Automatic punching machine with protective structure

Abstract

The invention belongs to the technical field of punching machines, and particularly relates to an automatic punching machine with a protective structure, which comprises a hydraulic punching machine main body, a cross-shaped rib plate is arranged on a working table of the hydraulic punching machine main body, and a lower die is arranged at the top of the cross-shaped rib plate; a material guide plate is arranged at the top of the cross-shaped rib plate and along the periphery of the lower die, a material guide groove used for guiding feeding of the sectional materials is formed in the material guide plate, the upper portion of the material guide groove is communicated with a discharging pipe, and a plurality of sectional materials to be machined are stacked in the discharging pipe; according to the hydraulic punching machine, efficient linkage automatic continuous production and feeding links are achieved, the die height adjusting mechanism of the hydraulic punching machine body is used for driving the material pushing plate to complete the feeding action, the feeding process and the punching action are mechanically linked and seamlessly connected, an additional power source does not need to be configured, equipment is simplified through the structure, time consumption of the independent feeding procedure is avoided, and the production efficiency is improved. The machining period of a single profile is effectively shortened, and the overall stamping efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of punch presses, in particular to an automatic punch press with a protection structure. BACKGROUND

[0002] The automatic punch press deeply integrates a feeder, a mechanical hand, and a PLC control system, and carefully constructs a highly intelligent stamping production unit. The unit realizes continuous and automatic processes of stamping operation through the collaborative operation of components. In the operation process of the system, manual intervention is significantly reduced, which not only effectively reduces production fluctuations caused by human factors, but also greatly improves production efficiency. At the same time, the automatic operation mode greatly enhances the safety of operation and reduces potential safety risks. The intelligent stamping production unit fully meets the strict standards of modern manufacturing for high-precision and high-tact production, and provides solid technical support for the high-quality development of manufacturing industry.

[0003] Some invention patents in the technical field of punch presses are disclosed in the prior art. The invention patent with the publication number CN202220151340.4 discloses an automatic feeding structure of a high-speed punch press, which includes a conveyor belt and a protection plate. An inner wall of the protection plate is provided with a material guide plate above the conveyor belt and used for guiding the material. An end of the material guide plate is provided with a material blocking plate through a rotating shaft. An adjusting piece for adjusting the angle of the material guide plate is arranged between the material blocking plate and the protection plate. The adjusting piece includes a threaded rod screwed on the protection plate. An end of the threaded rod is slidingly connected with the material blocking plate. An end of the protection plate is provided with a support plate flush with the conveyor belt. The support plate is provided with a push plate used for pushing the material to the machining table of the punch press. The push plate is used for conveniently queuing multiple materials, so that the materials can be pushed to the machining table of the punch press one by one for processing, thereby avoiding the harm of manually placing the materials on the machining table of the punch press by workers.

[0004] The existing automatic punch press technology still mainly relies on mechanical arms or independent automatic equipment to realize the automation of a single link, and has not formed a highly integrated collaborative system. Such a split structure leads to low overall automation and integration of the system, poor collaboration between links, limited intelligence level, and insufficient consideration of comprehensive protection of equipment and workpieces, which restricts the further improvement of the stability and efficiency of the production system.

[0005] Therefore, the application designs an automatic punch press with a protection structure to solve the above problems. SUMMARY

[0006] In order to make up for the deficiencies of the prior art, the automatic punch press with a protection structure is provided.The automatic punch press is mainly used to solve the problems of low automation and integration, poor coordination of each link, insufficient intelligent level, lack of protection for equipment and workpieces, and poor maintenance convenience of the existing automatic punch press.

[0007] The technical scheme adopted by the present application to solve the technical problems is: an automatic punch press with a protection structure, comprising a hydraulic punch press body, a cross-shaped rib plate is arranged on the workbench of the hydraulic punch press body, and a lower die is mounted on the top of the cross-shaped rib plate; a material guide plate is arranged on the top of the cross-shaped rib plate along the outer periphery of the lower die, a material guide groove for guiding the feeding of a profile is formed in the material guide plate, a discharging pipe is connected above the material guide groove, and a plurality of to-be-processed profiles are stacked in the discharging pipe; A pushing plate is slidably arranged in the material guide groove, which is used to push the profile to move along the material guide groove, a linear guide rail is also mounted on the top of the cross-shaped rib plate, a slidable sliding seat is matched on the linear guide rail, a first right-angle bracket is fixed on the top of the sliding seat, the end of the pushing plate is connected with the top of the first right-angle bracket, a push-pull shaft is rotatably connected on the first right-angle bracket, a second right-angle bracket is rotatably connected on the other end of the push-pull shaft, and the second right-angle bracket is connected with a die height adjusting mechanism of the hydraulic punch press body. The corners of the inner side wall of the discharging pipe are transitioned by round corners, and the opposite two round corners have a common center.

[0008] Preferably, a convex-shaped sliding groove is formed on the top of the discharging pipe, a first notch is arranged on the side end face of the discharging pipe corresponding to the position of the sliding groove, a placing plate is slidably assembled in the sliding groove, a second notch is arranged on the side end face of the placing plate corresponding to the first notch, and the placing plate is quickly assembled into the sliding groove through the second notch.

[0009] Preferably, a plug-in interface is arranged on the side end face of the discharging pipe corresponding to the bottom of the inner side wall of the sliding groove, a supporting sleeve is connected to the placing plate, a bearing plate is inserted into the plug-in interface and the supporting sleeve, one end of the bearing plate extends into the discharging pipe, and the other end is connected with the supporting sleeve through a anti-dropping rope.

[0010] Preferably, a first electromagnet and a second electromagnet are arranged on the opposite two side faces of the bending part of the discharging pipe.

[0011] Preferably, an ultrasonic sensor is mounted on the upper side face of the bending part of the discharging pipe.

[0012] Preferably, a protection cover is arranged on the top of the cross-shaped rib plate around the outer periphery of the lower die, and a plurality of springs are arranged between the inner side wall of the protection cover and the cross-shaped rib plate.

[0013] Preferably, a plurality of threaded grooves are formed on the cross-shaped rib plate, a first threaded column is threadedly connected in each threaded groove, an end of the first threaded column is provided with a first combined groove, a threaded hole is formed on the protective cover corresponding to each threaded groove, a second threaded column is threadedly connected in each threaded hole, an end of the second threaded column is provided with an internal hexagonal groove, and the other end is provided with a second combined groove, and the two ends of the spring are accommodated and fixed in the first combined groove and the second combined groove respectively.

[0014] Preferably, a plurality of vibration sensors are mounted on the protective cover, and the model of the vibration sensor is VDM28-4P-P1.

[0015] Preferably, the first right-angle bracket is connected with a third right-angle bracket, a discharge port is formed on the other side of the protective cover corresponding to the third right-angle bracket, and a profile grabbing mechanism is arranged at an end of the third right-angle bracket close to the discharge port.

[0016] Preferably, the grabbing mechanism comprises a third electromagnet and a sponge suction cup, and the sponge suction cup is arranged at the bottom of the third right-angle bracket, and the third electromagnet is mounted on the sponge suction cup.

[0017] The beneficial effects of the present application are as follows: 1. In the present application, the feeding link utilizes the die height adjusting mechanism of the hydraulic punch press main body to drive the pushing plate to complete the feeding action, and the feeding process and the stamping action are mechanically linked and seamlessly connected, without the need for additional power source, which simplifies the equipment and effectively shortens the processing period of a single profile, significantly improves the overall stamping efficiency, and the discharging link is also completed by the die height adjusting mechanism through the linkage of the third right-angle bracket and the third electromagnet, realizing the sharing of the same power source for the feeding, stamping and discharging three processes, further simplifying the equipment structure and reducing the manufacturing cost and space occupation.

[0018] 2. In the present application, the lateral loading of the profile is realized through the detachable structure of the placing plate combined with the matching of the first notch and the second notch, which avoids the interference problem of the traditional top-down loading, is more convenient to operate, and provides lateral positioning support for the profile through the cooperation of the bearing plate and the anti-dropping rope, ensures the neat stacking, prevents the loss of parts, and facilitates quick resetting. During the lateral loading process, the profile enters the discharge pipe through the smooth first notch and the sliding groove, avoiding friction and collision with the edge of the pipe opening, effectively protecting the inner side wall of the discharge pipe, and reducing wear and deformation.

[0019] 3. In the present application, the concentric corner design at the corner of the discharge pipe reduces the resistance and jamming risk of the profile descending, ensures the continuous and stable conveying of the material, the first electromagnet and the second electromagnet work cooperatively in the vertical section to correct the real-time levelness of the profile, so that it enters the guide chute smoothly in a flat and upright posture, effectively preventing blockage caused by inclination, and improving the positioning accuracy of entering the chute.

[0020] 4. In the present application, the ultrasonic sensor realizes real-time and non-contact monitoring of the number of profiles in the blanking pipe, the threshold alarm mechanism can effectively prevent production interruption caused by lack of material, improve equipment utilization and production stability, reduce the need for manual inspection, and the vibration sensor monitors the impact vibration of the protective cover in real time and can trigger an alarm in the first time. This pre-warning mechanism enables workers 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 the punching equipment.

[0021] 5. In the present application, the protective cover on the outer periphery of the lower die is connected to the cross-shaped rib plate through multiple springs, which can effectively block the profiles ejected during punching, improving the safety of the operation. The elastic support provided by the spring enables 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 through the linkage structure of the first threaded column, the second threaded column and the spring, realizing quick disassembly and replacement. This structure provides stable connection while the spring can also buffer the impact force, balancing the connection stability and impact resistance, and reducing maintenance costs.

[0022] 6. In the present application, the non-contact blanking is achieved by using the magnetic adsorption method of the third electromagnet, which avoids mechanical damage to the surface of the punched profile and ensures the quality of the finished product. The sponge suction cup at the bottom of the third electromagnet provides flexible buffering to prevent hard collision with the profile, protecting the structure and magnetic elements of the third electromagnet and prolonging its service life. At the same time, its self-adaptive fitting property enhances the adsorption stability, ensuring the smoothness and accuracy of the blanking operation. BRIEF DESCRIPTION OF DRAWINGS

[0023] The present application will be further described below with reference to the accompanying drawings.

[0024] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the structure of the protective cover in the present application; Figure 3 is a schematic diagram of the structure of the protective cover in the present application Figure 2 is a schematic diagram of the structure from another perspective; Figure 4 is a schematic diagram of the structure of the protective cover in the present application Figure 2 is a schematic diagram of the structure from a top view; Figure 5 is a schematic diagram of the structure of the protective cover in the present application Figure 2 is a sectional view of the second threaded column; Figure 6 is a sectional view of the blanking pipe in the present application; Figure 2 Figure 7 is a schematic diagram of the structure of the blanking pipe in the present application;​ Figure 8 This is a schematic diagram of the structure of the placement plate in this invention; Figure 9 This is the present invention. Figure 5 Enlarged structural diagram at point A; 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; Figure 11 This is the present invention. Figure 3 Enlarged structural diagram at point B; Figure 12 This is the present invention. Figure 6 Enlarged structural diagram at point C; 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

[0025] 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.

[0026] like Figures 1 to 12 As 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. A pushing plate 5 is slidably arranged in the guide chute for pushing the profile along the guide chute. The top of the cross-shaped rib plate 2 is further provided with a linear guide rail 6. A slidable sliding seat 7 is fitted on the linear guide rail 6. The top of the sliding seat 7 is fixed with a first right-angle frame 8. The end of the pushing plate 5 is connected with the top of the first right-angle frame 8. A push-pull shaft is rotatably connected with the first right-angle frame 8. The other end of the push-pull shaft is rotatably connected with a second right-angle frame 10. The second right-angle frame 10 is connected with the die height adjusting mechanism of the hydraulic punch body 1. The corners of the inner side wall of the blanking pipe 11 are transitioned by round corners. The opposite two round corners have a common center. When the profile falls through the corner in the blanking pipe 11, the profile is smoothly transitioned to the vertical section of the blanking pipe 11 by using the concentric round corner structure designed at the corner. The concentric round corner structure at the corner can reduce the resistance and jamming risk of the profile falling, and can ensure the continuous conveying of the material.

[0027] In this embodiment, a plurality of profiles to be punched are stacked in the blanking pipe 11. The bottommost profile first enters the guide chute of the guide plate 4. At this time, the die height adjusting mechanism of the hydraulic punch body 1 is controlled to lift the upper die. During the lifting process, the die height adjusting mechanism drives the second right-angle frame 10 to rise. The second right-angle frame 10 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. The connecting rod 9 transmits the pulling force to the second right-angle frame 10. The second right-angle frame 10 drives the sliding seat 7 to move along the linear guide rail, thereby pushing the pushing plate 5 in the guide chute. The profile that has entered the guide chute is pushed into the lower die 3. Then, the die height adjusting mechanism is controlled to drive the upper die to fall, and the punching process of the profile is completed. During this process, the pushing plate 5 is driven by the die height adjusting mechanism to perform a return movement. At the same time, the profile at the lowest position in the blanking pipe 11 automatically falls into the guide chute, waiting for the next pushing. The process is repeated to realize the automatic and continuous feeding of the profile. The pushing assembly is driven by the die height adjusting mechanism of the hydraulic punch itself, without the need for an additional feeding power source. The feeding and punching actions are mechanically linked, the equipment structure is simplified, the feeding action is seamlessly connected with the die height adjusting action of the punch, there is no separate feeding process, the processing cycle of a single profile is shortened, and the overall punching efficiency is improved.

[0028] Specifically, a convex-shaped sliding groove 12 is formed in the top of the blanking pipe 11. A first notch 13 is formed in the side end face of the blanking pipe 11 corresponding to the position of the sliding groove 12. A placement plate 14 is slidably arranged in the sliding groove 12. The side end face 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 the second notch 15, and is quickly assembled in the sliding groove 12. A plug-in port 35 is formed in the side end face of the blanking pipe 11 corresponding to the bottom of the inner side wall of the sliding groove 12. A support sleeve 17 is connected to the placement plate 14. A bearing plate 18 is inserted into the support sleeve 17 and the plug-in port 35.

[0029] In this embodiment, before a plurality of to-be-stamped profiles are batch loaded into the blanking pipe 11, first, the placing plate 14 is lifted, and the second notch 15 at the side of the placing plate 14 is completely matched with the first notch 13 on the side wall of the blanking pipe 11. Then, the placing plate 14 is completely pulled out and removed along the side. Then, in order to ensure that the profiles can smoothly fall and avoid jamming, the bearing plate 18 needs to be pushed inward first, so that it is slid into place along the support sleeve 17 and the plug-in 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 sequentially pass through the matched first notch 13 and second notch 15 along the side. The bearing plate 18 is pulled out smoothly, the lower end of the placing plate 14 is slid along the sliding groove 12 to the bottom and tightly fits the inner wall of the blanking pipe 11. When the stamped profiles are smoothly slid into the blanking pipe 11, this side loading method avoids the interference and collision of the profiles with the edge of the pipe opening when the traditional material is fed from top to bottom, realizes the efficient and batch loading of the profiles from the side, and avoids the friction and collision of the profiles with the inlet of the blanking pipe 11 during the loading process, effectively protects the integrity of the inner wall of the blanking pipe, and ensures the smooth falling path of the profiles by ensuring that the bearing plate 18 is completely pulled out and the bottom of the placing plate 14 is tightly in place, which fundamentally prevents the jamming problem. The whole system takes into account the filling efficiency, part reusability and long-life operation of the equipment, and ensures continuous, rapid and automated material feeding process.

[0030] Specifically, the other end of the bearing plate 18 is fixed to the support sleeve 17 by an inelastic anti-dropping rope 19.

[0031] In this embodiment, the bearing plate 18 is pulled out smoothly, and under the limitation of the anti-dropping rope 19, the bearing plate 18 will not completely separate from the support sleeve 17, which can ensure its smooth resetting and facilitate the next assembly, and effectively avoid the loss or misplacement of parts.

[0032] Specifically, the bending part of the blanking pipe 11 is provided with a first electromagnet 20 and a second electromagnet 21 on the opposite two sides thereof.

[0033] The embodiment is specific: after the profile falls into the vertical section in the blanking pipe 11, the system synchronously starts the first electromagnet 20 and the second electromagnet 21, and the two cooperate to correct the levelness of the profile. The leveling mechanism mainly relies on the transverse attractive force of the first electromagnet 20 and the second electromagnet 21 on the profile. When the profile is tilted during the falling process in the vertical section, the first electromagnet 20 and the second electromagnet 21 differentially pull the profile according to the falling state of the profile, so that the lower side of the profile is subjected to the transverse attractive force of the first electromagnet 20, and the falling speed in the vertical direction of the lower side is slowed down, while the higher side is kept under the action of the second electromagnet 21, so as to realize dynamic adjustment of the horizontal posture of the profile. This vertical motion adjustment based on transverse magnetic force pulling can make the profile gradually restore and maintain the horizontal posture during the continuous falling process, and stably enter the guide chute, effectively preventing the blocking problem caused by tilting. Through the cooperative work of the two, the system can adjust the levelness of the profile in the vertical section in real time, ensure the stable operation of the automatic feeding process, and is beneficial to realize efficient and uninterrupted automatic stamping operation.

[0034] Specifically, an ultrasonic sensor 22 is installed on the upper side of the bending part of the blanking pipe 11. The model of the ultrasonic sensor 22 is UC-GM-IUR-V.

[0035] The embodiment is specific: a third electromagnet 31 is installed at the bottom of the third right-angle frame 30, and a sponge suction cup 32 is arranged directly below the third electromagnet 31. The ultrasonic sensor 22 is arranged directly below the sponge suction cup 32. When no profile to be processed is detected, the system automatically triggers an alarm to remind the staff to replenish the profile in time, so as to ensure the continuity and controllability of the stamping feeding process. This monitoring mechanism not only avoids production interruption caused by lack of material through threshold warning, improves equipment utilization and production rhythm stability; more importantly, timely replenishment can keep more profiles in the blanking pipe 11, thereby reducing the falling space of the newly replenished profiles, effectively preventing tilting, jamming and other problems of the profiles during vertical falling, significantly improving the smoothness and reliability of the blanking, further reducing the demand for manual intervention, and enhancing the overall automation management level.

[0036] Specifically, a protective cover 23 is arranged on the top of the cross-shaped rib plate 2 and around the periphery of the lower die 3. A plurality of springs 29 are arranged between the inner side wall of the protective cover 23 and the cross-shaped rib plate 2.

[0037] The embodiment is specific: a movable protective cover 23 is arranged on the periphery of the lower die 3, and the protective cover 23 is connected with the cross-shaped rib plate 2 through a plurality of springs 29. The protective cover 23 can effectively intercept the profiled material flying out due to the stamping force by using the physical shielding effect, can not only directly block the flying object to avoid equipment damage and personnel safety hazards, but also can buffer the impact force of the flying profiled material through the spring 29 to absorb the kinetic energy, so as to further improve the overall safety of the stamping operation.

[0038] Specifically, a plurality of threaded grooves 24 are arranged on the cross-shaped rib plate 2, and a first threaded column 25 is threadedly connected in each threaded groove 24. The first threaded column 25 is provided with a first combined groove 33 at the end thereof. The protective cover 23 is provided with a threaded hole 26 at a position corresponding to each threaded groove 24. A second threaded column 27 is threadedly connected in each threaded hole 26. The second threaded column 27 is provided with an internal hexagonal groove 28 at one end and a second combined groove 34 at the other end. The two ends of the spring 29 are respectively accommodated and fixed in the first combined groove 33 and the second combined groove 34.

[0039] When the protective cover 23 needs to be replaced due to damage caused by the impact of the ejected profiled material, a wrench is inserted into the internal hexagonal groove 28, and the wrench is rotated to drive the second threaded column 27 to rotate in the threaded hole 26. The second threaded column 27 drives the first threaded column 25 to rotate in the threaded groove 24 through the spring 29. After the threaded connection is completely released, the protective cover 23 and the cross-shaped rib plate 2 can be quickly separated. The first threaded column 25 and the second threaded column 27 are driven to rotate by the cooperation of the internal hexagonal groove 28 and the wrench, and the protective cover 23 and the cross-shaped rib plate 2 are quickly separated through the linkage and rotation of the first threaded column 25 and the second threaded column 27. Without special complex tools, the disassembly and assembly operation is simple and efficient, the time consumption for replacing the protective parts is greatly shortened, and the first threaded column 25 and the second threaded column 27 are threadedly connected with the threaded groove 24 and the threaded hole 26 respectively to provide stable connection support for the protective cover 23. The elastic holding of the spring 29 can also buffer the impact force of the protective cover 23, and the connection stability and impact buffering performance are considered. The damaged protective cover 23 can be quickly disassembled and replaced individually, without the need to replace the entire protective structure or related parts, reducing the loss of parts and maintenance cost, and improving the overall maintenance convenience and economy of the equipment.

[0040] Specifically, a plurality of vibration sensors 36 are installed on the protective cover 23, and the model of the vibration sensor 36 is VDM-P-P.

[0041] The embodiment is specific: the vibration sensor 36 is arranged at the protection structure, for monitoring the vibration signal generated by the impact of the profile on the protection cover 23 in real time, once the effective impact signal is detected, the system will synchronously trigger the emergency shutdown of the equipment and the audible and visual alarm, timely shutdown can prevent the impact from further expanding, and protect the equipment from damage, and the rapid alarm can prompt the staff to intervene immediately, quickly investigate the cause and deal with the abnormality, so as to eliminate the hidden danger before the protection cover 23 is damaged due to multiple impacts, the design realizes instantaneous identification and response of the impact event through vibration sensing, significantly improves the timeliness of detection of abnormal working conditions such as profile flying, avoids escalation of accidents, and has the dual functions of pre-protecting the protection structure and the stamping equipment and quickly recovering the production.

[0042] Specifically, the first right-angle bracket 8 is connected with a third right-angle bracket 30, and a discharge port 16 is formed in the other side of the protection cover 23 corresponding to the third right-angle bracket 30, and a profile grabbing mechanism is arranged at the end of the third right-angle bracket 30 close to the discharge port.

[0043] The embodiment is specific: when the die height adjusting mechanism of the hydraulic punch main body 1 pulls the pull rod, the first right-angle bracket 8 synchronously drives the guide plate 4 to complete the feeding action, and at the same time, the die height adjusting mechanism also links the third right-angle bracket 30 and drives the third electromagnet 31 to move towards the direction of the lower die 3, when the profile grabbing mechanism moves to the position directly above the profile that has completed the stamping, the grabbing mechanism is controlled to grab the profile, and then drives the profile to pass through the discharge port 16, and after the profile reaches the specified discharge position, the grabbing mechanism is controlled to release the profile, so as to complete the automatic discharge, the whole process relies on the die height adjusting mechanism of the hydraulic punch main body 1 itself as the only power source, realizes the coordinated operation of feeding, stamping and discharging, and does not need to additionally configure an independent discharge driving device, which not only simplifies the equipment structure, reduces the manufacturing cost and space occupation, but also further guarantees the continuity and stability of the overall operation of the equipment due to the unified power source and stable and reliable action rhythm.

[0044] Specifically, the grabbing mechanism includes the third electromagnet 31 and the sponge suction cup 32, and the sponge suction cup 32 is arranged at the bottom of the third right-angle bracket 30, and the third electromagnet 31 is also installed on the sponge suction cup 32.

[0045] The third embodiment is specific: a sponge suction cup 32 is arranged at the bottom of the third right-angle frame 30 corresponding to the mounting position of the third electromagnet 31. The sponge suction cup 32 utilizes its flexible characteristics to play a buffering role when contacting the profile, thereby avoiding hard impact between the third electromagnet 31 and the profile, protecting the third electromagnet 31 and the surface of the profile. On the other hand, the deformable characteristics of the sponge suction cup 32 enable it to adapt to the profile contour, improving the tightness and stability of adsorption. In the working process, the sponge suction cup 32 and the third electromagnet 31 are synchronously powered to realize double adsorption of the profile. The sponge suction cup 32 first grabs the profile through negative pressure, and then the third electromagnet 31 further adsorbs and fixes through magnetic force. This double adsorption mechanism significantly enhances the reliability of grabbing and effectively prevents the profile from loosening or deviating during the unloading process. When reaching the unloading position, both are synchronously powered off, and the profile is smoothly released. This design not only prolongs the service life of the components through buffering protection, but also improves the stability and safety of the unloading process through cooperative adsorption.

[0046] In work, after a plurality of to be punched profiles are stacked in the unloading pipe 11, the bottommost profile first enters the guide groove of the guide plate 4. At this time, the die height adjusting mechanism of the hydraulic punch main body 1 is controlled to lift the upper die. In the lifting process, the die height adjusting 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, to transmit the pulling force to the first right-angle frame 8. The first right-angle frame 8 immediately drives the sliding seat 7 to move along the linear guide rail, thereby directionally pushing the guide plate 5 to slide in the guide groove, and pushing the profile already in the guide groove into the lower die 3. Then, the die height adjusting mechanism is controlled to drive the upper die to descend, completing the punching process of the profile. In this process, the guide plate 5 performs a return motion under the drive of the die height adjusting mechanism. At the same time, the profile at the lowest position in the unloading pipe 11 automatically falls into the guide groove, waiting for the next push. In this way, the automatic continuous feeding of the profile is realized. This design drives the pushing assembly to act by means of the die height adjusting mechanism of the hydraulic punch itself, without the need for additional feeding power source, realizing the mechanical linkage of feeding and punching actions, simplifying the equipment structure, and seamlessly connecting the feeding action and the die height adjusting action of the punch, without separate feeding process time-consuming, shortening the processing period of a single profile, and improving the overall punching efficiency. Before the multiple pieces of to-be-stamped profiles are batch loaded into the blanking pipe 11, in order to realize smooth and fast lateral loading and protect the pipe wall, the following steps need to be operated: first, the placing plate 14 is lifted up, so that the second notch 15 on the side of the placing plate 14 is completely matched with the first notch 13 on the side wall of the blanking pipe 11, forming a through lateral loading channel, then the placing plate 14 is completely pulled out and removed along the side, at this time, the operator can take the profiles neatly stacked on the carrying plate 18 as a group, and pass through the matched first notch 13 and second notch 15 along the side in turn, and then smoothly slide into the blanking pipe 11 through the chute 12. This lateral loading method avoids the interference and collision of the profiles with the edge of the pipe opening when the profiles are loaded from top to bottom, and after the loading is completed, the placing plate 14 is pushed into the chute 12 along the first notch 13, and then the placing plate 14 slides down to the bottom of the chute 12 and is reset, restoring the bottom carrying and supporting function of the placing plate 14. Through the detachable design of the placing plate 14 and the notch matching structure, the profiles are efficiently and batch loaded from the side, and the friction and collision between the profiles and the inlet of the blanking pipe 11 during the loading process is avoided, the integrity of the inner side wall of the blanking pipe 11 is effectively protected, the wear and deformation are reduced, and the continuous and fast automatic replenishment process is ensured; After the placing plate 14 is removed, in order to ensure that the profiles can smoothly fall and avoid jamming, the carrying plate 18 needs to be pushed inwards along the support sleeve 17 and the plug-in interface 35 until the end thereof tightly abuts against the inner side wall of the blanking pipe 11, completely eliminating the gap at the lower end, then the multiple profiles neatly stacked on the carrying plate 18 are smoothly put into the blanking pipe 11 through the lateral loading channel, after the loading is completed, the placing plate 14 is re-aligned and pushed into the chute 12, so that the lower end thereof slides to the bottom of the chute 12 and tightly abuts against the inner wall of the blanking pipe 11, ensuring that there is no gap, then the carrying plate 18 is smoothly pulled outwards, under the limitation of the anti-dropping rope 19, the carrying plate 18 will not completely separate from the support sleeve 17, which can ensure smooth resetting and facilitate next assembly, and can effectively avoid part loss or misplacement. This operation process ensures smooth falling path of the profiles by completely pulling out the carrying plate 18 and tightly positioning the bottom of the placing plate 14, which fundamentally prevents jamming, and takes into account the loading efficiency and reusability of the parts; After the profile falls into the vertical section in the blanking pipe 11, the system synchronously starts the first electromagnet 20 and the second electromagnet 21, which cooperate to correct the levelness of the profile. The leveling mechanism mainly relies on the transverse attractive force exerted on the profile by the first electromagnet 20 and the second electromagnet 21. When the profile tilts during the falling process in the vertical section, the first electromagnet 20 and the second electromagnet 21, according to the real-time posture signal, through the differential magnetic pulling action, make the higher side of the profile receive a transverse attractive force, slow down the falling speed of the profile in the vertical direction, while the lower side keeps or accelerates the falling, so as to realize the dynamic adjustment of the horizontal posture of the profile. This vertical motion adjustment based on transverse magnetic pulling can gradually restore and maintain the horizontal posture of the profile during the continuous falling process, and effectively prevent the blockage caused by tilting. Through the cooperative work of the two, the system can adjust the levelness of the profile in the vertical section in real time, ensure the stable operation of the automatic feeding process, and is conducive to realizing efficient and uninterrupted automatic stamping operation. At the bottom of the third right-angle frame 30, the third electromagnet 31 is installed, and the sponge suction cup 32 is arranged below it. The ultrasonic sensor 22 monitors the number of profiles in the blanking pipe 11 by emitting sound waves downward and receiving echoes. When the number of profiles is detected to be lower than the set threshold, the system automatically triggers an alarm to remind the worker to replenish the profiles in time, so as to ensure the continuity and controllability of the stamping feeding process. This monitoring mechanism not only avoids production interruption caused by lack of materials through threshold warning, improves equipment utilization and production rhythm stability, but more importantly, timely replenishment can keep more profiles in the blanking pipe 11, thereby reducing the falling space of newly replenished profiles, effectively preventing tilting, jamming and other problems during vertical falling, significantly improving the smoothness and reliability of the blanking, further reducing the need for manual intervention, and enhancing the overall level of automation management. A slidable protective cover 23 is arranged on the periphery of the lower die 3, which is connected to the cross-shaped rib plate 2 by a plurality of springs 29. The protective cover 23 can effectively intercept the profiles flying out during the stamping process by its physical shielding effect, which not only directly blocks the flying objects to avoid equipment damage and safety hazards, but also buffers the impact force of the flying profiles through the springs 29 to absorb their kinetic energy, thereby further improving the overall safety of the stamping operation. 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. 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. 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. At the bottom of the third goniometer 30, a sponge suction cup 32 is arranged at the mounting position of the third electromagnet 31. The sponge suction cup 32 utilizes its flexible characteristics to play a buffering role when contacting the profile, thereby avoiding hard impact between the third electromagnet 31 and the profile, protecting the third electromagnet 31 and the surface of the profile. On the other hand, the deformable characteristics of the sponge suction cup 32 enable it to adapt to the profile contour, improving the tightness and stability of the adsorption. During the working process, the sponge suction cup 32 and the third electromagnet 31 are synchronously powered to realize double adsorption of the profile: the sponge suction cup 32 first grasps the profile through negative pressure, and then the third electromagnet 31 further adsorbs and fixes the profile through magnetic force. This double adsorption mechanism significantly enhances the reliability of grasping, effectively preventing the profile from loosening or deviating during the unloading process. When reaching the unloading position, both are synchronously powered off, and the profile is smoothly released. This design not only prolongs the service life of the components through buffering protection, but also improves the stability and safety of the unloading process through cooperative adsorption.

[0047] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative but not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, which are all within the protection of the present application.

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).

2. An automatic punching machine with a protective structure according to claim 1, characterized in that: The top of the feed tube (11) is provided with a convex-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 installed into the groove (12).

3. An automatic punching machine with a protective structure according to claim 2, characterized in that: 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).

4. An automatic punching machine with a protective structure according to claim 3, 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.

5. An automatic punching machine with a protective structure according to claim 4, characterized in that: An ultrasonic sensor (22) is installed on the upper side of the bend of the feed pipe (11).

6. An automatic punching machine with a protective structure according to claim 5, 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).

7. An automatic punch press with a protective structure according to claim 6, 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).

8. An automatic punching machine with a protective structure according to claim 7, characterized in that: Multiple vibration sensors (36) are installed on the protective cover (23).

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