Binding machine punching structure

Abstract

The utility model provides a kind of punch structure of bookbinding machine, including mounting frame body, rotating mechanism, down piece, punch knife and switching adjusting part, rotating mechanism is rotatably set on mounting frame body;Down piece is movably set on mounting frame body, down piece is equipped with a plurality of through holes, through hole includes accommodating hole part and drive hole part;And down piece is further equipped with connecting hole, rotating mechanism is inserted into connecting hole;Punch knife is movably set on mounting frame body;Switching adjusting part passes accommodating hole part and is arranged on punch knife;Switching adjusting part is equipped with blocking part and allows part;By driving switching adjusting part action, so that blocking part is used for blocking switching adjusting part to enter drive hole part in accommodating hole part, or, so that allows part is used for allowing switching adjusting part to enter drive hole part in accommodating hole part, so that down piece is pushed in the process of moving downward to push switching adjusting part together with punch knife to move downward or avoid switching adjusting part by drive hole part.

Description

Technical Field

[0001] This utility model relates to the field of binding technology, and in particular to a punching structure for a binding machine. Background Technology

[0002] In the double-coil binding process, punching is a core step to complete the binding, and in practice, this function relies on a binding machine. Currently, equipment used for double-coil binding is mainly divided into two categories: professional binding machines and simple binding machines. However, both types of equipment have the following drawbacks: to meet the binding needs of products of different specifications, different punching positions need to be switched according to the product specifications. The internal structure of existing binding machines for switching punching positions is extremely complex. This complex structure directly leads to two problems: firstly, the equipment manufacturing cost is significantly increased, increasing the user's procurement cost; secondly, the function switching steps during operation are cumbersome, requiring operators to spend more time and effort to complete the switching, greatly reducing operational convenience. Furthermore, the complex structure also makes the overall size and dimensions of professional binding machines relatively large, not only occupying more space during use and storage but also making it difficult to achieve a compact and exquisite design, resulting in poor aesthetics and poor spatial adaptability to various usage scenarios. Therefore, it is necessary to provide at least one binding machine punching structure that is simple in structure and easy to switch punching positions. Utility Model Content

[0003] The purpose of this utility model is to provide a binding machine punching structure that is simple in structure and easy to switch punching positions.

[0004] To achieve the above objectives, this utility model provides a punching structure for a binding machine, including a mounting frame, a rotating mechanism, a pressing member, punching blades, and a switching and adjusting component. The rotating mechanism is rotatably mounted on the mounting frame. The pressing member is movably mounted on the mounting frame and has several through holes spaced apart along the punching direction. Each through hole includes a receiving hole and a driving hole that narrows upward from the upper end of the receiving hole. The pressing member also has a connecting hole into which the rotating mechanism is inserted. Rotation of the rotating mechanism pushes the pressing member to move up and down. Several punching blades are movably mounted on the mounting frame and arranged along the punching direction. The switching adjustment members are positioned and correspond one-to-one with the through holes; a plurality of the switching adjustment members are movably disposed on the mounting frame, and the switching adjustment members pass through the receiving holes and are disposed on the punching cutter in a corresponding manner; the switching adjustment members are provided with blocking parts and allowing parts along their movement direction; by driving the switching adjustment members to move, the blocking parts are used to block the switching adjustment members from entering the driving holes in the receiving holes, or the allowing parts are used to allow the switching adjustment members to enter the driving holes in the receiving holes, thereby causing the pressing member to push the switching adjustment members and the punching cutter downward during the downward movement, or causing the pressing member to avoid the switching adjustment members through the driving holes during the downward movement.

[0005] Preferably, the rotating mechanism includes a rotating drive handle, a rotating shaft, and a rotating connector. The rotating shaft is rotatably connected to the mounting frame, the rotating drive handle is fixedly connected to the rotating shaft, and the rotating connector is connected to the rotating shaft and inserted into the connecting hole.

[0006] Preferably, the binding machine punching structure further includes an elastic element, one end of which is connected to the pressing member, and the other end of which is connected to the mounting frame. The elastic element is used to apply an upward elastic force to the pressing member when the pressing member moves downward.

[0007] Preferably, the mounting frame is provided with a guide mounting seat located below the pressing member, and the guide mounting seat is provided with a plurality of guide holes corresponding one-to-one with the punching cutter, and the punching cutter is movably inserted into the guide holes; the elastic member is connected between the bottom of the pressing member and the guide mounting seat.

[0008] Preferably, the lower ends of the driving hole portions of at least two of the through holes are at different heights.

[0009] Preferably, the switching adjustment member is movably disposed on the mounting frame, and the blocking part and the allowing part are disposed on the switching adjustment member along the moving direction of the switching adjustment member; by pushing and pulling the switching adjustment member, the switching adjustment member moves and drives one of the blocking part and the allowing part to move into the receiving hole.

[0010] Preferably, both the blocking portion and the allowing portion are shafts provided on the switching adjustment member, and the blocking portion and the allowing portion are arranged coaxially on the switching adjustment member; the diameter of the blocking portion is less than or equal to the width of the receiving hole portion in the left-right direction, the diameter of the blocking portion is greater than the width of the driving hole portion in the left-right direction, and the diameter of the allowing portion is less than the width of the driving hole portion in the left-right direction.

[0011] Preferably, the switching adjustment member is rotatably disposed on the mounting frame, and the blocking part and the allowing part are disposed on the switching adjustment member along the rotation direction of the switching adjustment member and located within the receiving hole; by rotating the switching adjustment member, one of the blocking part and the allowing part is rotated to a horizontal position, so that during the downward movement of the pressing member, the switching adjustment member is blocked at the lower end of the driving hole by the blocking part or enters the driving hole by the allowing part.

[0012] Preferably, in the circumferential direction of the switching adjustment member, the blocking part is a protrusion protruding from the switching adjustment member, and the allowing part is a cross-section structure; when the switching adjustment member drives the blocking part to rotate to a horizontal position, the blocking part is used to prevent the switching adjustment member from entering the driving hole; when the switching adjustment member drives the allowing part to rotate to a horizontal position, the allowing part is used to allow the switching adjustment member to enter the driving hole.

[0013] Preferably, the binding machine punching structure further includes a binding base, the mounting frame is disposed on the upper part of the binding base, and there is a gap between the mounting frame and the binding base for inserting the workpiece, and the gap is located below the punching cutter.

[0014] Compared with the prior art, the punching structure of this utility model for a binding machine, by setting a rotating mechanism, a pressing member, a punching cutter, and a switching adjustment member on the mounting frame, cleverly designs the cooperation relationship between the through hole (including a receiving hole and a driving hole) of the pressing member and the switching adjustment member. By driving the switching adjustment member to move, the blocking part in the receiving hole prevents the switching adjustment member from entering the driving hole, or the allowing part in the receiving hole allows the switching adjustment member to enter the driving hole. When the blocking part of the switching adjustment member in the receiving hole prevents the switching adjustment member from entering the driving hole, in As the rotating mechanism pushes the lower pressing member downwards, the lower pressing member pushes the switching adjustment member and the punching knife connected to the switching adjustment member downwards through the lower end of the driving hole, thereby punching the workpiece. When the allowable part of the switching adjustment member is used in the receiving hole to allow the switching adjustment member to enter the driving hole, as the rotating mechanism pushes the lower pressing member downwards, the lower pressing member is fitted onto the allowable part of the switching adjustment member through the driving hole, so that the lower pressing member avoids the switching adjustment member through the driving hole during downward movement, thereby keeping the punching knife in its original position without punching. Therefore, the punching structure of this binding machine utilizes the switching of the blocking part and the allowable part to achieve selective action of the punching knife, eliminating the need for complex transmission or control structures, simplifying the overall structure, reducing the number of parts, and having the characteristics of simple structure, effectively reducing manufacturing costs. Furthermore, by simply driving the switching adjustment component, the corresponding punching tool can be quickly activated or deactivated through the engagement state of its blocking or allowing part with the through hole, thus completing the switching of the punching position. The entire process does not require cumbersome parameter adjustments or complex mechanical disassembly. The punching position switching operation is simple, which can significantly improve the switching efficiency and reduce the skill requirements for operators. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the punching structure of the binding machine of this utility model when the rotating mechanism is rotated and opened.

[0016] Figure 2 yes Figure 1 The diagram shows a partial structural diagram of the punching structure of the binding machine.

[0017] Figure 3 yes Figure 2 The diagram shows the structure of the binding machine punching structure after removing part of the structure.

[0018] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0019] Figure 5This is a three-dimensional structural diagram of the first embodiment of the punching structure of the binding machine of this utility model when the rotating mechanism rotates and presses down.

[0020] Figure 6 yes Figure 5 The diagram shows a partial structural diagram of the punching structure of the binding machine.

[0021] Figure 7 yes Figure 6 The diagram shows the structure of the binding machine punching structure after removing part of the structure.

[0022] Figure 8 yes Figure 7 Enlarged view of point B in the middle.

[0023] Figure 9 This is a partial structural diagram of the second embodiment of the binding machine punching structure of this utility model when the rotating mechanism is rotated and opened.

[0024] Figure 10 yes Figure 9 The diagram shows another angle of the punching structure of the binding machine.

[0025] Figure 11 yes Figure 10 The diagram shows the structure of the binding machine punching structure after removing part of the structure.

[0026] Figure 12 yes Figure 11 Enlarged view of point C in the middle.

[0027] Figure 13 This is a partial structural diagram of the second embodiment of the punching structure of the binding machine of this utility model when the rotating mechanism rotates and presses down.

[0028] Figure 14 yes Figure 13 Enlarged view of point D in the middle. Detailed Implementation

[0029] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0030] Please see Figures 1 to 9The binding machine punching structure 100 of this utility model includes a mounting frame 1, a rotating mechanism 2, a pressing member 3, punching blades 4, and a switching adjustment member 5. The rotating mechanism 2 is rotatably mounted on the mounting frame 1. The pressing member 3 is movably mounted on the mounting frame 1. The pressing member 3 has several through holes 31 arranged at intervals along the punching direction. Each through hole 31 includes a receiving hole portion 311 and a driving hole portion 312 that narrows upward from the upper end of the receiving hole portion 311. The pressing member 3 also has a connecting hole 32. The rotating mechanism 2 is inserted into the connecting hole 32. By rotating the rotating mechanism 2, the pressing member 3 is pushed up and down. Several punching blades 4 are movably mounted on the mounting frame 1. The punching blades 4 are arranged along the punching direction and are connected to the mounting frame 1. One through hole 31 corresponds to one; several switching adjustment members 5 are movably disposed on the mounting frame 1, and the switching adjustment members 5 pass through the receiving hole 311 and are disposed on the punching knife 4 in a one-to-one correspondence; the switching adjustment members 5 are provided with a blocking part 51 and a allowing part 52 along their moving direction; by driving the switching adjustment members 5 to move, the blocking part 51 is used to block the switching adjustment members 5 from entering the driving hole 312 in the receiving hole 311, or the allowing part 52 is used to allow the switching adjustment members 5 to enter the driving hole 312 in the receiving hole 311, thereby causing the pressing member 3 to push the switching adjustment members 5 together with the punching knife 4 downward during the downward movement, or causing the pressing member 3 to avoid the switching adjustment members 5 through the driving hole 312 during the downward movement. This structure achieves selective driving of the punching tool 4 through the cooperation of the "blocking part 51-allowing part 52" and the "accommodating hole part 311-driving hole part 312". It can complete the switching of punching at different positions without the need for complex transmission components, providing basic support for diversified punching needs. Please see Figures 1 to 6 The rotating mechanism 2 includes a rotating drive handle 21, a rotating shaft 22, and a rotating connector 23. The rotating shaft 22 is rotatably connected to the mounting frame 1. The rotating drive handle 21 is fixedly connected to the rotating shaft 22. The rotating connector 23 is connected to the rotating shaft 22 and inserted into the connecting hole 32. The operator can drive the rotating shaft 22 to rotate synchronously by rotating the drive handle 21. When the rotating connector 23 rotates with the rotating shaft 22, it can convert the rotational motion into a linear pushing force on the lower pressing part 3, realizing the up and down movement control of the lower pressing part 3. The overall transmission path is simple, the operation threshold is low, and it is suitable for all types of operators to quickly get started. Please see Figures 2 to 4The punching structure 100 of this invention also includes an elastic element 6. One end of the elastic element 6 is connected to the pressing member 3, and the other end is connected to the mounting frame 1. The elastic element 6 applies an upward elastic force to the pressing member 3 when it moves downward. When the rotating mechanism 2 removes its pushing force on the pressing member 3, the elastic element 6 can automatically reset the pressing member 3 using its own elastic potential energy, eliminating the need for manual lifting and resetting, reducing operation steps, and avoiding damage to components caused by uneven manual resetting force, thus improving the ease of use and service life of the equipment. Please see Figures 2 to 7 The mounting frame 1 is equipped with a guide mounting seat 11 located below the pressing member 3. The guide mounting seat 11 has several guide holes 111 corresponding one-to-one with the punching cutter 4. The punching cutter 4 can move up and down through the guide holes 111. The elastic member 6 is connected between the bottom of the pressing member 3 and the guide mounting seat 11. The guide holes 111 provide precise guidance for the up and down movement of the punching cutter 4, preventing the punching cutter 4 from deviating during movement and ensuring the accuracy of the punching position. At the same time, the guide mounting seat 11 provides a stable mounting support point for the elastic member 6, making the force on the elastic member 6 more uniform and the reset effect more stable, further ensuring the reliability of the equipment operation. Please see Figure 3 and Figure 4 The bottom of the pressing component 3 has a positioning hole 33. One end of the elastic element 6 is inserted into the positioning hole 33 and locked in place at the bottom of the pressing component 3. The other end of the elastic element 6 is inserted into the guide mounting seat 11. The positioning hole 33 can limit and fix one end of the elastic element 6, preventing the elastic element 6 from shifting laterally or falling off during the expansion and contraction process under force, ensuring that the elastic element 6 is always in the preset working position, ensuring the stability and timeliness of the resetting action of the pressing component 3, and avoiding equipment failure caused by misalignment of the elastic element 6. Please see Figure 4 and Figure 8 At least two through holes 31 have different lower end heights for their drive hole portions 312. The different lower ends of the drive hole portions 312 allow for different timing of contact between the corresponding switching adjustment element 5 and the drive hole portion 312, thereby enabling sequential punching actions of different punching knives 4. On one hand, this can meet the step-by-step punching requirements in special scenarios, such as progressive punching of multi-layered paper, reducing damage to the paper from a single punch, improving punching quality, and expanding the applicability of the equipment. On the other hand, different switching adjustment elements 5 and their corresponding punching knives 4 can be selected for punching based on different paper stack thicknesses. Specifically, all through holes 31 have the same length in the vertical direction, and both the driving hole portion 312 and the receiving hole portion 311 are non-circular elongated holes. However, in through holes 31 with different lower end heights of the driving hole portion 312, the receiving hole portion 311 and the driving hole portion 312 have different lengths in the vertical direction. By adjusting the lengths of the receiving hole portion 311 and the driving hole portion 312, the difference in the lower end height of the driving hole portion 312 is accommodated, ensuring the overall structural coordination of each through hole 31 and avoiding component jamming problems caused by size mismatch.

[0031] Please see Figure 2 and Figure 6 The mounting frame 1 is provided with a sliding hole 12, and the pressing component 3 can be inserted into the sliding hole 12 in a way that allows it to move up and down. The sliding hole 12 provides a stable guiding constraint for the up and down movement of the pressing component 3, preventing the pressing component 3 from swaying or tilting during movement, ensuring the matching accuracy between the pressing component 3 and components such as the punching cutter 4 and the switching adjustment component 5, avoiding punching position deviation or component collision damage caused by the offset of the pressing component 3, and improving the stability of equipment operation.

[0032] Please see Figure 1 and Figure 5 The mounting frame 1 is provided with several limiting holes 13 that correspond one-to-one with the switching adjustment component 5. The switching adjustment component 5 is disposed through the limiting hole 13, and the limiting hole 13 is used to limit the switching adjustment component 5.

[0033] Please see Figures 1 to 8 The switching adjustment member 5 is movably mounted on the mounting frame 1. The blocking part 51 and the allowing part 52 are mounted on the switching adjustment member 5 along its moving direction. By pushing and pulling the switching adjustment member 5, it moves, causing one of the blocking part 51 and the allowing part 52 to move into the receiving hole 311. The push-pull switching method is simple and intuitive. Operators only need to push and pull linearly to switch the blocking part 51 and the allowing part 52 of the switching adjustment member 5, without the need for complex parameter adjustments. This significantly reduces operational difficulty, shortens the time for switching punching positions, and improves work efficiency.

[0034] Specifically, both the blocking part 51 and the allowing part 52 are shafts provided on the switching adjustment member 5, and the blocking part 51 and the allowing part 52 are arranged coaxially on the switching adjustment member 5. The diameter of the blocking part 51 is less than or equal to the width of the receiving hole 311 in the left-right direction, and the diameter of the blocking part 51 is greater than the width of the driving hole 312 in the left-right direction. Therefore, the blocking part 51 of the switching adjustment member 5 can move within the receiving hole 311 of the through hole 31 but cannot enter the driving hole 312 of the through hole 31. The diameter of the allowing part 52 is less than the width of the driving hole 312 in the left-right direction. Therefore, the allowing part 52 of the switching adjustment member 5 can move within the receiving hole 311 and the driving hole 312 of the through hole 31, ensuring that the allowing part 52 can enter the driving hole 312 from the receiving hole 311. When the switching adjustment member 5 drives the blocking part 51 to rotate to a horizontal position, the blocking part 51 prevents the switching adjustment member 5 from entering the driving hole part 312. This allows the pressing member 3 to push the switching adjustment member 5 downward through the driving hole part 312 when the pressing member 3 moves downward, thereby driving the cutting knife corresponding to the switching adjustment member 5 to move downward for punching. When the switching adjustment member 5 drives the allowing part 52 to rotate to a horizontal position, the allowing part 52 allows the switching adjustment member 5 to enter the driving hole part 312. This allows the pressing member 3 to be sleeved on the switching adjustment member 5 through the driving hole part 312 when the pressing member 3 moves downward. At the same time, the pressing member 3 does not push the switching adjustment member 5 downward, thereby keeping the cutting knife corresponding to the switching adjustment member 5 in its original position without punching. The blocking part 51 and the allowing part 52 of the shaft structure are simple to manufacture and have low cost. They can achieve precise matching with the hole by means of diameter difference. No additional locking mechanism is required to stably realize the "blocking-allowing" function switching. This enables the cutting knife corresponding to the switching adjustment part 5 to switch between punching and non-punching functions, thereby improving the reliability of the structure and reducing the manufacturing cost. Please see Figures 9 to 14 The switching adjustment member 5 is rotatably mounted on the mounting frame 1. The blocking part 51 and the allowing part 52 are mounted on the switching adjustment member 5 along its rotation direction and located within the receiving hole 311. By rotating the switching adjustment member 5, one of the blocking part 51 and the allowing part 52 rotates to a horizontal position. This allows the switching adjustment member 5 to either be blocked at the lower end of the driving hole 312 by the blocking part 51 or enter the driving hole 312 by the allowing part 52 during the downward movement of the pressing member 3. By setting the blocking part 51 and the allowing part 52 of the switching adjustment member 5 as a rotating switching structure, the rotation operation is flexible. The "blocking-allowing" function can be switched via the switching adjustment member 5, thereby enabling the corresponding cutting knife to switch between punching and non-punching functions, further simplifying the external structure of the equipment and improving operational convenience. Specifically, in the circumferential direction of the switching adjustment member 5, the blocking part 51 is a protrusion protruding from the switching adjustment member 5, while the allowing part 52 has a cross-sectional structure. When the switching adjustment member 5 drives the blocking part 51 to rotate to a horizontal position, the protruding blocking part 51 is used to prevent the switching adjustment member 5 from entering the driving hole 312, so that when the pressing member 3 moves downward, the pressing member 3 can push the switching adjustment member 5 downward through the driving hole 312, thereby driving the corresponding cutting knife of the switching adjustment member 5 to move downward for punching. When the switching adjustment member 5 drives the allowing part 52 to rotate to a horizontal position, the cross-sectional allowing part 52 allows the switching adjustment member 5 to enter the driving hole 312, so that when the pressing member 3 moves downward, the pressing member 3 can be sleeved on the switching adjustment member 5 through the driving hole 312, while the pressing member 3 does not push the switching adjustment member 5 downward, thereby keeping the corresponding cutting knife of the switching adjustment member 5 in its original position without punching. The design of the protrusion and the faceted structure utilizes simple geometric differences to achieve functional switching without the need for complex mechanical structures. Furthermore, the protrusion's blocking part 51 has a large force-bearing area, making it less prone to damage during the pushing process. The faceted structure's allowable part 52 can reduce friction with the drive hole part 312, reduce component wear, and extend the equipment's service life. More specifically, in the circumferential direction of the switching adjustment member 5, there are two blocking parts 51 and two allowing parts 52, which are arranged alternately. The two blocking parts 51 are arranged symmetrically, and the two allowing parts 52 are also arranged symmetrically. The length distance between the two blocking parts 51 is less than or equal to the width of the receiving hole 311 in the left-right direction, and the length distance between the two blocking parts 51 is greater than the width of the driving hole 312 in the left-right direction. Therefore, when the switching adjustment member 5 drives the blocking part 51 to rotate to the horizontal position, the blocking part 51 of the switching adjustment member 5 can move in the receiving hole 311 of the through hole 31 but cannot enter the driving hole 312 of the through hole 31. The length between the two allowing parts 52 is less than the width of the driving hole 312 in the left-right direction. Therefore, the allowing part 52 of the switching adjustment member 5 can move in the receiving hole 311 and the driving hole 312 of the through hole 31, ensuring that the allowing part 52 can enter the driving hole 312 from the receiving hole 311. The symmetrically arranged blocking part 51 and allowing part 52 can make the force more even when the switching adjustment part 5 rotates, avoiding the deformation of the part caused by the force on one side; at the same time, the symmetrical structure ensures that the switching adjustment part 5 can stably switch functions whether it rotates clockwise or counterclockwise, improving the operational flexibility and structural stability. Please see Figure 1 and Figure 5The binding machine punching structure 100 of this utility model also includes a binding base 7. A mounting frame 1 is disposed on the upper part of the binding base 7, and a gap 71 for inserting a workpiece is provided between the mounting frame 1 and the binding base 7, with the gap 71 located below the punching cutter 4. The binding base 7 provides a stable support foundation for the entire device, preventing shaking during operation. After the workpiece is inserted into the gap 71, it can be stably positioned below the punching cutter 4, ensuring precise alignment between the punching position and the preset position of the workpiece, reducing punching deviation caused by workpiece displacement, and improving binding quality. Specifically, the gap 71 is formed between the guide mounting seat 11 and the binding base 7. The guide mounting seat 11, as the upper boundary of the gap 71, can limit the upper end of the workpiece. Together with the binding base 7 supporting the lower end of the workpiece, it forms a clamping mechanism for the workpiece, further preventing the workpiece from moving up and down during the punching process. At the same time, the bottom of the guide mounting seat 11 can serve as a positioning reference for the workpiece, ensuring the consistency of the punching position of different batches of workpieces, and improving production efficiency and product qualification rate. Combination Figures 1 to 14 The specific working principle of the punching structure 100 of this utility model is as follows: When performing double-coil binding punching, first insert the workpiece to be punched (such as paper, booklet, etc.) into the gap 71 between the guide mounting seat 11 and the binding base 7, so that the binding edge of the workpiece is aligned with the bottom of the punching knife 4, and the workpiece is positioned. According to the preset punching position requirements, select the corresponding operation mode of the switching adjustment member 5: If a push-pull type switching adjustment member 5 is used, the blocking part 51 on the switching adjustment member 5 corresponding to the target punching cutter 4 is moved into the receiving hole 311 by linear push-pull, and the allowing part 52 on the switching adjustment member 5 corresponding to the non-target punching cutter 4 is moved into the receiving hole 311; if a rotation type switching adjustment member 5 is used, the blocking part 51 on the switching adjustment member 5 corresponding to the target punching cutter 4 is rotated to a horizontal position by rotation, and the allowing part 52 on the switching adjustment member 5 corresponding to the non-target punching cutter 4 is rotated to a horizontal position. Subsequently, the operator drives the rotation drive handle 21 of the rotation mechanism 2 to rotate, causing the rotation shaft 22 and the rotation connector 23 to rotate synchronously. During the rotation, the rotation connector 23 pushes the pressing member 3 downward along the sliding hole 12 of the mounting frame 1. When the pressing member 3 moves downward, for the switching adjustment member 5 corresponding to the target punch 4: since the blocking part 51 cannot enter the driving hole 312, the pressing member 3 pushes the blocking part 51 through the end of the driving hole 312, thereby driving the switching adjustment member 5 and the punch 4 to move downward together. The punch 4 moves downward along the guide hole 111 of the guide mounting seat 11 to punch the workpiece. For the switching adjustment member 5 corresponding to the non-target punch 4: since the allowing part 52 can enter the driving hole 312, when the pressing member 3 moves downward, the allowing part 52 slides upward along the driving hole 312. The pressing member 3 avoids the switching adjustment member 5 through the driving hole 312, and the corresponding punch 4 remains stationary and does not punch. After punching is completed, the operator releases the drive handle 21, and the pushing force of the rotating mechanism 2 on the lower pressing member 3 disappears. At this time, the elastic member 6, relying on its own elastic potential energy, pushes the lower pressing member 3 upward along the sliding hole 12 to reset. During the reset process, the lower pressing member 3 drives the switching adjustment member 5 and the punching cutter 4 to reset upward synchronously, returning to the initial working position, completing a single punching cycle. If the next punching is required, it is only necessary to repeat the above steps of workpiece positioning, switching adjustment member 5 adjustment, and rotating drive handle 21.

[0035] In summary, the binding machine punching structure 100 of this utility model, by setting a rotating mechanism 2, a pressing member 3, a punching cutter 4, and a switching adjustment member 5 on the mounting frame 1, and by cleverly designing the cooperation relationship between the through hole 31 (including the receiving hole portion 311 and the driving hole portion 312) of the pressing member 3 and the switching adjustment member 5, drives the switching adjustment member 5 to move, so that the blocking part 51 in the receiving hole portion 311 prevents the switching adjustment member 5 from entering the driving hole portion 312, or so that the allowing part 52 in the receiving hole portion 311 allows the switching adjustment member 5 to enter the driving hole portion 312; when the blocking part 51 of the switching adjustment member 5 in the receiving hole portion 311 prevents the switching adjustment member 5 from entering the driving hole portion 312, the switching adjustment member 5 can achieve the following: During the downward movement of the workpiece, as the rotating mechanism 2 rotates and pushes the pressing member 3, the pressing member 3 pushes the switching adjustment member 5, along with the punching knife 4 connected to the switching adjustment member 5, downward through the lower end of the driving hole 312, thereby punching the workpiece. When the allowable part 52 of the switching adjustment member 5 is in the receiving hole 311 to allow the switching adjustment member 5 to enter the driving hole 312, during the downward movement of the pressing member 3, the pressing member 3 is fitted onto the allowable part 52 of the switching adjustment member 5 through the driving hole 312, so that the pressing member 3 avoids the switching adjustment member 5 through the driving hole 312 during its downward movement, thus keeping the punching knife 4 in its original position without punching. Therefore, the punching structure of this binding machine utilizes the switching of the blocking part 51 and the allowable part 52 to achieve selective action of the punching knife 4, eliminating the need for complex transmission or control structures, simplifying the overall structure, reducing the number of parts, and having the characteristics of simple structure, while effectively reducing manufacturing costs. Furthermore, by simply driving the switching adjustment component 5 to operate, the corresponding punching tool 4 can be quickly activated or deactivated through the cooperation state of its blocking part 51 or allowing part 52 with the through hole 31, thus completing the switching of the punching position. The entire process does not require cumbersome parameter adjustments or complex mechanical disassembly. The punching position switching operation is simple, which can significantly improve the switching efficiency and reduce the skill requirements for operators.

[0036] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A punching structure for a binding machine, characterized in that, include: Mounting frame; A rotating mechanism, which is rotatably mounted on the mounting frame; A pressing member is movably mounted on the mounting frame. The pressing member has a plurality of through holes arranged at intervals along the punching direction. Each through hole includes a receiving hole and a driving hole that narrows upward from the upper end of the receiving hole. The pressing member also has a connecting hole. A rotating mechanism is inserted into the connecting hole and rotates to push the pressing member to move up and down. A punching cutter, a plurality of punching cutters are respectively movably mounted on the mounting frame, and the punching cutters are arranged along the punching arrangement direction and correspond one-to-one with the through holes; A number of switching adjustment components are movably disposed on the mounting frame, and each switching adjustment component passes through the receiving hole and is disposed on the punching cutter in a corresponding manner. The switching adjustment component is provided with a blocking part and a allowing part along its direction of movement. By driving the switching adjustment component to move, the blocking part is used to prevent the switching adjustment component from entering the driving hole in the receiving hole, or the allowing part is used to allow the switching adjustment component to enter the driving hole in the receiving hole. This causes the pressing member to push the switching adjustment component and the punching cutter downward during downward movement, or causes the pressing member to pass through the driving hole to avoid the switching adjustment component during downward movement.

2. The punching structure for a binding machine according to claim 1, characterized in that, The rotating mechanism includes a rotating drive handle, a rotating shaft, and a rotating connector. The rotating shaft is rotatably connected to the mounting frame. The rotating drive handle is fixedly connected to the rotating shaft. The rotating connector is connected to the rotating shaft and inserted into the connecting hole.

3. The punching structure for a binding machine according to claim 1, characterized in that, It also includes an elastic element, one end of which is connected to the pressing member and the other end of which is connected to the mounting frame. The elastic element is used to apply an upward elastic force to the pressing member when the pressing member moves downward.

4. The binding machine punching structure according to claim 3, characterized in that, The mounting frame is provided with a guide mounting seat located below the pressing member. The guide mounting seat is provided with a plurality of guide holes corresponding one-to-one with the punching cutter. The punching cutter can be moved up and down through the guide holes. The elastic member is connected between the bottom of the pressing member and the guide mounting seat.

5. The punching structure for a binding machine according to claim 1, characterized in that, The lower ends of the driving hole portions of at least two of the through holes are at different heights.

6. The punching structure for a binding machine according to claim 1, characterized in that, The switching adjustment member is movably disposed on the mounting frame, and the blocking part and the allowing part are disposed on the switching adjustment member along the moving direction of the switching adjustment member; by pushing and pulling the switching adjustment member, the switching adjustment member is moved and one of the blocking part and the allowing part is moved into the receiving hole.

7. The binding machine punching structure according to claim 6, characterized in that, Both the blocking part and the allowing part are shafts provided on the switching adjustment member, and the blocking part and the allowing part are arranged coaxially on the switching adjustment member; the diameter of the blocking part is less than or equal to the width of the receiving hole in the left-right direction, the diameter of the blocking part is greater than the width of the driving hole in the left-right direction, and the diameter of the allowing part is less than the width of the driving hole in the left-right direction.

8. The punching structure for a binding machine according to claim 1, characterized in that, The switching adjustment member is rotatably mounted on the mounting frame. The blocking part and the allowing part are disposed on the switching adjustment member along the rotation direction of the switching adjustment member and located within the receiving hole. By rotating the switching adjustment member, one of the blocking part and the allowing part is rotated to a horizontal position, so that during the downward movement of the pressing member, the switching adjustment member is blocked at the lower end of the driving hole by the blocking part or enters the driving hole by the allowing part.

9. The punching structure for a binding machine according to claim 8, characterized in that, In the circumferential direction of the switching adjustment member, the blocking part is a protrusion protruding from the switching adjustment member, while the allowing part is a cross-section structure; when the switching adjustment member drives the blocking part to rotate to a horizontal position, the blocking part is used to prevent the switching adjustment member from entering the driving hole; when the switching adjustment member drives the allowing part to rotate to a horizontal position, the allowing part is used to allow the switching adjustment member to enter the driving hole.

10. The punching structure for a binding machine according to claim 1, characterized in that, It also includes a binding base, the mounting frame is disposed on the upper part of the binding base, and there is a gap between the mounting frame and the binding base for inserting the workpiece, and the gap is located below the punching tool.

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