shredding process, the paper is fed through the paper inlet 101. The paper is shredded between the two shredder blades 21, and the shredded waste paper falls from the bottom of the shredder blades 21 into the waste paper basket 7. Since the shredded paper scraps are relatively fluffy, at this time, push the handle 65 and the sliding buckle 63 upward together. When the handle 65 and the sliding buckle 63 reach the top, rotate the handle 65 upward to make the horizontal handle 65 vertical. At this time, the pressure plate 61 in the waste paper basket 7 becomes horizontal. Then push the handle 65 downward, and the pressure plate 61 falls under the action of gravity, thereby squeezing the fluffy paper scraps and releasing the space above the waste paper basket 7. After the paper is squeezed, rotate the vertical handle 65 back to horizontal again. At this time, the pressure plate 61 becomes vertical and leans against one side of the waste paper basket 7, facilitating the waste paper above to fall into the waste paper basket 7.

[0042] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An automatic shredder, characterized in that, It includes a housing (2). A paper inlet (101) is provided at the top of the housing (2). Inside the housing (2), there are two shredders (21) that rotate synchronously and meshingly in opposite directions. The shredders (21) are located below the paper inlet (101). The common ends of the two shredders (21) rotate synchronously and in opposite directions respectively through the setting of synchronous gears (11). Inside the housing (2), there is a driving motor (8). At the motor shaft (9) of the driving motor (8), there is a motor shaft gear (17). Inside the housing (2), there is a reduction shaft (16). At one end of the reduction shaft (16), there is a first-stage reduction gear (20). The first-stage reduction gear (20) meshes with the motor shaft gear (17). At the other end of the reduction shaft (16), there is a reduction shaft output gear (15). At one end of one of the shredders (21) away from the synchronous gear (11), there is a second-stage reduction gear (3). The second-stage reduction gear (3) meshes with the reduction shaft output gear (15).

2. The automatic paper shredder according to claim 1, characterized in that, Below the shredders (21), there is a waste paper basket (7). Inside the waste paper basket (7), there is a pressing plate assembly (6). The pressing plate assembly (6) includes a pressing plate (61), a first chute (631), and a second chute (651). Among them, the pressing plate (61) is arranged inside the waste paper basket (7). The first chute (631) and the second chute (651) are opened on the back side of the waste paper basket (7) in parallel. At the bottom of the pressing plate (61), there is a torsion shaft (62). One end of the torsion shaft (62) is hinged with a sliding buckle (63). The sliding buckle (63) is slidably adapted to the first chute (631). The other end of the torsion shaft (62) is fixedly connected with a torsion rod (64). The torsion rod (64) slidably penetrates through the second chute (651).

3. The automatic paper shredder according to claim 2, characterized in that, The surface of the pressing plate (61) is provided with hollowed-out mesh holes. At the end of the torsion rod (64) away from the torsion shaft (62), there is a handle (65). The handle (65) is perpendicular to the torsion rod (64).

4. The automatic paper shredder according to claim 2, characterized in that, At the middle position of the bottom of the pressing plate (61), there is a limiting block (66).

5. The automatic paper shredder according to claim 1, wherein, Below the paper inlet (101), there is an inlet roller assembly (102). The inlet roller assembly (102) includes an inlet roller (103) and an inlet motor (104). Among them, the inlet roller (103) is rotatably arranged below the paper inlet (101). The inlet motor (104) is arranged inside the housing (2). The power shaft of the inlet motor (104) is connected to the inlet roller (103).

6. The automatic paper shredder according to claim 1, wherein On one side of the paper inlet (101), there is a paper support plate (1) for placing papers.

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