Confidential file destroying device for economic management

Abstract

The invention relates to the technical field of economic management equipment, and discloses a confidential file destroying device for economic management, the confidential file destroying device comprises a shell, a protective cover and a shell, the upper end of the protective cover is provided with a mounting port, the upper end of the shell is sleeved in the mounting port, and the lower end of the shell is fixedly connected with the edge of the lower end of the protective cover through a bolt; a feeding port is formed in the upper end of the shell, a feeding hopper is fixedly connected to the feeding port, a crushing mechanism is installed in the shell and composed of a fixed plate, a movable plate and a pressing plate, the crushing mechanism enables a plurality of holes to be formed in the surface of paper through extrusion, a plurality of fragments are cut out through the crushing mechanism, and an opening is formed in the lower end of the shell. According to the confidential file destroying device for economic management, broken paper can be torn into irregular paper scraps, the paper cannot be spliced, character information on the paper scraps can be further physically destroyed after the paper scraps are torn, and meanwhile the size of the paper scraps can be compressed after the paper scraps are torn, so that the storage capacity of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of economic management equipment, in particular to a confidential document destruction device for economic management. Background Art

[0002] Economic management work is highly private, and involves a lot of fund management information during the work process. Paper documents of economic work may contain important information on business management. In order to avoid the use of paper documents and the leakage of important information when they are discarded, especially some confidential economic documents, although the confidentiality period has passed, there is still a possibility of leakage. Therefore, when discarding economic management paper documents, they need to be shredded by a shredder to prevent information leakage. Therefore, timely physical destruction of confidential paper documents is an important step in preventing information leakage. At present, the device for destroying paper documents is to cut the paper into strips or sheets through the rotating tool in the device. After the shredded paper pieces are mixed, the information on the paper can be confused. The shredded paper can then be collected and recycled by a recycling agency to achieve resource reuse.

[0003] At present, the existing paper shredders use cutting to destroy document papers. Although the strips and sheets of shredded paper have changed in structure, there is a great chance that the destroyed document fragments can be spliced ​​and restored, and the text on the paper is relatively complete after splicing, making it easy to know the information on the paper. However, there is still a high risk of leaking confidential information. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a confidential document destruction device for economic management, which solves the problem that although there is a high probability that the document fragments after destruction can be spliced ​​and restored, and the paper text is relatively complete after splicing, making it easy to know the paper information, there is still a high risk of leaking confidential information.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a confidential document destruction device for economic management, comprising a housing, a protective cover and a shell, wherein the upper end of the protective cover is provided with a mounting opening, the upper end of the shell is sleeved in the mounting opening, and the lower end of the shell is fixedly connected to the lower end edge of the protective cover by bolts;

[0008] The upper end of the shell is provided with a feed port, and a feed hopper is fixedly connected to the feed port. A crushing mechanism is installed in the shell, and the crushing mechanism is composed of a fixed plate, a movable plate and a pressing plate. The crushing mechanism forms a plurality of holes on the surface of the paper and cuts out a plurality of fragments by extrusion;

[0009] The lower end of the shell is provided with an opening, and a transverse plate is fixedly connected to the opening, and the upper end of the transverse plate is provided with a fragment discharge port and a whole sheet discharge port, and the whole sheet discharge port is fixedly connected to two side plates, and two end covers are fixedly connected between the two side plates and provided with a shredding mechanism, and the shredding mechanism tears the shredded paper into irregular paper scraps, and can roll the shredded paper to reduce the volume of the paper scraps;

[0010] The upper end of the shell is provided with a rectangular opening, a boss is provided at the rectangular opening, the upper end of the protective cover is provided with a connecting portion, the connecting portion is fixed on the boss, one end of the shell is provided with a discharge port, a receiving box is provided in the discharge port.

[0011] Preferably, the crushing mechanism includes a plurality of screw rods, and the plurality of screw rods are symmetrically rotatably connected to the two sides of the shell through the first bearing seat, a threaded sleeve is sleeved on the rod wall of the screw rod, and one side of the threaded sleeve is fixedly connected to two brake plates, and the side wall of the shell is provided with a through hole, and the two brake plates pass through the through hole and are located on both sides of the movable plate, and the side wall of the movable plate is sleeved with two guide rods through the guide hole, and the two guide rods are fixed between the two brake plates, and the side wall of the movable plate is fixedly connected with a plurality of punching rods distributed in a rectangular array, the fixed plate is fixed in the shell and is provided with a plurality of punching holes matching the punching rods, and the pressure plate is arranged between the fixed plate and the movable plate and sleeved on the punching rod through a plurality of through holes;

[0012] A reduction motor is fixedly connected to one side of the shell, and two output shafts are fixedly connected to the output end of the reduction motor. A first bevel gear is fixedly connected to the shaft wall of the two output shafts, a second bevel gear is meshed with one side of the first bevel gear, a rotating shaft is fixedly connected at the center of the second bevel gear, and a worm is fixedly connected to both ends of the rotating shaft. The two worms and the rotating shaft are rotatably connected to one side of the shell through a second bearing seat, a worm wheel is meshed with one side of the worm, and the worm wheel is coaxially fixedly connected to one end of the lead screw.

[0013] Preferably, a grid-shaped groove is provided on one side of the fixed plate, and the groove is connected to the punching hole, a grid frame is fixedly connected in the groove, one side of the grid frame is located in the punching hole and forms a cross-shaped cutting portion, and one end of the punch rod is provided with a cross-shaped incision matching the zigzag cutting portion.

[0014] Preferably, the side wall of the shell is rotatably connected to two spline gauges via rolling bearings, one end of the two spline gauges is fixedly connected to a third bevel gear, one side of the third bevel gear is meshed with a fourth bevel gear, and the fourth bevel gear is fixed to the output shaft, one end of the spline gauge extends into the shell and is sleeved with a spline shaft, and a fixing frame is rotatably connected to the shaft wall of the spline shaft via rolling bearings, the end of the fixing frame is fixed to the brake plate, two discs are provided on one side of the fixing frame, and protrusions are provided on opposite sides of the two discs, one of the discs is fixed to one side of the movable plate, and the other disc is coaxially fixed to one end of the spline shaft.

[0015] Preferably, circular rings are fixedly connected at the four corners of the movable plate, and one end of each of the circular rings is fixedly connected to a sleeve, a spring is sleeved in the sleeve, one end of the spring is fixedly connected to one side of the pressure plate, the other end of the spring extends into the sleeve and is fixedly connected to one side of the circular ring, a cross bar is sleeved in the circular ring, the cross bar passes through the spring and is fixed to one side of the pressure plate, and a directional rod is sleeved on the side wall of the shell through a directional hole, and one end of the directional rod is fixedly connected to one end of the cross bar.

[0016] Preferably, a notch is provided at the lower end of the pressure plate, a mounting frame is sleeved in the notch, a first roller is rotatably connected in the mounting frame, an electromagnet is fixedly connected to the upper end of the transverse plate, a permanent magnet and two guide columns are fixedly connected to one side of the mounting frame, a guide sleeve is sleeved on the side walls of the two guide columns, the guide sleeve is fixed to the upper end of the transverse plate, a tension spring is fixedly connected to one side of the guide sleeve, one end of the tension spring is fixedly connected to one side of the mounting frame, a right-angle opening is provided at the lower end of the fixed plate, a second roller is rotatably connected in the right-angle opening.

[0017] Preferably, the shredding mechanism includes a crushing roller, the central axis of the crushing roller is rotatably connected to the two end covers through a needle bearing, one side of one of the side plates is fixedly connected to a fixed knife group, the blade of the fixed knife group cooperates with the crushing teeth of the crushing roller, the upper end of the fixed knife group is fixedly connected to an inclined portion, the upper end of the inclined portion is flush with the upper end of the cross plate, one side of the other side plate is provided with a shielding portion, one side of the shielding portion is provided with an arc surface that cooperates with the crushing roller, one side of the side plate is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a driving sprocket, one end of the central axis of the crushing roller passes through a needle bearing and is fixedly connected to a first sprocket, and a first chain is wound around the first sprocket and the second sprocket.

[0018] Preferably, a drive shaft is rotatably connected between the two end covers via a roller bearing, the drive shaft is located below the crushing roller and has a plurality of nylon strips fixedly connected to the shaft wall, one end of the drive shaft passes through the roller bearing and is fixedly connected to a second sprocket, and the second sprocket is wound around the first chain.

[0019] Preferably, a pair of rollers are rotatably connected between the two end covers via ball bearings, one end of the support shafts of the two pairs of rollers passes through the ball bearings and is fixedly connected to a spur gear, the two spur gears are meshed, a third sprocket is fixedly connected to the shaft wall of one of the support shafts, a second chain is commonly wound around the driving sprocket and the third sprocket, guide blocks are fixedly connected to the opposite sides of the two side plates, arc grooves matching the side walls of the pair of rollers are provided on the opposite sides of the two guide blocks, and an inclined surface is provided on the upper end of the guide block.

[0020] Preferably, baffles are provided on both opposite sides of the pressing plate, and the two baffles are fixedly connected to one side of the fixed plate. The pressing plate, the fixed plate and the two side plates form a crushing chamber with a rectangular structure.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the present invention provides a confidential document destruction device for economic management, which has the following beneficial effects:

[0023] 1. When the present invention is in use, a paper document is fed into a crushing chamber, and the paper passes through the whole sheet discharging port and falls into the shredding mechanism, and then the crushing mechanism is started to work. The crushing mechanism forms a plurality of holes on the surface of the paper by squeezing and cuts out a plurality of fragments. At this time, a plurality of holes with missing information can be formed on the paper, and at this time, the text information on the paper can be fragmented first, and when a plurality of small fragments are mixed, the difficulty of splicing and integration is greatly increased. After the punching is completed, the crushing mechanism is stopped and reset, and then the electromagnet is started first to generate the same magnetic pole as the permanent magnet. The magnetic repulsion force generated at this time pushes the mounting frame to move the first roller, and the movement of the first roller cooperates with the second roller to squeeze the paper, and at the same time, the shredding mechanism is started to tear the shredded paper into irregular paper scraps, so that the paper can be completely fragmented, and the text information on the shredded paper can be further physically destroyed, so that the text information on the paper is completely destroyed, and at the same time, the shredded paper is rolled to reduce the volume of the paper scraps, which can improve the storage capacity of the equipment.

[0024] 2. The crushing mechanism provided in the present invention, when in use, the reduction motor drives the transmission shaft to rotate the first bevel gear, the rotation of the first bevel gear drives the second bevel gear to rotate the rotating shaft, the rotation of the rotating shaft drives the worm to rotate the worm wheel, the rotation of the worm wheel drives the lead screw to rotate the threaded sleeve, the rotation of the threaded sleeve drives the brake plate to force the movable plate, the movable plate is forced to drive the punch rod to move and penetrate into the punching hole on the fixed plate, at this time, the punch rod and the punching hole can be used to punch out a circular hole on the paper and form a disc, the disc is further pushed by the punch rod to contact the grid frame, the grid frame uses the cross-shaped incision to crush the disc, so that the disc is further broken into four fan-shaped structure fragments, during the punching process, the elastic expansion and contraction of the spring can make the punch rod reset, and the paper stuck on the punch rod can be pushed out by the pressure plate, so that a certain impact force can be exerted during punching, so that the impact force of the punch rod is increased when processing multiple documents.

[0025] 3. The shredding mechanism provided in the present invention, when in use, starts the driving motor to rotate the active sprocket, the rotation of the active sprocket drives the first chain to rotate the first sprocket, the rotation of the first sprocket drives the crushing roller to rotate, when the crushing roller rotates, it drives the use of the rolling teeth to tear the paper first, the torn paper is taken away by the rolling teeth and contacts the fixed knife group to be further broken, and at the same time, the first chain drives the second sprocket to rotate the driving shaft, when the driving shaft rotates, the nylon strip is used to scrape off the paper pieces adhering to the rolling teeth, so as to avoid the paper pieces being mixed in the rolling teeth and affecting the next step of paper breaking, and at the same time, the active gear drives the second chain to rotate the third sprocket, the rotation of the third sprocket drives the support shaft to rotate the counter-roll, and the counter-roll is rotated by the spur gear, at this time, the paper pieces fall on the counter-roll, are squeezed and transported, and finally fall into the receiving box, so that the paper can be shredded and the shredded paper can be rolled, the volume of the shredded paper can be reduced, and it is convenient to collect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a confidentiality document destruction device for economic management proposed by the present invention;

[0027] Figure 2 The invention provides a confidential document destruction device for economic management. Figure 1 A cross-sectional structural diagram of ;

[0028] Figure 3 This is a schematic diagram of the structure of a protective cover and a housing in a confidential document destruction device for economic management proposed by the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of a shell in a confidential document destruction device for economic management proposed by the present invention;

[0030] Figure 5 A cross-sectional view of a shell of a confidential document destruction device for economic management proposed by the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of a fixed plate, a baffle plate and a pressure plate in a confidential document destruction device for economic management proposed by the present invention;

[0032] Figure 7 This is a schematic structural diagram of a threaded sleeve, a movable plate and a punch in a confidential document destruction device for economic management proposed by the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of a fixed plate, a pressing plate, a movable plate and a punch in a confidential document destruction device for economic management proposed by the present invention;

[0034] Fig. 9 This is a structural schematic diagram of a fixed plate and a grid frame in a confidential document destruction device for economic management proposed by the present invention;

[0035] Fig.10 This is a schematic diagram of the structure of a moving plate and a punch in a confidential document destruction device for economic management proposed by the present invention;

[0036] Fig.11 This is a schematic diagram of the structure of a first roller, an electromagnet and a horizontal plate in a confidential document destruction device for economic management proposed by the present invention;

[0037] Fig.12 A schematic diagram of the structure of the shredding mechanism in a confidential document destruction device for economic management proposed by the present invention Figure 1 ;

[0038] Fig.13 A schematic diagram of the structure of the shredding mechanism in a confidential document destruction device for economic management proposed by the present invention Figure 2 ;

[0039] Fig.14 A schematic diagram of the structure of the shredding mechanism in a confidential document destruction device for economic management proposed by the present invention Figure 3 .

[0040] In the figure: 1, housing; 2, protective cover; 3, housing; 4, feed hopper; 5, receiving box; 6, screw; 7, worm; 8, worm wheel; 9, threaded sleeve; 10, first bevel gear; 11, second bevel gear; 12, rotating shaft; 13, side plate; 14, driving motor; 15, cross plate; 16, cross bar; 17, roller; 18, reduction motor; 19, third bevel gear; 20, fourth bevel gear; 21, electromagnet; 22, ring; 23, fixed plate; 24, baffle; 25, punch; 26, spring; 27, pressure plate; 28, moving plate; 2 9. Casing; 30. Nylon strip; 31. Spline gauge; 32. Spline shaft; 33. Disc; 34. Protrusion; 35. Guide rod; 36. Fixed knife group; 37. Brake plate; 38. Second roller; 39. Mounting frame; 40. First roller; 41. Grid frame; 42. Punching hole; 43. Guide sleeve; 44. Tension spring; 45. Guide column; 46. Permanent magnet; 47. First chain; 48. First sprocket; 49. Second chain; 50. Spur gear; 51. Driving sprocket; 52. Second sprocket; 53. Crushing roller; 54. Third sprocket. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example 1: Refer to the attached Figure 1-14 A confidential document destruction device for economic management, comprising a shell 3, a protective cover 2 and a shell 1, the upper end of the protective cover 2 is provided with a mounting port, the upper end of the shell 1 is sleeved in the mounting port, the lower end of the shell 1 is fixedly connected to the lower edge of the protective cover 2 by bolts, the upper end of the shell 3 is provided with a rectangular port, a boss is provided at the rectangular port, the upper end of the protective cover 2 is provided with a connecting portion, the connecting portion is fixed on the boss, one end of the shell 3 is provided with a discharge port, and a receiving box 5 is provided in the discharge port;

[0043] The upper end of the shell 1 is provided with a feed port, and a feed hopper 4 is fixedly connected to the feed port. A crushing mechanism is installed in the shell 1, and the crushing mechanism consists of a fixed plate 23, a movable plate 28 and a pressing plate 27. Baffles 24 are provided on opposite sides of the pressing plate 27. The two baffles 24 are fixedly connected to one side of the fixed plate 23. The pressing plate 27, the fixed plate 23 and the two side plates 13 form a crushing chamber of a rectangular structure. A notch is provided at the lower end of the pressing plate 27, and a mounting frame 39 is sleeved in the notch. A first roller 40 is rotatably connected in the mounting frame 39. The cross plate 15 The upper end of the mounting frame 39 is fixedly connected with an electromagnet 21, one side of the mounting frame 39 is fixedly connected with a permanent magnet 46 and two guide pillars 45, the side walls of the two guide pillars 45 are sleeved with guide sleeves 43, the guide sleeve 43 is fixed to the upper end of the horizontal plate 15, one side of the guide sleeve 43 is fixedly connected with a tension spring 44, one end of the tension spring 44 is fixedly connected to one side of the mounting frame 39, the lower end of the fixed plate 23 is provided with a right angle opening, the right angle opening is rotatably connected with a second roller 38, and the crushing mechanism forms a plurality of holes on the surface of the paper and cuts out a plurality of fragments by extrusion;

[0044] The lower end of the housing 1 is provided with an opening, and a transverse plate 15 is fixedly connected to the opening. The upper end of the transverse plate 15 is provided with a fragment discharge port and a whole sheet discharge port. Two side plates 13 are fixedly connected to the whole sheet discharge port. Two end covers are fixedly connected between the two side plates 13 and a shredding mechanism is provided. The shredding mechanism tears the shredded paper into irregular paper scraps and can roll the shredded paper to reduce the volume of the paper scraps.

[0045] When the present invention is in use, a paper document (usually A4 size) is fed into the crushing chamber, and the paper passes through the whole sheet discharge port and falls into the shredding mechanism, and then the crushing mechanism is started to work. The crushing mechanism forms multiple holes on the surface of the paper by squeezing and cuts out multiple fragments. At this time, multiple holes with missing information can be formed on the paper, and the text information on the paper can be fragmented first. When multiple small fragments are mixed, the difficulty of splicing and integration is greatly increased. After the punching 42 is completed, the crushing mechanism is stopped and reset, and then the electromagnet 21 is started first to generate the same magnetic pole as the permanent magnet 46. The magnetic repulsion force generated at this time pushes the mounting frame 39 to move the first roller 40. The first roller 40 moves and cooperates with the second roller 38 to squeeze the paper. At the same time, the shredding mechanism is started to tear the shredded paper into irregular paper scraps, so that the paper can be completely fragmented, and the text information on the shredded paper can be further physically destroyed, so that the text information on the paper is completely destroyed. At the same time, the shredded paper is rolled to reduce the volume of the paper scraps, which can improve the storage capacity of the equipment.

[0046] Embodiment 2: Based on embodiment 1, the difference is that;

[0047] See attached Figure 4-11The crushing mechanism includes a plurality of screw rods 6, which are symmetrically rotatably connected to the two sides of the shell 1 through the first bearing seat, a threaded sleeve 9 is sleeved on the rod wall of the screw rod 6, and two brake plates 37 are fixedly connected to one side of the threaded sleeve 9. A through hole is opened on the side wall of the shell 1, and the two brake plates 37 pass through the through hole and are located on both sides of the movable plate 28. The side wall of the movable plate 28 is sleeved with two guide rods 35 through the guide hole, and the two guide rods 35 are fixed between the two brake plates 37. The side wall of the movable plate 28 is fixedly connected with a plurality of punching rods 25 distributed in a rectangular array, the fixed plate 23 is fixed in the shell 1 and is opened with a plurality of punching holes 42 matched with the punching rods 25, and the pressing plate 27 is arranged between the fixed plate 23 and the movable plate 28 and is sleeved on the punching rod 25 through a plurality of through holes;

[0048] A reduction motor 18 is fixedly connected to one side of the housing 1, and the output end of the reduction motor 18 is fixedly connected to two output shafts. The shaft walls of the two output shafts are fixedly connected with first bevel gears 10, and one side of the first bevel gear 10 is meshed with a second bevel gear 11. The center of the second bevel gear 11 is fixedly connected with a rotating shaft 12, and both ends of the rotating shaft 12 are fixedly connected with worms 7. The two worms 7 and the rotating shaft 12 are rotatably connected to one side of the housing 1 through a second bearing seat. A worm wheel 8 is meshed with one side of the worm 7, and the worm wheel 8 is coaxially fixedly connected to one end of the lead screw 6. A grid-shaped groove is provided on one side of the fixing plate 23, and the groove is connected to the punching hole 42. A grid frame 41 is fixedly connected in the groove, and one side of the grid frame 41 is located in the punching hole 42 and forms a cross-shaped cutting portion, and one end of the punch rod 25 is provided with a cross-shaped incision matching the herringbone cutting portion.

[0049] The side wall of the housing 1 is rotatably connected to two spline gauges 31 through rolling bearings, one end of the two spline gauges 31 is fixedly connected to the third bevel gear 19, one side of the third bevel gear 19 is meshed with a fourth bevel gear 20, and the fourth bevel gear 20 is fixed to the output shaft, one end of the spline gauge 31 extends into the housing 1 and is sleeved with a spline shaft 32, and a fixed frame is rotatably connected to the shaft wall of the spline shaft 32 through a rolling bearing, and the end of the fixed frame is fixed to the brake plate 37, and two discs 33 are provided on one side of the fixed frame, and protrusions 34 are provided on the opposite sides of the two discs 33, and one of the discs 33 is fixed to the movable plate 2 8, another disc 33 is coaxially fixed to one end of the spline shaft 32, the four corners of the movable plate 28 are fixedly connected with rings 22, one end of multiple rings 22 are fixedly connected with sleeves 29, a spring 26 is sleeved in the sleeve 29, one end of the spring 26 is fixedly connected to one side of the pressure plate 27, the other end of the spring 26 extends into the sleeve 29 and is fixedly connected to one side of the ring 22, a cross bar 16 is sleeved in the ring 22, the cross bar 16 passes through the spring 26 and is fixed to one side of the pressure plate 27, the side wall of the shell 1 is sleeved with an directional rod through a directional hole, and one end of the directional rod is fixedly connected to one end of the cross bar 16.

[0050] The crushing mechanism provided in the present invention, when in use, the reduction motor 18 works to drive the transmission shaft to rotate the first bevel gear 10, the rotation of the first bevel gear 10 drives the second bevel gear 11 to rotate the rotating shaft 12, the rotation of the rotating shaft 12 drives the worm 7 to rotate the worm wheel 8, the rotation of the worm wheel 8 drives the screw 6 to rotate the threaded sleeve 9, the rotation of the threaded sleeve 9 drives the brake plate 37 to force the movable plate 28, the movable plate 28 is forced to drive the punch rod 25 to move and penetrate into the punching hole 42 on the fixed plate 23, at this time, the punch rod 25 and the punching hole 42 can be used to punch a circular hole on the paper and form a disc, the disc is further pushed by the punch rod 25 to contact the grid frame 41, the grid frame 41 uses a cross-shaped incision to crush the disc, so that the disc is further broken into four fan-shaped structure fragments;

[0051] During the punching process 42, the moving plate 28 first drives the ring 22 to make the spring 26 push the pressing plate 27 to move. When the pressing plate 27 moves, the volume of the crushing chamber is reduced so that the paper is pressed tightly. When the punch rod 25 is reset by the elastic expansion and contraction of the spring 26, the paper stuck on the punch rod 25 is pushed out by the pressing plate 27.

[0052] When punching the hole 42, the output shaft of the reduction motor 18 drives the fourth bevel gear 20 to rotate the third bevel gear 19, and the rotation of the third bevel gear 19 drives the third bevel gear 19 to rotate, which drives the spline gauge 31 to rotate the spline shaft 32. When the spline shaft 32 rotates, it drives one of the disks 33 to rotate. When the disk 33 rotates, the protrusion 34 is used to create a gap between the two disks 33, so that a certain impact force can be exerted when punching the hole 42, so that the impact force of the punch rod 25 is increased when processing multiple documents.

[0053] Embodiment 3: Based on embodiment 1, the difference is that;

[0054] See attached Figure 11-14The shredding mechanism includes a crushing roller 53, the central axis of which is rotatably connected to the two end covers through a needle bearing, one side of one side plate 13 is fixedly connected to a fixed knife group 36, the blade of the fixed knife group 36 matches the crushing teeth of the crushing roller 53, the upper end of the fixed knife group 36 is fixedly connected to an inclined portion, the upper end of the inclined portion is flush with the upper end of the horizontal plate 15, one side of the other side plate 13 is provided with a shielding portion, one side of the shielding portion is provided with an arc surface matching the crushing roller 53, and one side of the side plate 13 is fixedly connected to a drive motor 1 4. The output end of the driving motor 14 is fixedly connected with a driving sprocket 51, one end of the central axis of the crushing roller 53 passes through a needle bearing and is fixedly connected with a first sprocket 48, a first chain 47 is wound between the first sprocket 48 and the second sprocket 52, a driving shaft is rotatably connected between the two end covers through a roller bearing, the driving shaft is located below the crushing roller 53 and a plurality of nylon strips 30 are fixedly connected to the shaft wall, one end of the driving shaft passes through a roller bearing and is fixedly connected with a second sprocket 52, and the second sprocket 52 is wound with the first chain 47.

[0055] A pair of rollers 17 are rotatably connected between the two end covers via ball bearings, one end of the support shafts of the two pairs of rollers 17 passes through the ball bearings and is fixedly connected to a spur gear 50, the two spur gears 50 are meshed, a third sprocket 54 is fixedly connected to the shaft wall of one of the support shafts, a second chain 49 is commonly wound around the driving sprocket 51 and the third sprocket 54, guide blocks are fixedly connected to the opposite sides of the two side plates 13, an arc groove matching the side wall of the pair of rollers 17 is provided on the opposite sides of the two guide blocks, and an inclined surface is provided on the upper end of the guide block.

[0056] The shredding mechanism provided in the present invention, when in use, starts the driving motor 14 to rotate the driving sprocket 51, the driving sprocket 51 rotates to drive the first chain 47 to rotate the first sprocket 48, the first sprocket 48 rotates to drive the crushing roller 53 to rotate, the crushing roller 53 rotates to drive the rolling teeth to tear the paper first, the torn paper is taken away by the rolling teeth and contacts the fixed knife group 36 to be further broken, and the rolling teeth and the fixed knife group 36 can destroy the text on the paper by friction when they bite each other, that is, the paper is stretched and deformed by friction and finally torn, so that the toner showing the text at the torn place falls off, and even is squeezed and stretched into a black mass, so that even if the paper is spliced At the same time, the first chain 47 drives the second sprocket 52 to rotate the driving shaft. When the driving shaft rotates, the nylon strip 30 is used to scrape off the paper pieces adhering to the rolling teeth to prevent the paper pieces from being mixed in the rolling teeth and affecting the next step of paper crushing. At the same time, the active gear drives the second chain 49 to rotate the third sprocket 54. The rotation of the third sprocket 54 drives the supporting shaft to rotate the pair of rollers 17, and the spur gear 50 is used to rotate the pair of rollers 17. At this time, the paper pieces fall on the pair of rollers 17, are squeezed and transported, and finally fall into the receiving box 5, so that the paper can be shredded and the shredded paper can be rolled, thereby reducing the volume of shredded paper and facilitating collection.

[0057] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A confidential document destruction device for economic management, comprising a housing (3), a protective cover (2) and a casing (1), characterized in that: The upper end of the protective cover (2) is provided with a mounting opening, the upper end of the shell (1) is sleeved in the mounting opening, and the lower end of the shell (1) is fixedly connected to the lower edge of the protective cover (2) by bolts; The upper end of the shell (1) is provided with a feed port, to which a feed hopper (4) is fixedly connected, and a crushing mechanism is installed in the shell (1), the crushing mechanism comprising a fixed plate (23), a movable plate (28) and a pressing plate (27), and the crushing mechanism forms a plurality of holes on the surface of the paper and cuts out a plurality of fragments by extrusion; The lower end of the shell (1) is provided with an opening, and a transverse plate (15) is fixedly connected to the opening; the upper end of the transverse plate (15) is provided with a fragment discharge port and a whole sheet discharge port; the whole sheet discharge port is fixedly connected to two side plates (13); two end covers are fixedly connected between the two side plates (13) and a shredding mechanism is provided; the shredding mechanism tears the shredded paper into irregular paper scraps, and can roll the shredded paper scraps to reduce the volume of the paper scraps; The upper end of the shell (3) is provided with a rectangular opening, a boss is provided at the rectangular opening, the upper end of the protective cover (2) is provided with a connecting portion, the connecting portion is fixed on the boss, and one end of the shell (3) is provided with a discharge port, a receiving box (5) is provided in the discharge port.

2. The device for destroying confidential documents for economic management according to claim 1, characterized in that: The crushing mechanism comprises a plurality of screw rods (6), the plurality of screw rods (6) are symmetrically rotatably connected to the two sides of the housing (1) through a first bearing seat, a threaded sleeve (9) is sleeved on the rod wall of the screw rod (6), one side of the threaded sleeve (9) is fixedly connected to two brake plates (37), a through hole is opened on the side wall of the housing (1), the two brake plates (37) pass through the through hole and are located on the two sides of the movable plate (28), and the side wall of the movable plate (28) is connected through a guide hole Two guide rods (35) are sleeved, the two guide rods (35) are fixed between two brake plates (37), a plurality of punching rods (25) distributed in a rectangular array are fixedly connected to the side wall of the movable plate (28), the fixed plate (23) is fixed in the housing (1) and is provided with a plurality of punching holes (42) matching with the punching rods (25), the pressing plate (27) is arranged between the fixed plate (23) and the movable plate (28) and sleeved on the punching rods (25) through a plurality of perforations; A reduction motor (18) is fixedly connected to one side of the housing (1), and two output shafts are fixedly connected to the output end of the reduction motor (18), and first bevel gears (10) are fixedly connected to the shaft walls of the two output shafts, and a second bevel gear (11) is meshed on one side of the first bevel gear (10), and a rotating shaft (12) is fixedly connected at the center of the second bevel gear (11), and a worm (7) is fixedly connected to both ends of the rotating shaft (12), and the two worms (7) and the rotating shaft (12) are rotatably connected to one side of the housing (1) via a second bearing seat, and a worm wheel (8) is meshed on one side of the worm (7), and the worm wheel (8) is coaxially fixedly connected to one end of the lead screw (6).

3. The confidential document destruction device for economic management according to claim 2, characterized in that: A grid-shaped groove is provided on one side of the fixing plate (23), and the groove is communicated with the punching hole (42). A grid frame (41) is fixedly connected in the groove. One side of the grid frame (41) is located in the punching hole (42) and forms a cross-shaped cutting portion. One end of the punch rod (25) is provided with a cross-shaped cutout that matches the cross-shaped cutting portion.

4. The device for destroying confidential documents for economic management according to claim 2, characterized in that: The side wall of the housing (1) is rotatably connected to two spline gauges (31) via rolling bearings, one end of the two spline gauges (31) is fixedly connected to a third bevel gear (19), one side of the third bevel gear (19) is meshed with a fourth bevel gear (20), the fourth bevel gear (20) is fixed on the output shaft, one end of the spline gauge (31) extends into the housing (1) and is sleeved with a spline shaft (32), a fixing frame is rotatably connected to the shaft wall of the spline shaft (32) via rolling bearings, the end of the fixing frame is fixed to a brake plate (37), one side of the fixing frame is provided with two discs (33), opposite sides of the two discs (33) are provided with protrusions (34), one of the discs (33) is fixed to one side of the moving plate (28), and the other disc (33) is coaxially fixed to one end of the spline shaft (32).

5. The device for destroying confidential documents for economic management according to claim 1, characterized in that: The four corners of the movable plate (28) are fixedly connected with circular rings (22), one end of each of the circular rings (22) is fixedly connected with a sleeve (29), a spring (26) is sleeved in the sleeve (29), one end of the spring (26) is fixedly connected to one side of the pressure plate (27), the other end of the spring (26) extends into the sleeve (29) and is fixedly connected to one side of the circular ring (22), a cross bar (16) is sleeved in the circular ring (22), the cross bar (16) passes through the spring (26) and is fixed to one side of the pressure plate (27), and a directional rod is sleeved on the side wall of the shell (1) through a directional hole, and one end of the directional rod is fixedly connected to one end of the cross bar (16).

6. The device for destroying confidential documents for economic management according to claim 1, characterized in that: The lower end of the pressure plate (27) is provided with a notch, a mounting frame (39) is sleeved in the notch, a first roller (40) is rotatably connected in the mounting frame (39), an electromagnet (21) is fixedly connected to the upper end of the transverse plate (15), a permanent magnet (46) and two guide columns (45) are fixedly connected to one side of the mounting frame (39), the side walls of the two guide columns (45) are sleeved with guide sleeves (43), the guide sleeve (43) is fixed to the upper end of the transverse plate (15), a tension spring (44) is fixedly connected to one side of the guide sleeve (43), one end of the tension spring (44) is fixedly connected to one side of the mounting frame (39), a right-angle opening is provided at the lower end of the fixed plate (23), a second roller (38) is rotatably connected in the right-angle opening.

7. The device for destroying confidential documents for economic management according to claim 1, characterized in that: The shredding mechanism comprises a crushing roller (53), the central axis of which is rotatably connected to two end covers via a needle bearing, one side of one of the side plates (13) is fixedly connected to a fixed knife group (36), the blade of which matches with the crushing teeth of the crushing roller (53), the upper end of which is fixedly connected to an inclined portion, the upper end of which is flush with the upper end of the transverse plate (15), one side of the other side plate (13) is provided with a shielding portion, one side of which is provided with an arc surface matching with the crushing roller (53), one side of the side plate (13) is fixedly connected to a driving motor (14), the output end of which is fixedly connected to a driving sprocket (51), one end of the central axis of the crushing roller (53) passes through the needle bearing and is fixedly connected to a first sprocket (48), and a first chain (47) is wound around the first sprocket (48) and the second sprocket (52).

8. The confidential document destruction device for economic management according to claim 7, characterized in that: A drive shaft is rotatably connected between the two end covers via a roller bearing. The drive shaft is located below the crushing roller (53) and has a plurality of nylon strips (30) fixedly connected to the shaft wall. One end of the drive shaft passes through the roller bearing and is fixedly connected to a second sprocket (52). The second sprocket (52) is wound around the first chain (47).

9. The device for destroying confidential documents for economic management according to claim 7, characterized in that: A pair of rollers (17) are rotatably connected between the two end covers via ball bearings, one end of the support shafts of the two pairs of rollers (17) passes through the ball bearings and is fixedly connected to a spur gear (50), the two spur gears (50) are meshed, a third sprocket (54) is fixedly connected to the shaft wall of one of the support shafts, a second chain (49) is commonly wound between the driving sprocket (51) and the third sprocket (54), a guide block is fixedly connected to the opposite side of the two side plates (13), an arc groove matching the side wall of the pair of rollers (17) is provided on the opposite side of the two guide blocks, and an inclined surface is provided on the upper end of the guide block.

10. The confidential document destruction device for economic management according to claim 1, characterized in that: Baffles (24) are provided on opposite sides of the pressing plate (27), and the two baffles (24) are fixedly connected to one side of the fixed plate (23). The pressing plate (27), the fixed plate (23) and the two side plates (13) form a crushing chamber with a rectangular structure.

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