Fabricated steel structure manufacturing and forming machining system and forming process

Abstract

The invention discloses a fabricated steel structure manufacturing and forming machining system and a forming process, and relates to the technical field of steel structures. The feeding component is used for placing a steel plate on the bending component; the limiting component is used for limiting the position of the steel plate; the discharging component is used for ejecting out the bent steel plate; the bending component comprises a hydraulic machine and a rotary table, a driving structure used for controlling the rotary table to rotate is arranged in the rack, a plurality of stations are annularly arranged on the rotary table at equal intervals, and a die is arranged on each station. The multi-station rotary table is arranged, corresponding to multiple times of bending, a steel plate is bent multiple times after being bent every time and rotated to the next station through the rotary table, multi-station simultaneous bending is achieved, and due to the fact that the length of the pressing head corresponding to each station is gradually increased in the rotating direction of the rotary table, the bending degree of the steel plate in the conveying process of the rotary table is gradually increased, and the bending efficiency is improved. And continuous feeding and discharging operation is achieved on the whole, and therefore the machining efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structures, and in particular to a fabrication, forming and processing system and a forming process for an assembled steel structure. Background Art

[0002] As a core form of modern building systems, prefabricated steel structures rely on steel components and specialized connection nodes, bolted or welded together for rapid assembly. Their advantages, including high construction efficiency, excellent seismic performance, low structural weight, low foundation costs, and outstanding space utilization, have made them a mainstream technology for industrialized construction. Within this system, steel connection nodes, as key force-transmitting components, are typically constructed from steel plates through processes such as stamping and drilling. Their manufacturing precision directly determines the overall assembly quality and safety performance of the structure.

[0003] The current manufacturing of prefabricated steel structure nodes faces significant technical bottlenecks: the traditional process uses a single piece of steel plate to stamp and form connectors in one go, and the rebound effect caused by the release of the material's elastic stress often leads to bending angle deviation and shape inaccuracy. In response to this problem, the prior art has proposed a prefabricated steel structure manufacturing and forming processing machine and method (such as announcement number CN113172429B). The scheme records that "the rotating motor drives the adjusting roller to rotate, and during the rotation of the adjusting roller, the punching block can be driven to move back and forth through the cooperation of the punching connecting plate and the reset spring. During the reciprocating movement of the punching block, the steel plate is punched, wherein the adjusting roller is composed of cam discs with different axial lengths, and the steel plate can be punched back and forth multiple times by using cam discs with different axial lengths to avoid the problem of rebound caused by elastic stress in the one-time forming of the steel plate, which affects the stamping effect of the steel plate." It aims to disperse stress through multiple stampings to suppress rebound.

[0004] However, this solution still has significant defects: in order to solve the problem of steel plate rebound due to elastic stress caused by one-time forming, the multiple reciprocating stamping mode adopted in the solution requires repeated positioning and clamping operations on a single steel plate. Each bending step must independently complete processes such as steel plate positioning, stamping mechanism adjustment and stress release, and cannot achieve continuous feeding and synchronous forming, resulting in an increase in single-piece processing time, which fundamentally restricts the efficiency of batch prefabrication required for prefabricated buildings. Summary of the Invention

[0005] The purpose of the present invention is to provide a prefabricated steel structure manufacturing and forming processing system and forming process to solve the problem that the multiple reciprocating stamping mode cannot achieve continuous feeding and synchronous forming, resulting in an increase in single-piece processing time, which fundamentally restricts the batch prefabrication efficiency required for prefabricated buildings.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An assembled steel structure manufacturing and forming processing system includes a frame and a bending component; further comprising: a feeding component for placing a steel plate on the bending component; a limiting component for limiting the position of the steel plate to ensure that the steel plate is centered along the bending line during the bending process; and a blanking component for ejecting the bent steel plate;

[0008] A further improvement of the technical solution of the present invention is that the bending component includes a hydraulic press and a turntable, a driving structure for controlling the rotation of the turntable is arranged inside the frame, a number of workstations are arranged in a circular shape at equal intervals on the turntable, each workstation is provided with a mold, the piston rod of the hydraulic press is fixedly connected to a pressure block, and a number of pressure heads are fixedly connected to the pressure block, the number of pressure heads is one less than the number of molds, and the length of each pressure head in the vertical direction gradually increases along the rotation direction of the turntable.

[0009] By adopting the above technical solution, a multi-station turntable is set up, corresponding to multiple bendings, the steel plate is formed through multiple bendings, and after each bending, it is rotated to the next station via the turntable, presenting simultaneous bending at multiple stations. Moreover, since the length of the pressure head corresponding to each station gradually increases along the rotation direction of the turntable, the bending degree of the steel plate gradually increases during the turntable transportation process, and overall continuous loading and unloading operations are achieved, thereby improving processing efficiency.

[0010] A further improvement of the technical solution of the present invention is that: the limiting component includes a mold base equal to the number of the mold, the mold is fixedly connected to the mold base, and mounting grooves are provided on both sides of the mold base. The top and bottom of the inner wall of the mounting groove are slidably connected with a rack, and the middle position of the mounting groove is rotatably connected with a gear. The central axes of the two gears are coaxial, and the gear located in the same mounting groove is meshed with the rack. A first slide bar is fixedly connected on both sides of the inner wall of the mounting groove, and a slider is slidably connected to the outside of the first slide bar. The slider corresponds to the rack one by one and is fixedly connected. The outside of the first slide bar is covered with a first spring, and four strip grooves are provided on the mold for this. The top of the slider is fixedly connected to the limiting plate, and the top of the limiting plate extends to the top of the mold through the strip groove.

[0011] By adopting the above technical solution, by setting a limiting component, the steel plate can be quickly centered and limited, so that it is not easily offset or misplaced, avoiding the problem of affecting the bending effect due to the multi-station bending lines of this solution not being in the same straight line.

[0012] The further improvement of the technical solution of the present invention is that: the feeding component includes a double-axis movable module, the movable end of the double-axis movable module is fixedly connected to an L-shaped frame, and the bottom of the L-shaped frame is fixedly connected to a clamp; the clamp includes a fixed plate, the bottom of the fixed plate is symmetrically fixedly connected to two baffles, the inner sides of the fixed plates are symmetrically fixedly connected to two second slide bars, the outside of the second slide bars are symmetrically slidably connected to two transmission blocks, the transmission blocks are provided with oblique grooves, and the top of the inner side of the fixed plate is symmetrically slidably connected to two H-shaped frames, the H-shaped frame consists of a cross bar and vertical bars symmetrically fixedly connected to both ends of the cross bar, the vertical bars are slidably connected to the fixed plate, the cross bar is slidably connected to the oblique groove, the top ends of the vertical bars extend to the top of the fixed plate, the outside of the second slide bar and on the side away from the transmission block are covered with a second spring, and the bottom of the transmission block is fixedly connected to a supporting rod.

[0013] By adopting the above technical solution, a feeding component that can automatically open the limit plate and place the steel plate is set, which can replace manual placement of the steel plate, thereby increasing the coordination of equipment operation and avoiding the risk of crushing. Specifically, the steel plate is placed on two supporting rods, and the operation of the dual-axis moving module is controlled to drive the L-shaped frame and the clamp to move to the discharge position, and then the clamp is controlled to descend by the vertical servo module. During the process, the H-shaped frame contacts and squeezes the turntable, and is subjected to reaction and moves upward relative to the fixed plate, so that the cross bar part of the H-shaped frame squeezes the inclined groove, causing the two transmission blocks to move to the side away from each other, on the one hand squeezing the second spring, and on the other hand driving the two supporting rods to move to the side away from each other, until both sides no longer support the steel plate, at which time the steel plate falls onto the mold under the action of gravity.

[0014] The further improvement of the technical solution of the present invention is that: a lifting servo module is fixedly connected to the table top of the frame, and the movable end of the lifting servo module is fixedly connected to the loading platform, the loading platform is used to place steel plates, and a limit frame is also fixedly connected to the table top of the frame, and a photoelectric sensor is installed on the upper part of the inner side of the limit frame, and the lifting servo module and the photoelectric sensor are both electrically connected to the external controller; two piston cylinders are fixedly connected to the top of the fixed plate, and two hollow rods are slidably connected to the top of the inner side of the fixed plate, the top of the hollow rod extends to the interior of the piston cylinder and is fixedly connected to the piston plate, the piston plate is tightly fitted to the inner wall of the piston cylinder, the bottom of the hollow rod is fixedly connected to a suction cup, and a through hole is opened in the middle position of the piston plate, and an air inlet pipe and an air outlet pipe are provided on the piston cylinder, and a one-way valve is provided inside the air inlet pipe and the air outlet pipe. The diameter of the air inlet pipe is smaller than that of the air outlet pipe, and a third spring is fixedly connected between the piston plate and the top of the inner wall of the piston cylinder.

[0015] The above technical solution is adopted by setting up a liftable loading platform for carrying steel plates. After each steel plate is picked up by the feeding component, the loading platform rises a distance, which is the thickness of the steel plate, so as to continuously provide steel plates to the feeding component; at the same time, the material is picked up by the fixture to realize automatic feeding.

[0016] A further improvement of the technical solution of the present invention is that the blanking component includes a mounting platform rotatably connected to the top of the turntable, a plurality of alignment holes are provided on the top of the mounting platform, a groove is provided at the central position of the bottom of the pressure block, and the inside of the groove is fixedly connected with alignment rods with the same number as the alignment holes, the alignment rods correspond to the alignment holes one by one and are slidably connected, an electric push rod is fixedly connected to the top of the mounting platform, the piston rod of the electric push rod is fixedly connected to the push block, a photoelectric sensor is installed on one side of the mounting platform, the light source illumination direction of the photoelectric sensor is parallel to the axial direction of the electric push rod, and the photoelectric sensor and the electric push rod are both electrically connected to the external controller.

[0017] With the above technical solution, after the steel plate is bent, the turntable rotates to station V. At this time, the photoelectric sensor detects the presence of the steel plate at the station, and the controller controls the electric push rod to push the push block to move, thereby ejecting the formed steel plate, thereby realizing automatic unloading.

[0018] A further improvement of the technical solution of the present invention is that: the driving structure includes a motor fixedly installed inside the frame, the output end of the motor extends to the table top of the frame and is fixedly connected to the main shaft, a spline groove is provided on the top of the main shaft, and a spline shaft is fixedly connected to the central position of the bottom of the turntable, and the spline shaft is plugged into the spline groove; the outside of the main shaft is fixedly connected to a pad, and a number of pressure rods are slidably connected through the pad, the top of the pressure rod is fixedly connected to the turntable, the bottom of the pressure rod is fixedly connected to a limiting block, and the outside of the pressure rod is covered with a fourth spring; a force ring is fixedly connected to the table top of the frame.

[0019] The above technical solution is adopted, by setting the turntable and the main shaft to be spline-connected, and at the same time, during the switching process (the turntable is not under pressure), the turntable is supported by the fourth spring. In this state, by controlling the operation of the motor to drive the main shaft to rotate, the turntable can be driven to rotate through the spline groove and the spline shaft; when the turntable is under pressure, the turntable moves downward for a short distance and then starts to bend. This distance is the distance between the force circle and the turntable. After the downward movement, the turntable is supported by the force circle, so the unbalanced force will not be directly applied to the main shaft, thereby increasing the service life of the drive structure.

[0020] A further improvement of the technical solution of the present invention is that: notches are symmetrically opened at the bottom of the fixing plate, and guide blocks are connected to the inside of the notches by screws. The guide blocks are L-shaped, and chamfers are set at the bottom of the side where the two guide blocks are close to each other.

[0021] Using the above technical solution, a guide block is set at the bottom of the baffle to limit the steel plate. The thickness of the protruding part of the guide block is smaller than the height of the inner side of the bracket, so that the bracket will not be blocked by the guide block when it moves to the side away from it.

[0022] The present invention also provides a fabrication process for an assembled steel structure, comprising the following steps:

[0023] S1: Synchronous loading and positioning: The steel plate to be processed is transported to the mold on one side of the turntable by the feeding component, and the steel plate is constrained by the limiting component to center the bending line;

[0024] The limiting components force the bending line to be centered, eliminating manual alignment errors and ensuring the consistency of subsequent bending angles.

[0025] S2: First bending: The turntable is driven to rotate 72° to transfer the steel plate to the next station. The hydraulic press drives the pressing block downward to perform the first bending on the steel plate with the shortest pressing head.

[0026] The shortest indenter is used to implement small-angle pre-bending (30°~40°) to establish an initial plastic hinge in the elastic deformation zone of the material and inhibit subsequent springback.

[0027] S3: Secondary bending: The turntable continues to rotate 72° to transfer the steel plate to the next station. The hydraulic press drives the pressing block downward and uses the second longest pressing head to bend the steel plate for the second time. The bending angle is greater than the first time.

[0028] The medium-angle bending (60° to 70°) of the secondary indenter expands the plastic deformation zone, triggers the work hardening effect, and provides a stable stress foundation for the final forming.

[0029] S4: Final bending: The turntable continues to rotate 72° to transfer the steel plate to the next station. The hydraulic press drives the pressing block downward and performs the third bending on the steel plate with the longest pressing head. The bending angle reaches the target value.

[0030] Use the longest press head to complete the target angle bending (85°~90°) and apply maximum pressure to offset the springback through interference plastic deformation.

[0031] S5: Synchronous unloading and circulation: The turntable continues to rotate 72° to move the formed steel structure gusset plate to the last station, and the workpiece is ejected through the unloading component;

[0032] The turntable rotation is synchronized with loading and unloading, which reduces the processing time of a single piece to a single bending cycle.

[0033] Due to the adoption of the above technical solution, the present invention has the following technical advancements compared to the prior art:

[0034] 1. The present invention sets a multi-station turntable, which corresponds to multiple bending. The steel plate is formed through multiple bending. After each bending, it is rotated to the next station via the turntable, presenting simultaneous bending at multiple stations. Moreover, since the length of the pressure head corresponding to each station gradually increases along the rotation direction of the turntable, the bending degree of the steel plate gradually increases during the turntable transportation process, and continuous loading and unloading operations are achieved as a whole, thereby improving processing efficiency.

[0035] 2. The present invention can quickly center the steel plate and limit it by setting a limiting component. The limiting plate is connected to the racks on both sides and meshes with the gears in the center to form a centering structure, so that the limiting plate is always in a symmetrical position; after the steel plate is placed between the limiting plates on both sides, the slider is pushed toward the middle under the action of the first spring, and the racks on both sides are pushed toward the adjacent side to move synchronously, and at the same time, the limiting plate is driven to squeeze the steel plate toward the adjacent side, so that the steel plate is centered, which is not easy to shift or dislocate, avoiding the problem of affecting the bending effect due to the multi-station bending lines of this scheme not being in the same straight line.

[0036] 3. The present invention provides a feeding component that can automatically open the limit plate and place the steel plate. During the process, a dual-axis moving module is used to control the position of the steel plate, and a clamp is used to pick up and place the steel plate, and the action of opening the limit component is performed, thereby replacing manual placement of the steel plate, thereby increasing the coordination of equipment operation and avoiding the risk of crushing injuries.

[0037] 4. The present invention sets the turntable and the main shaft in the form of a spline connection. At the same time, during the switching process (the turntable is not under pressure), the turntable is supported by the fourth spring. In this state, the main shaft is driven to rotate by controlling the motor, and the turntable can be driven to rotate through the spline groove and the spline shaft. When the turntable is under pressure, the turntable moves downward for a short distance and then starts to bend. The distance is the distance between the force circle and the turntable. After the downward movement, the turntable is supported by the force circle, so the unbalanced force will not be directly applied to the main shaft, thereby increasing the service life of the drive structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] Figure 1 A perspective view of the first perspective of the present invention;

[0040] Figure 2 A perspective view of the second viewing angle of the entire present invention;

[0041] Figure 3 A perspective view of a feeding component of the present invention;

[0042] Figure 4 This is a schematic diagram of the structure of the clamp of the present invention before taking the material;

[0043] Figure 5 This is a structural diagram of the material removal process of the fixture of the present invention;

[0044] Figure 6 Schematic diagram of the cross-sectional structure of the mold base of the present invention;

[0045] Figure 7Schematic diagram of the three-dimensional structure of the turntable of the present invention;

[0046] Figure 8 Schematic diagram of the split structure of the turntable and the frame of the present invention;

[0047] Figure 9 It is a structural schematic diagram of the pressing block and the pressing head of the present invention;

[0048] Figure 10 Schematic diagram of the top view of the turntable of the present invention;

[0049] Figure 11 Schematic diagram of the structure of the clamp of the present invention;

[0050] Figure 12 It is a structural schematic diagram of the suction cup of the present invention;

[0051] Figure 13 For the present invention Figure 4 Enlarged view of point A in the middle.

[0052] In the figure: 1. Frame; 2. Turntable; 3. Press block; 4. Press head; 5. Hydraulic press; 6. Mold; 7. Mold base; 8. Mounting slot; 9. Gear; 10. First slide bar; 11. Slider; 12. Rack; 13. First spring; 14. Strip groove; 15. Limit plate; 16. Dual-axis moving module; 17. L-shaped frame; 18. Fixed plate; 19. Baffle; 20. Second slide bar; 21. Transmission block; 22. Inclined slot; 23. Support rod; 24. Second spring; 25. Lifting servo module; 26. Loading 27. Stop frame; 28. Piston cylinder; 29. ​​Piston plate; 30. Third spring; 31. Hollow rod; 32. Suction cup; 33. Exhaust pipe; 34. Inlet pipe; 35. H-shaped frame; 36. Motor; 37. Spindle; 38. Spline groove; 39. Pressure rod; 40. Spline shaft; 41. Pad; 42. Force ring; 43. Fourth spring; 44. Stop block; 45. Mounting table; 46. Guide block; 47. Electric push rod; 48. Push block; 49. Groove; 50. Alignment rod; 51. Alignment hole. DETAILED DESCRIPTION

[0053] The present invention is further described in detail below with reference to the embodiments.

[0054] Example 1

[0055] like Figure 1 、 Figure 2 and Figure 7 As shown, the present invention provides an assembled steel structure manufacturing and forming processing system, including a frame 1 and a bending component; further comprising: a feeding component for placing a steel plate on the bending component; a limiting component for limiting the position of the steel plate to ensure that the position of the steel plate is centered along the bending line during the bending process; and a blanking component for ejecting the bent steel plate;

[0056] like Figure 9 As shown, the bending component includes a hydraulic press 5 and a turntable 2. A driving structure for controlling the rotation of the turntable 2 is provided inside the frame 1. Several workstations are arranged in a circular shape and at equal intervals on the turntable 2. A mold 6 is provided on each workstation. The piston rod of the hydraulic press 5 is fixedly connected to a pressure block 3. Several pressure heads 4 are fixedly connected to the pressure block 3. The number of pressure heads 4 is one less than the number of molds 6. The length of each pressure head 4 in the vertical direction gradually increases along the rotation direction of the turntable 2.

[0057] In this embodiment, by setting a multi-station turntable 2, corresponding to multiple bending, the steel plate is formed through multiple bending, and after each bending, it is rotated to the next station via the turntable 2, presenting multi-station simultaneous bending, and since the length of the pressing head 4 corresponding to each station gradually increases along the rotation direction of the turntable 2, the bending degree of the steel plate gradually increases during the conveying process of the turntable 2 (under the condition of the same downward pressure of the pressing block 3), and overall continuous loading and unloading operations are achieved, thereby improving processing efficiency;

[0058] Specifically, such as Figure 10 As shown, there are five workstations on the turntable 2, corresponding to Ⅰ, Ⅱ, Ⅲ, Ⅳ, and Ⅴ in the figure, among which, workstation Ⅰ is the loading workstation, and the steel plate is placed on workstation Ⅰ through the feeding component, and then the turntable 2 is controlled to rotate by the driving structure. The turntable 2 rotates 72° each time, and is bent when it rotates to workstations Ⅱ, Ⅲ and Ⅳ, and the bending degree of the three workstations gradually increases. Workstation V is the unloading workstation, and the steel structure (which has been bent and formed by the steel plate) rotated to this workstation is ejected by the unloading component. During the operation, the turntable 2 rotates once after each side bending action, and performs a loading and unloading operation, so there is no need to wait for multiple bendings before loading and unloading, which improves the processing efficiency.

[0059] Example 2

[0060] like Figure 6 、 Figure 7 and Figure 8As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the limiting component includes a mold base 7 equal to the number of the mold 6, the mold 6 is fixedly connected to the mold base 7, and mounting grooves 8 are provided on both sides of the mold base 7. The top and bottom of the inner wall of the mounting groove 8 are slidably connected with a rack 12, and the middle position of the mounting groove 8 is rotatably connected with a gear 9. The central axes of the two gears 9 are coaxial, and the gear 9 located in the same mounting groove 8 is meshed with the rack 12. Both sides of the inner wall of the mounting groove 8 are fixedly connected with a first slide bar 10, and the outside of the first slide bar 10 is slidably connected with a slider 11. The slider 11 corresponds to the rack 12 one by one and is fixedly connected. The outside of the first slide bar 10 is covered with a first spring 13, and four strip grooves 14 are provided on the mold 6 for this. The top of the slider 11 is fixedly connected to the limiting plate 15, and the top of the limiting plate 15 extends to the top of the mold 6 through the strip groove 14.

[0061] Since the steel plate needs to rotate with the turntable 2 after each bending, the steel plate will be slightly misaligned during the movement of the turntable 2, resulting in deviation in the bending position each time, affecting the bending effect. Therefore, it is necessary to limit the steel plate during the bending process.

[0062] In this embodiment, by setting a limit component, the steel plate can be quickly centered and limited, so that it is not easy to deviate or misaligned, and the problem of affecting the bending effect due to the multi-station bending lines of this scheme not being in the same straight line is avoided. Specifically, by pressing the limit plate 15 to the side away from each other until the steel plate can be accommodated, the rack 12 will be driven to move during the pressing process. On the one hand, the first spring 13 will be squeezed through the slider 11, and on the other hand, the gear 9 will be driven to rotate. The racks 12 on both sides are engaged with the gear 9 in the central part to form a centering structure, so that the limit plate 15 is always in a symmetrical position; then the steel plate is placed between the limit plates 15 on both sides, and then the limit plate 15 is released, so that under the action of the first spring 13, the slider 11 is pushed to reset, and the racks 12 on both sides are pushed to move synchronously toward the side close to each other, while driving the limit plate 15 to push the steel plate toward the side close to each other, so that the steel plate is centered.

[0063] Example 3

[0064] like Figure 1 、 Figure 3 and Figure 11As shown, on the basis of Example 2, the present invention provides a technical solution: preferably, the feeding component includes a double-axis moving module 16, the movable end of the double-axis moving module 16 is fixedly connected to an L-shaped frame 17, and the bottom of the L-shaped frame 17 is fixedly connected to a clamp; the clamp includes a fixed plate 18, the bottom of the fixed plate 18 is symmetrically fixedly connected to two baffles 19, the inner side of the fixed plate 18 is symmetrically fixedly connected to two second slide bars 20, the outer side of the second slide bar 20 is symmetrically slidably connected to two transmission blocks 21, the transmission block 21 is provided with an oblique groove 22, and the top of the inner side of the fixed plate 18 is symmetrically slidably connected to two H-shaped frames 35, the H-shaped frame 35 consists of a cross bar and a vertical bar symmetrically fixedly connected to the two ends of the cross bar, the vertical bar is slidably connected to the fixed plate 18, the cross bar is slidably connected to the oblique groove 22, the top of the vertical bar extends to the top of the fixed plate 18, the outer side of the second slide bar 20 and located on the side away from the transmission block 21 are both covered with a second spring 24, and the bottom of the transmission block 21 is fixedly connected to a supporting rod 23.

[0065] Since the limiting component is provided, the limiting plate 15 needs to be opened before the steel plate can be placed. The manual placement method is cumbersome and labor-intensive, and is difficult to match the working cycle of the turntable 2. There is a risk of crushing during the operation.

[0066] By setting a feeding component that can automatically open the limit plate 15 and place the steel plate, it can replace manual placement of the steel plate, thereby increasing the coordination of equipment operation and avoiding the risk of crushing. Specifically, the steel plate is placed on two supporting rods 23, and the supporting rods 23 are U-shaped; the dual-axis moving module 16 includes two mutually perpendicular servo modules, including a vertical servo module and a horizontally arranged servo module, wherein the vertical servo module is installed at the active end of the horizontal servo module, and the L-shaped The frame 17 and the clamp move to the discharge position, and then the clamp is controlled to descend by the vertical servo module. During the process, the H-shaped frame 35 contacts and squeezes the turntable 2, and is subjected to reaction and moves upward relative to the fixed plate 18, so that the cross bar part of the H-shaped frame 35 squeezes the inclined groove 22, causing the two transmission blocks 21 to move to the side away from each other, squeezing the second spring 24 on the one hand, and driving the two supporting rods 23 to move to the side away from each other on the other hand, until both sides no longer support the steel plate. At this time, the steel plate falls onto the mold 6 under the action of gravity.

[0067] Example 4

[0068] like Figure 4 、 Figure 12 and Figure 13As shown, on the basis of Example 3, the present invention provides a technical solution: preferably, a lifting servo module 25 is fixedly connected to the table of the frame 1, and the movable end of the lifting servo module 25 is fixedly connected to the loading platform 26, and the loading platform 26 is used to place the steel plate. A limit frame 27 is also fixedly connected to the table of the frame 1, and a photoelectric sensor is installed on the upper part of the inner side of the limit frame 27. The lifting servo module 25 and the photoelectric sensor are both electrically connected to the external controller; the top of the fixed plate 18 is fixedly connected to two piston cylinders 28, and the top of the inner side of the fixed plate 18 is slidably connected to the Two hollow rods 31 are connected, the top of the hollow rod 31 extends to the inside of the piston cylinder 28 and is fixedly connected to the piston plate 29, the piston plate 29 is tightly fitted to the inner wall of the piston cylinder 28, and the bottom of the hollow rod 31 is fixedly connected to a suction cup 32. A through hole is provided in the middle of the piston plate 29, and an air inlet pipe 34 and an air outlet pipe 33 are provided on the piston cylinder 28. A one-way valve is provided inside the air inlet pipe 34 and the air outlet pipe 33. The diameter of the air inlet pipe 34 is smaller than that of the air outlet pipe 33. A third spring 30 is fixedly connected between the piston plate 29 and the top of the inner wall of the piston cylinder 28.

[0069] In the above scheme, the loading process relies on manual placement of the steel plate on the supporting rods 23, which is cumbersome and difficult to place the steel plate in a relatively central position between the two supporting rods 23. Although it does not affect the position of the bending line (the deviation direction is in the same straight line as the bending line), when the two supporting rods 23 move away from each other (releasing the steel plate), one side will be released first, resulting in misalignment of the steel plate.

[0070] A liftable loading platform 26 is provided for carrying steel plates. After each steel plate is taken by the feeding component, the loading platform 26 rises a distance which is equal to the thickness of the steel plate, so as to continuously provide steel plates to the feeding component. Specifically, the steel plates are neatly stacked on the loading platform 26 and are in contact with the limiting frames 27 on all sides. When taking the material, the dual-axis moving module 16 is controlled to work so that the clamp moves to the top of the loading platform 26, and then the clamp moves downward. During this process, the bottom of the H-shaped frame 35 contacts and is pushed upward by the limiting frame 27, so that the supporting rod 23 moves to the side away from it (the specific principle is the same as the above-mentioned steel plate placement process) until the suction cup 32 contacts the steel plate, and then the clamp is controlled to continue to move downward, so that the hollow rod 31 is subjected to the reaction force to move upward, and pushes the piston plate 29 to move upward. At this time, positive pressure is generated in the piston cylinder 28, the one-way valve inside the outlet pipe 33 is connected, and the one-way valve inside the inlet pipe 34 is blocked. The air in the piston cylinder 28 is discharged from the outlet pipe 33, and at the same time, the third spring 30 is squeezed to accumulate potential energy.

[0071] It should be noted that during the process of the steel plate moving from the bottom of the supporting rod 23 to the top, the distance between the two supporting rods 23 is greater than the width of the steel plate. Then, by controlling the operation of the dual-axis moving module 16, the clamp is moved upward. During this process, the transmission block 21 quickly resets under the rebound action of the first spring 13, and drives the two supporting rods 23 to move toward the side close to each other until they are under the steel plate; at the same time, under the rebound of the third spring 30, the piston plate 29 resets downward and pushes the hollow rod 31 downward, so that negative pressure is generated in the piston cylinder 28. At this time, the one-way valve inside the air inlet pipe 34 is connected, and the one-way valve inside the air outlet pipe 33 is blocked. However, due to the influence of the diameter of the air inlet pipe 34, the piston plate 29 resets downward and pushes the hollow rod 31 to move downward, so that negative pressure is generated in the piston cylinder 28. At this time, the one-way valve inside the air inlet pipe 34 is connected, and the one-way valve inside the air outlet pipe 33 is blocked. The air inlet pipe 34 is a thin tube to limit its air flow, thereby slowing down the reset of the piston plate 29. Therefore, the outside air will only enter slowly, and the negative pressure inside the piston cylinder 28 will not be released immediately. Therefore, the steel plate will be sucked by the suction cup 32 in a short time, and the steel plate will be released when the negative pressure inside the piston cylinder 28 is completely released. At this time, the clamp has risen to separate from the limit frame 27, and the support rod 23 is under the steel plate. Therefore, the steel plate will fall on the support rod 23 when it is released, thereby completing the automatic placement of the steel plate on the support rod 23.

[0072] After each material is taken, the photoelectric sensor located in the limit frame 27 detects a signal and controls the lifting servo module 25 to work, raising the loading platform 26 by a distance equal to the thickness of the steel plate.

[0073] Example 5

[0074] like Figure 7 and Figure 10 As shown, on the basis of Example 4, the present invention provides a technical solution: preferably, the blanking component includes a mounting platform 45 rotatably connected to the top of the turntable 2, a plurality of alignment holes 51 are provided on the top of the mounting platform 45, and a groove 49 is provided at the central position of the bottom of the pressing block 3. The interior of the groove 49 is fixedly connected with alignment rods 50 with the same number as the alignment holes 51. The alignment rods 50 correspond to the alignment holes 51 one by one and are slidably connected. An electric push rod 47 is fixedly connected to the top of the mounting platform 45, and the piston rod of the electric push rod 47 is fixedly connected to the push block 48. A photoelectric sensor is installed on one side of the mounting platform 45. The light source irradiation direction of the photoelectric sensor is parallel to the axial direction of the electric push rod 47. The photoelectric sensor and the electric push rod 47 are both electrically connected to an external controller.

[0075] In this embodiment, after the steel plate is bent, the turntable 2 rotates to the workstation V. At this time, the photoelectric sensor detects the presence of the steel plate at the workstation, and the controller controls the electric push rod 47 to work, pushing the push block 48 to move, thereby ejecting the formed steel plate, thereby realizing automatic unloading.

[0076] Since the unloading structure is installed on the turntable 2, and since the action area of ​​the electric push rod 47 needs to always face the workstation V, the mounting platform 45 cannot rotate with the turntable 2. Therefore, the mounting platform 45 is structurally connected to the turntable 2 for rotation, and the mounting platform 45 and the groove 49 at the bottom of the pressing block 3 are constrained by two alignment rods 50, so that the mounting platform 45 will not rotate with the turntable 2.

[0077] Example 6

[0078] like Figure 1 、 Figure 7 and Figure 8 As shown, on the basis of Example 5, the present invention provides a technical solution: preferably, the driving structure includes a motor 36 fixedly mounted inside the frame 1, the output end of the motor 36 extends to the table top of the frame 1 and is fixedly connected to a main shaft 37, a spline groove 38 is provided at the top of the main shaft 37, and a spline shaft 40 is fixedly connected to the central position of the bottom of the turntable 2, and the spline shaft 40 is plugged into the spline groove 38; the outside of the main shaft 37 is fixedly connected to a pad 41, and a number of pressure rods 39 are slidably connected to the pad 41, the top of the pressure rod 39 is fixedly connected to the turntable 2, the bottom of the pressure rod 39 is fixedly connected to a limiting block 44, and the outside of the pressure rod 39 is covered with a fourth spring 43; a force ring 42 is fixedly connected to the table top of the frame 1.

[0079] Since the forming method adopts the form of three stations corresponding to three different degrees of bending, the pressure on the turntable 2 is biased to one side for a long time (there are five stations in total, and the pressure is applied to three adjacent stations, and the pressure applied to these three stations is also different). Therefore, the driving structure is subjected to unbalanced force, which reduces the service life of the driving structure;

[0080] By setting the turntable 2 and the main shaft 37 in the form of a spline connection, and during the switching process (the turntable 2 is not under pressure), the turntable 2 is supported by the fourth spring 43. In this state, by controlling the motor 36 to work and drive the main shaft 37 to rotate, the turntable 2 can be driven to rotate through the spline groove 38 and the spline shaft 40; when the turntable 2 is under pressure, the turntable 2 moves downward for a short distance and then starts to bend. This distance is the distance between the force ring 42 and the turntable 2. After the downward movement, the turntable 2 is supported by the force ring 42, so the unbalanced force will not be directly applied to the main shaft 37, thereby increasing the service life of the drive structure.

[0081] like Figure 11 and Figure 13 As shown, preferably, notches are symmetrically provided at the bottom of the fixing plate 18, and guide blocks 46 are connected to the inside of the notches by screws. The guide blocks 46 are L-shaped, and chamfers are provided at the bottom of the side where the two guide blocks 46 are close to each other.

[0082] Since the steel plate is placed on the support rack during loading and needs to be released by the suction cup 32 during the placement process, in order to avoid deviation when the suction cup 32 releases the steel plate and during the feeding process, a guide block 46 is set at the bottom of the baffle 19 to limit the steel plate. The thickness of the protruding part of the guide block 46 is less than the height of the inner side of the bracket, so that the bracket will not be blocked by the guide block 46 when it moves to the side away from it.

[0083] The present invention also provides a fabrication process for an assembled steel structure, comprising the following steps:

[0084] S1: Synchronous loading and positioning: The steel plate to be processed is transported to the mold 6 on one side of the turntable 2 by the feeding component, and the steel plate is constrained by the limiting component to center the bending line;

[0085] The limiting components force the bending line to be centered, eliminating manual alignment errors and ensuring the consistency of subsequent bending angles.

[0086] S2: First bending: The turntable 2 is driven to rotate 72° to transfer the steel plate to the next station. The hydraulic press 5 drives the pressing block 3 downward to perform the first bending on the steel plate with the shortest pressing head 4.

[0087] The shortest indenter 4 is used to implement a small-angle pre-bending (30° to 40°) to establish an initial plastic hinge in the elastic deformation zone of the material and suppress subsequent springback.

[0088] S3: Secondary bending: Turntable 2 continues to rotate 72° to transfer the steel plate to the next station. Hydraulic press 5 drives pressing block 3 downward and uses the second longest pressing head 4 to perform a second bending on the steel plate. The bending angle is greater than the first bending angle.

[0089] The secondary long punch is bent at 4 angles (60° to 70°) to expand the plastic deformation zone, triggering the work hardening effect and providing a stable stress foundation for the final forming.

[0090] S4: Final bending: Turntable 2 continues to rotate 72° to transfer the steel plate to the next station. Hydraulic press 5 drives pressing block 3 downward and performs the third bending on the steel plate with the longest pressing head 4 until the bending angle reaches the target value.

[0091] The target angle bending (85° to 90°) is completed with the longest press head 4 and the maximum pressure is applied to offset the springback through interference plastic deformation.

[0092] S5: Synchronous unloading and circulation: Turntable 2 continues to rotate 72° to move the formed steel structure gusset plate to the last station, and the workpiece is ejected through the unloading component;

[0093] The rotation of turntable 2 is synchronized with loading and unloading, which reduces the processing time of a single piece to a single bending cycle.

[0094] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made based on the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A fabricated steel structure forming and processing system, comprising a frame (1) and a bending component; characterized in that: Also includes: A feeding component, used for placing the steel plate on the bending component; The limiting component is used to limit the position of the steel plate to ensure that the steel plate is centered along the bending line during the bending process; Blanking parts, used to eject the bent steel plates; The bending component comprises a hydraulic press (5) and a turntable (2); a driving structure for controlling the rotation of the turntable (2) is provided inside the frame (1); a plurality of workstations are arranged in a circular shape and at equal intervals on the turntable (2); a mold (6) is provided on each workstation; a piston rod of the hydraulic press (5) is fixedly connected to a pressure block (3); a plurality of pressure heads (4) are fixedly connected to the pressure block (3); the number of the pressure heads (4) is one less than the number of the molds (6); and the length of each pressure head (4) in the vertical direction gradually increases along the rotation direction of the turntable (2).

2. The fabricated steel structure forming and processing system according to claim 1, characterized in that: The limiting component includes a mold base (7) equal in number to the mold (6), the mold (6) is fixedly connected to the mold base (7), both sides of the mold base (7) are provided with mounting grooves (8), the top and bottom of the inner wall of the mounting groove (8) are slidably connected with a rack (12), the middle position of the mounting groove (8) is rotatably connected with a gear (9), the central axes of the two gears (9) are coaxial, the gear (9) located in the same mounting groove (8) is meshed with the rack (12), and the inner wall of the mounting groove (8) is provided with a plurality of mounting grooves (8). Both sides are fixedly connected with a first slide bar (10), the outside of the first slide bar (10) is slidably connected with a slider (11), the slider (11) corresponds to the rack (12) one by one and is fixedly connected, the outside of the first slide bar (10) is covered with a first spring (13), four strip grooves (14) are opened on the mold (6), the top of the slider (11) is fixedly connected with a limit plate (15), and the top of the limit plate (15) extends to the top of the mold (6) through the strip groove (14).

3. The fabrication and forming system for prefabricated steel structures according to claim 2, characterized in that: The feeding component comprises a double-axis movable module (16), the movable end of the double-axis movable module (16) is fixedly connected to an L-shaped frame (17), and the bottom of the L-shaped frame (17) is fixedly connected to a clamp; the clamp comprises a fixed plate (18), the bottom of the fixed plate (18) is symmetrically fixedly connected to two baffles (19), the inner sides of the fixed plate (18) are symmetrically fixedly connected to two second slide bars (20), the outer sides of the second slide bars (20) are symmetrically slidably connected to two transmission blocks (21), and the transmission blocks (21) are provided with inclined grooves. (22), the top of the inner side of the fixed plate (18) is symmetrically slidably connected to two H-shaped frames (35), the H-shaped frame (35) is composed of a cross bar and vertical bars symmetrically fixedly connected to the two ends of the cross bar, the vertical bars are slidably connected to the fixed plate (18), the cross bar is slidably connected to the inclined groove (22), the top ends of the vertical bars extend to the top of the fixed plate (18), the outside of the second sliding bar (20) and the side away from the transmission block (21) are both covered with a second spring (24), and the bottom of the transmission block (21) is fixedly connected to a supporting rod (23).

4. The fabricated steel structure forming and processing system according to claim 3, characterized in that: A lifting servo module (25) is fixedly connected to the table of the frame (1), and a movable end of the lifting servo module (25) is fixedly connected to a loading platform (26), and the loading platform (26) is used to place steel plates. A limiting frame (27) is also fixedly connected to the table of the frame (1), and a photoelectric sensor is installed on the upper part of the inner side of the limiting frame (27). The lifting servo module (25) and the photoelectric sensor are both electrically connected to an external controller; the top of the fixed plate (18) is fixedly connected to two piston cylinders (28), and the top of the inner side of the fixed plate (18) is slidably connected to two hollow rods (31), and the hollow rods (31) The top of the hollow rod (31) extends to the interior of the piston cylinder (28) and is fixedly connected to a piston plate (29). The piston plate (29) is tightly fitted with the inner wall of the piston cylinder (28). The bottom of the hollow rod (31) is fixedly connected to a suction cup (32). A through hole is opened in the middle of the piston plate (29). An air inlet pipe (34) and an air outlet pipe (33) are provided on the piston cylinder (28). A one-way valve is provided inside the air inlet pipe (34) and the air outlet pipe (33). The diameter of the air inlet pipe (34) is smaller than that of the air outlet pipe (33). A third spring (30) is fixedly connected between the piston plate (29) and the top of the inner wall of the piston cylinder (28).

5. The fabricated steel structure forming and processing system according to claim 4, characterized in that: The blanking component includes a mounting platform (45) rotatably connected to the top of the turntable (2), a plurality of alignment holes (51) are provided on the top of the mounting platform (45), a groove (49) is provided at the central position of the bottom of the pressing block (3), and the interior of the groove (49) is fixedly connected with alignment rods (50) having the same number as the alignment holes (51), and the alignment rods (50) correspond to the alignment holes (51) one by one and are slidably connected, an electric push rod (47) is fixedly connected to the top of the mounting platform (45), and the piston rod of the electric push rod (47) is fixedly connected to the push block (48), and a photoelectric sensor is installed on one side of the mounting platform (45), and the light source irradiation direction of the photoelectric sensor is parallel to the axial direction of the electric push rod (47), and the photoelectric sensor and the electric push rod (47) are both electrically connected to an external controller.

6. The fabricated steel structure forming and processing system according to claim 1, characterized in that: The driving structure includes a motor (36) fixedly mounted inside the frame (1), an output end of the motor (36) extending to the table top of the frame (1) and fixedly connected to a main shaft (37), a spline groove (38) being provided at the top end of the main shaft (37), a spline shaft (40) being fixedly connected to the central position of the bottom of the turntable (2), and the spline shaft (40) being plugged into and matched with the spline groove (38); a pad (41) being fixedly connected to the outside of the main shaft (37), a plurality of pressure rods (39) being slidably connected through the pad (41), the top of the pressure rod (39) being fixedly connected to the turntable (2), the bottom of the pressure rod (39) being fixedly connected to a limit block (44), and the outside of the pressure rod (39) being sleeved with a fourth spring (43); and a force ring (42) being fixedly connected to the table top of the frame (1).

7. The fabrication and forming system for prefabricated steel structures according to claim 4, characterized in that: The bottom of the fixing plate (18) is symmetrically provided with notches, and the inside of the notches is connected with a guide block (46) by screws. The guide block (46) is L-shaped, and a chamfer is set at the bottom of the side where the two guide blocks (46) are close to each other.

8. A fabrication process for an assembled steel structure, characterized by: The fabrication and forming processing system for an assembled steel structure according to any one of claims 1 to 7 comprises the following steps: S1: Synchronous loading and positioning: The steel plate to be processed is transported to the mold (6) on one side of the turntable (2) by the feeding component, and the steel plate is constrained by the limiting component so that the bending line is centered; S2: First bending: the turntable (2) is driven to rotate 72° to transfer the steel plate to the next station, and the hydraulic press (5) drives the pressing block (3) downward to perform the first bending on the steel plate with the shortest pressing head (4); S3: Secondary bending: the turntable (2) continues to rotate 72° to transfer the steel plate to the next station, the hydraulic press (5) drives the pressing block (3) downward, and the second longest pressing head (4) is used to bend the steel plate for the second time, and the bending angle is greater than the first time; S4: Final bending: The turntable (2) continues to rotate 72° to transfer the steel plate to the next station, and the hydraulic press (5) drives the pressing block (3) downward to perform the third bending on the steel plate with the longest pressing head (4), and the bending angle reaches the target value; S5: Synchronous blanking and circulation: The turntable (2) continues to rotate 72° to move the formed node plate to the last station, and the workpiece is ejected through the blanking component.

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