An automatic punch press with a protective structure

Abstract

This invention belongs to the field of punching technology, specifically an automatic punching machine with a protective structure. It includes a hydraulic punching machine body with a cross-shaped rib plate on its worktable. A lower die is mounted on the top of the cross-shaped rib plate. A guide plate is provided on the top of the cross-shaped rib plate and along the outer periphery of the lower die. A guide groove for guiding the profile feed is formed on the guide plate. A feeding pipe is connected above the guide groove, and multiple profiles to be processed are stacked inside the feeding pipe. This invention achieves highly efficient and continuous automatic production. In the feeding stage, the die height adjustment mechanism of the hydraulic punching machine body drives the pusher plate to complete the feeding action. The feeding process is mechanically linked and seamlessly connected with the stamping action, requiring no additional power source. This structure simplifies the equipment and, by avoiding the time-consuming separate feeding process, effectively shortens the processing cycle of a single profile, significantly improving the overall stamping efficiency.

Description

Technical Field

[0001] This invention belongs to the field of punch press technology, specifically an automatic punch press with a protective structure. Background Technology

[0002] The automated punch press deeply integrates a feeder, robotic arm, and PLC control system to meticulously construct a highly intelligent stamping production unit. This unit, through the coordinated operation of its components, achieves continuous and automated stamping processes. During system operation, manual intervention is significantly reduced, effectively minimizing production fluctuations caused by human factors and greatly improving production efficiency. Simultaneously, the automated operation mode greatly enhances operational safety and reduces potential safety risks. This intelligent stamping production unit fully meets the stringent standards of modern manufacturing for high-precision, high-speed production, providing solid technical support for the high-quality development of the manufacturing industry.

[0003] Existing technologies disclose several invention patents in the field of punch press technology. Among them, invention patent with publication number CN202220151340.4 discloses an automatic feeding structure for a high-speed punch press, including a conveyor belt and a protective plate. The inner wall of the protective plate is provided with a guide plate located above the conveyor belt and used to guide the material via a rotating shaft. The end of the guide plate is provided with a baffle plate via a rotating shaft. An adjusting component for adjusting the angle of the guide plate is provided between the baffle plate and the protective plate. The adjusting component includes a threaded rod threaded to the protective plate, the end of which is slidably connected to the baffle plate. The end of the protective plate is provided with a support plate flush with the conveyor belt. The support plate is provided with a push plate for pushing the material onto the processing table of the punch press, which facilitates the self-queueing of multiple materials, so that the materials enter the support plate one by one. Once inside, the push plate pushes the materials one by one onto the processing table of the punch press for processing, avoiding the hazards of manual placement of materials onto the processing table by the operator.

[0004] Current automatic punching technology still mainly relies on robotic arms or independent automated equipment to achieve automation of single links, and has not yet formed a highly integrated collaborative system. This split structure results in low overall system automation and integration, poor coordination between links, limited level of intelligence, and insufficient consideration for comprehensive protection of equipment and workpieces, which restricts the further improvement of the stability and efficiency of the production system.

[0005] Based on this, the present invention designs an automatic punch press with a protective structure to solve the above problems. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, this invention proposes an automatic punch press with a protective structure. This invention primarily addresses the problems of existing automatic punch presses, including low automation and integration, poor coordination between different stages, insufficient intelligence, inadequate protection of equipment and workpieces, and lack of ease of maintenance.

[0007] The technical solution adopted by the present invention to solve its technical problem is: an automatic punch press with a protective structure, including a hydraulic punch press body, a cross-shaped rib plate is provided on the worktable of the hydraulic punch press body, and a lower die is installed on the top of the cross-shaped rib plate; a guide plate is provided on the top of the cross-shaped rib plate and along the outer periphery of the lower die, and a guide groove for guiding the profile feeding is opened on the guide plate, and a feeding pipe is connected above the guide groove, and multiple profiles to be processed are stacked in the feeding pipe;

[0008] A pusher plate is slidably arranged in the guide groove to push the profile to move along the guide groove. A linear guide rail is also installed on the top of the cross-shaped rib plate. A sliding slide is fitted on the linear guide rail. A first right-angle frame is fixed on the top of the slide. The end of the pusher plate is connected to the top of the first right-angle frame. A push-pull shaft is rotatably connected to the first right-angle frame. The other end of the push-pull shaft is rotatably connected to a second right-angle frame. The second right-angle frame is connected to the die height adjustment mechanism of the hydraulic punch press body.

[0009] The corners of the inner wall of the feed tube are rounded, and the two rounded corners have a common center.

[0010] Preferably, the top of the feeding pipe is provided with a convex-shaped groove, and the side end of the feeding pipe is provided with a first notch corresponding to the position of the groove. A placement plate is slidably assembled in the groove, and the side end of the placement plate is provided with a second notch corresponding to the first notch. The placement plate passes through the first notch through its second notch and is quickly inserted into the groove.

[0011] Preferably, the side end of the feed pipe has an insertion interface at the bottom of the inner wall of the chute, a support sleeve is connected to the placement plate, a bearing plate is inserted into the support sleeve and the insertion interface, one end of the bearing plate extends into the feed pipe, and the other end is connected to the support sleeve by an anti-detachment rope.

[0012] Preferably, at the bend of the feed tube, electromagnet No. 1 and electromagnet No. 2 are respectively installed on the two opposite sides.

[0013] Preferably, an ultrasonic sensor is installed on the upper side of the bend in the feed pipe.

[0014] Preferably, a protective cover is provided on the top of the cross-shaped stiffener and around the periphery of the lower mold, and multiple springs are arranged between the inner wall of the protective cover and the cross-shaped stiffener.

[0015] Preferably, the cross-shaped rib plate has multiple threaded grooves, and each threaded groove is threadedly connected to a first threaded post. The end of the first threaded post is provided with a first combination groove. The protective cover is provided with threaded holes corresponding to the positions of each threaded groove. Each threaded hole is threadedly connected to a second threaded post. One end of the second threaded post is provided with an internal hexagonal groove, and the other end is provided with a second combination groove. The two ends of the spring are respectively accommodated and fixed in the first combination groove and the second combination groove.

[0016] Preferably, the protective cover is equipped with multiple vibration sensors, the vibration sensors being model VDM28-4P-P1.

[0017] Preferably, a third right-angle frame is connected to the first right-angle frame, and a material feeding port is opened on the other side of the protective cover corresponding to the third right-angle frame. A profile gripping mechanism is provided at the end of the third right-angle frame near the material feeding port.

[0018] Preferably, the gripping mechanism includes a No. 3 electromagnet and a sponge suction cup. The sponge suction cup is located at the bottom of the No. 3 right-angle frame, and a No. 3 electromagnet is also installed on the sponge suction cup.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. In this invention, during the loading stage, the die height adjustment mechanism of the hydraulic press body drives the pusher plate to complete the loading action. The loading process is mechanically linked and seamlessly connected with the stamping action, without the need for an additional power source. This structure simplifies the equipment and effectively shortens the processing cycle of a single profile by avoiding the time-consuming loading process, thus significantly improving the overall stamping efficiency. During the unloading stage, the unloading operation is also completed by the die height adjustment mechanism through the linkage of the No. 3 right-angle frame and the No. 3 electromagnet, realizing that the three major processes of loading, stamping, and unloading share the same power source, further simplifying the equipment structure and reducing manufacturing costs and space occupation.

[0021] 2. In this invention, the detachable structure of the placement plate, combined with the alignment of the first and second notches, enables lateral loading of the profile. This design avoids the interference problem of traditional top-down loading, making operation more convenient. The cooperation between the bearing plate and the anti-detachment rope provides lateral positioning support for the profile, ensuring neat stacking and preventing parts loss, while facilitating quick resetting. During the lateral loading process, the profile enters the feed tube through the smooth first notch and groove, avoiding friction and collision with the edge of the tube opening, effectively protecting the inner wall of the feed tube and reducing wear and deformation.

[0022] 3. In this invention, the concentric rounded corner design at the corner of the feed pipe reduces the downward resistance and jamming risk of the profile, ensuring continuous and stable material conveying. In the vertical section, the No. 1 electromagnet and the No. 2 electromagnet work together to correct the levelness of the profile in real time, so that it enters the guide trough smoothly in a flat posture, effectively preventing blockage caused by tilting and improving the positioning accuracy of entering the trough.

[0023] 4. In this invention, the ultrasonic sensor enables real-time, non-contact monitoring of the quantity of profiles inside the feeding tube. Its threshold alarm mechanism can effectively prevent production interruptions caused by material shortages, improve equipment utilization and production stability, and reduce the need for manual inspection. The vibration sensor monitors the impact vibration of the protective cover in real time and can trigger an alarm immediately. This proactive early warning mechanism allows staff to intervene before the protective cover fails, avoiding more serious equipment damage or safety accidents, and improving the protection level of the protective structure and stamping equipment.

[0024] 5. In this invention, the slidable protective cover around the lower die is connected to the cross-shaped rib plate by multiple springs, which can effectively block the profile that pops out during stamping, improve the safety of operation. The elastic support provided by the springs allows the protective cover to quickly reset after being impacted, ensuring the continuity of protection. The protective cover is connected to the cross-shaped rib plate by the linkage structure of the first threaded post, the second threaded post and the spring, which realizes quick disassembly and assembly and is easy to replace. While providing a stable connection, the springs can also buffer the impact force, taking into account both connection stability and impact resistance, and reducing maintenance costs.

[0025] 6. In this invention, the magnetic adsorption method of the No. 3 electromagnet is used for non-contact material feeding, which avoids mechanical damage to the surface of the stamped profile and ensures the quality of the finished product. The sponge suction cup at the bottom of the No. 3 electromagnet provides flexible cushioning, prevents hard collisions with the profile, protects the structure and magnetic components of the No. 3 electromagnet, and extends its service life. At the same time, its self-adhesive bonding characteristics enhance the adsorption stability and ensure the smoothness and accuracy of the material feeding operation. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the protective cover in this invention;

[0029] Figure 3 This is the present invention. Figure 2 A structural diagram from another perspective;

[0030] Figure 4 This is the present invention. Figure 2A top-down structural diagram;

[0031] Figure 5 This is the present invention. Figure 2 A cross-sectional view of the No. 2 threaded column;

[0032] Figure 6 This is the present invention. Figure 2 A cross-sectional view of the feed pipe;

[0033] Figure 7 This is a schematic diagram of the feed tube structure in this invention;

[0034] Figure 8 This is a schematic diagram of the structure of the placement plate in this invention;

[0035] Figure 9 This is the present invention. Figure 5 Enlarged structural diagram at point A;

[0036] Figure 10 This is the present invention. Figure 2 A three-dimensional structural diagram of the No. 3 electromagnet and sponge suction cup viewed from below;

[0037] Figure 11 This is the present invention. Figure 3 Enlarged structural diagram at point B;

[0038] Figure 12 This is the present invention. Figure 6 Enlarged structural diagram at point C;

[0039] In the diagram: 1. Main body of the hydraulic punch press; 2. Cross-shaped rib plate; 3. Lower die; 4. Guide plate; 5. Push plate; 6. Linear guide rail; 7. Slide; 8. First right-angle frame; 9. Connecting rod; 10. Second right-angle frame; 11. Feed tube; 12. Slide groove; 13. First notch; 14. Placement plate; 15. Second notch; 16. Feed port; 17. Support sleeve; 18. Bearing plate; 19. Anti-detachment rope; 20. 21. Electromagnet No. 1; 22. Electromagnet No. 2; 23. Ultrasonic sensor; 24. Protective cover; 25. Threaded groove; 26. Threaded post No. 1; 27. Threaded post No. 2; 28. Socket hexagonal slot; 29. ​​Spring; 30. Right angle bracket No. 3; 31. Electromagnet No. 3; 32. Sponge suction cup; 33. Combination slot No. 1; 34. Combination slot No. 2; 35. Plug-in interface; 36. Vibration sensor. Detailed Implementation

[0040] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0041] like Figures 1 to 12As shown, an automatic punch press with a protective structure includes a hydraulic punch press body 1. A cross-shaped rib plate 2 is provided on the worktable of the hydraulic punch press body 1, and a lower die 3 is installed on the top of the cross-shaped rib plate 2. A guide plate 4 is provided on the top of the cross-shaped rib plate 2 and along the outer periphery of the lower die 3. A guide groove for guiding the profile feeding is opened on the guide plate 4. A feeding pipe 11 is connected above the feeding groove, and multiple profiles to be processed are stacked in the feeding pipe 11.

[0042] A pusher plate 5 is slidably installed in the guide groove to push the profile to move along the guide groove. A linear guide rail 6 is also installed on the top of the cross-shaped rib plate 2. A sliding slide 7 is fitted on the linear guide rail 6. A first right-angle frame 8 is fixed on the top of the slide 7. The end of the pusher plate 5 is connected to the top of the first right-angle frame 8. A push-pull shaft is rotatably connected to the first right-angle frame 8. The other end of the push-pull shaft is rotatably connected to a second right-angle frame 10. The second right-angle frame 10 is connected to the mold height adjustment mechanism of the hydraulic punch body 1.

[0043] The corners of the inner wall of the feed tube 11 are rounded, and the two rounded corners have a common center. When the profile falls through the corner in the feed tube 11, it can smoothly transition to the vertical section of the feed tube 11 by utilizing the concentric rounded corner structure designed there. The concentric rounded corner structure at the corner can reduce the downward resistance and jamming risk of the profile, and ensure continuous material conveying.

[0044] In this specific embodiment: After stacking multiple profiles to be stamped on the feed tube 11, the bottommost profile first enters the guide groove of the guide plate 4. At this time, the die height adjustment mechanism of the hydraulic press body 1 is controlled to raise the upper die. During the raising process, the die height adjustment mechanism drives the second right-angle frame 10 to rise, and pulls the connecting rod 9 through the second right-angle frame 10. One end of the connecting rod 9 rotates around the second right-angle frame 10, and the other end rotates around the first right-angle frame 8, transmitting the pulling force to the second right-angle frame 10. The second right-angle frame 10 then drives the slide 7 to move along the linear slide rail, thereby directionally pushing the pusher plate 5 to slide in the guide groove, pushing the profile that has entered the guide groove into the lower die 3 along the guide groove. The upper die is driven downward by the rear control die height adjustment mechanism to complete the stamping process of the profile. During this process, the pusher plate 5 returns under the drive of the die height adjustment mechanism. At the same time, the profile at the lowest position in the feed tube 11 automatically falls into the guide groove, waiting for the next push. This cycle is repeated to realize the automatic continuous feeding of the profile. The pusher component is driven by the die height adjustment mechanism of the hydraulic press itself, without the need for an additional feeding power source. The mechanical linkage between feeding and stamping actions is realized, simplifying the equipment structure. The feeding action and the die height adjustment action of the press are seamlessly connected, and there is no separate feeding process that takes time. This shortens the processing cycle of a single profile and improves the overall stamping efficiency.

[0045] Specifically, the top of the feed tube 11 is provided with a U-shaped groove 12. The side end of the feed tube 11 is provided with a first notch 13 corresponding to the position of the groove 12. A placement plate 14 is slidably installed in the groove 12. The side end of the placement plate 14 is provided with a second notch 15 corresponding to the first notch 13. The placement plate 14 passes through the first notch 13 through its second notch 15 and is quickly inserted into the groove 12. The bottom of the side end of the feed tube 11 corresponding to the inner side wall of the groove 12 is provided with an insertion interface 35. A support sleeve 17 is connected to the placement plate 14. A carrier plate 18 is inserted into the support sleeve 17 and the insertion interface 35. One end of the carrier plate 18 extends into the feed tube 11.

[0046] In this specific embodiment, before loading multiple profiles to be stamped into the feed tube 11 in batches, firstly, the placement plate 14 is lifted up so that the second notch 15 on its side is fully aligned with the first notch 13 pre-set on the side wall of the feed tube 11. Then, the placement plate 14 is pulled out completely laterally and removed. Next, to ensure that the profiles fall smoothly and avoid jamming, the bearing plate 18 is pushed inward so that it slides into place along the support sleeve 17 and the insertion interface 35. At this time, the operator can take the profiles that have been neatly stacked on the bearing plate 18 as a group, and pass them through the aligned first notch 13 and second notch 15 laterally in sequence. The bearing plate 18 is then pulled out smoothly. The lower end of the placement plate 14 slides along the groove 1. 2. Slide to the bottom and fit tightly against the inner wall of the feeding tube 11. The stamped profile slides smoothly into the feeding tube 11. This side loading method avoids the interference and collision between the profile and the edge of the tube when feeding from top to bottom in the traditional method. It realizes efficient and batch loading of profiles from the side. At the same time, it avoids friction and collision between the profile and the inlet of the feeding tube 11 during the loading process, effectively protecting the integrity of the inner wall of the feeding tube. By ensuring that the bearing plate 18 is completely pulled out and the bottom of the placement plate 14 is tightly in place, the profile falls smoothly and without obstruction, fundamentally preventing jamming. The whole system takes into account the filling efficiency, the reusability of components and the long service life of the equipment, ensuring a continuous and fast automated feeding process.

[0047] Specifically, the other end of the bearing plate 18 is secured to the support sleeve 17 by a non-elastic anti-slip rope 19.

[0048] Specifically, in this embodiment, the bearing plate 18 is pulled outward smoothly. Under the restriction of the anti-detachment rope 19, the bearing plate 18 will not completely detach from the support sleeve 17. This ensures that it can be smoothly reset and facilitates the next assembly, and can also effectively prevent parts from being lost or misaligned.

[0049] Specifically, at the bend of the feed tube 11, electromagnet No. 1 20 and electromagnet No. 21 are respectively installed on the two opposite sides.

[0050] In this specific implementation: After the profile falls into the vertical section within the feeding pipe 11, the system simultaneously activates electromagnet 20 (No. 1) and electromagnet 21 (No. 2). These two electromagnets work together to correct the profile's levelness. The leveling mechanism primarily relies on the lateral attractive force applied by electromagnets 20 and 21 to the profile. When the profile tilts during its descent in the vertical section, electromagnets 20 and 21, based on the profile's falling state, use differentiated magnetic pulling forces to ensure that the lower side of the profile is subjected to the lateral attractive force of electromagnet 20, thus delaying the tilting of that side. The vertical falling speed is controlled, while the higher side is held in place by electromagnet 21, thereby achieving dynamic adjustment of the profile's horizontal posture. This vertical motion adjustment based on lateral magnetic pulling enables the profile to gradually recover and maintain a horizontal posture during continuous falling, stably entering the guide chute and effectively preventing blockage caused by tilting. Through the coordinated work of both, the system can adjust the profile's posture in the vertical section in real time, ensuring the stable operation of the automatic feeding process and facilitating high-efficiency, uninterrupted automated stamping operations.

[0051] Specifically, an ultrasonic sensor 22 is installed on the upper side of the bend of the feed pipe 11. The ultrasonic sensor 22 is model UC-GM-IUR-V.

[0052] Specifically, in this embodiment: At the bottom of the No. 3 right-angle frame 30, a No. 3 electromagnet 31 is installed, and a sponge suction cup 32 is set directly below it. Directly below the sponge suction cup 32, an ultrasonic sensor 22 emits sound waves into the feed tube 11 and receives the echoes. When no profile to be processed is detected, the system automatically triggers an alarm to remind the staff to replenish the profile in time, thereby ensuring the continuity and controllability of the stamping feeding process. This monitoring mechanism can not only avoid production interruptions due to material shortage through threshold warnings, and improve equipment utilization and production cycle stability; more importantly, timely replenishment can keep a large amount of profile in the feed tube 11, thereby reducing the falling space of newly replenished profiles, effectively preventing tilting and jamming during vertical falling, significantly improving the smoothness and reliability of feeding, further reducing the need for manual intervention, and enhancing the overall level of automation management.

[0053] Specifically, a protective cover 23 is provided on the top of the cross-shaped rib plate 2 and around the periphery of the lower mold 3, and multiple springs 29 are arranged between the inner wall of the protective cover 23 and the cross-shaped rib plate 2.

[0054] Specifically, in this embodiment, a sliding protective cover 23 is provided around the lower die 3. The protective cover 23 is connected to the cross-shaped rib plate 2 by multiple springs 29. The protective cover 23 can effectively intercept the profiles that fly out due to the stamping force during the stamping process by utilizing its physical shielding effect. It can not only directly block the flying objects and avoid equipment damage and personnel safety hazards, but also buffer the impact force of the flying profiles through the springs 29 and absorb their kinetic energy, thereby further improving the overall safety of the stamping operation.

[0055] Specifically, the cross-shaped rib plate 2 has multiple threaded grooves 24, and each threaded groove 24 is threadedly connected to a first threaded post 25. The end of the first threaded post 25 is provided with a first combination groove 33. The protective cover 23 is provided with threaded holes 26 corresponding to the positions of each threaded groove 24. Each threaded hole 26 is threadedly connected to a second threaded post 27. One end of the second threaded post 27 is provided with an internal hexagonal groove 28, and the other end is provided with a second combination groove 34. The two ends of the spring 29 are respectively accommodated and fixed in the first combination groove 33 and the second combination groove 34.

[0056] In this specific embodiment: When the protective cover 23 needs to be replaced due to damage from the impact of the ejector profile, insert a wrench into the internal hexagonal slot 28, and rotate the wrench to drive the second threaded post 27 to rotate in the threaded hole 26. The second threaded post 27, through the spring 29, links the first threaded post 25 to rotate synchronously in the threaded groove 24. After the threaded engagement is completely released, the protective cover 23 can be quickly separated from the cross-shaped rib plate 2. By using the internal hexagonal slot 28 and the wrench, the first threaded post 25 and the second threaded post 27 are driven to rotate. The linkage of the first threaded post 25 and the second threaded post 27 achieves the separation of the protective cover 23 from the cross-shaped rib plate 2. The quick separation of the rib plate 2 requires no special or complicated tools, and the disassembly and assembly operation is simple and efficient, greatly reducing the time spent replacing protective accessories. During normal operation, the No. 1 threaded post 25 and the No. 2 threaded post 27 respectively engage with the threads of the threaded groove 24 and the threaded hole 26, providing a stable connection support for the protective cover 23. The elasticity of the spring 29 can also buffer the impact force on the protective cover 23, taking into account both connection stability and impact buffering. Damaged protective cover 23 can be quickly disassembled and replaced individually without replacing the entire protective structure or related components, reducing accessory wear and maintenance costs, and improving the overall maintenance convenience and economy of the equipment.

[0057] Specifically, multiple vibration sensors 36 are installed on the protective cover 23. The vibration sensor 36 is model VDM-PP.

[0058] Specifically, this implementation involves arranging vibration sensors 36 at the protective structure to monitor in real time the vibration signals generated by the impact of the profile on the protective cover 23. Once a valid impact signal is detected, the system will simultaneously trigger an emergency shutdown of the equipment and an audible and visual alarm. Timely shutdown can prevent the impact from escalating further and protect the equipment from damage. The rapid alarm can prompt staff to intervene immediately, quickly investigate the cause, and handle the abnormality, thereby eliminating potential hazards before the protective cover 23 fails due to repeated impacts. This design achieves instantaneous identification and response to impact events through vibration sensing, significantly improving the timeliness of detection of abnormal working conditions such as profile flying, preventing the escalation of accidents, and serving the dual purpose of proactive protection of the protective structure and stamping equipment and rapid production recovery.

[0059] Specifically, a third right-angle frame 30 is connected to the first right-angle frame 8. A material discharge port 16 is opened on the other side of the protective cover 23 corresponding to the third right-angle frame 30. A profile gripping mechanism is set at the end of the third right-angle frame 30 near the material discharge.

[0060] In this specific embodiment: When the die height adjustment mechanism of the hydraulic press body 1 pulls the pull rod, the first right-angle frame 8 simultaneously drives the guide plate 4 to complete the feeding action. At the same time, the die height adjustment mechanism also links the third right-angle frame 30 to push the third electromagnet 31 to move towards the lower die 3. When the profile gripping mechanism moves to directly above the profile that has been stamped, it controls the gripping mechanism to grip the profile, and then drives the profile through the unloading port 16. After reaching the designated unloading position, it controls the gripping mechanism to release the profile, thereby completing the automatic unloading. The entire process relies on the die height adjustment mechanism of the hydraulic press body 1 itself as the only power source to realize the coordinated operation of feeding, stamping and unloading. There is no need to configure an additional independent unloading drive device. This not only simplifies the equipment structure and reduces manufacturing costs and space occupation, but also, due to the unified power source and stable and reliable action rhythm, further ensures the continuity and stability of the overall operation of the equipment.

[0061] Specifically, the gripping mechanism includes a No. 3 electromagnet 31 and a sponge suction cup 32. The sponge suction cup 32 is located at the bottom of the No. 3 right-angle frame 30, and the No. 3 electromagnet 31 is also installed on the sponge suction cup 32.

[0062] Specifically, at the bottom of the No. 3 right-angle bracket 30, a sponge suction cup 32 is provided corresponding to the installation position of the No. 3 electromagnet 31. Utilizing its flexible characteristics, the sponge suction cup 32 acts as a buffer when contacting the profile, preventing a hard impact between the No. 3 electromagnet 31 and the profile, thus protecting both the electromagnet 31 and the profile surface. Furthermore, its deformable nature allows it to adaptively conform to the profile contour, improving the tightness and stability of the adsorption. During operation, the sponge suction cup 32 and the No. 3 electromagnet 31 are simultaneously energized, achieving dual adsorption of the profile. The sponge suction cup 32 first grips the profile using negative pressure, and then the No. 3 electromagnet 31 further adsorbs and fixes it using magnetic force. This dual adsorption mechanism significantly enhances the reliability of the gripping, effectively preventing the profile from loosening or shifting during the unloading process. When the unloading position is reached, both are simultaneously de-energized, and the profile is smoothly released. This design not only extends the service life of the components through buffer protection but also improves the stability and safety of the unloading process through synergistic adsorption.

[0063] During operation, multiple profiles to be stamped are stacked on the feed tube 11. The bottom profile first enters the guide groove of the guide plate 4. At this time, the die height adjustment mechanism of the hydraulic press body 1 is controlled to raise the upper die. During the raising process, the die height adjustment mechanism drives the second right-angle frame 10 to rise, and pulls the connecting rod 9 through the second right-angle frame 10. One end of the connecting rod 9 rotates around the second right-angle frame 10, and the other end rotates around the first right-angle frame 8, transmitting the pulling force to the first right-angle frame 8. The first right-angle frame 8 then drives the slide 7 to move along the linear slide rail, thereby directionally pushing the pusher plate 5 to slide in the guide groove, pushing the profile that has entered the guide groove into the lower die 3 along the guide groove. Then, the die height adjustment mechanism is controlled. The entire mechanism drives the upper die downward to complete the stamping process of the profile. During this process, the pusher plate 5 makes a return motion under the drive of the die height adjustment mechanism. At the same time, the profile at the lowest position in the feed tube 11 automatically falls into the guide groove, waiting for the next push. This cycle is repeated to realize the automatic continuous feeding of the profile. This design uses the die height adjustment mechanism of the hydraulic press itself to drive the pusher component to move. There is no need to configure an additional feeding power source. It realizes the mechanical linkage between feeding and stamping, simplifies the equipment structure, and seamlessly connects the feeding action with the die height adjustment action of the press. There is no separate feeding process that takes time, which shortens the processing cycle of a single profile and improves the overall stamping efficiency.

[0064] Before loading multiple profiles to be stamped into the feed tube 11 in batches, in order to achieve smooth and rapid lateral loading and protect the tube wall, the following steps must be taken: First, lift the placement plate 14 so that the second notch 15 on its side completely aligns with the first notch 13 pre-set on the side wall of the feed tube 11, forming a through lateral loading channel. Then, pull the placement plate 14 completely out and remove it laterally. At this time, the operator can treat the profiles that have been neatly stacked on the support plate 18 as a group, and pass them laterally through the aligned first notch 13 and second notch 15, and smoothly slide them into the feed tube 11 through the slide groove 12. This lateral loading method... This method avoids interference and collision between the profile and the pipe edge during the traditional top-down feeding process. After the material is loaded, the placement plate 14 is realigned with the first notch 13 and pushed into the slide 12. The placement plate 14 then slides down the slide 12 to the bottom and resets, restoring its bottom bearing support function for the profile. Through the detachable design of the placement plate 14 and the notch matching structure, the profile is efficiently and batch-loaded from the side. It also avoids friction and collision between the profile and the inlet of the feeding pipe 11 during the loading process, effectively protecting the integrity of the inner wall of the feeding pipe 11, reducing wear and deformation, and thus ensuring a continuous and fast automated feeding process.

[0065] After removing the placement plate 14, to ensure the profiles fall smoothly and avoid jamming, the support plate 18 should be pushed inward along the support sleeve 17 and the insertion interface 35 until its end is tightly against the inner wall of the discharge tube 11, completely eliminating the lower gap. Then, the multiple profiles that have been neatly stacked on the support plate 18 are smoothly placed into the discharge tube 11 through the side loading channel. After loading is completed, the placement plate 14 is realigned and pushed into the slide groove 12, so that its lower end slides along the slide groove 12 to the bottom and is flush with the discharge tube 11. 1. The inner wall is tightly fitted to ensure no gaps. Then, the support plate 18 is pulled out smoothly. Under the restriction of the anti-detachment rope 19, the support plate 18 will not completely detach from the support sleeve 17. This ensures that it can be smoothly reset and facilitate the next assembly. It can also effectively prevent parts from being lost or misaligned. This operation process ensures that the support plate 18 is completely pulled out and the bottom of the placement plate 14 is tightly in place, so that the profile falls smoothly and without obstruction. This fundamentally prevents jamming problems, while taking into account the filling efficiency and the reusability of the parts.

[0066] After the profile falls into the vertical section through the feeding pipe 11, the system simultaneously activates electromagnet 20 and electromagnet 21. The two work together to correct the levelness of the profile. The leveling mechanism mainly relies on the lateral attraction force applied by electromagnets 20 and 21 to the profile. When the profile tilts during its fall in the vertical section, electromagnets 20 and 21, based on the real-time detected attitude signal, use differentiated magnetic pulling to make the higher side of the profile subject to lateral attraction force, slowing down the vertical falling speed of that side, while the lower side maintains or accelerates its fall. This achieves dynamic adjustment of the profile's horizontal attitude. This vertical motion adjustment based on lateral magnetic pulling enables the profile to gradually recover and maintain a horizontal attitude during continuous falling, stably entering the guide chute and effectively preventing blockage caused by tilting. Through the coordinated work of the two, the system can adjust the levelness of the profile in the vertical section in real time, ensuring the stable operation of the automatic feeding process and facilitating high-efficiency and uninterrupted automated stamping operations.

[0067] At the bottom of the No. 3 right-angle frame 30, there is a No. 3 electromagnet 31, and a sponge suction cup 32 is set directly below it. Directly below the sponge suction cup 32, an ultrasonic sensor 22 monitors the amount of profiles in the feed tube 11 in real time by emitting sound waves and receiving echoes. When the amount of profiles detected is lower than the set threshold, the system automatically triggers an alarm to remind the staff to replenish the profiles in time, thereby ensuring the continuity and controllability of the stamping feeding process. This monitoring mechanism can not only avoid production interruptions due to material shortage through threshold warning and improve equipment utilization and production cycle stability, but more importantly, timely replenishment can keep a large amount of profiles in the feed tube 11, thereby reducing the falling space of newly replenished profiles and effectively preventing them from tilting or jamming during vertical falling. This significantly improves the smoothness and reliability of feeding, further reduces the need for manual intervention, and enhances the overall level of automation management.

[0068] A sliding protective cover 23 is provided around the lower die 3. The protective cover 23 is connected to the cross-shaped rib plate 2 by multiple springs 29. The protective cover 23 can effectively intercept the profiles that fly out due to the stamping force during the stamping process by utilizing its physical shielding effect. It can not only directly block the flying objects and avoid equipment damage and personnel safety hazards, but also buffer the impact force of the flying profiles through the springs 29 and absorb their kinetic energy, thereby further improving the overall safety of the stamping operation.

[0069] When the protective cover 23 needs to be replaced due to damage from the impact of the ejector profile, insert a wrench into the hexagonal socket 28 and rotate the wrench to rotate the second threaded post 27 in the threaded hole 26. The second threaded post 27, through the spring 29, links the first threaded post 25 to rotate synchronously in the threaded groove 24. After the threaded engagement is completely disengaged, the protective cover 23 can be quickly separated from the cross-shaped rib plate 2. This design uses the hexagonal socket 28 and the wrench to drive the first threaded post 25 and the second threaded post 27 to rotate. The linkage of the first threaded post 25 and the second threaded post 27 achieves the separation of the protective cover 23 from the cross-shaped rib plate. The quick separation of the 2nd thread requires no special or complicated tools, and the disassembly and assembly operations are simple and efficient, greatly reducing the time spent replacing protective accessories. During normal operation, the No. 1 threaded post 25 and the No. 2 threaded post 27 respectively engage with the threads of the threaded groove 24 and the threaded hole 26 to provide a stable connection support for the protective cover 23. The elasticity of the spring 29 can also buffer the impact force on the protective cover 23, taking into account both connection stability and impact buffering. Damaged protective cover 23 can be quickly disassembled and replaced individually without replacing the entire protective structure or related components, reducing accessory wear and maintenance costs, and improving the overall maintenance convenience and economy of the equipment.

[0070] Vibration sensors 36 are installed at the protective structure to monitor the vibration signals generated by the impact of the profile on the protective cover 23 in real time. Once a valid impact signal is detected, the system will simultaneously trigger an emergency shutdown of the equipment and an audible and visual alarm. Timely shutdown can prevent the impact from spreading further and protect the equipment from damage. The rapid alarm can prompt the staff to intervene immediately, quickly investigate the cause and deal with the abnormality, thereby eliminating the hidden danger before the protective cover 23 fails due to multiple impacts. This design realizes instantaneous identification and response to impact events through vibration sensing, which significantly improves the timeliness of detection of abnormal working conditions such as profile flying, avoids the escalation of accidents, and has the dual function of providing proactive protection for the protective structure and stamping equipment and rapid production recovery.

[0071] When the mold height adjustment mechanism of the hydraulic press body 1 pulls the pull rod, the first right-angle frame 8 synchronously drives the guide plate 4 to complete the feeding action. At the same time, the mold height adjustment mechanism also links the third right-angle frame 30 to push the third electromagnet 31 to move towards the lower mold 3. When the third electromagnet 31 moves to the top of the stamped profile, the third electromagnet 31 is energized and uses magnetic adsorption to attract the profile to its bottom. Then, it drives the profile through the unloading port 16 and releases the profile after reaching the designated unloading position, thus completing the automatic unloading. The whole process relies on the mold height adjustment mechanism of the hydraulic press body 1 itself as the only power source to realize the coordinated operation of feeding, stamping and unloading. There is no need to configure an additional independent unloading drive device. This not only simplifies the equipment structure and reduces manufacturing costs and space occupation, but also further ensures the continuity and stability of the overall operation of the equipment due to the unified power source and stable and reliable action rhythm.

[0072] At the bottom of the No. 3 right-angle bracket 30, a sponge suction cup 32 is provided corresponding to the installation position of the No. 3 electromagnet 31. The sponge suction cup 32 utilizes its flexible characteristics to buffer the profile when in contact with it, preventing the No. 3 electromagnet 31 from having a hard impact with the profile, thus protecting the No. 3 electromagnet 31 and the surface of the profile. On the other hand, its deformable characteristics allow it to adapt to the contour of the profile, improving the tightness and stability of the adsorption. During operation, the sponge suction cup 32 and the No. 3 electromagnet 31 are energized simultaneously to achieve dual adsorption of the profile: the sponge suction cup 32 first grabs the profile with negative pressure, and then the No. 3 electromagnet 31 further adsorbs and fixes it with magnetic force. This dual adsorption mechanism significantly enhances the reliability of the gripping and effectively prevents the profile from loosening or shifting during the unloading process. When the unloading position is reached, both are de-energized simultaneously, and the profile is released smoothly. This design not only extends the service life of the components through buffer protection, but also improves the stability and safety of the unloading process through synergistic adsorption.

[0073] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. An automatic punch press with a protective structure, comprising a hydraulic punch press body (1), wherein a cross-shaped rib plate (2) is provided on the worktable of the hydraulic punch press body (1), and a lower die (3) is installed on the top of the cross-shaped rib plate (2); characterized in that: A guide plate (4) is provided on the top of the cross-shaped rib plate (2) and along the outer periphery of the lower mold (3). A guide groove for guiding the profile feeding is provided on the guide plate (4). A feeding pipe (11) is connected above the feeding groove. Multiple profiles to be processed are stacked in the feeding pipe (11). A pusher plate (5) is slidably arranged in the guide groove to push the profile to move along the guide groove. A linear guide rail (6) is also installed on the top of the cross-shaped rib plate (2). A sliding slide (7) is fitted on the linear guide rail (6). A first right-angle frame (8) is fixed on the top of the slide (7). The end of the pusher plate (5) is connected to the top of the first right-angle frame (8). A push-pull shaft is rotatably connected to the first right-angle frame (8). A second right-angle frame (10) is rotatably connected to the other end of the push-pull shaft. The second right-angle frame (10) is connected to the mold height adjustment mechanism of the hydraulic punch body (1). The corners of the inner wall of the feed tube (11) are rounded, and the two rounded corners have a common center. The No. 1 right-angle frame (8) is connected to the No. 3 right-angle frame (30), and the No. 3 right-angle frame (30) is provided with a profile gripping mechanism at the end near the material unloading point; The gripping mechanism includes a No. 3 electromagnet (31) and a sponge suction cup (32). The sponge suction cup (32) is located at the bottom of the No. 3 right-angle frame (30), and a No. 3 electromagnet (31) is also installed on it corresponding to the sponge suction cup (32). The top of the feeding pipe (11) is provided with a convex-shaped groove (12). The side end of the feeding pipe (11) is provided with a first notch (13) corresponding to the position of the groove (12). A placement plate (14) is slidably installed in the groove (12). The side end of the placement plate (14) is provided with a second notch (15) corresponding to the first notch (13). The placement plate (14) passes through the first notch (13) through its second notch (15) and is quickly installed into the groove (12). The side end of the feed pipe (11) is provided with an insertion interface (35) at the bottom of the inner side wall of the slide groove (12). A support sleeve (17) is connected to the placement plate (14). A carrier plate (18) is inserted into the support sleeve (17) and the insertion interface (35). One end of the carrier plate (18) extends into the feed pipe (11), and the other end is connected to the support sleeve (17) through an anti-detachment rope (19).

2. An automatic punching machine with a protective structure according to claim 1, characterized in that: At the bend of the feed tube (11), a No. 1 electromagnet (20) and a No. 2 electromagnet (21) are respectively installed on two opposite sides.

3. An automatic punching machine with a protective structure according to claim 2, characterized in that: An ultrasonic sensor (22) is installed on the upper side of the bend of the feed pipe (11).

4. An automatic punching machine with a protective structure according to claim 3, characterized in that: The top of the cross-shaped rib plate (2) and the periphery of the lower mold (3) are provided with a protective cover (23). The other side of the protective cover (23) is provided with a discharge port (16) corresponding to the No. 3 right angle frame (30). Multiple springs (29) are arranged between the inner wall of the protective cover (23) and the cross-shaped rib plate (2).

5. An automatic punching machine with a protective structure according to claim 4, characterized in that: The cross-shaped rib plate (2) has multiple threaded grooves (24), and each threaded groove (24) is threaded with a first threaded post (25). The end of the first threaded post (25) is provided with a first combination groove (33). The protective cover (23) is provided with threaded holes (26) corresponding to the positions of each threaded groove (24). Each threaded hole (26) is threaded with a second threaded post (27). One end of the second threaded post (27) is provided with an internal hexagonal groove (28), and the other end is provided with a second combination groove (34). The two ends of the spring (29) are respectively accommodated and fixed in the first combination groove (33) and the second combination groove (34).

6. An automatic punching machine with a protective structure according to claim 5, characterized in that: Multiple vibration sensors (36) are installed on the protective cover (23).

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