A bookbinding machine with a punching and riveting mechanism

Abstract

The present application relates to the technical field of binding equipment, and discloses a binding machine with a punching and riveting structure automatic core, which comprises a rack, a punching mechanism, a riveting mechanism and a bidirectional lifting assembly, wherein the punching mechanism is arranged on the rack in a lifting mode, the riveting mechanism is arranged on the rack in a lifting mode, and the bidirectional lifting assembly is connected between the punching mechanism and the riveting mechanism in a transmission mode; the punching mechanism comprises a bearing frame arranged on the rack in a lifting mode, a driving piece arranged on the bearing frame, a worm connected with an output shaft of the driving piece, a reduction gear arranged on the bearing frame in a rotating mode and engaged with the worm, a drill sleeve fixed with the reduction gear, and a drill fixed with the drill sleeve; a nut is fixed on the rack, and the drill sleeve is fixed with a screw rod matched with the nut in a screwing mode; the driving piece drives the drill sleeve to rotate through the reduction gear, the drill sleeve drives the punching mechanism to lift through the screwing cooperation between the screw rod and the nut, and the lifting movement of the punching mechanism drives the riveting mechanism to lift reversely through the bidirectional lifting assembly.

Description

Technical Field

[0001] This invention relates to the field of binding equipment technology, and in particular discloses a binding machine with an automatic mechanism featuring a punching and riveting structure. Background Technology

[0002] Currently, most automatic binding machines use belt drives or multi-stage gear drives in conjunction with lead screws and nuts to achieve motion conversion in their punching and lifting structures. Traditional transmission methods suffer from long transmission paths and numerous intermediate links, easily leading to coaxiality errors and energy loss. This results in insufficient punching accuracy, low transmission efficiency, and rapid mechanical wear, affecting the equipment's lifespan. Furthermore, the lead screws and nuts are mostly of conventional structures, with poor assembly tolerance, prone to loosening and misalignment, further reducing lifting stability. Simultaneously, the punching and riveting mechanisms in existing equipment are mostly independently driven, with complex structures and poor linkage. The riveting table lacks an elastic floating compensation structure, easily affecting riveting quality due to positional deviations. The punching chip removal structure is poorly designed, easily clogging with debris. The pressure plate lacks a suitable avoidance and elastic paper-pressing structure, easily causing paper displacement. Moreover, it lacks precise stroke detection and a stable support structure. Overall, these machines suffer from low automation, low operating efficiency, and insufficient operational stability and safety, making it difficult to meet the demands of high-precision and high-efficiency binding operations. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a binding machine with an automatic mechanism having a punching and riveting structure.

[0004] To achieve the above objectives, the present invention provides a binding machine with an automatic mechanism for punching and riveting, comprising a frame, a punching mechanism and a riveting mechanism mounted on the frame, and a bidirectional lifting assembly connected to the punching mechanism and the riveting mechanism. The punching mechanism includes a support frame mounted on the frame, a drive member mounted on the support frame, a worm gear connected to the output shaft of the drive member, a reduction gear rotatably mounted on the support frame and meshing with the worm gear, a drill sleeve fixed to the reduction gear, and a drill bit fixed to the drill sleeve. A nut is fixed on the frame, and a lead screw is fixed to the drill sleeve and threadedly engaged with the nut. The drive member drives the drill sleeve to rotate via the reduction gear, and the drill sleeve drives the punching mechanism to rise and fall through the threaded engagement of the lead screw and the nut. The rising and falling motion of the punching mechanism drives the riveting mechanism to rise and fall in the opposite direction through the bidirectional lifting assembly.

[0005] The two ends of the drill bushing are coaxially fixed to the drill bit and the lead screw respectively. The nut includes an integrally formed cylindrical threaded part and a triangular mounting part. The internal thread of the cylindrical threaded part extends axially to the upper end face of the triangular mounting part, and the side wall of the internal thread has an axial opening groove. The lower end face of the triangular mounting part fits against the frame plane and is screwed to the frame through three mounting holes at the apex of the triangle. The frame is equipped with a controller, which includes a device switch and an electrical interface. The support frame is provided with a slanted guide. The frame is movably equipped with rollers, contact rods hinged to the rollers, and proximity sensors that cooperate with the contact rods. The device switch is used to control the start and stop of the binding machine, and the electrical interface enables the device to supply power and transmit signals. When the support frame rises and falls with the punching mechanism, the slanted guide pushes the rollers, causing the contact rod to swing, triggering the proximity sensor to provide feedback on the rising and falling position of the punching mechanism, thereby achieving precise limiting of the punching stroke and safety protection.

[0006] This solution achieves efficient lifting of the drilling mechanism by coaxially fixing the drill bushing and reduction gear, along with a lead screw and nut structure. The short transmission path and high coaxiality significantly improve drilling accuracy and stability. The one-piece molded shaped nut combines a cylindrical threaded connection and a triangular mounting part. The axial opening groove compensates for machining errors, and the triangular mounting part achieves rigid fixation through three-point screwing, preventing nut loosening. Simultaneously, the integrated controller and stroke detection structure, through the linkage of the inclined guide, rollers, and proximity sensors, can provide real-time feedback on the lifting position, achieving precise stroke limits and safety protection, effectively preventing overshoot or jamming, and improving the automation level and operational safety of the equipment.

[0007] The bidirectional lifting assembly includes a transmission gear rotatably mounted on the frame and two racks meshing on both sides of the transmission gear and parallel to each other. The two racks are respectively connected to a drilling mechanism and a riveting mechanism. The frame is provided with a guide hole for guiding one rack through and a limiting member parallel to the extension direction of the rack. The limiting member is used to guide and limit the lifting of the other rack.

[0008] This solution employs a combination of transmission gears and double-sided parallel racks to synchronously convert the lifting motion of the punching mechanism into the reverse lifting motion of the riveting mechanism. This achieves precise linkage between punching and riveting actions, eliminating the need for an additional drive source, simplifying the equipment structure, and reducing energy consumption. The design of the guide holes and limiting components provides stable guidance and constraint for the racks, preventing them from shifting or jamming during movement and ensuring the synchronicity and smoothness of bidirectional lifting. This structure boasts high transmission efficiency and fast response speed, effectively improving the working efficiency and motion coordination of the binding machine, reducing mechanical wear, and extending the equipment's service life.

[0009] The output end of the drive component is provided with a worm gear assembly, which includes a transmission worm located on the output shaft of the drive component and a worm wheel that is connected to the transmission worm. The worm wheel is the reduction gear, and the drill bushing is coaxially fixed inside the worm wheel.

[0010] This solution transmits power through a worm gear assembly. Utilizing the self-locking characteristic of the worm gear, the drilling mechanism remains locked in position when the equipment stops or is powered off, preventing accidental drill bit drops and ensuring safety. This also improves transmission stability. The worm gear directly functions as a reduction gear and is coaxially fixed to the drill bushing, simplifying the transmission structure, reducing energy loss and coaxiality errors in intermediate transmission links, and further improving drilling accuracy. The meshing transmission between the worm and worm gear has a large reduction ratio, converting the high-speed output of the drive component into the low-speed rotation of the drill bushing, meeting the torque requirements of drilling operations and resulting in smoother drill bit cutting.

[0011] The frame is equipped with guide posts, and the support frame is equipped with a main guide sleeve that slides with the guide posts. The support frame slides with the frame through the guide posts and the main guide sleeve. The support frame is fixedly connected to the fixed ends of the bidirectional lifting assembly and the drive component, respectively. A limiting structure is provided between the drill sleeve and the support frame. The limiting structure includes limiting bearings sleeved on the upper and lower ends of the drill sleeve. The drill sleeve is configured as a stepped shaft structure. The inner ring of the limiting bearing abuts against the stepped surface of the drill sleeve for limiting. The inner wall of the support frame is equipped with a stepped boss that matches the outer ring of the limiting bearing. The limiting bearing and the stepped boss cooperate to achieve bidirectional limiting of the drill sleeve in both the axial and radial directions.

[0012] This design protects the worm gear assembly with a support frame, effectively preventing the intrusion of debris and dust and extending the service life of the transmission components. The sliding fit between the guide post and the main guide sleeve provides precise lifting guidance for the support frame, ensuring smooth and deviation-free movement of the drilling mechanism. The bidirectional limiting structure between the drill bushing and the support frame, through the cooperation of a stepped shaft, limiting bearing, and stepped boss, achieves axial and radial bidirectional positioning of the drill bushing, preventing it from shifting or wobbling during rotation and lifting, and ensuring the coaxiality of the drill bit and drilling accuracy. The fixed connection between the support frame, the drive component, and the bidirectional lifting assembly forms an integrated motion unit, further improving the synchronization and reliability of the transmission.

[0013] The drilling mechanism also includes a chip removal structure. The drill bit has a hollow interior. The chip removal structure includes a chip removal hole on the drill sleeve that communicates with the hollow structure, a chip removal channel on the support frame that communicates with the chip removal hole, and a guide groove on the drill sleeve. The guide groove communicates with the chip removal hole. The chip removal channel includes a chip removal space and a chip removal section. A guide slope is provided between the chip removal space and the chip removal section. The lowest horizontal plane of the chip removal space is higher than the highest horizontal plane of the chip removal section. The guide groove includes an upper slope and a lower slope. The chip removal hole communicates with the lower slope. The slope of the upper slope is greater than that of the lower slope. The chip removal structure collects drilling debris through the hollow drill bit, guides it into the chip removal space through the chip removal hole and the guide groove, and then achieves rapid directional gravity discharge of the debris through the height difference of the guide slope and the slope difference of the guide groove.

[0014] This chip removal structure collects drilling debris through a hollow drill bit and guides it into the chip removal space via chip removal holes and guide grooves. Gravity chip removal is achieved by utilizing the height difference of the guide slope and the slope difference of the guide groove, eliminating the need for an additional negative pressure device. The structure is simple and energy-efficient. The upper slope of the guide groove is steeper than the lower slope, guiding paper debris quickly and preventing backflow. Combined with the height difference between the chip removal space and the chip removal section, this significantly improves chip removal efficiency and effectively prevents paper debris from clogging the chip removal holes and channels. This design reduces the frequency of downtime for cleaning, improves the continuous operation capability of the equipment, and avoids the impact of residual debris on drilling accuracy and equipment lifespan, ensuring the long-term stable operation of the binding machine.

[0015] The riveting mechanism includes a riveting knife, a heater connected to the riveting knife, a lower riveting platform, and an upper riveting platform disposed on the riveting knife. The upper riveting platform and the lower riveting platform are arranged opposite to each other, and the structures of their opposite end faces are identical. From the inside out, the end faces of the upper and lower riveting platforms are sequentially provided with a riveting through hole, an inner ring support surface, a disc-shaped ring surface, an outer ring support surface, and a conical ring surface. The outer ring support surface is the top surface of the conical ring surface, and the inner ring... The supporting surface is coplanar with the outer ring supporting surface, and the disc-shaped ring surface is an inwardly concave structure that transitions from the inner ring supporting surface to the outer ring supporting surface in an arc shape; the inner ring supporting surface and the outer ring supporting surface of the upper and lower riveting tables are used to support the upper and lower end faces of the document to be bound, and the disc-shaped ring surface is used to abut the end of the rivet tube. After the heater heats the riveting knife, the upper and lower riveting tables close the mold facing each other, and the disc-shaped ring surfaces at both ends fold and shape the rivet tube end after hot melting, so as to realize the circular closed riveting of the rivet tube.

[0016] This design employs a symmetrical riveting platform structure with coplanar inner and outer ring support surfaces, providing stable support for documents and preventing paper deformation during riveting. The concave arc design of the disc-shaped ring allows for uniform compression of the riveting tube end during the hot-melt process, folding it into a closed circular structure, resulting in high riveting strength and a smooth appearance. The connection design between the heater and the riveting knife ensures rapid heat transfer, guaranteeing uniform hot-melt of the riveting tube. Combined with precise mold closing action, this significantly improves the consistency and reliability of riveting. This structure integrates drilling and riveting operations without manual intervention, effectively improving binding efficiency and finished product quality.

[0017] The frame is equipped with a base for supporting the lower riveting table. The lower riveting table has a cylindrical structure. The base has a receiving hole for accommodating the lower riveting table. The bottom of the lower riveting table has a central boss and elastic arms located on both sides of the central boss. Stress blocks are accommodated between the central boss and the elastic arms on both sides. The stress blocks abut against the central boss and the elastic arms respectively. A riveting through hole is set in the central boss. After the riveting knife is inserted into the riveting through hole, the central boss transmits the force to the stress blocks, pushing the elastic arms outward to abut against the wall of the receiving hole to form a limit. Through the elastic abutment cooperation between the elastic arms and the stress blocks, an elastic floating margin is provided for the lower riveting table, which adaptively compensates for the riveting position deviation, buffers the impact force, and ensures the coaxiality of the riveting through hole and the upper riveting table.

[0018] The lower riveting table in this design, through the cooperation of an elastic arm and a stress block, can abut against the wall of the receiving hole to form a limit when the riveting knife is inserted, while providing elastic floating margin to adaptively compensate for riveting position deviations, buffer impact forces, and avoid component wear or riveting misalignment caused by hard contact. The force transmission structure of the central boss and stress block makes the force distribution more uniform, improving the load-bearing capacity and stability of the riveting table. This design ensures the coaxiality of the riveting through hole and the upper riveting table, effectively improving riveting accuracy and finished product qualification rate. At the same time, the elastic floating structure can adapt to documents of different thicknesses, enhancing the versatility and adaptability of the equipment.

[0019] A circular fitting gap is provided between the lower riveting platform and the wall of the receiving hole, providing elastic floating space for the lower riveting platform. The base includes a detachable main limiting platform and a secondary limiting platform. The secondary limiting platform and the main limiting platform are combined to form a complete circular fitting hole. The detachable secondary limiting platform is used to clean the residual paper scraps of the document to be riveted that are received in the receiving hole. The central boss is provided with threaded holes on both sides of the riveting through hole. The central boss is screwed to the base through the threaded holes. A circular groove is provided at the bottom of the receiving hole. A circular piece is placed in the circular groove. The circular piece cooperates with the riveting through hole to abut and limit the cutting head of the riveting knife, thus limiting the downward stroke of the riveting knife.

[0020] The annular fitting gap between the lower riveting platform and the receiving hole in this design provides ample flexible floating space for the riveting platform. Combined with the detachable, split base, the secondary limiting platform can be quickly disassembled to clean paper scraps from the receiving hole, significantly improving maintenance convenience. The circular plate's contact and limiting design with the riveting cutter head precisely limits the downward stroke of the riveting cutter, preventing damage to components or deformation of the riveting tube due to overpressure. The screw-on fixing method of the central boss ensures the installation accuracy and stability of the riveting platform. The combination of the detachable structure and the limiting design improves equipment maintenance efficiency while ensuring the safety and reliability of riveting operations.

[0021] The frame is equipped with a punching table for carrying the documents to be punched. The support frame is equipped with a fixed rod and a pressure plate set on the fixed rod. The pressure plate is equipped with a secondary guide sleeve that slides with the guide post and a clearance groove for avoiding the lifting and lowering of the drill bit. A telescopic spring is provided between the pressure plate and the fixed rod to provide a downward elastic preload, so that the pressure plate forms an elastic floating stroke relative to the support frame, thereby pressing the paper before the drill bit during synchronous lifting and lowering, avoiding interference between the pressure plate and the punching table.

[0022] The pressure plate in this design uses a telescopic spring to provide downward elastic preload, allowing it to contact and clamp the document before the drill bit during the punching mechanism's lifting and lowering, preventing document displacement or wrinkling and improving punching accuracy. The sliding fit between the auxiliary guide sleeve and the guide post provides stable guidance for the pressure plate, ensuring smooth and non-deviation-prone movement. The clearance groove design prevents interference between the pressure plate and the drill bit, and the elastic floating structure of the telescopic spring adapts to documents of varying thicknesses, ensuring uniform pressure force. This design effectively improves the stability of the punching operation and the quality of the finished product, while reducing the defect rate caused by document displacement, enhancing the equipment's practicality.

[0023] The frame has a support foot at the bottom. The support foot includes a columnar main body. The upper part of the main body has screw holes and a positioning boss. The positioning boss has a limiting post and a hollow rib assembly. The screw holes are used to screw the support foot to the frame. The positioning boss is adapted to the positioning groove at the bottom of the frame to realize the quick positioning and assembly of the support foot. The limiting post is used to insert into the limiting hole of the frame to prevent the support foot from rotating and loosening. The hollow rib assembly reduces the weight of the support foot while enhancing its structural rigidity.

[0024] This design utilizes a positioning boss and limiting post to enable rapid positioning and assembly of the support legs with the frame, preventing rotation and loosening, and significantly improving installation efficiency and stability. The hollowed-out ribs reduce the weight of the support legs while enhancing structural rigidity, effectively buffering vibrations during binding machine operation, reducing noise, and improving equipment stability. The screw hole design ensures a rigid connection between the support legs and the frame, while the combination of the positioning boss and limiting post distributes stress, avoiding localized stress concentration and extending the service life of both the support legs and the frame. This design improves the ease of installation and operational stability of the equipment, while the lightweight design reduces overall transportation costs.

[0025] The beneficial effects of this invention are as follows: The drill bushing and the reduction gear are fixed coaxially, eliminating the need for traditional belt and gear transmissions, shortening the transmission path, eliminating transmission losses and coaxiality errors, fundamentally improving drilling accuracy and transmission efficiency, simplifying the structure, and reducing wear; the lead screw and the special-shaped nut are screwed together to accurately realize the conversion of rotational to lifting motion, and together with the core transmission structure, ensure the lifting stability of the drilling mechanism; the worm gear assembly realizes speed reduction and torque increase and self-locking, providing adaptive power for the core transmission, locking the mechanism position, and improving the safety of equipment operation; the guide post slides with the main guide sleeve and the auxiliary guide sleeve to accurately guide the drilling mechanism and the lifting of the pressure plate, avoid movement deviation, and ensure the operating accuracy of the core structure; the bidirectional lifting assembly links the drilling and riveting mechanisms to lift synchronously in opposite directions, without the need for additional drive, simplifying the overall structure and improving the efficiency of binding operations; The flexible floating riveting table adaptively compensates for riveting deviations, ensuring riveting coaxiality and forming quality, and adapts to the core punching structure for precise binding. A hollow drill bit, combined with a chip removal structure, efficiently removes punching debris, preventing blockages that could affect the core transmission and ensuring continuous and stable operation. An elastic pressure plate with clearance grooves presses the paper before the drill bit, avoiding interference, adapting to documents of different thicknesses, preventing paper shifting, and ensuring punching accuracy. A stroke detection structure, working in conjunction with a controller, accurately feeds back the lifting position of the punching mechanism, achieving stroke limits and automated control, improving operational safety. A support foot structure enables rapid positioning and assembly, enhances overall equipment rigidity, buffers operational vibrations, and provides a stable operating foundation for the core and supporting structures. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a binding machine with an automatic mechanism featuring a punching and riveting structure, according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the drilling mechanism of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the drilling mechanism of the present invention. Figure 2 ; Figure 5 This is a cross-sectional view of the drilling mechanism of the present invention; Figure 6 This is a schematic diagram of the drill sleeve structure of the present invention; Figure 7 This is a schematic diagram of the support frame and chip removal structure of the present invention; Figure 8 This is a schematic diagram of the press-fit structure of the present invention; Figure 9 This is a schematic diagram of the lower pressure riveting station and the base of the present invention; Figure 10This is a cross-section of the lower pressing riveting table and the base of the present invention. Figure 1 ; Figure 11 This is a cross-section of the lower pressing riveting table and the base of the present invention. Figure 2 ; Figure 12 This is a schematic diagram of the support foot of the present invention; Figure 13 This is a partial structural diagram of the present invention.

[0027] The reference numerals in the attached drawings include: 1. Frame; 2. Drilling mechanism; 3. Riveting mechanism; 4. Bidirectional lifting assembly; 5. Drive component; 6. Reduction gear; 7. Drill sleeve; 8. Drill bit; 9. Nut; 11. Lead screw; 12. Transmission gear; 13. Rack; 14. Guide hole; 15. Limiting component; 16. Transmission worm gear; 17. Bearing frame; 18. Guide post; 19. Main guide sleeve; 21. Limiting bearing; 22. Stepped shaft structure; 23. Stepped boss; 24. Chip removal hole; 25. Guide groove; 26. Chip removal space; 27. Chip removal section; 28. Guide slope; 29. ​​Upper slope; 31. Lower slope; 32. Riveting tool; 33. Heater; 34. Lower riveting platform; 35. Upper riveting platform; 36. Riveting through hole; 37. Inner ring support surface; 38. 39. Disc-shaped toroidal surface; 41. Outer ring support surface; 42. Conical toroidal surface; 43. Base; 44. Accommodating hole; 45. Central boss; 46. Elastic arm; 47. Stress block; 48. Accommodating gap; 49. Main limiting platform; 50. Secondary limiting platform; 51. Threaded hole; 52. Circular groove; 53. Circular piece; 54. Drilling platform; 55. Fixing rod; 56. Pressure plate; 57. Secondary guide sleeve; 58. Clearance groove; 59. Telescopic spring; 61. Support foot; 62. Main body; 63. Screw hole; 64. Positioning boss; 65. Limiting post; 66. Hollowed-out rib assembly; 67. Cylindrical screw connection; 68. Triangular mounting part; 69. Equipment switch; 71. Electrical interface; 72. Angled guide; 73. Roller; 74. Contact rod; 75. Proximity sensor. Detailed Implementation

[0028] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0029] Please see Figures 1 to 13As shown, a binding machine with an automatic mechanism for punching and riveting according to the present invention includes a frame 1, a punching mechanism 2 and a riveting mechanism 3 that are lifted and lowered on the frame 1, and a bidirectional lifting assembly 4 that is driven between the punching mechanism 2 and the riveting mechanism 3. The punching mechanism 2 includes a support frame 17 that is lifted and lowered on the frame 1, a drive member 5 that is mounted on the support frame 17, a worm gear connected to the output shaft of the drive member 5, a reduction gear 6 that is rotatably mounted on the support frame 17 and meshes with the worm gear, a drill sleeve 7 that is fixed to the reduction gear 6, and a drill bit 8 that is fixed to the drill sleeve 7. A nut 9 is fixed on the frame 1, and a screw rod 11 that is screwed into the nut 9 is fixed to the drill sleeve 7. The drive member 5 drives the drill sleeve 7 to rotate via the reduction gear 6, and the drill sleeve 7 drives the punching mechanism 2 to rise and fall through the screw rod 11 and the nut 9. The rising and falling movement of the punching mechanism 2 drives the riveting mechanism 3 to rise and fall in the opposite direction through the bidirectional lifting assembly 4.

[0030] The two ends of the drill bushing 7 are coaxially fixed to the drill bit 8 and the lead screw 11, respectively. The nut 9 includes an integrally formed cylindrical threaded part 67 and a triangular mounting part 68. The internal thread of the cylindrical threaded part 67 extends axially to the upper end face of the triangular mounting part 68, and the side wall of the internal thread is provided with an axial opening groove. The lower end face of the triangular mounting part 68 fits against the plane of the frame 1 and is screwed to the frame 1 through three mounting holes at the apex of the triangle. The frame 1 is equipped with a controller, which includes a device switch 69 and an electrical interface 71. The support frame 17 is provided with a slanted guide 72. The frame 1 is movably equipped with a roller 73, a contact rod 74 hinged to the roller 73, and a proximity sensor 75 cooperating with the contact rod 74. The device switch 69 is used to control the start and stop of the binding machine, and the electrical interface 71 realizes the power supply and signal transmission of the device. When the support frame 17 rises and falls with the punching mechanism 2, the slanted guide 72 pushes against the roller 73, causing the contact rod 74 to swing, triggering the proximity sensor 75 to provide feedback on the rising and falling position of the punching mechanism 2, so as to achieve precise limit of the punching stroke and safety protection.

[0031] In this embodiment, after the drive unit 5 is started, it outputs power to the reduction gear 6, which directly drives the drill sleeve 7, which is coaxially fixed to it, to rotate. Compared with the traditional technology that uses belt drive and multi-stage gear drive, this eliminates intermediate transmission components, which can significantly reduce transmission loss and coaxiality deviation, and improve drilling transmission efficiency and accuracy. When the drill sleeve 7 rotates, the lead screw 11, which is coaxially fixed at its top, forms a screw connection with the nut 9 on the frame 1, converting the rotational motion into the linear lifting motion of the drilling mechanism 2. The transmission process is stable and precise. While the drilling mechanism 2 is lifting, the power is transmitted to the riveting mechanism 3 through the bidirectional lifting component 4, which drives the riveting mechanism 3 to lift synchronously in the opposite direction. This enables the linkage of drilling and riveting actions, eliminating the need for a separate drive source for the riveting mechanism 3 and simplifying the overall structure of the equipment.

[0032] The nut 9 adopts an integral structure of cylindrical threaded part 67 and triangular mounting part 68. The axial opening groove of the cylindrical threaded part 67 can compensate for machining and assembly errors. The triangular mounting part 68 is screwed into the frame 1 through the mounting holes at the three vertices. Compared with the traditional single-hole or two-hole mounting of the nut 9, the connection rigidity is stronger, which can effectively prevent the nut 9 from loosening and shifting. The controller on the frame 1 realizes the start and stop control of the whole machine through the equipment switch 69, and the electrical interface 71 can complete the power supply and signal transmission. When the support frame 17 rises and falls with the drilling mechanism 2, its inclined guide 72 pushes the roller 73 on the frame 1, which drives the contact rod 74 hinged to the roller 73 to swing. After the contact rod 74 triggers the proximity sensor 75, it feeds back the lifting position signal, which can realize the precise limit of the drilling stroke. Compared with the traditional stroke control method, the response is more timely, which can effectively avoid overshoot or jamming of the mechanism and improve the safety of equipment operation. The proximity sensor 75 can be a small cylinder and can be directly embedded in the mounting slot of the frame 1, which has stronger adaptability.

[0033] The bidirectional lifting assembly 4 includes a transmission gear 12 rotatably mounted on the frame 1 and two racks 13 meshing on both sides of the transmission gear 12 and parallel to each other. The two racks 13 are respectively connected to the drilling mechanism 2 and the riveting mechanism 3. The frame 1 is provided with a guide hole 14 for one rack 13 to pass through and a limiting member 15 parallel to the extension direction of the rack 13. The limiting member 15 is used to guide and limit the lifting of the other rack 13.

[0034] In this embodiment, the transmission gear 12 of the bidirectional lifting assembly 4 is rotatably mounted on the frame 1, and two racks 13 mesh parallel to each other on both sides of the transmission gear 12, and are fixedly connected to the drilling mechanism 2 and the riveting mechanism 3 respectively. When the drilling mechanism 2 is raised or lowered, it can drive one side of the rack 13 to move synchronously, thereby driving the transmission gear 12 to rotate. The transmission gear 12 then drives the other side of the rack 13 to move in the opposite direction, ultimately realizing the reverse synchronous lifting and lowering of the riveting mechanism 3 and the drilling mechanism 2. This transmission structure is simple and compact, with high transmission efficiency. Compared with the design of independent driving for drilling and riveting in traditional technology, it can significantly reduce the number of equipment parts and reduce the equipment failure rate.

[0035] The guide hole 14 on the frame 1 allows the rack 13 to pass through for guidance. The limiting member 15, parallel to the extension direction of the rack 13, abuts against the side wall of the rack 13, limiting the rack 13 from both sides. This effectively prevents the rack 13 from shifting or tilting during lifting, ensuring the meshing accuracy between the rack 13 and the transmission gear 12. The guide structure of the rack 13 can be an integrated guide groove 25 or a separate limiting block, both of which can achieve a stable guiding and limiting effect. Through the cooperation of the guide hole 14 and the limiting member 15, the transmission of the bidirectional lifting assembly 4 can be made smoother, ensuring the linkage and synchronization of the drilling and riveting actions, improving the continuity and efficiency of the binding operation, and solving the problems of poor linkage and asynchronous actions in drilling and riveting in traditional technology.

[0036] The output end of the drive component 5 is provided with a worm gear assembly. The worm gear assembly includes a transmission worm 16 disposed on the output shaft of the drive component 5 and a worm wheel that is connected to the transmission worm 16 in a transmission manner. The worm wheel is the reduction gear 6, and the drill sleeve 7 is coaxially fixed inside the worm wheel.

[0037] In this embodiment, a worm gear assembly is provided at the output end of the drive component 5. The output shaft of the drive component 5 drives the transmission worm 16 to rotate. The transmission worm 16 meshes with the worm wheel to transmit power to the worm wheel. The worm wheel is directly fixed coaxially with the drill sleeve 7 as a reduction gear 6, which can realize the direct transmission of power. Compared with the traditional technology of setting a separate reduction gear set + output gear, this structure simplifies the reduction transmission structure and reduces the energy loss of intermediate transmission links. The worm gear transmission has the characteristic of a large reduction ratio, which can convert the high-speed rotation of the drive component 5 into the low-speed rotation of the drill sleeve 7, while increasing the output torque. This can meet the torque requirements of the drill bit 8 when drilling, making the drill bit 8 cut paper more smoothly and avoiding problems such as paper jams and incomplete drilling.

[0038] In addition, the worm gear assembly has a self-locking characteristic. When the drive unit 5 stops or is powered off, the worm gear cannot drive the worm to rotate in the opposite direction, which can lock the position of the drilling mechanism 2. Compared with the traditional method of setting an additional braking component, the braking structure can be eliminated, reducing equipment costs. At the same time, it can effectively prevent the drill bit 8 from falling accidentally, improving the operational safety of the equipment. The worm gear and the drill sleeve 7 can be fixed by interference fit or key connection, both of which can achieve reliable coaxial fixation and power transmission.

[0039] The frame 1 is provided with a guide post 18, and the support frame 17 is provided with a main guide sleeve 19 that slides with the guide post 18. The support frame 17 slides with the frame 1 through the guide post 18 and the main guide sleeve 19. The support frame 17 is fixedly connected to the fixed ends of the bidirectional lifting assembly 4 and the driving component 5 respectively. A limiting structure is provided between the drill sleeve 7 and the support frame 17. The limiting structure includes a limiting bearing 21 sleeved on the upper and lower ends of the drill sleeve 7. The drill sleeve 7 is provided with a stepped shaft structure 22. The inner ring of the limiting bearing 21 abuts against the stepped surface of the drill sleeve 7 for limiting. The inner wall of the support frame 17 is provided with a stepped boss 23 that matches the outer ring of the limiting bearing 21. The limiting bearing 21 and the stepped boss 23 cooperate to achieve bidirectional limiting of the drill sleeve 7 in both the axial and radial directions.

[0040] In this embodiment, the worm gear assembly is externally covered by a support frame 17, which effectively prevents paper scraps and dust generated during the drilling process from entering the meshing part of the worm gear, avoiding wear and jamming of the meshing surface. Compared with the exposed design of the worm gear assembly in traditional technology, this can significantly extend the service life of the transmission components and reduce the frequency of equipment maintenance. A guide post 18 is provided on the frame 1, and the main guide sleeve 19 on the support frame 17 slides with the guide post 18, providing precise guidance for the lifting and lowering of the support frame 17. This prevents the support frame 17 from shifting or shaking when it rises and falls with the drilling mechanism 2, ensuring the motion accuracy of the drilling mechanism 2. The support frame 17 is connected to the bidirectional lifting assembly 4 and the fixed end of the drive component 5, respectively, so that the drive component 5, the worm gear assembly, and the support frame 17 form an integrated motion unit, which allows for more direct power transmission and improves transmission synchronization.

[0041] The limiting structure between the drill sleeve 7 and the support frame 17 adopts a limiting bearing 21 sleeved on the upper and lower ends of the drill sleeve 7. The drill sleeve 7 is designed as a stepped shaft structure 22. The inner ring of the limiting bearing 21 abuts against the stepped surface of the drill sleeve 7 to achieve axial limiting. The stepped boss 23 on the inner wall of the support frame 17 is adapted to abut against the outer ring of the limiting bearing 21 to achieve radial limiting of the drill sleeve 7. Compared with the limiting method of using a shoulder + retaining ring in the traditional technology, the bearing limiting can reduce the frictional resistance when the drill sleeve 7 rotates, making the rotation of the drill sleeve 7 smoother. At the same time, it can achieve precise limiting in both axial and radial directions, effectively preventing the drill sleeve 7 from moving or swaying during rotation and lifting, ensuring the coaxiality of the drill bit 8, and improving the drilling accuracy.

[0042] The drilling mechanism 2 also includes a chip removal structure. The drill bit 8 has a hollow interior. The chip removal structure includes a chip removal hole 24 on the drill sleeve 7 communicating with the hollow structure, a chip removal channel on the support frame 17 communicating with the chip removal hole 24, and a guide groove 25 on the drill sleeve 7. The guide groove 25 communicates with the chip removal hole 24. The chip removal channel includes a chip removal space 26 and a chip removal section 27. A guide slope 28 is provided between the chip removal space 26 and the chip removal section 27. The lowest level of the chip removal space 26 is higher than the highest level of the chip removal section 27. The guide groove 25 includes an upper inclined surface 29 and a lower inclined surface 31. The chip removal hole 24 is connected to the lower inclined surface 31. The slope of the upper inclined surface 29 is greater than the slope of the lower inclined surface 31. The chip removal structure collects drilling debris through the hollow drill bit 8, guides it into the chip removal space 26 through the chip removal hole 24 and the guide groove 25, and then achieves rapid directional gravity discharge of the debris through the height difference of the guide inclined surface 28 and the slope difference of the guide groove 25.

[0043] In this embodiment, the chip removal structure of the drilling mechanism 2 is based on the hollow structure of the drill bit 8. When the drill bit 8 drills, paper scraps can directly enter the hollow cavity of the drill bit 8. Compared with the traditional technology of solid drill bit 8 with side chip removal port design, the chip removal channel is smoother and can avoid the accumulation of paper scraps at the cutting part of the drill bit 8. A chip removal hole 24 is provided on the drill sleeve 7, which is connected to the hollow structure of the drill bit 8. Paper scraps inside the drill bit 8 can enter the guide groove 25 on the drill sleeve 7 through the chip removal hole 24. The slope of the upper inclined surface 29 of the guide groove 25 is greater than that of the lower inclined surface 31, and the chip removal hole 24 is connected to the lower inclined surface 31. Under the action of its own gravity and the centrifugal force of the rotation of the drill sleeve 7, the paper scraps can slide quickly into the guide groove 25 along the upper inclined surface 29, and then smoothly enter the chip removal channel of the support frame 17 along the lower inclined surface 31. The large slope design of the upper inclined surface 29 can improve the efficiency of paper scrap entry, and the small slope design of the lower inclined surface 31 can prevent paper scraps from getting stuck in the guide groove 25, resulting in better chip removal effect.

[0044] The chip removal channel is divided into a chip removal space 26 and a chip removal section 27. The lowest level of the chip removal space 26 is higher than the highest level of the chip removal section 27. A guide slope 28 is set between the two. After paper scraps enter the chip removal space 26, they can slide down the guide slope 28 under gravity into the chip removal section 27 and finally be discharged outside the equipment. This gravity chip removal structure does not require additional configuration of negative pressure fans, scrapers, or other chip removal components 27. Compared with the active chip removal structure in traditional technology, it simplifies the chip removal design and reduces equipment energy consumption and manufacturing costs. The cooperation between the guide groove 25 and the guide slope 28 realizes the rapid directional gravity discharge of debris, which can effectively prevent paper scraps from clogging the chip removal hole 24 and the chip removal channel, solve the problem of equipment downtime for cleaning caused by poor chip removal in traditional technology, and improve the continuous operation capability of the equipment.

[0045] The riveting mechanism 3 includes a riveting knife 32, a heater 33 connected to the riveting knife 32, a lower riveting platform 34, and an upper riveting platform 35 disposed on the riveting knife 32. The upper riveting platform 35 and the lower riveting platform 34 are disposed opposite to each other, and the structures of the opposite end faces of the upper riveting platform 35 and the lower riveting platform 34 are identical. The end faces of the upper riveting platform 35 and the lower riveting platform 34 are provided sequentially from the inside to the outside with a riveting through hole 36, an inner ring support surface 37, a disc-shaped ring surface 38, an outer ring support surface 39, and a conical ring surface 41. The outer ring support surface 39 is the top surface of the conical ring surface 41. The inner ring support surface 37 and the outer ring support surface 39 are coplanar, and the disc-shaped ring surface 38 is an inwardly concave structure that transitions from the inner ring support surface 37 to the outer ring support surface 39 in an arc shape; the inner ring support surface 37 and the outer ring support surface 39 of the upper riveting table 35 and the lower riveting table 34 are used to support the upper and lower end surfaces of the document to be bound, and the disc-shaped ring surface 38 is used to abut the end of the rivet tube. After the heater 33 heats the riveting knife 32, the upper riveting table 35 and the lower riveting table 34 close the mold facing each other, and the disc-shaped ring surfaces 38 at both ends extrude the fused end of the rivet tube and fold it into shape, thereby realizing the circular closed riveting of the rivet tube.

[0046] In this embodiment, the upper riveting platform 35 and the lower riveting platform 34 of the riveting mechanism 3 are arranged opposite to each other and have completely identical end face structures. From the inside out, their end faces are sequentially provided with a riveting through hole 36, an inner ring support surface 37, a disc-shaped ring surface 38, an outer ring support surface 39, and a conical ring surface 41. The inner ring support surface 37 and the outer ring support surface 39 are coplanar. When the riveting action begins, the upper and lower end faces of the document to be bound can respectively fit against the support surfaces of the upper and lower riveting platforms 34. Compared with the traditional design where the riveting platform support surface is a single ring, the double support surface can improve the stability of the document support and prevent paper deformation and wrinkling during riveting. The riveting knife 32 is connected to the heater 33, which can heat the riveting knife 32, and the heat is transferred to the upper riveting platform 35.

[0047] After drilling is completed, the rivet tube is inserted into the drilled hole in the document. The upper riveting platform 35 descends with the riveting mechanism 3, while the lower riveting platform 34 rises relative to it. The two platforms close together, and the two ends of the rivet tube abut against the disc-shaped annular surfaces 38 of the upper and lower riveting platforms 34, respectively. The disc-shaped annular surface 38 has an arc-shaped concave structure, which can uniformly compress the end of the rivet tube in the hot-melt state, causing the end of the rivet tube to fold outward, ultimately forming a closed circular structure. Compared with the planar riveting method used in traditional technology, the closed circular riveting has higher riveting strength, and the bound document is more secure and less prone to loosening. The conical annular surface 41 can limit and shape the folded end of the rivet tube, making the rivet tube more regular and improving the appearance quality of the bound product. The heater 33 can be an electric heating element or an electric heating tube, both of which can achieve uniform heating of the riveting knife 32.

[0048] The frame 1 is provided with a base 42 for supporting the lower riveting table 34. The lower riveting table 34 has a cylindrical structure. The base 42 has a receiving hole 43 for accommodating the lower riveting table 34. The bottom of the lower riveting table 34 is provided with a central boss 44 and elastic arms 45 located on both sides of the central boss 44. Stress blocks 46 are accommodated between the central boss 44 and the elastic arms 45 on both sides. The stress blocks 46 abut against the central boss 44 and the elastic arms 45 respectively. The press-fit through hole 36 is set in the middle boss 44; after the press-fit knife 32 is inserted into the press-fit through hole 36, the middle boss 44 will transfer the force to the stress block 46, pushing the elastic arm 45 to abut against the hole wall of the receiving hole 43 to form a limit. Through the elastic abutment cooperation between the elastic arm 45 and the stress block 46, an elastic floating margin is provided for the lower press-fit table 34, which adaptively compensates for the press-fit position deviation, buffers the impact force, and ensures the coaxiality of the press-fit through hole 36 and the upper press-fit table 35.

[0049] In this embodiment, a base 42 is provided on the frame 1 to support the lower riveting platform 34. The lower riveting platform 34 is a cylindrical structure and is housed in the receiving hole 43 of the base 42. Stress blocks 46 are housed between the central boss 44 at the bottom of the lower riveting platform 34 and the elastic arms 45 on both sides. The stress blocks 46 abut against the central boss 44 and the elastic arms 45 respectively. The riveting through hole 36 is opened in the central boss 44. When the riveting knife 32 is inserted into the riveting through hole 36 to perform the riveting operation, the riveting knife 32 generates downward pressure on the central boss 44. The central boss 44 transmits the pressure to the stress blocks 46 on both sides. The stress blocks 46 apply an outward pushing force to the elastic arms 45, pushing the elastic arms 45 to open outward and abut against the hole wall of the receiving hole 43, thus limiting the lower riveting platform 34 and ensuring the stability of the lower riveting platform 34 during the riveting process.

[0050] The elastic abutment between the elastic arm 45 and the stress block 46 provides elastic floating margin for the lower riveting table 34. Compared with the fixed lower riveting table 34 in traditional technology, it can adaptively compensate for positional deviations during the riveting process, solving the riveting misalignment problem caused by installation errors and mechanism movement deviations in traditional technology. At the same time, it can buffer the impact force during riveting, reduce hard contact wear between the riveting table and the riveting cutter 32, and extend the service life of the component. The elastic floating design also ensures the coaxiality of the riveting through hole 36 and the upper riveting table 35, making the extrusion molding at both ends of the rivet tube more uniform and improving the riveting quality. The elastic arm 45 can be made of metal spring sheet material or elastic plastic material, both of which can achieve the required elastic floating effect.

[0051] A circular fitting gap 47 is provided between the lower riveting platform 34 and the wall of the receiving hole 43. The fitting gap 47 provides elastic floating space for the lower riveting platform 34. The base 42 includes a detachable main limiting platform 48 and a secondary limiting platform 49. The secondary limiting platform 49 and the main limiting platform 48 are combined to form a complete circular fitting hole 43. The detachable secondary limiting platform 49 is used to clean the residual paper scraps of the documents to be riveted that are received in the receiving hole 43. The central boss 44 is provided with threaded holes 51 on both sides of the riveting through hole 36. The central boss 44 is screwed to the base 42 through the threaded holes 51. A circular groove 52 is provided at the bottom of the receiving hole 43. A circular piece 53 is placed in the circular groove 52. The circular piece 53 cooperates with the riveting through hole 36 to abut and limit the cutting head of the riveting knife 32, thus limiting the downward stroke of the riveting knife 32.

[0052] In this embodiment, an annular fitting gap 47 is provided between the lower riveting platform 34 and the wall of the receiving hole 43, providing sufficient space for the opening and resetting of the elastic arm 45. This also further enhances the elastic floating range of the lower riveting platform 34, allowing it to better adapt to documents of different thicknesses and improving the equipment's versatility. Compared to traditional designs with no gap or excessively small gaps, this design prevents the elastic arm 45 from getting stuck against the wall of the receiving hole 43 when it opens. The base 42 adopts a detachable main limiting platform 48 and secondary limiting platform 49 combined structure, which together form the receiving hole 43 for accommodating the lower riveting platform 34. When paper scraps generated from punching and riveting accumulate in the receiving hole 43, the secondary limiting platform 49 can be disassembled separately for cleaning, without needing to disassemble the base 42 and the lower riveting platform 34 as a whole. Compared to the traditional integrated base 42 design, this design makes equipment maintenance more convenient and reduces maintenance time.

[0053] The central boss 44 is screwed to the base 42 through the threaded holes 51 on both sides, which can realize the precise installation and fixation of the lower riveting table 34 and prevent the lower riveting table 34 from shifting during the riveting process. The circular groove 52 at the bottom of the receiving hole 43 contains a circular piece 53. The circular piece 53 cooperates with the riveting through hole 36. When the riveting knife 32 is pressed down, the knife head abuts against the circular piece 53, which can precisely limit the downward stroke of the riveting knife 32. Compared with the limit method of limit by limit switch in traditional technology, mechanical limit is more direct and reliable, and can effectively avoid the problem of excessive pressing of the riveting knife 32 leading to deformation of the rivet tube and damage to the riveting table. The circular piece 53 can be made of wear-resistant rubber or hard plastic, both of which can achieve effective knife head limit and buffer.

[0054] The frame 1 is provided with a punching table 54 for carrying the document to be punched. The support frame 17 is provided with a fixing rod 55 and a pressure plate 56 set on the fixing rod 55. The pressure plate 56 is provided with a secondary guide sleeve 57 that slides with the guide post 18 and a clearance groove 58 for avoiding the lifting and lowering of the drill bit 8. A telescopic spring 59 is provided between the pressure plate 56 and the fixing rod 55 to provide a downward elastic preload, so that the pressure plate 56 forms an elastic floating stroke relative to the support frame 17, thereby pressing the paper before the drill bit 8 during synchronous lifting and lowering, avoiding interference between the pressure plate 56 and the punching table 54.

[0055] In this embodiment, a punching table 54 is provided on the frame 1 to support the documents to be punched. A pressure plate 56 is mounted on the fixing rod 55 on the support frame 17. The pressure plate 56 has a clearance groove 58, which provides clearance space for the drill 8 when it is raised and lowered for punching. Compared with the conventional method of separating the pressure plate 56 and the drill 8, this avoids interference between the pressure plate 56 and the drill 8, ensuring smooth punching. A secondary guide sleeve 57 is provided on the pressure plate 56, which slides with the guide post 18 on the frame 1. This provides precise guidance for the raising and lowering of the pressure plate 56, preventing the pressure plate 56 from shifting or tilting during movement, and ensuring uniform paper pressing. A telescopic spring 59 is provided between the pressure plate 56 and the fixed rod 55. The telescopic spring 59 provides a downward elastic preload to the pressure plate 56, so that the pressure plate 56 forms an elastic floating stroke relative to the support frame 17. When the punching mechanism 2 descends, the pressure plate 56 can contact the document before the drill bit 8 under the action of the telescopic spring 59 and apply a uniform paper pressing force to the document. Compared with the rigid pressure plate 56 design in traditional technology, the elastic pressure plate 56 can adapt to documents of different thicknesses, and the paper pressing effect is better. It can effectively prevent paper displacement and wrinkling during punching and improve punching accuracy.

[0056] After the pressure plate 56 presses the paper, the punching mechanism 2 continues to descend, the telescopic spring 59 is compressed, and the drill bit 8 passes through the clearance groove 58 to punch holes in the document. After punching is completed, the punching mechanism 2 rises, the telescopic spring 59 returns to its original position, and the pressure plate 56 rises accordingly to release the document. The entire process does not require separate control of the pressure plate 56, realizing the linkage between paper pressing and punching, simplifying the control process. At the same time, the elastic floating of the pressure plate 56 can avoid hard contact interference with the punching table 54, reducing component wear.

[0057] The frame 1 has a support foot 61 at its bottom. The support foot 61 includes a columnar main body 62. The upper part of the main body 62 has a screw hole 63 and a positioning boss 64. The positioning boss 64 has a limiting post 65 and a hollow rib group 66. The screw hole 63 is used to screw the support foot 61 to the frame 1. The positioning boss 64 is adapted to the positioning groove at the bottom of the frame 1 to realize the quick positioning and assembly of the support foot 61. The limiting post 65 is used to insert into the limiting hole of the frame 1 to prevent the support foot 61 from rotating and loosening. The hollow rib group 66 reduces the weight of the support foot 61 while enhancing its structural rigidity.

[0058] In this embodiment, the support foot 61 at the bottom of the frame 1 is screwed to the frame 1 through the screw hole 63 on the upper part of the main body 62, realizing a reliable connection between the support foot 61 and the frame 1. The positioning boss 64 on the main body 62 can be adapted to the positioning groove at the bottom of the frame 1, enabling quick positioning when assembling the support foot 61. Compared with the support foot 61 without a positioning structure in the traditional technology, this can improve assembly efficiency and reduce assembly errors. The limiting post 65 provided on the positioning boss 64 can be inserted into the limiting hole of the frame 1 after the support foot 61 is assembled. This can effectively prevent the support foot 61 from rotating and loosening due to vibration during equipment operation, ensuring the connection stability of the support foot 61. Compared with the use of anti-loosening nuts 9 in the traditional technology, this eliminates the need for additional anti-loosening components and simplifies the assembly structure.

[0059] The hollow ribs 66 on the positioning boss 64 reduce the overall weight of the support leg 61 while enhancing its structural rigidity. Compared to the solid structure of the support leg 61 in traditional technology, this design achieves a balance between lightweight and high rigidity, reducing the overall weight of the equipment while increasing the load-bearing capacity of the support leg 61. The hollow ribs 66 also effectively buffer the vibrations generated during equipment operation, reducing the transmission of vibrations to the desktop, lowering equipment operating noise, and preventing vibrations from causing loosening of components on the frame 1, thus improving the overall operational stability of the equipment. The main body 62 of the support leg 61 can be made of plastic injection molding or metal die casting. The number and arrangement of the hollow ribs 66 can be adjusted according to actual support requirements, achieving the desired weight reduction, rigidity increase, and vibration damping effects.

[0060] The working principle of this invention is as follows: After the binding machine is started, the drive component 5 transmits power to the reduction gear 6 through the worm gear assembly, directly driving the drill sleeve 7, which is fixed coaxially with it, to rotate. This eliminates the traditional belt / gear transmission, significantly improving transmission accuracy and efficiency. When the drill sleeve 7 rotates, its top lead screw 11 is screwed into the irregular nut 9 on the frame 1, converting the rotational motion into the linear lifting motion of the drilling mechanism 2. The triangular mounting part 68 of the irregular nut 9 is rigidly fixed, and the axial opening slot compensates for assembly errors. While the drilling mechanism 2 is lifting, the transmission gear 12 of the bidirectional lifting component 4 meshes with the racks 13 on both sides, synchronously driving the riveting mechanism 3 to lift in the opposite direction, realizing the linkage operation of drilling and riveting without additional drive. When the support frame 17 lifts and lowers with the drilling mechanism 2, its upper inclined guide 72 pushes the roller 73, causing the contact rod 74 to swing, triggering the proximity sensor 75 to provide a position signal. This, in conjunction with the controller on the frame 1, completes the precise limit of the drilling stroke and the start / stop and power supply control of the whole machine, realizing automated and safe operation.

[0061] During the drilling process, the support frame 17 achieves precise guidance through the sliding cooperation between the guide post 18 and the main guide sleeve 19. The internal limiting bearing 21 cooperates with the stepped shaft structure 22 of the drill sleeve 7 to limit the drill sleeve 7 in both axial and radial directions, preventing the drill sleeve 7 from moving or swaying. The elastic pressure plate 56 on the support frame 17 is guided by the auxiliary guide sleeve 57 and the guide post 18. The preload provided by the telescopic spring 59 allows the pressure plate 56 to press the paper before the drill bit 8. The avoidance groove 58 avoids interference with the drill bit 8, effectively preventing paper displacement. The debris generated during drilling enters the chip discharge hole 24 through the hollow drill bit 8 and is guided into the chip discharge channel of the support frame 17 along the guide groove 25 with varying slopes on the drill sleeve 7. With the help of the height difference between the chip discharge space 26 and the chip discharge section 27 and the guide slope 28, the debris is quickly discharged by gravity, avoiding blockage and affecting equipment operation. During riveting, the heater 33 heats the riveting knife 32 and transfers the heat to the upper riveting table 35. The upper and lower riveting tables 34 close in opposite directions with the mechanism. The double support surfaces at their ends stably support the riveting tube. The disc-shaped annular surface 38 uniformly extrudes the end of the hot melt riveting tube, causing it to fold and form a closed annular structure, ensuring the riveting strength and forming regularity.

[0062] The lower riveting station 34 is housed in the receiving hole 43 of the base 42. When the riveting knife 32 is inserted, the central boss 44 transmits pressure to the stress block 46, pushing the elastic arm 45 to abut against the wall of the receiving hole 43 to form a limit. The cooperation between the elastic arm 45 and the stress block 46 provides elastic floating margin for the lower riveting station 34, adaptively compensating for riveting position deviation, buffering impact force, and ensuring the coaxiality of the riveting through hole 36 and the upper riveting station 35. The receiving gap 47 provides floating space for the lower riveting station 34. The detachable secondary limit platform 49 facilitates cleaning of paper scraps. The circular piece 53 at the bottom of the receiving hole 43 precisely limits the downward stroke of the riveting knife 32 to prevent overpressure damage to the parts. When the equipment is running, the support feet 61 at the bottom of the frame 1 achieve quick positioning and assembly and prevent loosening through the positioning boss 64 and the limiting post 65. The hollow rib group 66 reduces weight while increasing structural rigidity, effectively buffering the vibration of the equipment and reducing noise and loosening of parts. The various structures form a stable system through the guidance of the guide post 18 and the guide sleeve, ensuring the accuracy, continuity and reliability of the whole process operation.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A binding machine with an automatic mechanism featuring a punching and riveting structure, characterized in that: The system includes a frame (1), a drilling mechanism (2) and a riveting mechanism (3) mounted on the frame (1), and a bidirectional lifting assembly (4) that is connected between the drilling mechanism (2) and the riveting mechanism (3). The drilling mechanism (2) includes a support frame (17) mounted on the frame (1), a drive component (5) mounted on the support frame (17), a worm gear connected to the output shaft of the drive component (5), a reduction gear (6) rotatably mounted on the support frame (17) and meshing with the worm gear, and a reduction gear... The gear (6) fixes the drill sleeve (7) and the drill bit (8) is fixed to the drill sleeve (7). The frame (1) is fixed with a nut (9). The drill sleeve (7) is fixed with a screw rod (11) that is screwed to the nut (9). The drive unit (5) drives the drill sleeve (7) to rotate via the reduction gear (6). The drill sleeve (7) drives the drilling mechanism (2) to rise and fall through the screw rod (11) and the nut (9). The rising and falling movement of the drilling mechanism (2) drives the riveting mechanism (3) to rise and fall in the opposite direction through the bidirectional lifting assembly (4).

2. The binding machine with an automatic mechanism featuring a punching and riveting structure according to claim 1, characterized in that: The bidirectional lifting assembly (4) includes a transmission gear (12) rotatably mounted on the frame (1) and two racks (13) meshing on both sides of the transmission gear (12) and parallel to each other. The two racks (13) are respectively connected to the drilling mechanism (2) and the riveting mechanism (3). The frame (1) is provided with a guide hole (14) for guiding one rack (13) to pass through and a limiting member (15) parallel to the extension direction of the rack (13). The limiting member (15) is used to guide and limit the lifting of the other rack (13).

3. A binding machine with an automatic mechanism featuring a punching and riveting structure according to claim 1, characterized in that: The output end of the drive unit (5) is provided with a worm gear assembly. The worm gear assembly includes a transmission worm (16) disposed on the output shaft of the drive unit (5) and a worm wheel that is connected to the transmission worm (16) in a transmission manner. The worm wheel is the reduction gear (6), and the drill sleeve (7) is coaxially fixed inside the worm wheel.

4. A binding machine with an automatic mechanism featuring a punching and riveting structure according to claim 3, characterized in that: The frame (1) is provided with a guide post (18), and the support frame (17) is provided with a main guide sleeve (19) that slides with the guide post (18). The support frame (17) slides with the frame (1) through the guide post (18) and the main guide sleeve (19). The support frame (17) is fixedly connected to the fixed ends of the bidirectional lifting assembly (4) and the drive component (5) respectively. A limit structure is provided between the drill sleeve (7) and the support frame (17). The limit structure includes a limit bearing (21) sleeved on the upper and lower ends of the drill sleeve (7). The drill sleeve (7) is provided with a stepped shaft structure (22). The inner ring of the limit bearing (21) abuts against the stepped surface of the drill sleeve (7) for limit positioning. The inner wall of the support frame (17) is provided with a stepped boss (23) that matches the outer ring of the limit bearing (21). The limit bearing (21) and the stepped boss (23) cooperate to achieve bidirectional axial and radial limit positioning of the drill sleeve (7).

5. A binding machine with an automatic mechanism featuring a punching and riveting structure according to claim 1, characterized in that: The drilling mechanism (2) also includes a chip removal structure. The drill bit (8) has a hollow interior. The chip removal structure includes a chip removal hole (24) on the drill sleeve (7) that communicates with the hollow structure, a chip removal channel on the support frame (17) that communicates with the chip removal hole (24), and a guide groove (25) on the drill sleeve (7). The guide groove (25) communicates with the chip removal hole (24). The chip removal channel includes a chip removal space (26) and a chip removal part (27). A guide slope (28) is provided between the chip removal space (26) and the chip removal part (27). The lowest horizontal plane of the chip removal space (26) is higher than the highest horizontal plane of the chip removal part (27). The guide groove (25) includes an upper inclined surface (29) and a lower inclined surface (31). The chip removal hole (24) is connected to the lower inclined surface (31). The slope of the upper inclined surface (29) is greater than the slope of the lower inclined surface (31). The chip removal structure collects drilling chips through the hollow drill bit (8), and guides them into the chip removal space (26) through the chip removal hole (24) and the guide groove (25). Then, the chips are quickly and directionally discharged by gravity through the height difference of the guide inclined surface (28) and the slope difference of the guide groove (25).

6. A binding machine with an automatic mechanism featuring a punching and riveting structure according to claim 1, characterized in that: The riveting mechanism (3) includes a riveting knife (32), a heater (33) connected to the riveting knife (32), a lower riveting platform (34), and an upper riveting platform (35) disposed on the riveting knife (32). The upper riveting platform (35) and the lower riveting platform (34) are arranged opposite to each other, and the structures of the opposite end faces of the upper riveting platform (35) and the lower riveting platform (34) are identical. The end faces of the upper riveting platform (35) and the lower riveting platform (34) are provided with a riveting through hole (36), an inner ring support surface (37), a disc-shaped ring surface (38), an outer ring support surface (39), and a conical ring surface (41) in sequence from the inside to the outside. The outer ring support surface (39) is a conical ring surface (41). The top surface of the inner ring support surface (37) and the outer ring support surface (39) are coplanar. The disc-shaped ring surface (38) is an inward concave structure that transitions from the inner ring support surface (37) to the outer ring support surface (39) in an arc shape. The inner ring support surface (37) and the outer ring support surface (39) of the upper riveting table (35) and the lower riveting table (34) are used to support the upper and lower end surfaces of the document to be bound. The disc-shaped ring surface (38) is used to abut the end of the rivet tube. After the heater (33) heats the riveting knife (32), the upper riveting table (35) and the lower riveting table (34) close the mold facing each other. The disc-shaped ring surface (38) at both ends folds the rivet tube end after hot melting to form a closed ring riveting of the rivet tube.

7. A binding machine with an automatic mechanism featuring a punching and riveting structure according to claim 6, characterized in that: The frame (1) is provided with a base (42) for supporting the lower riveting table (34). The lower riveting table (34) has a cylindrical structure. The base (42) has a receiving hole (43) for accommodating the lower riveting table (34). The bottom of the lower riveting table (34) is provided with a central boss (44) and elastic arms (45) located on both sides of the central boss (44). Stress blocks (46) are arranged between the central boss (44) and the elastic arms (45) on both sides. The stress blocks (46) are respectively connected to the central boss (44) and the elastic arms (45). The riveting through hole (36) is located on the central boss (44). After the riveting knife (32) is inserted into the riveting through hole (36), the central boss (44) will transfer the force to the stress block (46), pushing the elastic arm (45) to abut against the wall of the receiving hole (43) to form a limit. Through the elastic abutment cooperation between the elastic arm (45) and the stress block (46), the lower riveting table (34) is provided with elastic floating margin, adaptively compensating for the riveting position deviation, buffering the impact force, and ensuring the coaxiality of the riveting through hole (36) and the upper riveting table (35).

8. A binding machine with an automatic mechanism featuring a punching and riveting structure according to claim 7, characterized in that: An annular fitting gap (47) is provided between the lower riveting station (34) and the wall of the receiving hole (43). The fitting gap (47) provides elastic floating space for the lower riveting station (34). The base (42) includes a detachable main limiting platform (48) and a secondary limiting platform (49). The secondary limiting platform (49) and the main limiting platform (48) are assembled to form a complete annular fitting hole (43). The detachable secondary limiting platform (49) is used to clean the contents of the receiving hole (43). The document to be riveted has residual paper scraps. The central boss (44) has threaded holes (51) on both sides of the riveting through hole (36). The central boss (44) is screwed to the base (42) through the threaded holes (51). The bottom of the receiving hole (43) is provided with a circular groove (52). A circular piece (53) is placed in the circular groove (52). The circular piece (53) cooperates with the riveting through hole (36) to abut and limit the cutting head of the riveting knife (32) and limit the downward stroke of the riveting knife (32).

9. A binding machine with an automatic mechanism featuring a punching and riveting structure according to claim 4, characterized in that: The frame (1) is provided with a punching table (54) for carrying the documents to be punched. The support frame (17) is provided with a fixed rod (55) and a pressure plate (56) on the fixed rod (55). The pressure plate (56) is provided with a secondary guide sleeve (57) that slides with the guide post (18) and a clearance groove (58) for avoiding the lifting and lowering of the drill bit (8). A telescopic spring (59) is provided between the pressure plate (56) and the fixed rod (55) to provide a downward elastic preload, so that the pressure plate (56) forms an elastic floating stroke relative to the support frame (17), thereby pressing the paper before the drill bit (8) during synchronous lifting and lowering, avoiding interference between the pressure plate (56) and the punching table (54).

10. A binding machine with an automatic mechanism featuring a punching and riveting structure according to claim 1, characterized in that: The frame (1) is provided with a support foot (61) at the bottom. The support foot (61) includes a main body (62) with a columnar structure. The upper part of the main body (62) is provided with a screw hole (63) and a positioning boss (64). The positioning boss (64) is provided with a limiting post (65) and a hollow rib group (66). The screw hole (63) is used to screw the support foot (61) to the frame (1). The positioning boss (64) is adapted to the positioning groove at the bottom of the frame (1) to realize the quick positioning and assembly of the support foot (61). The limiting post (65) is used to insert into the limiting hole of the frame (1) to prevent the support foot (61) from rotating and loosening. The hollow rib group (66) reduces the weight of the support foot (61) while enhancing its structural rigidity.

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