A cutter head structure for paper shredding

Abstract

The application belongs to the technical field of equipment for crushing, and particularly relates to a cutter head structure for paper crushing. The cutter head structure comprises a lifting horizontal plate, a vertical base plate and a blade, further comprises a horizontal rod frame body unit arranged on the upper surface of the lifting horizontal plate and used for connecting a cylinder shaft, a threaded groove block body unit arranged on the horizontal rod frame body unit and used for connecting the cylinder shaft, a connecting nut unit arranged on the upper surface of the lifting horizontal plate and used for connecting the cylinder shaft, and a plug-in cover plate unit arranged on the upper surface of the lifting horizontal plate and engaged with the threaded groove block body unit and / or the connecting nut unit and used for blocking cutting debris.

Description

Technical Field

[0001] This application belongs to the technical field of shredding equipment, and particularly relates to a cutter head structure that can be used for shredding paper. Background Technology

[0002] Commonly used confidential materials are primarily stored in the form of hard drives, optical discs, and paper documents. Generally, for these materials with relatively low confidentiality levels, the main method of destruction is cutting and shredding. Compared to incineration, while this method results in a lower level of destruction, it is more practical and has lower requirements for the security of the operating environment.

[0003] Accordingly, various shredding equipment is used in the aforementioned cutting and shredding operations. Existing shredding equipment for confidential documents mainly consists of a frame, a power unit, and a cutter head structure. Confidential documents are placed or pass through the cutter head structure, and the power unit achieves basic cutting and shredding effects.

[0004] For example, the utility model patent with authorization announcement number CN213054961U and authorization announcement date of April 27, 2021 discloses a hard disk cutting device, whose main structural components include: a worktable, an upper blade holder, a spring-loaded assembly, a pressure block, an upper blade, a drive mechanism, a horizontal plate, a vertical plate, a guide shaft, a spring-loaded component, a hydraulic cylinder seat, a column, a lower blade, and a lower blade holder.

[0005] The cutting device in this utility model patent has the following advantages: it has a simple structure, which improves the cutting efficiency of hard drives to be destroyed.

[0006] However, in actual use, this cutting device still has at least the following shortcomings in practicality and safety, specifically including:

[0007] First, the upper and lower blades produce a relatively large amount of flying debris during cutting, which is not only unsafe but also increases the difficulty of collecting and cleaning up the debris. This drawback is also obvious when cutting paper materials.

[0008] Secondly, its horizontal plate structure provides a relatively simple connection method for the piston rod, which makes it difficult for the cutting device to be better adapted to various drive mechanisms. This limitation is more prominent in the shredding of paper materials with large differences in required strength. For example, when cutting thin paper in small quantities, the drive mechanism can be various types of cylinders with relatively low downward pressure. However, when dealing with relatively hard paper such as corrugated paper, the drive mechanism should use relatively powerful hydraulic cylinders or electric cylinders. Utility Model Content

[0009] This application provides a blade structure that can be used for paper shredding. The technical problem it aims to solve is how to make the blade structure for paper shredding have both relative cutting safety and outstanding adaptability to the drive mechanism.

[0010] The technical solution adopted by this application to solve the above problems is: a blade structure that can be used for paper shredding, including a lifting horizontal plate, a vertical base plate, and a blade, and further including a crossbar frame unit disposed on the upper surface of the lifting horizontal plate and used to connect the cylinder shaft, a threaded groove block unit disposed on the crossbar frame unit and used to connect the cylinder shaft, a connecting nut unit disposed on the upper surface of the lifting horizontal plate and used to connect the cylinder shaft, and a plug-in cover plate unit disposed on the upper surface of the lifting horizontal plate, engaged with the threaded groove block unit and / or the connecting nut unit, and used to block cutting debris.

[0011] A further preferred technical solution is that the crossbar frame unit includes a vertical perforated plate and a vertical screw hole plate disposed on the upper surface of the lifting crossbar, and a fixed crossbar with both ends disposed on the vertical perforated plate and the vertical screw hole plate respectively, for inserting the cylinder shaft.

[0012] A further preferred technical solution is that the threaded groove block unit includes a transverse protrusion block disposed on the side of the vertical perforated plate or the vertical screw hole plate, and the lower end of which is used to engage the plug-in cover plate unit, and a threaded groove disposed on the upper end surface of the transverse protrusion block and used to install the cylinder shaft.

[0013] A further preferred technical solution is that the connecting nut unit includes a vertical stud disposed on the upper surface of the lifting horizontal plate and engaging with the plug-in cover plate unit, and a movable nut disposed on the vertical stud and used to connect the cylinder shaft.

[0014] A further preferred technical solution is that the plug-in cover plate unit includes a movable cover plate disposed on the upper surface of the lifting horizontal plate and clamped by the lower end face of the transverse protrusion block to block cutting debris, and a positioning side cut disposed on the movable cover plate and engaging the vertical stud.

[0015] A further preferred technical solution is that the connecting nut unit further includes an elastic washer disposed on the upper end surface of the movable nut and used to clamp the fixed crossbar.

[0016] A further preferred technical solution includes: a stiffening rib plate disposed on the lower surface of the lifting horizontal plate and connected to the vertical base plate, and a receiving hole disposed on the stiffening rib plate for inserting the fixed horizontal bar that has been removed from the vertical perforated plate and the vertical screw hole plate.

[0017] A further preferred technical solution is that the fixed crossbar includes a threaded section disposed on the vertical screw hole plate, and a diameter enlarged section disposed on the threaded section, inserted into the vertical hole plate, and used to abut against the side of the vertical screw hole plate.

[0018] A further preferred technical solution is that the crossbar frame unit also includes a rotating block disposed on the end face of the diameter enlargement section.

[0019] A further preferred technical solution is that the movable cover plate includes an inner side plate that abuts against the vertical perforated plate and the vertical screw hole plate on both sides, and an outer main body plate disposed on the inner side plate.

[0020] The beneficial effects of this application include at least the following five points.

[0021] First, in this cutter head structure, one of the crossbar frame unit, the threaded groove block unit, and the connecting nut unit can be used. This allows the cutter head structure to be adapted to various cylinder shafts while ensuring effective connection with the power cylinder, significantly improving its practicality. For example, the crossbar frame unit is adapted to cylinder shafts with rings, the threaded groove block unit is adapted to cylinder shafts with threads that can rotate, and the connecting nut unit is adapted to cylinder shafts with threads that cannot rotate.

[0022] Secondly, in this cutter head structure, the plug-in cover unit is located above the blade and has both installation stability and adjustable protrusion range. It can also be pressed down and fixed by the movable nut, so that its blocking and protection function for cutting debris is sufficient and appropriate, which significantly improves the safety of the cutter head structure.

[0023] Third, when the cylinder shaft is connected to the crossbar frame unit, the connecting nut unit, through the elastic washer, can also provide a clamping and anti-reverse function for the crossbar frame unit, improving the connection stability between the cylinder shaft and the connecting crossbar frame unit.

[0024] Fourth, the cutter head structure achieves the dual advantages of improved overall structural strength and reduced risk of loss of the removed fixed crossbar through the stiffening rib plate with storage holes.

[0025] Fifth, the threaded groove block unit and the connecting nut unit are both located between the vertical perforated plate and the vertical screw hole plate, and both are located below the fixed crossbar. This makes the reinforcement of the fixed crossbar by the elastic washer effective, and reduces the overall size of the cutter head structure, indirectly improving its practicality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this application.

[0027] Figure 2 This is a schematic diagram showing the position and structure of the threaded groove block unit and the connecting nut unit in this application.

[0028] Figure 3 This is a schematic diagram showing the position and shape of the threaded section and the diameter enlargement section in this application.

[0029] Figure 4 This is a schematic diagram of the plug-in cover plate unit in this application.

[0030] Figure 5 This is a schematic diagram showing the location and shape of the stiffening ribs in this application.

[0031] Figure 6 This is a schematic diagram illustrating how the storage hole is used in this application.

[0032] Figure 7 This is a schematic diagram of the first connection method of the cylinder block shaft in this application.

[0033] Figure 8 This is a schematic diagram of the second connection method of the cylinder block shaft in this application.

[0034] Figure 9 This is a schematic diagram of the first method of using the elastic washer in this application.

[0035] Figure 10 This is a schematic diagram showing the position and shape of the elastic washer in this application.

[0036] Figure 11 This is a schematic diagram illustrating the second method of using the elastic washer in this application.

[0037] The meanings of the markings in the diagram are as follows.

[0038] Cylinder block shaft a;

[0039] 11. Lifting horizontal plate, 12. Vertical base plate, 13. Blade, 14. Limiting hole;

[0040] 1. Crossbar frame unit; 2. Threaded groove block unit; 3. Connecting nut unit; 4. Plug-in cover plate unit; 5. Stiffening rib; 6. Storage hole.

[0041] Vertical perforated plate 101, vertical screw hole plate 102, fixed crossbar 103, threaded section 103-1, diameter enlargement section 103-2, rotating block 104;

[0042] Horizontal protrusion 201, threaded groove 202;

[0043] Vertical stud 301, movable nut 302, elastic washer 303;

[0044] Movable cover plate 401, inner side plate 401-1, outer main body plate 401-2, positioning side cutout 402. Detailed Implementation

[0045] The following description is merely a preferred embodiment of this application and is not intended to limit the scope of this application.

[0046] like Figures 1-11 As shown, a blade structure for paper shredding includes a lifting horizontal plate 11, a vertical base plate 12, and a blade 13. It also includes a crossbar frame unit 1 disposed on the upper surface of the lifting horizontal plate 11 and used to connect to the cylinder shaft a, a threaded groove block unit 2 disposed on the crossbar frame unit 1 and used to connect to the cylinder shaft a, a connecting nut unit 3 disposed on the upper surface of the lifting horizontal plate 11 and used to connect to the cylinder shaft a, and a pluggable cover plate unit 4 disposed on the upper surface of the lifting horizontal plate 11, engaged with the threaded groove block unit 2 and / or the connecting nut unit 3, and used to block cutting debris.

[0047] In this embodiment, the main material of the cutter head structure is plastic, such as polyamide or polycarbonate, thereby ensuring sufficient structural strength.

[0048] The lifting horizontal plate 11, the vertical base plate 12, the horizontal bar frame unit 1, the threaded groove block unit 2, and the connecting nut unit 3 are integrally formed, and the blade 13 is screwed to the vertical base plate 12.

[0049] When in use, the blade structure is connected to the cylinder shaft a, and then connected to the limit rod on the paper shredding equipment through the limit hole 14, so that the downward cutting action of the blade 13 is stable and safe.

[0050] On the other hand, when the cylinder shaft a is provided with mounting holes, it is adapted to the crossbar frame unit 1, as detailed in the appendix. Figure 7 When the front end of the cylinder shaft a is threaded and can rotate, it can be adapted to the threaded groove block unit 2. For details, please refer to the appendix. Figure 8 When the front end of the cylinder shaft a is threaded and cannot rotate on its own, it is adapted to the connecting nut unit 3. Therefore, this cutter head structure has the advantage of high adaptability of the drive mechanism, which includes a pneumatic cylinder, a hydraulic cylinder, and an electric cylinder.

[0051] Finally, the plug-in cover unit 4 is located above the blade 13. It is not only securely installed, but its protrusion relative to the lifting cross plate 11 is adjustable. Therefore, it can appropriately block cutting debris, preventing it from flying upwards, thus primarily protecting the operator and concentrating the falling debris for easy subsequent cleaning. Therefore, this blade structure also boasts outstanding safety and practicality, with a relatively small debris scattering area and minimal subsequent cleaning workload.

[0052] The crossbar frame unit 1 includes a vertical perforated plate 101 and a vertical screw hole plate 102 disposed on the upper surface of the lifting crossbar 11, and a fixed crossbar 103 disposed at both ends on the vertical perforated plate 101 and the vertical screw hole plate 102 respectively, and used for inserting the cylinder shaft a.

[0053] In this embodiment, the vertical perforated plate 101 and the vertical screw hole plate 102 are parallel and both are rectangular in shape. The former has a circular hole and the latter has a circular screw hole.

[0054] When the crossbar frame unit 1 is connected to the cylinder shaft a, the fixed crossbar 103 is first inserted into the vertical hole plate 101, then inserted into the cylinder shaft a, and finally screwed into the vertical screw hole plate 102. Thus, the fixed crossbar 103 can be used as the connection position of the drive mechanism of the entire cutter head structure.

[0055] Accordingly, when selecting the threaded groove block unit 2 or the connecting nut unit 3 to connect the cylinder shaft a, the fixed crossbar 103 can or must be removed from the vertical perforated plate 101 and the vertical screw hole plate 102.

[0056] The threaded groove block unit 2 includes a transverse protrusion 201 disposed on the side of the vertical perforated plate 101 or the vertical screw hole plate 102 and whose lower end is used to engage the plug-in cover plate unit 4, and a threaded groove 202 disposed on the upper end surface of the transverse protrusion 201 and used to install the cylinder shaft a.

[0057] In this embodiment, the area between the lower end face of the transverse protrusion 201 and the upper surface of the lifting cross plate 11 corresponds to the installation position of the plug-in cover unit 4. The transverse protrusion 201 is cuboid in shape, and the threaded groove 202 is a circular groove.

[0058] When the cylinder shaft a is rotatable, it can be connected to the threaded groove 202 through the threaded section at its end position, so that the transverse protrusion 201 replaces the fixed crossbar 103 and serves as the connection position of the drive mechanism of the entire cutter head structure.

[0059] Specifically, if there is a fastening nut on the cylinder shaft a, it can be rotated and abut against the upper surface of the transverse protrusion 201, thereby further improving the connection stability between the cylinder shaft a and the transverse protrusion 201.

[0060] The connecting nut unit 3 includes a vertical stud 301 disposed on the upper surface of the lifting horizontal plate 11 and engaging with the plug-in cover plate unit 4, and a movable nut 302 disposed on the vertical stud 301 and used to connect the cylinder shaft a.

[0061] In this embodiment, when the cylinder shaft a cannot rotate, it can be connected to the movable nut 302 via the threaded section at its end. The connection stability is generally poor at this time, and it can be reinforced by the aforementioned fastening nut on the cylinder shaft a, or by providing two movable nuts 302 that clamp each other, both of which can improve the connection strength between the cylinder shaft a and the connecting nut unit 3.

[0062] The plug-in cover plate unit 4 includes a movable cover plate 401 disposed on the upper surface of the lifting horizontal plate 11 and clamped by the lower end face of the transverse protrusion 201 to block cutting debris, and a positioning side cutout 402 disposed on the movable cover plate 401 and engaging with the vertical stud 301.

[0063] In this embodiment, the movable cover plate 401 is rectangular or T-shaped, and its upper and lower surfaces are clamped by the transverse protrusion 201 and the lifting cross plate 11, respectively, thereby achieving preliminary installation stability.

[0064] Furthermore, the positioning side cutout 402 is rectangular in shape, and the vertical stud 301 appropriately fits the two long sides of the positioning side cutout 402, thereby further improving the installation stability of the movable cover plate 401 and ensuring that the movable cover plate 401 is not prone to spontaneous displacement when the cutter head structure is raised and lowered.

[0065] Meanwhile, when paper shredding is being performed, if a relatively large amount of debris is found to be flying around, the movable cover plate 401 can also be actively pulled outwards. When the cutter head structure is not in use, the blade 13 can be removed, and the movable cover plate 401 can be actively pushed inwards, that is, the vertical stud 301 enters the positioning side cutout 402, ultimately improving the safety of the cutter head structure in its idle storage state.

[0066] The connecting nut unit 3 also includes an elastic washer 303 disposed on the upper end surface of the movable nut 302 and used to clamp the fixed crossbar 103.

[0067] In this embodiment, one way to position the connecting nut unit 3 is as follows: the vertical projection of the fixed crossbar 103 falls on the movable nut 302. In addition to its primary function of connecting the cylinder shaft a, the connecting nut unit 3 also has at least the following two auxiliary functions.

[0068] First, when the cylinder shaft a is connected to the crossbar frame unit 1, the fixed crossbar 103 is generally located directly above the movable nut 302. The movable nut 302, together with the elastic washer 303, rotates and rises, thereby causing the elastic washer 303 to properly clamp the fixed crossbar 103, preventing the fixed crossbar 103 from retracting and falling off, and ultimately improving the connection stability between the fixed crossbar 103 and the cylinder shaft a.

[0069] Second, when the cylinder shaft a is connected to the crossbar frame unit 1 or the threaded groove block unit 2, the movable nut 302 is idle. At this time, it can rotate downwards. After the movable cover plate 401 is selected with a protrusion range, the movable cover plate 401 is pressed down to fix it, so as to prevent the movable cover plate 401 from moving spontaneously and improve the stability of the paper debris blocking function.

[0070] The cutter head structure also includes a stiffening rib 5 disposed on the lower surface of the lifting horizontal plate 11 and connected to the vertical base plate 12, and a receiving hole 6 disposed on the stiffening rib 5 for inserting the fixed horizontal bar 103 that has been removed from the vertical perforated plate 101 and the vertical screw hole plate 102.

[0071] In this embodiment, the stiffening rib 5 is triangular in shape and is used to connect and reinforce the lifting horizontal plate 11 and the vertical base plate 12. The storage hole 6 is a round hole or a screw hole, used to insert or screw in and store the fixed horizontal bar 103 that has been removed and is in an idle state, thereby preventing the fixed horizontal bar 103 from being lost.

[0072] On the other hand, there are four limiting holes 14, corresponding to four limiting rods. When the fixed crossbar 103 is idle on the storage hole 6, it is horizontally separated from the above four limiting rods, ensuring the storage function of the fixed crossbar 103 and not affecting the normal lifting and lowering use of the cutter head structure.

[0073] The fixed crossbar 103 includes a threaded section 103-1 disposed on the vertical screw hole plate 102, and a diameter enlarged section 103-2 disposed on the threaded section 103-1, inserted into the vertical hole plate 101, and used to abut against the side of the vertical screw hole plate 102.

[0074] In this embodiment, the end face of the enlarged diameter section 103-2 with the threaded section 103-1 is used to abut against the vertical screw hole plate 102, thereby improving the installation stability of the entire fixed crossbar 103.

[0075] The crossbar frame unit 1 also includes a rotating block 104 disposed on the end face of the diameter enlargement section 103-2.

[0076] In this embodiment, the rotating block 104 is square or hexagonal in shape and is used to tighten and loosen the fixed crossbar 103. Meanwhile, the rotating block 104 does not affect the idle function of the fixed crossbar 103 in the storage hole 6; that is, the size of the rotating block 104 is relatively small, and when the fixed crossbar 103 is stored, the rotating block 104 will not touch the aforementioned four limiting rods.

[0077] The movable cover plate 401 includes an inner side plate 401-1 that abuts against the vertical perforated plate 101 and the vertical screw hole plate 102 on both sides, and an outer main body plate 401-2 disposed on the inner side plate 401-1.

[0078] In this embodiment, the inner side plate 401-1 and the outer main body plate 401-2 are combined, corresponding to the T-shaped pattern of the movable cover plate 401. In the length direction of the fixed crossbar 103, the length of the outer main body plate 401-2 is greater than that of the inner side plate 401-1, thus giving the movable cover plate 401 an expanded outer region. This expanded region is generally located directly above the blade 13, thereby further improving the blocking effect on paper cutting debris.

[0079] Meanwhile, both the inner side plate 401-1 and the outer main body plate 401-2 are rectangular in shape. The two symmetrical sides of the inner side plate 401-1 abut against the opposite surfaces of the vertical perforated plate 101 and the vertical screw hole plate 102, which can further improve the installation stability of the movable cover plate 401, making it slide only linearly and avoiding unnecessary lateral shaking.

[0080] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of this application. These are non-inventive modifications and are protected by patent law as long as they are within the scope of the claims of this application.

Claims

1. A blade structure for paper shredding, comprising a lifting horizontal plate (11), a vertical base plate (12), and a blade (13), characterized in that: It also includes a crossbar frame unit (1) disposed on the upper surface of the lifting crossbar (11) and used to connect the cylinder shaft (a), a threaded groove block unit (2) disposed on the crossbar frame unit (1) and used to connect the cylinder shaft (a), a connecting nut unit (3) disposed on the upper surface of the lifting crossbar (11) and used to connect the cylinder shaft (a), and a plug-in cover plate unit (4) disposed on the upper surface of the lifting crossbar (11), engaged with the threaded groove block unit (2) and / or the connecting nut unit (3), and used to block cutting debris.

2. The blade structure for paper shredding according to claim 1, characterized in that: The crossbar frame unit (1) includes a vertical perforated plate (101) and a vertical screw hole plate (102) disposed on the upper surface of the lifting crossbar (11), and a fixed crossbar (103) with both ends disposed on the vertical perforated plate (101) and the vertical screw hole plate (102) respectively, for inserting the cylinder shaft (a).

3. The blade structure for paper shredding according to claim 2, characterized in that: The threaded groove block unit (2) includes a transverse protrusion (201) disposed on the side of the vertical opening plate (101) or the vertical screw hole plate (102) and whose lower end is used to engage the plug-in cover plate unit (4), and a threaded groove (202) disposed on the upper end surface of the transverse protrusion (201) and used to install the cylinder shaft (a).

4. The blade structure for paper shredding according to claim 3, characterized in that: The connecting nut unit (3) includes a vertical stud (301) disposed on the upper surface of the lifting cross plate (11) and engaging with the plug-in cover plate unit (4), and a movable nut (302) disposed on the vertical stud (301) and used to connect the cylinder shaft (a).

5. The blade structure for paper shredding according to claim 4, characterized in that: The plug-in cover unit (4) includes a movable cover (401) disposed on the upper surface of the lifting horizontal plate (11) and clamped by the lower end face of the transverse protrusion (201) to block cutting debris, and a positioning side cut (402) disposed on the movable cover (401) and engaging the vertical stud (301).

6. The blade structure for paper shredding according to claim 4, characterized in that: The connecting nut unit (3) also includes an elastic washer (303) disposed on the upper end surface of the movable nut (302) and used to clamp the fixed crossbar (103).

7. A blade structure for paper shredding according to claim 2, characterized in that: It also includes a stiffening rib (5) disposed on the lower surface of the lifting cross plate (11) and connected to the vertical base plate (12), and a receiving hole (6) disposed on the stiffening rib (5) for inserting the fixed cross bar (103) that has been removed from the vertical perforated plate (101) and the vertical screw hole plate (102).

8. A blade structure for paper shredding according to claim 2, characterized in that: The fixed crossbar (103) includes a threaded section (103-1) disposed on the vertical screw hole plate (102), and a diameter enlarged section (103-2) disposed on the threaded section (103-1), inserted into the vertical hole plate (101), and used to abut against the side of the vertical screw hole plate (102).

9. A blade structure for paper shredding according to claim 8, characterized in that: The crossbar frame unit (1) also includes a rotating block (104) disposed on the end face of the diameter enlargement section (103-2).

10. A blade structure for paper shredding according to claim 5, characterized in that: The movable cover plate (401) includes an inner side plate (401-1) that abuts against the vertical perforated plate (101) and the vertical screw hole plate (102) on both sides respectively, and an outer main body plate (401-2) disposed on the inner side plate (401-1).

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