Punching device for business administration file arrangement

Abstract

The invention provides a perforating device for business administration file arrangement, and relates to the technical field of perforating devices.The perforating device comprises a bottom box, a top frame is fixed to the top of the bottom box, a top plate is slidably mounted at the top of the top frame, a plurality of perforating heads are arranged at the lower end of the top plate at equal intervals, and upper end limiting assemblies are arranged on the portions, located on the two sides of the top plate, of the top frame; the upper end limiting assembly comprises a sliding frame, the sliding frame is slidably connected to the top of the top frame in a sleeving mode, and an upper side plate is arranged at the bottom of the sliding frame. Files at the upper end of the paper at the position are lifted through the upper side plate, the weight of the upper end of the paper at the position is reduced, moving is convenient, the push plate on the lower side plate pushes the files to be flush with other paper, and therefore the stacked files can be conveniently punched in a unified mode, consistency of punching positions is kept, and follow-up binding and storage are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of punching devices, in particular to a punching device for sorting industrial and commercial management documents. Background Art

[0002] In the daily work of business administration, a large amount of enterprise information needs to be sorted and bound. In the process of binding documents, the documents need to be punched. However, when using the existing document punching device, the punching position on the surface of the document needs to be flattened by hand, and the position and number of punching holes are selected according to needs. However, when the document is thick, the document paper will be messy during the punching process, making the paper holes uneven, affecting the neatness of the punching.

[0003] In the prior art, in order to prevent the stacked paper documents from being neat, a mechanical structure is usually used to squeeze and limit the stacked documents, so that they remain aligned during the punching process to avoid the punching position from shifting. However, in this process, a single paper may not be aligned during the stacking process, and the difference between the upper and lower parts is large, and the edge exceeds the edge of the whole. In this case, it is difficult to directly adjust it to a state flush with the whole by relying on the limiting mechanism of the prior art. When manually adjusted, the weight of the upper end of the paper exceeding the edge after stacking cannot be affected and it cannot be moved cleanly, which can easily cause the paper at this position to be punched in the wrong position. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a punching device for sorting industrial and commercial management documents to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. The upper side plate, the lower plate and the two-way telescopic plate are used to limit the sides and the front and back of the stacked documents. When there is paper exceeding the overall edge, the upper side plate is used to lift the document at the upper end of the paper at that position to reduce the weight of the upper end of the paper at that position for easy movement. The push plate on the lower side plate pushes it to be flush with other papers, thereby facilitating unified punching of the stacked documents, maintaining the consistency of the punching positions, and facilitating subsequent binding and storage.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a punching device for sorting industrial and commercial management documents comprises a bottom box, a top frame is fixed on the top of the bottom box, and a top plate is slidably installed on the top of the top frame, and a plurality of punching heads are equidistantly arranged at the lower end of the top plate, the top frame is provided with upper end limit components on both sides of the top plate, and the upper end limit component comprises a slide, the slide is slidably sleeved on the top of the top frame, and an upper side plate is arranged at the bottom of the slide, and two groups of two-way telescopic plates are installed between the two groups of the upper side plates, a lower end limit component is arranged at a position opposite to the upper end limit component inside the bottom box, the lower end limit component comprises a lower side plate, two groups of lower side plates are arranged at the bottom of the bottom box corresponding to the upper side plate, and a telescopic bottom frame is fixed to the bottom of the lower side plate, a notch is opened on the side of the bottom box, and the telescopic bottom frame slides through the notch, a plug plate is slidably inserted at the bottom of the upper side plate, and a cross plate is fixed on the top of the lower side plate at both sides of the plug plate, and the cross plate extends a distance out of the outside of the lower side plate.

[0006] Furthermore, two groups of cylinders are fixed on the top of the top plate, and a mounting plate is fixed on the extended end of the cylinder through the top plate, and the punching head is fixed on the bottom of the mounting plate by bolts.

[0007] Furthermore, the upper end limit assembly also includes a sliding frame, a sliding frame is fixed at the bottom of the sliding frame, and a mounting block is slidably connected inside the sliding frame, a first electric push rod is fixed to the outer surface of the mounting block, and a fixing plate is fixed to the extended end of the first electric push rod, the other end of the fixing plate is fixed to the outer surface of the upper side plate, and a first spring is fixed between the top inner wall of the sliding frame and the mounting block.

[0008] Furthermore, the lower end limiting assembly also includes a third electric push rod, and the third electric push rod is fixed on the outer wall of the bottom box located at the top of the notch, and the extended end of the third electric push rod is fixedly connected to the surface of the telescopic base frame passing through the notch.

[0009] Furthermore, movable grooves are provided on the inner walls on both sides of the top of the bottom box, and bidirectional screws are rotatably installed inside the movable grooves through bearings, a motor is fixed at the position of the bidirectional screw at the outer end of the bottom box corresponding to the position of the bidirectional screw, and the output end of the motor is fixedly connected to the bidirectional screw, and a guide block is threadedly sleeved on the surface of the bidirectional screw, and both sides of the lower side plate slide along the outer surface of the guide block.

[0010] Furthermore, a sliding groove is provided on the surface of the horizontal plate, and the outermost end of the sliding groove is slidably connected to a push plate, a telescopic rod is fixed to the back of the push plate, and the other end of the telescopic rod is fixedly connected to the outer end of the horizontal plate, and a plurality of second springs are fixed to the back of the push plate, and the other end of the second spring is fixed to the outer end of the horizontal plate.

[0011] Furthermore, a fourth electric push rod is fixed to one side of the lower side plate located at the bottom of the horizontal plate, and a pull rope is fixed to the extended end of the fourth electric push rod, and the other end of the pull rope is fixedly connected to the push plate side plate.

[0012] Furthermore, a contact plate is fixed to the outer side of the bottom of the upper side plate at a position corresponding to the fourth electric push rod, and the extended end of the fourth electric push rod is in compression contact with the contact plate.

[0013] Furthermore, a telescopic plate is fixed to the outer side of the lower side plate, and the extended end of the telescopic plate is fixed to the outer surface of the upper side plate.

[0014] Furthermore, sockets are equidistantly provided on both sides of the upper end of the bottom box, and the inside of the sockets can be slidably inserted into the support plate.

[0015] Beneficial effects of the present invention:

[0016] 1. When adjusting the spacing between the lower side plates, the present invention pulls all the support plates outward, and after the spacing between the lower side plates is adjusted, inserts the support plates into the middle area between the two lower side plates as supporting stacked files, so as to facilitate freely adjusting the insertion quantity of the lower end support platform according to the spacing between the lower side plates and the upper side plates.

[0017] 2. The present invention squeezes the contact plate of the upper side plate through the extended end of the fourth electric push rod to push it upward, and the mounting block slides upward along the slide frame to compress the first spring. When the plug plate is inserted into the bottom two sides of the documents stacked on the upper end of the misaligned paper, the documents stacked thereon will be lifted to a certain height as the upper side plate moves, thereby reducing the weight of the upper end of the paper. At the same time, the extended end of the fourth electric push rod rises, and the pull rope no longer restricts the push plate. Under the elastic force and guiding action of the second spring and the telescopic rod, the push plate slides along the slide groove on the horizontal plate, pushing the part of the paper that exceeds the overall edge inward to align it with the lower half.

[0018] 3. The present invention drives the bidirectional screw to rotate through a motor, and the guide block cooperates with the bidirectional screw thread to slide along the moving groove. The two lower side plates move synchronously in opposite directions to adjust the accommodating area according to the lengths of both sides of the stacked files. The telescopic plate on the back of the lower side plate is connected to the upper side plate. When the lower side plate moves, the upper side plate moves synchronously horizontally to maintain the same vertical line as the lower side plate.

[0019] 4. The present invention drives the inserting plate to be inserted into the bottom of the upper half of the paper through the second electric push rod, which can drive it to lift up and reduce the weight of the upper end of the paper beyond the edge, thereby facilitating its correction. The two-way telescopic plate between the two upper side plates is installed by magnetic adsorption. The two extended ends of the two-way telescopic plate have a magnet layer, which can be adsorbed on the inner wall of the upper side plate, and the position can be adjusted according to the front and rear position of the document.

[0020] 5. The punching head at the bottom of the mounting plate of the present invention can be freely installed according to the needs of the punching position and quantity. The mounting plate is driven to move up and down by the cylinder, and the punching head punches holes in the stacked documents.

[0021] 6. Compared with the prior art, the present invention limits the sides and front and back of the stacked documents through the upper side plate, the lower plate and the bidirectional telescopic plate. When there is paper that exceeds the overall edge, the upper side plate is used to lift the document at the upper end of the paper at that position, thereby reducing the weight of the upper end of the paper at that position and facilitating movement. The push plate on the lower side plate pushes it to be flush with other papers, thereby facilitating unified punching of the stacked documents, maintaining consistency in the punching positions, and facilitating subsequent binding and storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a punching device for arranging business administration documents according to the present invention;

[0023] Figure 2 This is a schematic diagram of the side structure of a bottom box of a punching device for arranging industrial and commercial management documents according to the present invention;

[0024] Figure 3 It is a schematic diagram of the connection between the upper end limit assembly and the top frame of a punching device for sorting industrial and commercial management documents of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the upper end limit assembly of a punching device for arranging industrial and commercial management documents of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the lower end limit assembly of a punching device for arranging industrial and commercial management documents according to the present invention;

[0027] Figure 6 This is a schematic diagram of the inner wall structure of a bottom box of a punching device for arranging industrial and commercial management documents according to the present invention;

[0028] Figure 7 The present invention is a schematic diagram of the surface structure of a horizontal plate of a punching device for arranging industrial and commercial management documents.

[0029] In the figure: 1, bottom box; 11, top frame; 12, top plate; 13, cylinder; 14, socket; 15, mounting plate; 16, punching head; 2, upper end limit assembly; 21, upper side plate; 22, slide; 23, slide frame; 24, mounting block; 25, first electric push rod; 26, plug plate; 27, fixed plate; 28, second electric push rod; 29, contact plate; 210, two-way telescopic plate; 211, first spring; 3, lower end limit assembly; 31, third electric push rod; 32, telescopic bottom frame; 33, lower side plate; 34, fourth electric push rod; 35, motor; 36, two-way screw; 37, moving groove; 38, guide block; 39, cross plate; 310, slide; 311, push plate; 312, second spring; 313, telescopic rod; 314, pull rope; 4, support plate; 5, telescopic plate. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] See also Figures 1 to 7 The present invention provides a technical solution: a punching device for sorting business administration documents, comprising a bottom box 1, a top frame 11 is fixed on the top of the bottom box 1, and a top plate 12 is slidably installed on the top of the top frame 11, and a plurality of punching heads 16 are equidistantly arranged at the lower end of the top plate 12, the top frame 11 is provided with upper end limit components 2 on both sides of the top plate 12, and the upper end limit components 2 include a slide 22, the slide 22 is slidably sleeved on the top of the top frame 11, and an upper side plate 21 is provided at the bottom of the slide 22, two groups of bidirectional telescopic plates 210 are installed between the two groups of the upper side plates 21, a lower end limit component 3 is provided at a position opposite to the upper end limit component 2 inside the bottom box 1, and the lower end limit component 3 includes a lower side plate 33, the bottom box 1 corresponds to the upper side plate 2 Two groups of lower side panels 33 are provided at the bottom of 1, and a telescopic bottom frame 32 is fixed to the bottom of the lower side panels 33. A notch is opened on the side of the bottom box 1, and the telescopic bottom frame 32 slides through the notch. The bottom of the upper side panel 21 is slidably plugged with a plug plate 26, and the top of the lower side panel 33 is fixed with a cross plate 39 on both sides of the plug plate 26, and the cross plate 39 extends a distance outside the lower side panel 33. When using the device, the documents are stacked and placed at the upper end of the bottom box 1, and the upper end limit component 2 and the lower end limit component 3 adjust the limit area according to the width and length of the paper (here it is required to try to meet the same size of all stacked papers), wrap and straighten the four sides of the paper, and punch holes in the paper in the wrapping area through the punching head 16 to avoid the problem of misaligned punching.

[0032] In this embodiment, two groups of cylinders 13 are fixed on the top of the top plate 12, and the extended end of the cylinder 13 passes through the top plate 12 to fix a mounting plate 15. The punching head 16 is fixed to the bottom of the mounting plate 15 by bolts. The punching head 16 at the bottom of the mounting plate 15 can be freely installed according to the needs of the punching position and number. The mounting plate 15 is driven to rise and fall by the cylinder 13, and the punching head 16 punches the stacked documents.

[0033] In this embodiment, the upper end limit assembly 2 also includes a slide frame 23, the slide frame 23 is fixed at the bottom of the slide frame 22, and the slide frame 23 is slidably connected to the inner surface of the mounting block 24, a first electric push rod 25 is fixed to the outer surface of the mounting block 24, and a fixing plate 27 is fixed to the extended end of the first electric push rod 25, and the other end of the fixing plate 27 is fixed to the outer surface of the upper side plate 21, and a first spring 211 is fixed between the top inner wall of the slide frame 23 and the mounting block 24, and the upper side plate 21 is driven by the first electric push rod 25 to move in the vertical direction to flatten the sides of the stacked documents. In simple terms, the stacked documents are placed inside the lower side plate 33 and the upper side plate 21, and their edges are in contact with the inner walls of the upper side plate 21 and the lower side plate 33. When a paper exceeds the edge, it needs to be adjusted. When the lower side plate 33 encounters a paper exceeding the upper side plate 21 and the lower side plate 33 during vertical movement, the upper side plate 21 moves to contact the paper The top of the document is contacted, and the lower side plate 33 is controlled to move to the bottom of the paper. The second electric push rod 28 drives the inserting plate 26 to insert into the bottom of the document in the upper half of the paper, which can drive it to lift up and reduce the weight of the upper end of the paper that exceeds the edge, thereby facilitating its correction. The two-way telescopic plate 210 between the two upper side plates 21 is magnetically adsorbed and installed. The two extended ends of the two-way telescopic plate 210 have a magnet layer, which can be adsorbed on the inner wall of the upper side plate 21, and the position can be adjusted according to the front and rear positions of the documents. In specific operations, the front and rear ends of the documents are first stacked and leveled, and then placed in the lower end limit assembly 3. The positions of the side plates and the two-way telescopic plates 210 are adjusted according to the width and length of the documents to limit and clamp them to ensure stability during punching. After the correction of the paper exceeding the edge is completed, the lower side plate 33 and the upper side plate 21 are lowered at the same time until the upper side plate 21 completely wraps the stacked paper, and the paper is limited and punched.

[0034] In this embodiment, the lower end limit assembly 3 also includes a third electric push rod 31, the third electric push rod 31 is fixed on the outer wall of the bottom box 1 located at the top of the notch, and the extended end of the third electric push rod 31 is fixedly connected to the surface of the telescopic bottom frame 32 passing through the notch, the inner walls on both sides of the top of the bottom box 1 are provided with movable grooves 37, and a bidirectional screw 36 is rotatably installed inside the movable groove 37 through a bearing, a motor 35 is fixed at the position of the outer end of the bottom box 1 corresponding to the bidirectional screw 36, and the output end of the motor 35 is fixedly connected to the bidirectional screw 36, and a guide block 38 is threadedly sleeved on the surface of the bidirectional screw 36, and the two sides of the lower side plate 33 slide along the outer surface of the guide block 38, and the outer side of the lower side plate 33 is fixed with a telescopic plate 5, and the extended end of the telescopic plate 5 is fixed to the outer surface of the upper side plate 21, and the third electric push rod 31 is opened. The push rod 31 can drive the telescopic base frame 32 to slide along the notch of the bottom box 1, thereby driving the lower side plate 33 to move up and down. The movement of the lower side plate 33 is limited and guided by the guide blocks 38 on both sides. The telescopic base frame 32 is a telescopic connecting plate structure. When adjusting the spacing of the lower side plates 33, the connection between the lower side plates 33 and the third electric push rod 31 can be maintained. The motor 35 is turned on to drive the bidirectional screw 36 to rotate. The guide blocks 38 and the bidirectional screw 36 are threadedly matched to slide along the moving groove 37. The synchronous and reverse movement of the two lower side plates 33 can adjust the accommodating area according to the length of the stacked documents on both sides. The telescopic plate 5 on the back of the lower side plate 33 is connected to the upper side plate 21. When the lower side plate 33 moves, the upper side plate 21 moves horizontally synchronously to maintain the same vertical line as the lower side plate 33, specifically by sliding the slide 22 along the top frame 11.

[0035] In this embodiment, a slide groove 310 is provided on the surface of the horizontal plate 39, and a push plate 311 is slidably connected to the outermost end of the slide groove 310, a telescopic rod 313 is fixed to the back of the push plate 311, and the other end of the telescopic rod 313 is fixedly connected to the outer end of the horizontal plate 39, a plurality of second springs 312 are fixed to the back of the push plate 311, and the other end of the second spring 312 is fixed to the outer end of the horizontal plate 39, and a fourth electric push rod 34 is fixed to one side of the lower side plate 33 located at the bottom of the horizontal plate 39, and A pull rope 314 is fixed to the extended end of the fourth electric push rod 34, and the other end of the pull rope 314 is fixedly connected to the side plate of the push plate 311. A contact plate 29 is fixed to the outer side of the bottom of the upper side plate 21 corresponding to the position of the fourth electric push rod 34, and the extended end of the fourth electric push rod 34 is pressed and contacted with the contact plate 29. The push plate 311 is initially located at the outermost end of the transverse plate 39, and the transverse plate 39 is flush with the top of the upper side plate 21. When the lower side plate 33 moves to the bottom of the paper beyond the overall edge, this When the bottom of the paper contacts the cross plate 39, the upper side plate 21 is located at the upper end of the paper, the fourth electric push rod 34 is opened, and the extended end of the fourth electric push rod 34 presses the contact plate 29 of the upper side plate 21 to push it upward, and the mounting block 24 slides upward along the slide frame 23 to compress the first spring 211. When the insert plate 26 is inserted into the bottom sides of the stacked files at the upper end of the misaligned paper, the files stacked on it will be lifted to a certain height as the upper side plate 21 moves, reducing the weight of the upper end of the paper, and at the same time, the fourth electric push rod 34 is opened. When the extended end of the electric push rod 34 rises, the pull rope 314 no longer restricts the push plate 311, and under the elastic force and guiding action of the second spring 312 and the telescopic rod 313, the push plate 311 slides along the slide groove 310 on the horizontal plate 39, pushing the part of the paper that exceeds the overall edge inward and aligning it with the lower half. Subsequently, when the extended end of the fourth electric push rod 34 is retracted, the push plate 311 can be moved to the outside by the pull rope 314, and the upper side plate 21 descends to cooperate with the upper side plate 21 to limit the two sides of the stacked documents.

[0036] In this embodiment, sockets 14 are equidistantly provided on both sides of the upper end of the bottom box 1, and a pallet 4 can be slidably inserted into the sockets 14, and a pallet 4 is pre-inserted into each socket 14. When adjusting the spacing of the lower side panels 33, all the pallets 4 are pulled outward. After the spacing of the lower side panels 33 is adjusted, a pallet 4 is inserted into the middle area between the two lower side panels 33 as a support for stacked files, so that the insertion quantity of the lower support platform can be freely adjusted according to the spacing between the lower side panels 33 and the upper side panels 21.

[0037] When the device is used, the documents are stacked and placed in the upper end of the bottom box 1. The third electric push rod 31 is turned on to drive the telescopic bottom frame 32 to slide along the notch of the bottom box 1, thereby driving the lower side plate 33 to move up and down. The movement of the lower side plate 33 is limited and guided by the guide blocks 38 on both sides. The telescopic bottom frame 32 is a telescopic connecting plate structure. When adjusting the spacing between the lower side plates 33, the connection between the lower side plates 33 and the third electric push rod 31 can be maintained. The motor 35 is turned on to drive the bidirectional screw 36 to rotate. The guide block 38 and the bidirectional screw 36 are threadedly matched to slide along the moving groove 37. The synchronous and reverse movement of the lower side panels 33 can adjust the storage area according to the length of both sides of the stacked documents. The telescopic plate 5 on the back of the lower side panels 33 is connected to the upper side panels 21. When the lower side panels 33 move, the upper side panels 21 move horizontally synchronously to maintain the same vertical line as the lower side panels 33. Specifically, the slide 22 slides along the top frame 11, and the upper side panels 21 are driven by the first electric push rod 25 to move in the vertical direction to level the sides of the stacked documents. When the lower side panels 33 encounter a paper that exceeds the upper side panels 21 and the lower side panels 33 during the vertical movement, the upper side panels 2 1 moves to contact the top of the paper, and controls the lower side plate 33 to move to the bottom of the paper. The second electric push rod 28 drives the inserting plate 26 to insert into the bottom of the file on the upper half of the paper, which can drive it to lift up, reduce the weight of the upper end of the paper beyond the edge, and turn on the fourth electric push rod 34. The extended end of the fourth electric push rod 34 presses the contact plate 29 of the upper side plate 21 to push it upward. The mounting block 24 slides upward along the sliding frame 23 to compress the first spring 211. When the inserting plate 26 is inserted into the bottom of the upper end of the misaligned paper and overlaps the two sides of the file, along with the upper The movement of the side plate 21 will lift the stacked documents to a certain height, reducing the weight of the upper end of the documents. At the same time, the extended end of the fourth electric push rod 34 rises, and the pull rope 314 no longer restricts the push plate 311. Under the elastic force and guiding action of the second spring 312 and the telescopic rod 313, the push plate 311 slides along the slide groove 310 on the cross plate 39, pushing the part of the documents that exceeds the overall edge inward and aligning it with the lower half. The cylinder 13 drives the mounting plate 15 to move up and down, and the punching head 16 punches holes in the stacked documents to avoid the problem of misaligned punching.

[0038] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A punching device for arranging business administration documents, comprising a bottom box (1), characterized in that: A top frame (11) is fixed on the top of the bottom box (1), and a top plate (12) is slidably mounted on the top of the top frame (11), and a plurality of punching heads (16) are equidistantly mounted on the lower end of the top plate (12), and an upper limit assembly (2) is provided on both sides of the top plate (12) of the top frame (11), and the upper limit assembly (2) includes a slide frame (22), the slide frame (22) is slidably sleeved on the top of the top frame (11), and an upper side plate (21) is provided at the bottom of the slide frame (22), and two groups of bidirectional telescopic plates (210) are installed between the two groups of the upper side plates (21), and the interior of the bottom box (1) is directly opposite to the upper limit assembly (2 ) is provided at the position of the lower end limit assembly (3), the lower end limit assembly (3) comprises a lower side plate (33), two groups of lower side plates (33) are provided inside the bottom box (1) corresponding to the bottom of the upper side plate (21), and a telescopic bottom frame (32) is fixed to the bottom of the lower side plate (33), a notch is opened on the side of the bottom box (1), and the telescopic bottom frame (32) slides through the notch, a plug-in plate (26) is slidably plugged at the bottom of the upper side plate (21), and a cross plate (39) is fixed to the top of the lower side plate (33) on both sides of the plug-in plate (26), and the cross plate (39) extends a distance outside the lower side plate (33).

2. A punching device for arranging business administration documents according to claim 1, characterized in that: Two groups of cylinders (13) are fixed on the top of the top plate (12), and the extended ends of the cylinders (13) pass through the top plate (12) and are fixed with a mounting plate (15), and the punching head (16) is fixed to the bottom of the mounting plate (15) by bolts.

3. A punching device for arranging business administration documents according to claim 1, characterized in that: The upper end limit assembly (2) also includes a slide frame (23), the slide frame (23) is fixed at the bottom of the slide frame (22), and a mounting block (24) is slidably connected inside the slide frame (23), a first electric push rod (25) is fixed to the outer surface of the mounting block (24), and a fixing plate (27) is fixed to the extended end of the first electric push rod (25), the other end of the fixing plate (27) is fixed to the outer surface of the upper side plate (21), and a first spring (211) is fixed between the top inner wall of the slide frame (23) and the mounting block (24).

4. A punching device for arranging business administration documents according to claim 1, characterized in that: The lower end limit assembly (3) further comprises a third electric push rod (31), the third electric push rod (31) being fixed on the outer wall of the bottom box (1) located at the top of the notch, and the extended end of the third electric push rod (31) is fixedly connected to the surface of the telescopic bottom frame (32) passing through the notch.

5. A punching device for arranging business administration documents according to claim 4, characterized in that: The inner walls of both sides of the top of the bottom box (1) are provided with movable grooves (37), and a bidirectional screw (36) is rotatably mounted inside the movable grooves (37) via bearings. A motor (35) is fixed at the outer end of the bottom box (1) at a position corresponding to the bidirectional screw (36), and the output end of the motor (35) is fixedly connected to the bidirectional screw (36). A guide block (38) is threadedly sleeved on the surface of the bidirectional screw (36), and both sides of the lower side plate (33) slide along the outer surface of the guide block (38).

6. A punching device for arranging business administration documents according to claim 5, characterized in that: A sliding groove (310) is provided on the surface of the horizontal plate (39), and the outermost end of the sliding groove (310) is slidably connected to a push plate (311), a telescopic rod (313) is fixed to the back of the push plate (311), and the other end of the telescopic rod (313) is fixedly connected to the outer end of the horizontal plate (39), and a plurality of second springs (312) are fixed to the back of the push plate (311), and the other end of the second spring (312) is fixed to the outer end of the horizontal plate (39).

7. A punching device for arranging business administration documents according to claim 6, characterized in that: A fourth electric push rod (34) is fixed to one side of the lower side plate (33) located at the bottom of the transverse plate (39), and a pull rope (314) is fixed to the extended end of the fourth electric push rod (34), and the other end of the pull rope (314) is fixedly connected to the side plate of the push plate (311).

8. A punching device for arranging business administration documents according to claim 7, characterized in that: A contact plate (29) is fixed to the outer side of the bottom of the upper side plate (21) at a position corresponding to the fourth electric push rod (34), and the extended end of the fourth electric push rod (34) is in compression contact with the contact plate (29).

9. The punching device for arranging business administration documents according to claim 1, characterized in that: A telescopic plate (5) is fixed on the outer side of the lower side plate (33), and the extended end of the telescopic plate (5) is fixed to the outer surface of the upper side plate (21).

10. The punching device for arranging business administration documents according to claim 1, characterized in that: Sockets (14) are equidistantly provided on both sides of the upper end of the bottom box (1), and the inside of the sockets (14) can be slidably inserted into the support plate (4).

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