Sliding type punching device

Abstract

The invention relates to a sliding type punching device, and relates to the technical field of machining, the sliding type punching device comprises a stable floor, a sliding guide mechanism, a punching unit and a station adaptation mechanism, the sliding guide mechanism is arranged on the stable floor, the punching unit is arranged on the sliding guide mechanism, and the station adaptation mechanism is arranged on the stable floor. The station adaptation mechanism is arranged below the sliding guide mechanism, the stability of the whole device can be guaranteed by arranging the stabilizing floor, the sliding guide mechanism can enable the punching unit to slide accurately under the guiding effect of the sliding guide mechanism, the limiting protection effect is achieved, and the station adaptation mechanism can adapt to punching stations of flanges of different specifications. The problems that in a traditional flange punching device, the sliding precision of a punch is insufficient, and the adaptability of multi-specification flange punching stations is weak are solved.

Description

Technical Field

[0001] This application relates to the field of machining technology, and in particular to a sliding punching device. Background Technology

[0002] In the field of machining, flanges, as crucial components connecting pipes, equipment, and other parts, have a vital impact on the performance of the entire system due to their machining quality and efficiency. With continuous industrial development, the demand for flanges is increasing, along with the requirements for their machining precision and versatility. Flange punching is one of the key processes in flange manufacturing; good punching technology can improve the connection stability and sealing performance of flanges, thereby enhancing the reliability and safety of the entire mechanical system. Therefore, the performance of flange punching equipment directly affects the machining quality and production efficiency of flanges, and its technological development is of great significance in promoting the progress of the machining industry.

[0003] In traditional flange punching operations, simple sliding structures are typically used to move the punch and perform the punching operation. For example, the punch is directly mounted on a simple guide rail, and the punch is driven manually or by a simple power device to slide along the guide rail to perform the punching. Adapting the punching station to different flange sizes is often achieved manually by changing different dies or adjusting the punching position, which is a rather cumbersome process. Regarding safety, the operating area is mostly equipped with only simple guardrails, and some equipment lacks dedicated safety measures altogether.

[0004] However, traditional flange punching equipment has many drawbacks. Among them, insufficient punch sliding accuracy leads to large deviations in punching position, affecting the processing quality of flanges; the poor adaptability of the multi-specification flange punching station means that a lot of time needs to be spent adjusting and changing molds when processing flanges of different specifications, reducing production efficiency; and the equipment's operating area has poor safety protection, which can easily pose safety hazards to operators.

[0005] Therefore, in view of the above situation, there is an urgent need to develop a sliding punching device to overcome the shortcomings in current practical applications. Summary of the Invention

[0006] To address the shortcomings of the aforementioned technology, this application provides a sliding punching device.

[0007] The sliding punching device provided in this application adopts the following technical solution: A sliding punching device includes a stable floor, a sliding guide mechanism, a punching unit, and a workstation adapter mechanism. The sliding guide mechanism is disposed on the stable floor, the punching unit is disposed on the sliding guide mechanism, and the workstation adapter mechanism is disposed below the sliding guide mechanism.

[0008] Beneficial effects: Setting up a stable floor ensures the overall stability of the device; the sliding guide mechanism allows the punching unit to slide precisely under its guidance; and the station adaptation mechanism can adapt to punching stations of different flange specifications, solving the problems of insufficient punch sliding accuracy and weak adaptability of punching stations for multiple flange specifications in traditional flange punching devices.

[0009] In one optional embodiment, the sliding guide mechanism includes guide columns, which are fixedly mounted on the stable floor. Multiple guide columns are symmetrically arranged in two groups. Each group of guide columns is fitted with a movable plate. A limit plate is provided at the top of each guide column. A buffer spring is provided between the limit plate and the movable plate. A bearing plate is provided between the two movable plates. Lifting components are symmetrically arranged between the two groups of guide columns. The telescopic end of the lifting component is fixedly connected to the bottom of the movable plate. A punching unit is provided at the bottom center of the movable plate.

[0010] Beneficial effects: The guide columns are fixed to a stable floor and arranged symmetrically in two sets, each set with a movable plate, which can provide precise guidance for the punch to slide, solving the problem of insufficient punch sliding accuracy in traditional devices; the limit plate can prevent the movable plate from falling off the guide column, and the buffer spring can buffer the impact force when the movable plate rises; the bearing plate connects the two movable plates, which facilitates the linkage of the overall structure; the telescopic end of the lifting component is fixedly connected to the bottom of the movable plate, which can effectively drive the movable plate to drive the punching unit to rise and fall.

[0011] In one optional embodiment, the punching unit includes a punch column disposed at the bottom of the support plate, a punch head disposed at the bottom of the punch column, a pressure sleeve slidably sleeved on the punch head, and a return spring disposed between the pressure sleeve and the punch column.

[0012] Beneficial effects: The punch column is set at the bottom of the bearing plate, which can make the punching unit installed stably. The punch is used to realize the punching function. The mounting sleeve is slidably sleeved on the punch and a return spring is set between it and the punch column, which can ensure that the punch automatically returns to its original position after punching, improve the sliding accuracy of the punch, and solve the problem of insufficient sliding accuracy of the punch in traditional flange punching devices.

[0013] In one optional embodiment, the workstation adaptation mechanism includes support columns, a plurality of support columns are fixedly mounted on the stable floor, a support platform is fixedly mounted on the top of the plurality of support columns, a rotating platform is rotatably mounted on the support platform, a plurality of holes and slots are provided circumferentially on the rotating platform, a waste hole is provided on the support platform corresponding to the holes and slots, a rotating groove is provided at the center of the support platform, a rotating ring is provided at the bottom of the rotating platform, the rotating ring is inserted into the rotating groove and rotates, a plurality of limiting blocks are provided circumferentially on the rotating platform, a rod is horizontally mounted in the limiting block, and one end of the rod is provided with an arc plate that abuts against the inner wall of the flange.

[0014] Beneficial effects: The support column is fixed on a stable floor and supports the support platform, providing a stable foundation for the entire workstation's adaptability mechanism; the rotating platform on the support platform can rotate flexibly, and the multiple circumferentially arranged slots can adapt to the punching requirements of flanges of different specifications, improving the adaptability of the multi-specification flange punching workstation; the waste holes corresponding to the slots on the support platform facilitate waste discharge, ensuring the continuity of punching work; the rotating platform rotates by inserting a rotating ring at the bottom into the rotating slot in the center of the support platform, making the rotation more stable; the circumferentially limiting blocks and the internal insertion rods of the rotating platform, with the arc plate at one end of the insertion rods, can be used for flange positioning and fixing, further improving punching accuracy.

[0015] In one optional embodiment, a rod is horizontally inserted into the limiting block, and an inclined block is provided at the other end of the rod. A first clearance hole and a second clearance hole are correspondingly opened at the center of the support platform and the rotating platform. A telescopic member is provided below the first clearance hole, and a cone head is rotatably provided at the telescopic end of the telescopic member. The cone head abuts against the plurality of inclined blocks.

[0016] Beneficial effects: The stable floor provides stable support for the entire device; the sliding guide mechanism, composed of guide columns, moving plates, buffer springs, and lifting components, ensures high-precision sliding of the punching unit; the punching unit, consisting of punching columns, punch heads, mounting sleeves, and return springs, enables punching operations; the station adaptation mechanism, composed of support columns, support platforms, rotating platforms, slots, and waste holes, is suitable for punching flanges of various specifications; furthermore, the inclusion of insert rods, inclined blocks, telescopic components, and cones within the limit blocks allows the insert rod to move horizontally when the telescopic component extends or retracts the cone, through contact with the inclined block, thereby precisely limiting and unlocking the rotating platform. This facilitates switching between different punching stations and further improves the device's adaptability to punching flanges of various specifications.

[0017] In one optional embodiment, the outer side of the rotating platform is provided with toothed grooves, the outer side of the support platform is provided with a placement platform, the placement platform is provided with a driving member, and the driving end of the driving member is provided with a spur gear, which meshes with the toothed grooves provided on the outer side of the rotating platform.

[0018] Beneficial effects: By using a drive component to rotate a spur gear, and utilizing the meshing transmission between the spur gear and the outer teeth of the rotating table, the rotating table can achieve smooth and precise rotation, making it easy to rotate different holes and slots to the designated position for punching operations, thereby improving the adaptability of the device to punching stations of different flange specifications.

[0019] In one optional embodiment, a protective ring is provided on the outer side of the support platform, and a protective groove is provided inside the protective ring. A protective cover is provided on the outer side of the driving component, and the protective ring is fixedly connected to the protective cover.

[0020] Beneficial effects: The protective ring and protective cover can protect the driving components, improve the safety of the equipment operating area, and solve the problem of poor safety protection in the operating area of ​​traditional flange punching devices; combined with the stable floor, sliding guide mechanism, punching unit, and station adaptation mechanism in the overall solution, the sliding guide mechanism can improve the sliding accuracy of the punch, and the station adaptation mechanism can realize the adaptation of punching stations for multiple specifications of flanges, solving the problems of insufficient sliding accuracy of the punch and weak adaptability of punching stations for multiple specifications of flanges in traditional flange punching devices.

[0021] In one alternative embodiment, the diameter of the punch is set to correspond to the diameter of the slot.

[0022] Beneficial effects: The punch and slot diameter are set to correspond, which allows the punch to be accurately aligned with the slot for punching, solving the problem of insufficient punch sliding accuracy in traditional flange punching devices. At the same time, it ensures that it can be adapted to the corresponding work station when punching flanges of different specifications, improving the adaptability of punching work stations for multiple specifications of flanges.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. By using a sliding guide mechanism, the sliding accuracy of the punch is improved, the problem of large punching position deviation is solved, and the flange processing quality is improved; 2. The station adaptation mechanism enhances the adaptability of the punching station for multiple flange specifications, reduces the time for adjusting and changing molds when processing flanges of different specifications, and improves production efficiency; 3. The installation of protective rings and protective covers enhances the safety of the equipment operating area and reduces safety hazards for operators. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure provided in the embodiments of this application; Figure 2 This is a cross-sectional structural diagram of the workstation adapter mechanism provided in the embodiments of this application; Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0025] Explanation of reference numerals in the attached drawings: 1. Stabilized floor; 2. Sliding guide mechanism; 21. Guide column; 22. Moving plate; 23. Limiting plate; 24. Buffer spring; 25. Bearing plate; 26. Lifting component; 3. Punching unit; 31. Punching column; 32. Punch head; 33. Pressure sleeve; 34. Return spring; 4. Station adaptation mechanism; 41. Support column; 42. Support platform; 43. Rotating platform; 44. Hole slot; 45. Waste hole; 46. Rotating groove; 47. Rotating ring; 48. Limiting block; 49. Insert rod; 50. Arc plate; 51. Inclined block; 52. First clearance hole; 53. Second clearance hole; 54. Telescopic component; 55. Cone head; 56. Toothed pattern; 57. Placement platform; 58. Driving component; 59. Spur gear; 60. Protective ring; 61. Protective groove; 62. Protective cover. Detailed Implementation

[0026] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0030] The present invention provides the following embodiments: This application discloses a sliding punching device, referring to... Figures 1-3The device includes a stable floor 1, a sliding guide mechanism 2, a punching unit 3, and a station adaptation mechanism 4. The sliding guide mechanism 2 is mounted on the stable floor 1, and the punching unit 3 is mounted on the sliding guide mechanism 2, allowing for stable sliding motion under its guidance. The station adaptation mechanism 4 is located below the stable floor 1 and is used to adapt to punching stations for flanges of different specifications. This configuration makes the entire device more stable and efficient during the punching process, effectively solving the problems of insufficient sliding accuracy of the punch 32 and weak adaptability to punching stations for multiple flange specifications in traditional flange punching devices.

[0031] Specifically, the sliding guide mechanism 2 includes guide columns 21, which are fixedly mounted on the stable floor 1, serving as support and guides. Multiple guide columns 21 are symmetrically arranged in two groups, ensuring the stability and balance of the device. Each group of guide columns 21 is fitted with a movable plate 22, which can slide up and down along the guide column 21. A limit plate 23 is provided at the top of the guide column 21, preventing the movable plate 22 from sliding off the guide column 21 and providing a limiting protection function. A buffer spring 24 is provided between the limit plate 23 and the movable plate 22, which buffers and dampens shocks during the rising and falling of the movable plate 22, reducing impact damage to the device. For example, the buffer spring 24 can be a helical spring, which has good elasticity and buffering performance; other types of springs, such as disc springs, can also be used instead. A support plate 25 is provided between the two movable plates 22, supporting the punching unit 3 and ensuring its stable installation on the sliding guide mechanism 2. A lifting element 26 is symmetrically arranged between two sets of guide columns 21. The lifting element 26 can be a hydraulic cylinder or an electric push rod, etc. The telescopic end of the lifting element 26 is fixedly connected to the bottom of the moving plate 22. The telescopic movement of the lifting element 26 drives the moving plate 22 to move up and down along the guide columns 21. When the lifting element 26 extends, the moving plate 22 rises; when the lifting element 26 retracts, the moving plate 22 descends. A punching unit 3 is provided at the bottom center of the moving plate 22. As the moving plate 22 moves up and down, the punching unit 3 also moves up and down to realize the punching operation.

[0032] The components of the sliding guide mechanism 2 work together to form a stable guiding system. The guide post 21 provides an accurate sliding path for the moving plate 22, ensuring the sliding accuracy of the punching unit 3; the limiting plate 23 and the buffer spring 24 improve the safety and reliability of the device; and the lifting component 26 provides power for the movement of the moving plate 22. Together, they enable the punching unit 3 to rise and fall stably under precise guidance, improving the accuracy and quality of punching.

[0033] Specifically, the punching unit 3 includes a punch 31, which is located at the bottom of the support plate 25 and fixedly connected to it. A punch 32 is located at the bottom of the punch 31, used for punching the flange. A mounting sleeve is slidably fitted onto the punch 32, and a return spring 34 is positioned between the mounting sleeve and the punch 31. The function of the return spring 34 is to return the punch 32 to its initial position after the punching action is completed. For example, the return spring 34 can be a cylindrical spring, which has a simple structure and low cost; other types of springs, such as rectangular springs, can also be used instead. The mounting sleeve and the punch 31 are connected by a sliding fit, ensuring that the punch 32 can extend and retract flexibly within the mounting sleeve. During the punching process, the punch 32 is subjected to downward pressure, overcoming the elastic force of the return spring 34 to move downwards for punching; after punching is completed, the elastic force of the return spring 34 causes the punch 32 to return upwards.

[0034] The components that make up the punching unit 3 work together to achieve a highly efficient punching function. The punch 31 provides support and power transmission for the punch 32; the punch 32 directly contacts the flange to perform punching; the mounting sleeve ensures the stability of the punch 32's movement; and the return spring 34 enables the punch 32 to return to its original position quickly and accurately, thus improving the punching efficiency.

[0035] Specifically, the workstation adaptation mechanism 4 includes support columns 41, which are fixedly mounted on the stable floor 1 to support the entire workstation adaptation mechanism 4. A support platform 42 is fixedly mounted on the top of each support column 41, serving to support and bear the load of the rotating platform 43. The rotating platform 43 is rotatably mounted on the support platform 42, and can rotate around its central axis. The rotating platform 43 has multiple circumferential slots 44, which can accommodate different flange punching requirements. Waste holes 45 are provided on the support platform 42 corresponding to the slots 44, used to discharge waste generated during the punching process. A rotating groove 46 is formed at the center of the support platform 42, and a rotating ring 47 is provided at the bottom of the rotating platform 43. The rotating ring 47 is inserted into the rotating groove 46 and rotates within it. This structure allows the rotating platform 43 to rotate stably on the support platform 42. The rotating table 43 is circumferentially provided with multiple limit blocks 48, and a horizontal insertion rod 49 is provided inside the limit block 48. An arc plate 50 is provided at one end of the insertion rod 49. The arc plate 50 is used to clamp flanges of different specifications to achieve the positioning and fixing of the flanges.

[0036] A horizontally inserted rod 49 is also provided within the limiting block 48, and an inclined block 51 is provided at the other end of the rod 49. A first clearance hole 52 and a second clearance hole 53 are correspondingly provided at the center of the support platform 42 and the rotating platform 43. A telescopic component 54 is provided below the first clearance hole 52; the telescopic component 54 can be a cylinder or an electric telescopic rod, etc. A cone 55 is rotatably provided at the telescopic end of the telescopic component 54, and the cone 55 abuts against multiple inclined blocks 51. When the telescopic component 54 extends, the cone 55 moves upward, pressing against the inclined blocks 51, causing the rod 49 to move outward along with the arc plate 50, thus loosening the flange; when the telescopic component 54 retracts, the cone 55 moves downward, and the inclined blocks 51, under their own restoring force, drive the rod 49 and the arc plate 50 to move inward, tightening the flange.

[0037] The outer side of the rotating platform 43 is provided with toothed grooves 56, and the outer side of the support platform 42 is provided with a placement platform 57. A driving component 58, which can be a motor, is mounted on the placement platform 57. A spur gear 59 is provided at the driving end of the driving component 58, and the spur gear 59 meshes with the toothed grooves 56 on the outer side of the rotating platform 43. The driving component 58 drives the spur gear 59 to rotate, thereby driving the rotating platform 43 to rotate, realizing the switching of different slots 44 to adapt to flanges of different specifications.

[0038] A protective ring 60 is provided on the outer side of the support platform 42, and a protective groove 61 is provided inside the protective ring 60. A protective cover 62 is provided on the outer side of the drive component 58, and the protective ring 60 and the protective cover 62 are fixedly connected. The protective ring 60 and the protective cover 62 can prevent operators from accidentally contacting the drive component 58 and rotating parts, thereby improving the safety of the equipment operating area.

[0039] The workstation adaptation mechanism 4 achieves adaptation to flanges of different specifications through the coordinated work of multiple components. The support column 41 and support platform 42 provide a stable support structure; the rotation of the rotating platform 43 and the setting of the slot 44 can meet the punching requirements of flanges of different specifications; the combination of the limiting block 48, the insertion rod 49, the arc plate 50, the inclined block 51, the telescopic component 54 and the cone head 55 realizes the rapid positioning and fixing of the flange; the cooperation of the driving component 58, the spur gear 59 and the tooth pattern 56 realizes the accurate rotation of the rotating platform 43; the protective ring 60 and the protective cover 62 improve the safety of the equipment.

[0040] In addition, the diameter of the punch 32 is set to correspond to the diameter of the slot 44, so that the punch 32 can accurately enter the slot 44 during the punching process, ensuring the accuracy and quality of punching.

[0041] The implementation principle of this embodiment is as follows: The sliding guide mechanism 2, through the coordinated action of the guide column 21, the moving plate 22, the limiting plate 23, the buffer spring 24, and the lifting component 26, provides precise guidance and stable lifting power for the punching unit 3, improving the sliding accuracy of the punch 32. The punch column 31, the punch 32, the mounting sleeve, and the return spring 34 in the punching unit 3 cooperate with each other to achieve efficient punching and reset functions. The workstation adaptation mechanism 4, through the coordinated work of components such as the support column 41, the support platform 42, the rotating platform 43, the slot 44, the limiting block 48, the insertion rod 49, the arc plate 50, the inclined block 51, the telescopic component 54, the cone head 55, the driving component 58, the spur gear 59, the protective ring 60, and the protective cover 62, achieves rapid adaptation and positioning of flanges of different specifications, and improves the safety protection of the equipment operating area. Compared with traditional flange punching devices, this embodiment solves the problems of insufficient sliding accuracy of punch 32, weak adaptability of punching stations for multiple flange specifications, and poor safety protection of the equipment operation area, thereby improving the processing quality and production efficiency of flanges and reducing the safety risks to operators.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A sliding punching device, characterized in that: It includes a stable floor (1), a sliding guide mechanism (2), a punching unit (3), and a workstation adapter mechanism (4). The sliding guide mechanism (2) is disposed on the stable floor (1), the punching unit (3) is disposed on the sliding guide mechanism (2), and the workstation adapter mechanism (4) is disposed below the sliding guide mechanism (2).

2. The sliding punching device according to claim 1, characterized in that: The sliding guide mechanism (2) includes guide posts (21), which are fixedly mounted on the stable floor (1). Multiple guide posts (21) are symmetrically arranged in two groups. Each group of guide posts (21) is fitted with a movable plate (22). A limit plate (23) is provided at the top of the guide post (21). A buffer spring (24) is provided between the limit plate (23) and the movable plate (22). A bearing plate (25) is provided between the two movable plates (22). Lifting members (26) are symmetrically arranged between the two groups of guide posts (21). The telescopic end of the lifting member (26) is fixedly connected to the bottom of the movable plate (22). A punching unit (3) is provided at the bottom center of the movable plate (22).

3. The sliding punching device according to claim 2, characterized in that: The punching unit (3) includes a punch (31), which is located at the bottom of the bearing plate (25). A punch (32) is located at the bottom of the punch (31), and a pressure sleeve (33) is slidably sleeved on the punch (32). A return spring (34) is provided between the pressure sleeve (33) and the punch (31).

4. The sliding punching device according to claim 3, characterized in that: The workstation adaptation mechanism (4) includes support columns (41), multiple support columns (41) are fixedly installed on the stable floor (1), and a support platform (42) is fixedly installed on the top of the multiple support columns (41). A rotating platform (43) is rotatably installed on the support platform (42). Multiple holes and slots (44) are provided circumferentially on the rotating platform (43). Waste holes (45) are provided on the support platform (42) corresponding to the holes and slots (44). A rotating groove (46) is opened in the center of the support platform (42). A rotating ring (47) is provided at the bottom of the rotating platform (43). The rotating ring (47) is inserted into the rotating groove (46) and rotates. Multiple limiting blocks (48) are provided circumferentially on the rotating platform (43). A plug rod (49) is horizontally installed in the limiting block (48). One end of the plug rod (49) is provided with an arc plate (50) that abuts against the inner wall of the flange.

5. The sliding punching device according to claim 4, characterized in that: A rod (49) is horizontally inserted into the limiting block (48), and an inclined block (51) is provided at the other end of the rod (49). A first clearance hole (52) and a second clearance hole (53) are correspondingly opened at the center of the support platform (42) and the rotating platform (43). A telescopic member (54) is provided below the first clearance hole (52). A cone head (55) is rotatably provided at the telescopic end of the telescopic member (54), and the cone head (55) abuts against the multiple inclined blocks (51).

6. The sliding punching device according to claim 5, characterized in that: The outer side of the rotating platform (43) is provided with toothed patterns (56), and the outer side of the support platform (42) is provided with a placement platform (57). A driving member (58) is provided on the placement platform (57), and a spur gear (59) is provided at the driving end of the driving member (58). The spur gear (59) meshes with the toothed patterns (56) provided on the outer side of the rotating platform (43).

7. The sliding punching device according to claim 6, characterized in that: A protective ring (60) is provided on the outer side of the support platform (42), and a protective groove (61) is provided inside the protective ring (60). A protective cover (62) is provided on the outer side of the drive component (58), and the protective ring (60) is fixedly connected to the protective cover (62).

8. The sliding punching device according to claim 4, characterized in that: The diameter of the punch (32) is set to correspond to the diameter of the slot (44).

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