A punching mechanism and a binding machine containing the same.

Abstract

A punching mechanism and a binding machine containing the same are disclosed. The punching mechanism includes a punching assembly and a cutting assembly mounted on a frame. The punching assembly includes a handle and a moving block. The handle drives the moving block to slide up and down within the frame to punch holes. The cutting assembly includes a slider that slides vertically within the frame and a cutting blade that slides obliquely with the slider. The moving block and the slider are linked together. When the handle drives the moving block to move down and abut against the slider, the slider moves down to drive the cutting blade to move horizontally to cut the tube. When the handle returns to its original position and drives the moving block to move up and abut against the slider, the slider moves up to drive the cutting blade to move horizontally in the opposite direction to return to its original position. This application has the advantages of achieving a flush cutting surface at the rivet cutting point, preventing unevenness of the pressing surface, and simultaneously driving the cutting assembly to smoothly cut the rivet during the punching process, reducing the likelihood of jamming, loosening, or failure.

Description

Technical Field

[0001] This application relates to the technical field of binding machines, and more specifically, to a punching mechanism and a binding machine containing the same. Background Technology

[0002] A manual binding machine is a device that organizes and binds loose sheets of paper, typically used for binding financial receipts and archival documents. The structure of a typical manual binding machine includes a base, a frame mounted on the base, a tube-cutting assembly (for cutting the rivet tubes), a riveting assembly, a punching assembly, and handles hinged to the frame (usually two handles, one for driving the riveting assembly and the other for punching). Before binding with the riveting assembly, the tubes need to be cut to the appropriate length using the tube-cutting assembly, then inserted into the binding holes of the document for riveting assembly.

[0003] To improve the overall efficiency of the machine, existing technologies link the drilling action of the punching assembly and the cutting action of the pipe cutting assembly, thereby achieving simultaneous pipe cutting during the drilling process. For example, a linkage structure disclosed in ZL202322162400.X mainly relies on the interaction between a guide mechanism and a linkage component. One end of the linkage component is rotatably connected to the frame, and the other end is connected to the cutting assembly. The guide mechanism is connected to the punching assembly and moves up and down with it. The up-and-down movement of the guide mechanism drives the linkage component to rotate, causing the cutting assembly on it to cut the pipe or move away from the pipe. However, this linkage structure achieves the pipe cutting action by driving the linkage component connected to the cutting assembly to rotate, and the cutting process... The cutting assembly cannot maintain a perfectly horizontal movement. Instead, its rotation causes it to be at different heights, resulting in an arc-shaped cutting surface. This unevenness leads to uneven pressing surfaces and uneven riveting during the subsequent pressing process. Furthermore, because the cutting assembly is driven to cut and reset by the rotation of the linkage, it cannot maintain a perfectly horizontal sliding motion. Instead, it experiences height differences, which may cause the cutting assembly to jam against the inner wall of the channel during its sliding process. Moreover, the second guide rod, located below in the patent document, may detach and fail during the reverse rotation of the push-limit rod. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, this application provides a drilling mechanism that can achieve a flush cutting surface at the rivet cutting point, which will not cause uneven pressing surface, and can simultaneously drive the pipe cutting assembly to smoothly cut the rivet during the drilling process, making it less likely to jam, loosen, or fail.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application is as follows: a drilling mechanism, which includes a drilling assembly and a pipe cutting assembly mounted on a frame. The drilling assembly includes a handle and a moving block. The handle is used to drive the moving block to slide up and down within the frame to drill holes. The cutting assembly includes a slider that slides vertically within the frame and a cutting blade that slides obliquely with the slider. The moving block and the slider are linked together. When the handle drives the moving block to move down and abut against the slider, the slider moves down to drive the cutting blade to move horizontally to cut the pipe. When the handle resets and drives the moving block to move up and abut against the slider, the slider moves up to drive the cutting blade to move horizontally in the opposite direction to reset.

[0006] Using the above structure, this application links the slider in the pipe cutting assembly and the moving block in the drilling assembly together. When the moving block is driven by the handle to slide up and down within the frame to perform drilling and resetting actions, the slider linked to the moving block can also be driven to move up and down simultaneously. The up and down movement of the slider allows the cutting blade, which slides obliquely with it, to move back and forth horizontally to cut the rivet and reset (i.e., move away from the rivet). Specifically, when the handle is pressed down, the driving transmission mechanism drives the drilling assembly to move down, and the moving block moves down simultaneously. When the moving block reaches the slider, it drives the slider to move down as well. During the downward movement, the slider drives the cutting end of the cutting blade to perform a horizontal cutting action to cut the rivet. When the handle is reset, it drives the drilling assembly to reset upwards, and the moving block also resets upwards simultaneously. After the moving block moves upward and abuts against the slider, it drives the slider to move upward and reset. This causes the slider to drive the cutting end of the cutter to move horizontally in the opposite direction and reset, thus disengaging from the cutting of the rivet tube. After reset, it is ready for the next tube cutting action. Therefore, by linking the slider in the tube cutting assembly and the moving block in the punching assembly, this application can simultaneously realize the cutting action of the rivet tube during the punching operation and the reset of the tube cutting assembly during the reset of the punching assembly, effectively improving the working efficiency of the whole machine. More importantly, this punching and tube cutting linkage drive structure of this application can make the cutting surface of the rivet tube present a horizontal and neat cutting surface. This results in a flat and even riveting surface during subsequent riveting, making it less likely for the bound documents to loosen or fall apart. Moreover, the cutting and reset process of the rivet tube ensures that the cutter always moves horizontally, making it less likely for the cutter to jam or become loose from the slider.

[0007] Furthermore, the upper and lower ends of the slider are respectively provided with a first abutting block and a second abutting block for corresponding abutting with the upper and lower ends of the moving block; when the first abutting block abuts with the moving block, the moving block drives the slider upward to drive the cutting end of the cutter away from the rivet tube; when the second abutting block abuts with the moving block, the moving block drives the slider downward to drive the cutting end of the cutter to cut the rivet tube; with the above structure, the slider of this application achieves abutting with the upper and lower ends of the moving block respectively through the setting of the upper and lower abutting blocks, thereby realizing the process of the moving block being driven by the handle to move up and down, and can generate linkage with the slider. During the drilling process, the slider moves downward to cause the cutting end of the cutter to cut the rivet tube, and during the non-drilling and reset process, the slider can be driven upward to cause the cutting end of the cutter to disengage from the rivet tube.

[0008] Furthermore, the positions where the movable block abuts against the first abutting block and the second abutting block are respectively the first abutting position and the second abutting position. The first abutting position is platform-shaped, and the second abutting position is a stepped groove recessed towards the upper end of the movable block. By adopting this structure, setting the first abutting position at the upper end of the movable block as a platform-shaped position and the second abutting position as a stepped groove, the stroke of the movable block driving the slider to cut the rivet tube can be effectively controlled, avoiding the situation where the rivet tube is not completely cut due to insufficient stroke.

[0009] Furthermore, the distance between the first abutment position and the second abutment position in the upper and lower directions is less than the distance between the first abutment block and the second abutment block in the upper and lower directions. With this structure, during the descent of the moving block, there is a portion of its travel that will not contact the slider. After descending to the appropriate drilling position, the second abutment block, which then abuts the slider, drives the cutting end of the cutter to cut the rivet tube, thus completing the cutting of the rivet tube while drilling. Moreover, this setting can effectively control the stroke of the drilling component, enabling the drilling component to perform effective drilling.

[0010] Furthermore, the frame is provided with a vertically extending slide groove, and the slider slides vertically within the slide groove. A limiting step surface is provided within the slide groove, which abuts against the first abutting block. With this structure, the slider can slide precisely up and down within the slide groove under the action of the moving block, achieving precise cutting and removal of the rivet tube, ensuring accurate resetting and preventing deviation. The limiting step surface within the slide groove allows the first abutting block to abut against it. When the first abutting block abuts against this limiting step surface, the slider will no longer slide down, allowing the cutting tool to completely cut the rivet tube, thus avoiding inaccurate resetting that might result from excessive slider sliding.

[0011] Furthermore, the cutting blade is provided with an oblique through hole, and the corresponding slider is provided with an oblique top block, which slides within the oblique through hole. When the moving block disengages from the slider, the slider remains stationary relative to the cutting blade due to the contact between the oblique top block and the oblique through hole. With the above structure, the up-and-down sliding of the slider can be converted into the left-and-right sliding of the cutting blade to achieve the cutting action of the rivet tube. Due to this oblique engagement, when the moving block is not in contact with the slider, the slider will not slide up-and-down relative to the cutting blade under the resistance generated by the oblique engagement, thus preventing the slider from sliding down due to its own weight without the support of the moving block. If the slider slides down under its own weight, the cutting force generated by its own weight is small and it is not easy to cut the rivet tube. It will also cause the distance between the slider and the moving block to be too large. In this case, the moving block cannot push the slider down within its effective stroke to complete the effective cutting of the rivet tube.

[0012] Furthermore, the handle is equipped with a drive gear, the corresponding moving block is equipped with a first rack meshing with the drive gear, and the frame is equipped with a second rack meshing with the drive gear. The first and second racks are symmetrically arranged radially along the drive gear and are parallel to each other. With this structure, when the handle is pressed down, the handle drives the drive gear to rotate, which, through meshing with the rack, is converted into a downward linear motion of the moving block, thereby realizing the drilling action. When the handle is rotated in the opposite direction to reset, through meshing with the rack, it is converted into an upward linear motion of the moving block, thereby realizing the reset of the drilling component. This structure makes the operation more labor-saving and provides sufficient drilling pressure.

[0013] Furthermore, at least two drive gears are provided, and the two drive gears are symmetrically distributed on both sides along the thickness direction of the handle. The corresponding moving block is provided with two racks that mesh with the two drive gears respectively. With this structure, during the rotation of the handle, the drive gears on both sides can be driven to push the moving block to move up and down more evenly and smoothly, so as to realize the stable implementation of drilling and driving riveting cutting.

[0014] This application also provides a binding machine that includes the punching mechanism described above. The binding machine using the punching mechanism can simultaneously perform the cutting action on the rivet tube during the punching operation, thereby effectively improving the overall working efficiency of the machine. Attached Figure Description

[0015] Figure 1 This application presents a structural schematic diagram of the first view of the drilling mechanism.

[0016] Figure 2This application presents a structural schematic diagram of the second view of the drilling mechanism.

[0017] Figure 3 The third view of the drilling mechanism in this application is a structural schematic diagram (with the handle removed).

[0018] Figure 4 The fourth view of this application is a structural schematic diagram (frame and base) of the drilling mechanism.

[0019] Figure 5 This application presents an exploded view of the drilling mechanism's structural schematic diagram.

[0020] Figure 6 This application presents a structural schematic diagram of the pipe cutting assembly and the moving block assembly.

[0021] Figure 7 This application presents a structural diagram of the rack.

[0022] Figure 8 This application contains a structural schematic diagram of a cross-sectional view of a binding machine.

[0023] Figure 9 This application presents a structural diagram of the binding machine.

[0024] As shown in the attached diagram: 1. Frame, 101. Slide groove, 102. Limiting step surface, 103. Second rack, 2. Handle, 3. Moving block, 301. First abutment position, 302. Second abutment position, 303. First rack, 4. Slider, 401. First abutment block, 402. Second abutment block, 403. Angled top block, 404. Limiting block, 5. Cutting blade, 501. Cutting blade holder, 502. Angled through hole, 503. Notch, 6. Drill, 7. Paper pressing table, 8. Paper pressing table linkage plate, 9. Cutting blade, 10. Drive gear, 11. Base. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are merely preferred embodiments, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this invention.

[0026] Furthermore, it should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or it may be fixed via another intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or it may be fixed via another intermediate component. When a component is considered to be "set on" another component, it can be set directly on the other component or it may be fixed via another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only; unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] As attached Figure 1-7 The diagram illustrates a drilling mechanism according to this application. The mechanism includes a drilling assembly and a pipe-cutting assembly mounted on a frame 1. The drilling assembly includes a handle 2 and a moving block 3. The handle 2 drives the moving block 3 to slide up and down within the frame 1 to drill holes. The cutting assembly includes a slider 4 vertically slidably engaged within the frame 1 and a cutting blade 5 obliquely slidably engaged with the slider 4. The moving block 3 and the slider 4 are interconnected. When the handle 2 drives the moving block 3 downwards to abut against the slider 4, the slider 4 follows downwards to drive the cutting blade 5 to move horizontally to cut the pipe. When the handle returns to its original position and drives the moving block 3 upwards to abut against the slider 4, the slider 4 follows upwards to drive the cutting blade 5 to move horizontally in the opposite direction to its original position, i.e., away from the riveting pipe. Specifically, a drill bit is connected below the moving block 3 of this application. The machine frame 1 includes a drilling structure consisting of a drilling cutter 6 and a paper pressing table 7. A paper pressing table linkage piece 8, which is rotatably connected to the paper pressing table 7, is also rotatably connected to the frame 1. Specifically, a rotating shaft is installed on the frame 1, and the paper pressing table linkage piece 8 has a shaft hole near its center that rotates and engages with the rotating shaft. The point where the two engage serves as a fulcrum. One end of the paper pressing table linkage piece 8 has a slot to rotatably engage with the locking shaft on the paper pressing table 7, while the other end abuts against the rivet tube. When the handle 2 is pressed down, causing the moving block 3 to descend, the drill 6 and the paper pressing table 7 also descend to perform drilling. During this process, the end of the paper pressing table linkage piece 8 that is engaged with the paper pressing table 7 also descends under the support and rotation of the fulcrum, while the other end ascends. This ascending end abuts against the lower end of the rivet tube, fixing the rivet tube at a suitable height. At this time, the cutting end of the cutter 5 in the tube cutting assembly moves horizontally to effectively cut the rivet tube horizontally.

[0028] Using the above structure, this application links the slider in the pipe cutting assembly and the moving block 3 in the drilling assembly. When the moving block 3 is driven by the handle 2 to slide up and down within the frame 1 to perform drilling and resetting actions, the slider 4, which is linked with the moving block 3, can also be driven to move up and down simultaneously. The up and down movement of the slider 4 allows the cutting blade 5, which is obliquely slidably engaged with it, to move back and forth horizontally to cut the rivet and reset it away from the rivet. Specifically, when the handle 2 is pressed down, the drilling assembly moves down, and the moving block 3 moves down simultaneously. When the moving block 3 moves down to abut against the slider 4, it drives the slider 4 to move down as well. During the downward movement, the slider 4 drives the cutting end of the cutting blade 5 to perform a horizontal cutting action to cut the rivet. When the handle 2 is reset, the drilling assembly moves up to reset, and the moving block 3 moves up to reset simultaneously. When the moving block 3 moves up to abut against the slider 4, it drives the slider 4 to move up to reset. This causes the slider 4 to drive the cutting end of the cutter 5 to move in the opposite direction horizontally to reset, thus disengaging from the cutting of the rivet tube. After reset, it is ready for the next tube cutting action. Therefore, by linking the slider 4 in the tube cutting assembly and the moving block 3 in the punching assembly, the cutting action of the rivet tube can be realized simultaneously during the punching operation, and the reset of the tube cutting assembly can also be realized during the reset of the punching assembly, effectively improving the working efficiency of the whole machine. More importantly, this punching and tube cutting linkage drive structure of the present application can make the cutting surface of the rivet tube present a horizontal and neat cutting surface, so that the pressing surface of the subsequent riveting is flat and the riveting is even, which will not easily cause the bound documents to loosen or fall apart. Moreover, by driving the slider 4 to move up and down through the moving block 3, which in turn drives the cutter 5 to move horizontally, the entire punching and tube cutting action runs more smoothly, the linkage between them is more stable, the structure is compact, the connection between the parts is firm, the structure is simple, and the operation is more labor-saving.

[0029] As attached Figure 1-6As shown, the slider 4 of this application has an oblique sliding engagement with the cutter 5. Specifically, the cutter 5 includes a cutter holder 501 and a cutter 9 fixedly connected to the cutter holder 501. The end where the cutter 9 is located can be called the cutting end, and the other end can be called the driving end. The slider 4 and the driving end have an oblique sliding engagement to drive the cutter 5 to move back and forth in the horizontal direction to cut the rivet or reset it. Specifically, a horizontally extending cutter channel can be provided on the frame 1 to accommodate the cutter 5. The cutter 5 slides horizontally back and forth along the cutter channel under the drive of the slider 4. The design utilizes an oblique approach to convert the vertical sliding of the slider 4 into the horizontal sliding of the cutter 5 in the left and right directions. This allows the blade 11 on the cutter 5 to cut the rivet tube and then return to its original position while sliding horizontally. The cut surface of the rivet tube is flat, facilitating the formation of a flat and even pressing surface during subsequent riveting. Furthermore, this transmission method, which converts vertical sliding into horizontal back-and-forth movement, ensures smoother operation of the cutting assembly during rivet tube cutting, achieving effective and regular cutting of the rivet tube.

[0030] As attached Figure 1 , Figure 4 and Figure 6 The slider 4 described in this application is provided with a first abutting block 401 and a second abutting block 402 at its upper and lower ends, respectively, for abutting against the upper and lower ends of the moving block 3. When the first abutting block 401 abuts against the moving block 3, the moving block 3 drives the slider 4 upward to drive the cutting end of the cutter 5 away from the rivet tube. When the second abutting block 402 abuts against the moving block 3, the moving block 3 drives the slider 4 downward to drive the cutting end of the cutter 5 to cut the rivet tube. Specifically, the first abutting block 401 is located at the upper end of the slider 4 and faces the moving block 3. The second abutment block 402 is located at the lower end of the slider 4 and extends toward the side where the moving block 3 is located. The moving block 3 extends into the gap between the first abutment block 401 and the second abutment block 402. So that when the moving block 3 is driven by the handle 2 to slide up and down, it can abut against the first abutment block 401 and the second abutment block 402 respectively, so as to drive the slider 4 to slide up and down and generate linkage. During the drilling process, the slider 4 follows downward so that the cutting end of the cutter 5 cuts the rivet tube. During the non-drilling reset process, the slider 4 can be driven upward so that the cutting end of the cutter 5 disengages from the rivet tube.

[0031] As attached Figure 1 , Figure 4 and Figure 6The movable block 3 described in this application is used to abut against the first abutting block 401 and the second abutting block 402 at the first abutting position 301 and the second abutting position 302, respectively. The first abutting position 301 is platform-shaped, and the second abutting position 302 is a stepped groove recessed towards the upper end of the movable block 3. Specifically, the first abutting position 301 at the upper end of the movable block 3 is set as a platform shape, while the second abutting position 302 is set as a stepped groove. When the lower end surface of the first abutting block 401 abuts against the first abutting position 301, both are flat surfaces in contact without any drop. However, when the second abutting position 302 and the second abutting block 402 come into contact, due to the setting of the stepped groove, the lower end of the movable block 3 must descend a certain distance before it can abut against the stepped groove and drive the slider 4 to descend. This can effectively control the movable block 3 to accurately drive the slider 4 to cut the rivet tube, avoiding the situation where the rivet tube is not cut completely due to insufficient stroke.

[0032] As attached Figure 1 , Figure 3 and Figure 6 As shown, the distance between the first abutment position 301 and the second abutment position 302 in the upper and lower directions is smaller than the distance between the first abutment block 401 and the second abutment block 402 in the upper and lower directions. Specifically, due to the limitation of the distance mentioned above, when the moving block 3 descends, there is a part of its stroke that will not contact the slider 4. After descending to the appropriate drilling position, the second abutment block 402 abuts the slider 4 and drives the cutting end of the cutter 5 to cut the rivet tube, thus completing the cutting of the rivet tube while drilling. Moreover, this setting can also effectively control the stroke of the drilling component, so that the drilling component can perform effective drilling.

[0033] As attached Figure 4-5 and Figure 7As shown, the frame 1 of this application is provided with a vertically extending slide groove 101. The slider 4 slides vertically within the slide groove 101, and a limiting step surface 102 is provided within the slide groove 101. The limiting step surface 102 is used to abut against the first abutting block 401. Specifically, the slide groove 101 and the cutter channel are connected in a cross shape. A through hole is provided near the upper end of the slide groove 101 along the wall thickness direction of the frame 1. The first abutting block 401 of the slider 4 can pass through the through hole to abut against the moving block 3. One side wall of the through hole forms the limiting step surface 102. The vertical extension length of the through hole is greater than the vertical extension thickness of the first abutting block 401. This ensures that the slider 4 moves up and down within the through hole under the abutment of the moving block 3; while the second abutment block 402 extends directly from the lower end of the slide groove 101 in the thickness direction to the side of the moving block 3 so as to abut against it; the slider 4 can slide precisely up and down within the slide groove 101 under the drive of the moving block 3 to achieve cutting and moving away from the rivet tube, with accurate resetting and less prone to deviation; and a limiting step surface 102 is provided in the slide groove 101 for the first abutment block 401 to abut against. When the first abutment block 401 of the slider 4 abuts against the limiting step surface 102, the slider 4 will no longer slide down and can achieve complete cutting of the rivet tube by the cutter 5 at this time, thereby avoiding jamming or inaccurate resetting that may occur due to excessive sliding of the slider 4.

[0034] As attached Figure 5-6As shown, the cutter 5 described in this application is provided with an oblique through hole 502, and the corresponding slider 4 is provided with an oblique push block 403. The oblique push block 403 is slidably engaged in the oblique through hole 502. When the moving block 3 disengages from the slider 4, the slider 4 remains stationary relative to the cutter 5 due to the abutment action between the oblique push block 403 and the oblique through hole 502. Specifically, the oblique through hole 502 has a notch 503 on one side wall in the width direction of the cutter holder 501. During engagement, the cutter holder 501 is pushed from the notch 503 position. The slider 4 is inserted into the inclined top block 403 to achieve a fit. Limiting blocks 404 are respectively provided at the upper and lower ends of the inclined top block 403. The limiting blocks 404 and the inclined top block 403 form a Z-shaped structure to restrict the sliding of the slider 4 relative to the cutter 5, preventing it from disengaging from the cutter 5. The inclined top block 403 has an inclined surface on the side facing the cutting end and another inclined surface on the side facing the driving end. Both inclined surfaces slope downwards from the cutting end towards the driving end. Through the fitting and cooperation between the two inclined surfaces and the inclined through hole 502, when the slider 4 moves... As the slider 4 slides downward along the slide groove 101 under the drive of the moving block 3, the inclined surface on the side facing the cutting end pushes the cutter 5 towards the end where the cutter 9 is located, i.e., the cutting end, thereby cutting the rivet tube through the horizontal movement of the cutter 9. Conversely, as the slider 4 slides upward along the slide groove 101 under the drive of the moving block 3, the inclined surface on the driving end side pushes the cutter 5 towards the driving end, causing the cutter 9 to move away from the rivet tube and reset. This transforms the up-and-down sliding of the slider 4 into the left-and-right horizontal sliding of the cutter 5, thus cutting the rivet tube. Cutting action; In addition, due to this oblique engagement, when the moving block 3 is not in contact with the slider 4, the slider 4 will not slide up or down relative to the cutter 5 under the resistance generated by the oblique engagement. This prevents the slider 4 from sliding down due to its own weight without the support of the moving block 3. If the slider slides down under its own weight, the cutting force generated by its own weight on the cutter 5 will be small and it will not be easy to cut the rivet. It will also cause the distance between it and the moving block 3 to be too large. In this way, the moving block 3 will not be able to push the slider 4 down within the effective stroke to complete the effective cutting of the rivet.

[0035] As attached Figure 1-8As shown, the handle 2 described in this application is provided with a drive gear 10, and the corresponding moving block 3 is provided with a first rack 303 that meshes with the drive gear 10. A second rack 103 that meshes with the drive gear 10 is also provided on the frame 2. The first rack 303 and the second rack 103 are symmetrically arranged radially along the drive gear 10 and are parallel to each other. With this structure, when the handle 2 is pressed down, the handle 2 drives the drive gear 10 to rotate, which is converted into a linear motion driving the moving block 3 downwards through meshing with the first rack 303 and the second rack 103. This allows for drilling; when the handle 2 is rotated in the reverse direction to reset, it engages with the rack to drive the moving block 3 upward in a linear motion, thus resetting the drilling assembly. This structure makes operation more effortless and provides sufficient drilling pressure. Furthermore, the meshing and driving mechanism of the two racks and the drive gear 10 results in the moving block 3 and the drilling assembly moving downward when the handle 2 is rotated consisting of two parts: the first part is the rotation of the drive gear 10 by the handle 2, which meshes with the moving block 3. The rotation of the drive gear 10 causes the moving block 3 to move downwards, which is the first part of the stroke, representing the actual downward movement of the moving block 3. Simultaneously, due to the meshing of the drive gear 10 and the second rack 103, the drive gear 10 moves downwards along the second rack 103, and this actual movement of the drive gear 10 also causes the moving block 3 to move downwards. Therefore, the actual stroke of the drive gear 10 is the second part of the stroke. For the first part of the stroke, assuming the drive gear 10 rotates by the same angle, the diameter of the drive gear determines the size of the first stroke. This allows the drive gear of this type of mating structure to... The diameter of the moving gear is set smaller than that of the driving gear in the prior art of single rack. The smaller gear diameter is compensated by the second stroke. Therefore, even if the gear diameter is smaller, the downward stroke of the moving block 3 and the punching assembly can still be the same as that of the prior art when the handle 2 is rotated by the same angle. Moreover, since the diameter of the gear is smaller than that of the prior art, the lever arm of the punching assembly is smaller than that of the prior art with the rotating shaft as the fulcrum. According to the principle of torque balance, with the same binding material as the punching object, the present application only needs to apply less force to the handle to complete the punching action, making the operation more labor-saving.

[0036] As attached Figure 1-3 and Figure 5As shown, at least two drive gears 10 are provided in this application, and the two drive gears 10 are symmetrically arranged on both sides along the thickness direction of the handle 2. The corresponding moving block 3 and the frame 2 are each provided with two racks that mesh with the two drive gears 10 respectively. Specifically, the drive gears 10 can be connected to the handle 2 through a square shaft, so that the drive gears 10 can be driven to rotate during the rotation of the handle 2. The drive gears 10 mesh with the first rack 303 and the second gear 201 to drive the moving block 3 to move downward to realize the drilling action. During the reset process, it moves upward to wait for the next drilling. The cooperation of the two sets of gears and racks can drive the drive gears 10 on both sides to push the moving block 3 to move up and down more evenly during the rotation of the handle 2, so as to realize the stable implementation of drilling and driving riveting cutting.

[0037] As attached Figure 8 As shown, this application also provides a binding machine, which includes the punching mechanism described above; the binding machine of this application also includes a base 12 and a riveting assembly, etc., with the frame 1 disposed on the base 12; the binding machine using the punching mechanism can simultaneously perform the cutting action of the rivet tube during the punching operation, thereby effectively improving the working efficiency of the whole machine.

[0038] The drilling mechanism described above in this application achieves abutment linkage between the moving block 3 and the slider 4 during the up-and-down movement of the drilling assembly. Specifically, when the lower end of the moving block 3 abuts against the slider 4, both move downwards simultaneously to perform drilling and cutting of the riveted pipe. Conversely, when the upper end of the moving block 3 abuts against the slider 4, both move upwards simultaneously to reset the drilling assembly and the pipe cutting assembly. The slider 4, in turn, uses an oblique sliding engagement with the cutting blade 5 to convert the vertical up-and-down sliding of the slider 4 into the horizontal left-and-right movement of the cutting blade 5 for cutting. Alternatively, by moving away from the rivet, the working linkage between the drilling component and the pipe cutting component is achieved. The cutting action of the rivet can be achieved simultaneously by driving the drilling component, which improves the working efficiency of the overall device. In addition, the cutting component 5 of this application always moves back and forth in the horizontal direction within the machine 1 during the process driven by the slider 4, in order to cut the rivet or reset and move away from the rivet. This horizontal movement cutting method makes the cut surface of the rivet flat. In the subsequent riveting process, the obtained riveting surface is more evenly laid out, which makes it less likely for the documents to scatter.

Claims

1. A piercing mechanism comprising a piercing assembly and a pipe cutting assembly arranged on a frame (1), characterized in that: The punching assembly includes a handle (2) and a moving block (3). The handle (2) is used to drive the moving block (3) to slide up and down within the frame (1) to punch holes. The cutting assembly includes a slider (4) that slides vertically within the frame (1) and a cutting blade (5) that slides obliquely with the slider (4). The moving block (3) and the slider (4) are linked together. When the handle (2) drives the moving block (3) to move down and abut against the slider (4), the slider (4) moves down to drive the cutting blade (5) to move horizontally to cut the tube. When the handle (2) resets and drives the moving block (3) to move up and abut against the slider (4), the slider (4) moves up to drive the cutting blade (5) to move horizontally in the opposite direction to reset.

2. The perforating mechanism of claim 1, wherein: The upper and lower ends of the slider (4) are respectively provided with a first abutting block (401) and a second abutting block (402) for corresponding abutting with the upper and lower ends of the moving block (3); when the first abutting block (401) abuts with the moving block (3), the moving block (3) drives the slider (4) to move upward to drive the cutting end of the cutter (5) away from the rivet tube; when the second abutting block (402) abuts with the moving block (3), the moving block (3) drives the slider (4) to move downward to drive the cutting end of the cutter (5) to cut the rivet tube.

3. The punching mechanism according to claim 2, characterized in that: The movable block (3) is used to abut against the first abutting block (401) and the second abutting block (402) at the first abutting position (301) and the second abutting position (302), respectively. The first abutting position (301) is platform-shaped, and the second abutting position (302) is a stepped groove recessed towards the upper end of the movable block (3).

4. The punching mechanism according to claim 3, characterized in that: The distance between the first abutment position (301) and the second abutment position (302) in the upper and lower directions is less than the distance between the second abutment block (501) and the second abutment block (402) in the upper and lower directions.

5. The punching mechanism according to claim 2, characterized in that: The frame (1) is provided with a vertically extending slide groove (101), the slider (4) slides vertically in the slide groove (101), and the slide groove (101) is provided with a limiting step surface (102), the limiting step surface (102) is used to abut against the first abutting block (401).

6. The punching mechanism according to claim 1, characterized in that: The cutter (5) is provided with an oblique through hole (502), and the corresponding slider (4) is provided with an oblique top block (403). The oblique top block (403) is slidably engaged in the oblique through hole (502). When the moving block (3) disengages from the slider (4), the slider (4) remains stationary relative to the cutter (5) due to the contact action between the oblique top block (403) and the oblique through hole (502).

7. The punching mechanism according to claim 1, characterized in that: The handle (2) is provided with a drive gear (10), the corresponding moving block (3) is provided with a first rack (301) that meshes with the drive gear (10), and the frame (1) is provided with a second rack (103) that meshes with the drive gear (10). The first rack (301) and the second rack (103) are arranged symmetrically along the radial direction of the drive gear (10) and are parallel to each other.

8. The punching mechanism according to claim 1, characterized in that: At least two drive gears (10) are provided, and the two drive gears (10) are symmetrically arranged on both sides along the thickness direction of the handle (2). The corresponding moving block (3) and the frame (1) are each provided with two racks that mesh with the two drive gears (10).

9. A binding machine, characterized in that: The binding machine includes a punching mechanism as described in any one of claims 1-8.

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