A single-head steel bar bending and hoop forming device

Abstract

The present invention discloses a single-head steel bar bending and forming device, which includes a straightening machine, a conveying mechanism, a bending and forming mechanism, a clamping mechanism, and a blanking mechanism. The straightening machine, the conveying mechanism, and the bending and forming mechanism are arranged horizontally in sequence; the clamping mechanism is connected to the bending and forming mechanism; the blanking mechanism is arranged in front of the bending and forming mechanism; the bending and forming mechanism includes a bracket, a mounting frame, a bending and forming platform, and a bending and forming assembly; the bracket is arranged horizontally; the bending and forming platform is slidably connected to the bracket; the mounting frame is fixedly connected to the bending and forming platform; the bending and forming assembly is connected to the mounting frame. The present invention can realize the integration of straightening, conveying, bending and forming, and blanking of single-head steel bars, with high automation, time-saving and labor-saving, high work efficiency, and has good application prospects.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel bar processing, and particularly relates to a single-head steel bar bending and forming device. Background Art

[0002] Steel bars refer to steel materials used in reinforced concrete and prestressed reinforced concrete, with a circular cross-section, and sometimes a square cross-section with rounded corners. Traditional steel bar bending is usually mainly powered by manpower, and the steel bar is bent at a certain angle by driving a rotating wheel through the lever principle. This method not only has a high labor intensity and high manpower cost, but also is time-consuming and laborious, and has low work efficiency.

[0003] There are some automatic bending devices in the prior art, but such devices are basically semi-automatic and cannot achieve full-automatic bending and forming. The degree of automation is still low, and for steel bars with multiple bending positions, they cannot be formed at one time and need to be bent repeatedly, resulting in low processing efficiency. In addition, the current devices still use the principle of driving a rotating wheel for bending. During the bending process, a large bending load will be generated. After the device is used for a period of time, the rotating wheel and the bending head will be deformed or even malfunction due to the influence of the bending load, thus affecting the processing effect, reducing the processing efficiency, and increasing the processing cost. Summary of the Invention

[0004] The purpose of the present invention is to provide a single-head steel bar bending and forming device to solve the technical problems raised in the above background art.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A single-head steel bar bending and forming device includes a straightening machine, a conveying mechanism, a bending mechanism, a clamping mechanism, and a blanking mechanism. The straightening machine, the conveying mechanism, and the bending mechanism are arranged horizontally in sequence; the clamping mechanism is connected to the bending mechanism; the blanking mechanism is arranged in front of the bending mechanism; the bending mechanism includes a bracket, a mounting frame, a bending platform, and a bending component; the bracket is arranged horizontally; the bending platform is slidably connected to the bracket; the mounting frame is fixedly connected to the bending platform; the bending component is connected to the mounting frame.

[0007] Further, the bracket is horizontally arranged left and right, horizontal slide rails are provided on the front and rear sides of its top surface, and a rack is provided on the upper side of the rear part inside the bracket.

[0008] Further, the mounting bracket is arranged inside the support, and a moving motor is provided at the rear side of the middle part thereof; the moving motor is horizontally arranged front and back, and a moving gear is vertically and fixedly sleeved on the output shaft thereof; the moving gear meshes with the rack; the bending hoop platform is horizontally arranged, the bottom surface thereof is fixedly connected with the top surface of the mounting bracket, and pulleys corresponding to the sliding rails are arranged on both the front and rear sides of the bending hoop platform, and a through opening is formed on the left side of the top surface.

[0009] Further, the bending hoop assembly includes a mounting table, a connecting cylinder, a first core shaft, a second core shaft, a third core shaft, a fourth core shaft, a connecting plate, a rotating table, a limiting block, and a bending hoop head. The mounting seat is vertically arranged, and the rear end thereof is fixedly connected with the inner rear side of the mounting bracket; the connecting cylinder is fixedly arranged vertically at the front end of the mounting table; the first core shaft, the second core shaft, the third core shaft, and the fourth core shaft are vertically arranged, and the second core shaft, the third core shaft, and the fourth core shaft are vertically penetrated inside; the upper part of the outer side wall of the fourth core shaft is rotatably connected with the lower part of the inner wall of the connecting cylinder, and the lower part extends downward out of the connecting cylinder and is rotatably connected with the driving assembly; the lower end of the second core shaft is in spline connection with the top end of the fourth core shaft, the upper part thereof is rotatably connected with the inner wall of the connecting cylinder, and the top end extends upward out of the opening of the bending hoop platform; the first core shaft is arranged inside the second core shaft and the fourth core shaft and is respectively rotatably connected with the second core shaft and the fourth core shaft, and the top end of the first core shaft extends upward out of the top surface of the second core shaft; the top end of the third core shaft is in spline connection with the bottom end of the first core shaft, and the lower part of the outer side wall is fixedly connected with the mounting bracket through the connecting plate; the rotating table is fixedly sleeved on the top end of the second core shaft, and the top surface thereof is flush with the top surface of the first core shaft; the bending hoop head is arranged on the top surface of the rotating table; the limiting blocks are horizontally arranged on the top surface of the first core shaft from left to right, and two are arranged at intervals front and back.

[0010] Further, the driving assembly includes a driving motor, a driving gear, and a driven gear. The driving motor is vertically arranged in the middle of the inner rear side of the mounting bracket and is located on the right side of the bending hoop assembly, and the output shaft thereof faces upward; the driving gear is fixedly sleeved on the output shaft of the driving motor; the driven gear is fixedly sleeved on the outer side wall of the fourth core shaft and is in belt transmission connection with the driving gear.

[0011] Further, a slot is formed on the front side wall of the connecting cylinder corresponding to the second core shaft; and a lifting assembly is further included; the lifting assembly includes a first lifting cylinder, a second cylinder mounting seat, a second lifting cylinder, and a connecting member; the first lifting cylinder is vertically arranged and fixedly connected with the bottom end of the third core shaft, and the piston rod thereof extends upward and is connected with the bottom end of the first core shaft; the second cylinder mounting seat is fixedly arranged on the connecting cylinder and is respectively located on the upper and lower sides of the slot; the second lifting cylinder is vertically arranged between the second cylinder mounting seats; the connecting member is horizontally arranged, one end thereof is fixedly connected with the sliding table of the second lifting cylinder, and the other end thereof passes through the slot and is fixedly connected with the second core shaft.

[0012] Further, the blanking mechanism includes a blanking bench, a left positioning component, a right positioning component, and a center positioning component; the blanking bench is horizontally arranged on the front side of the hoop bending mechanism; the left positioning component includes a side positioning bench, a connecting seat, a side lifting cylinder, a side mounting seat, a side positioning cylinder, and a side positioning plate; the connecting seat is vertically arranged, and its left end face is connected to the left side inside the blanking bench; the side lifting cylinder is vertically and fixedly arranged on the right end face of the connecting seat; the left end face of the side mounting seat is connected to the sliding table of the side lifting cylinder; the side positioning cylinder is horizontally arranged on the top surface of the side mounting seat, and its sliding table faces the right side; the side positioning plate is horizontally arranged front and back, and its left end face is fixedly connected to the right end of the sliding table; the side positioning bench is horizontally arranged on the left side of the top surface of the blanking bench, and a vertically penetrating opening is provided on its top surface corresponding to the side positioning cylinder and the positioning plate; the right positioning component is arranged on the right side of the blanking bench; the center positioning component is arranged in the middle of the blanking bench.

[0013] Further, the right positioning component has the same structure as the left positioning component and is symmetrically arranged on the right side of the top surface of the blanking bench.

[0014] Further, the center positioning bench, the center positioning seat, the lower mounting plate, the upper mounting plate, the guiding columns, the center lifting cylinder, the third positioning cylinder, the fourth positioning cylinder, the first positioning block, and the second positioning block; the center positioning bench is horizontally arranged; the center positioning seat is arranged at the rear side in the middle inside the blanking bench; the lower mounting plate is horizontally arranged left and right on the top surface of the center positioning seat; the guiding columns are fixedly arranged vertically at the four corners of the upper mounting plate; the upper mounting plate is movably sleeved on the guiding columns and is located above the lower mounting plate; the center lifting cylinder is arranged on the bottom surface of the lower mounting plate, and its piston rod passes through the top surface of the lower mounting plate and is fixedly connected to the bottom surface of the upper mounting plate; there are two third positioning cylinders, which are respectively horizontally arranged on the left and right sides of the top surface of the upper mounting plate; the first positioning block is of an L-shaped structure, its bottom is fixedly connected to the slider of the third positioning cylinder, and one end away from the center of the upper mounting plate is bent upward; the fourth positioning cylinder is horizontally arranged front and back; the second positioning block is of an L-shaped structure, its bottom is fixedly connected to the slider of the fourth positioning cylinder, and one end away from the center of the upper mounting plate is bent upward; the center positioning bench is horizontally arranged in the middle of the top surface of the blanking bench, and openings are provided on its top surface corresponding to the positions of the first positioning block and the second positioning block.

[0015] Further, a through grabbing groove is provided on the front side in the middle of the top surface of the center positioning bench.

[0016] The beneficial effects of the present invention compared with the prior art are as follows:

[0017] 1. By setting a straightening machine, a conveying mechanism, a hoop bending mechanism, and a blanking mechanism, the present invention realizes the integration of straightening, conveying, hoop bending, and blanking of single-head steel bars, with high automation, time-saving and labor-saving, and high working efficiency.

[0018] 2. The hoop bending mechanism of the present invention can move on the bracket by setting the mounting frame and the hoop bending platform, so that the hoop bending assembly can move, enabling the hoop bending assembly to move to different hoop bending positions for hoop bending. It has high flexibility, can be applied to different hoop bending requirements, and has good application scope and prospects.

[0019] 3. The hoop bending assembly of the present invention bends the steel bar by setting the first mandrel, the second mandrel, the third mandrel and the fourth mandrel, and uses the limit block on the first mandrel and the hoop bending head on the second mandrel to bend the steel bar. The limit block on the first mandrel is used to hold the steel bar, the hoop bending head on the second mandrel is used to bend the steel bar, and the fourth mandrel is used for transmission, so as to disperse the hoop bending load to multiple mandrels, reduce the influence of the hoop bending load on the hoop bending assembly, ensure the hoop bending effect, have strong hoop bending force, good hoop bending effect, high bearing capacity and high working efficiency.

[0020] 4. By setting the lifting assembly, the present invention can drive the hoop bending head and the limit block to lift, which can adapt to steel bars with different specifications and diameters. At the same time, for the hoop bending requirements with multi-side hoop bending positions, when moving the hoop bending head to different side hoop bending positions, it can prevent the hoop bending head from interfering with the movement of the steel bar, so as to directly move the hoop bending head to different side hoop bending positions, improve the hoop bending efficiency, eliminate the need for repeated adjustment, and achieve one-piece forming.

[0021] 5. The blanking mechanism of the present invention can position the steel bars bent into different shapes on both sides and in the center by setting the left positioning mechanism, the right positioning mechanism and the center positioning mechanism. At the same time, through the grabbing groove set on the blanking table frame, it is convenient for the manipulator to position and grab to the next process, further improving the automation degree, reducing manual operation, and saving time and effort. Brief Description of the Drawings

[0022] Figure 1 is the structural schematic diagram of the present invention;

[0023] Figure 2 is the structural schematic diagram of the hoop bending mechanism of the present invention;

[0024] Figure 3 is the connection structural schematic diagram of the bracket and the hoop bending platform of the present invention;

[0025] Figure 4 is the structural schematic diagram of the bracket of the present invention;

[0026] Figure 5 is the connection structural schematic diagram of the mounting frame and the hoop bending platform of the present invention;

[0027] Figure 6 is the structural schematic diagram of the hoop bending assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the connection structure of the bending hoop component and the driving component of the present invention;

[0029] Figure 8 It is a left-sectional view of the bending hoop component of the present invention;

[0030] Figure 9 It is a schematic diagram of the structure of the blanking mechanism of the present invention;

[0031] Figure 10 It is a schematic diagram of the structure of the blanking structure of the present invention from another perspective;

[0032] Figure 11 It is a schematic diagram of the structure of the left positioning component of the present invention;

[0033] Figure 12 It is a schematic diagram of the structure of the central positioning component of the present invention;

[0034] Figure 13 It is a schematic diagram of the structure of the central positioning component of the present invention from another perspective;

[0035] Figure 14 It is a schematic diagram of the bending hoop operation of the present invention;

[0036] In the drawings, 1 - straightening machine;

[0037] 2 - conveying mechanism;

[0038] 3 - bending hoop mechanism;

[0039] 31 - bracket; 311 - slide rail; 312 - rack;

[0040] 32 - mounting frame; 321 - moving motor; 322 - moving gear;

[0041] 33 - bending hoop platform; 331 - pulley;

[0042] 34 - bending hoop component; 341 - mounting table; 342 - connecting cylinder; 3421 - slotted opening; 343 - first core shaft; 344 - second core shaft; 345 - third core shaft; 346 - fourth core shaft; 347 - connecting plate; 348 - turntable; 349 - limiting block; 3410 - bending hoop head;

[0043] 35 - driving component; 351 - driving motor; 352 - driving gear; 353 - driven gear;

[0044] 36 - lifting component; 361 - first lifting cylinder; 362 - second cylinder mounting seat; 363 - second lifting cylinder; 364 - connecting piece;

[0045] 4 - clamping mechanism;

[0046] 5 - blanking mechanism; 51 - blanking bench

[0047] 52 - left positioning component; 521 - side positioning bench; 522 - connecting seat; 523 - side lifting cylinder; 524 - side mounting seat; 525 - side positioning cylinder; 526 - side positioning plate

[0048] 53 - right positioning component

[0049] 54 - center positioning component; 541 - center positioning bench; 542 - center positioning seat; 543 - lower mounting plate; 544 - upper mounting plate; 545 - guiding column; 546 - center lifting cylinder; 547 - third positioning cylinder; 548 - fourth positioning cylinder; 549 - first positioning block; 5410 - second positioning block

[0050] 55 - grasping groove Detailed implementation mode

[0051] In order to make the purpose, technical solution and advantages of the present invention clearer and more understandable, the following gives preferred embodiments with reference to the attached drawings and further elaborates on the present invention in detail. However, it should be noted that many details listed in the specification are only for enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be realized even without these specific details.

[0052] As Figure 1-13 shown, a single - head steel bar bending and hoop forming device includes a straightening machine 1, a conveying mechanism 2, a bending and hoop mechanism 3, a clamping mechanism 4, and a blanking mechanism 5. The straightening machine 1, the conveying mechanism 2, and the bending and hoop mechanism 3 are arranged horizontally in sequence; the clamping mechanism 4 is connected to the bending and hoop mechanism 3; the blanking mechanism 5 is arranged in front of the bending and hoop mechanism 3; the bending and hoop mechanism 3 includes a bracket 31, a mounting frame 32, a bending and hoop platform 33, and a bending and hoop component 34; the bracket 31 is horizontally arranged; the bending and hoop platform 33 is slidably connected to the bracket 31; the mounting frame 32 is fixedly connected to the bending and hoop platform 33; the bending and hoop component 34 is connected to the mounting frame 32. The power structures of the straightening machine 1, the conveying mechanism 2, the bending and hoop mechanism 3, the clamping mechanism 4, and the blanking mechanism 5 are all connected to the controller. The steel bar enters the straightening machine 1, is straightened and cut by the straightening machine 1, and then enters the conveying mechanism 2. The conveying mechanism 2 then conveys the steel bar into the bending and hoop mechanism 3. When the steel bar enters the bending and hoop mechanism 3 to a certain length, the clamping mechanism 4 continues to clamp and move the steel bar into the bending and hoop mechanism 3, so that the bending and hoop position of the steel bar can enter the bending and hoop component 34 and perform bending and hooping; after the bending and hooping is completed, the clamping mechanism 4 then puts the steel bar into the blanking mechanism 5 to complete the bending and hoop forming of the steel bar.

[0053] As Figure 3As shown, the bracket 31 is horizontally arranged left and right, with horizontal slide rails 311 provided on the front and rear sides of its top surface, and a rack 312 is provided on the upper side of the rear part inside the bracket 31.

[0054] As Figures 4-5 As shown, the mounting frame 32 is arranged inside the bracket 31, and a moving motor 321 is fixedly provided at the rear side inside it; the moving motor 321 is horizontally arranged front and back, and a moving gear 322 is vertically and fixedly sleeved on its output shaft; the moving gear 322 meshes with the rack 312; the bending hoop platform 33 is horizontally arranged, and its bottom surface is fixedly connected to the top surface of the mounting frame 32, and pulleys 331 corresponding to the slide rails 311 are provided on the front and rear sides of the bending hoop platform 33, and a through circular opening is provided on the left side of the top surface. When the moving motor 321 rotates, it drives the moving gear 322 to move on the slide rails 311, thereby driving the mounting frame 32 and the bending hoop platform 33 to move on the bracket 31, so that the bending hoop frame drives the bending hoop assembly 34 to move to the bending hoop position. If there are multiple bending hoop positions for the steel bar, the moving motor 321 can be used to drive the bending hoop platform 33 and the bending hoop assembly 34 to move to different bending hoop positions, and the multiple bending hoop positions of the steel bar can be bent one by one in sequence.

[0055] As Figures 6-7As shown in the figure, the hoop bending assembly 34 includes a mounting table 341, a connecting cylinder 342, a first core shaft 343, a second core shaft 344, a third core shaft 345, a fourth core shaft 346, a connecting plate 347, a turntable 348, a limiting block 349, and a hoop bending head 3410. The mounting table 341 is vertically arranged, and its rear end is fixedly connected to the inner rear side of the mounting frame 32. The connecting cylinder 342 is fixedly arranged vertically at the front end of the mounting table 341. The first core shaft 343, the second core shaft 344, the third core shaft 345, and the fourth core shaft 346 are vertically arranged, and the second core shaft 344, the third core shaft 345, and the fourth core shaft 346 are vertically penetrated inside. The upper part of the outer side wall of the fourth core shaft 346 is rotationally connected to the lower part of the inner wall of the connecting cylinder 342. In order to bear the rotational load, a tapered roller bearing connection can be used. The lower part extends downward out of the connecting cylinder 342 and is rotationally connected to the driving assembly 35. The lower end of the second core shaft 344 is spline-connected to the top end of the fourth core shaft 346, and the upper part is rotationally connected to the inner wall of the connecting cylinder 342. In order to bear the load on the hoop bending head 3410 during the hoop bending process, a cylindrical roller bearing connection is used. The top end extends upward out of the opening of the hoop bending platform 33. The first core shaft 343 is arranged inside the second core shaft 344 and the fourth core shaft 346 and is respectively rotationally connected to the second core shaft 344 and the fourth core shaft 346. In order to bear the rotational load, a tapered roller bearing connection is used. The top end of the first core shaft 343 extends upward out of the top surface of the second core shaft 344. The top end of the third core shaft 345 is spline-connected to the bottom end of the first core shaft 343, and the lower outer side wall is fixedly connected to the mounting frame 32 through the connecting plate 347. The turntable 348 is fixedly sleeved on the top end of the second core shaft 344, and its top surface is flush with the top surface of the first core shaft 343. The hoop bending head 3410 is arranged on the top surface of the turntable 348. The limiting blocks 349 are horizontally arranged on the left and right of the top surface of the first core shaft 343, and two are arranged at intervals in the front and back. After the steel bar enters the limiting blocks 349 at the top end of the first core shaft 343, the driving assembly 35 drives the fourth core shaft 346 to rotate, and the fourth core shaft 346 drives the second core shaft 344 to rotate, so that the hoop bending head 3410 rotates to bend the steel bar stuck in the limiting blocks 349.

[0056] As Figure 8 shown in the figure, the driving assembly 35 includes a driving motor 351, a driving gear 352, and a driven gear 353. The driving motor 351 is vertically arranged in the middle of the inner rear side of the mounting frame 32 and is located on the right side of the hoop bending assembly 34, and its output shaft faces upward. The driving gear 352 is fixedly sleeved on the output shaft of the driving motor 351. The driven gear 353 is fixedly sleeved on the outer side wall of the fourth core shaft 346 through a key connection and is connected to the driving gear 352 through a belt drive. The driving motor 351 drives the driving gear 352 to rotate, and the driving gear 352 drives the driven gear 353 to transmit, thereby driving the fourth core shaft 346 to rotate. By controlling the rotation angle of the driving motor 351, different hoop bending angles can be achieved.

[0057] As shown Figure 6 in the figure, a slot 3421 is formed in the front side wall of the connecting cylinder 342 corresponding to the second mandrel 344; a lifting assembly 36 is further included; the lifting assembly 36 includes a first lifting cylinder 361, a second cylinder mounting seat 362, a second lifting cylinder 363, and a connecting member 364; the first lifting cylinder 361 is vertically arranged and fixedly connected to the bottom end of the third mandrel 345, and the piston rod is fixedly connected to the bottom end of the first mandrel 343 upwards; the second cylinder mounting seat 362 is fixedly arranged on the connecting cylinder 342 and is respectively located on the upper and lower sides of the slot 3421; the second lifting cylinder 363 is vertically arranged between the second cylinder mounting seats 362; the connecting member 364 is horizontally arranged, one end of which is fixedly connected to the slide of the second lifting cylinder 363, and the other end passes through the slot 3421 and is fixedly connected to the second mandrel 344. The first lifting cylinder 361 drives the third mandrel 345 to lift and lower, the third mandrel 345 drives the first mandrel 343 to lift and lower, so as to lift and lower the limiting block 349, and the second lifting cylinder 363 drives the second mandrel 344 to lift and lower, so as to lift and lower the bending hoop head 3410. After the steel bar enters the bending hoop platform 33, the first lifting cylinder 361 and the second lifting cylinder 363 act together to drive the limiting block 349 and the bending hoop head 3410 to lift and lower, place the steel bar into the limiting block 349, and then bend the steel bar through the bending hoop head 3410. Due to different forming requirements, there are multiple different bending hoop positions on the steel bar, and bending hoops are required on both sides of the steel bar. Therefore, after bending the hoop on one side of the steel bar, start the second lifting cylinder 363 to drive the second mandrel 344 to descend, so that the bending hoop head 3410 descends, and then cooperate with the driving motor 351 to move the bending hoop head 3410 to the bending hoop position on the other side of the steel bar, so that the bending hoop head 3410 bends the hoop on the other side of the steel bar, preventing the bending hoop head 3410 from interfering with the steel bar.

[0058] As shown Figures 9-11As shown in the figure, the blanking mechanism 5 includes a blanking bench 51, a left positioning component 52, a right positioning component 53, and a center positioning component 54; the blanking bench 51 is horizontally arranged on the front side of the hoop bending mechanism 3; the left positioning component 52 includes a side positioning bench 521, a connecting seat 522, a side lifting cylinder 523, a side mounting seat 524, a side positioning cylinder 525, and a side positioning plate 526; the connecting seat 522 is vertically arranged, and its left end face is connected to the left side inside the blanking bench 51; the side lifting cylinder 523 is vertically and fixedly arranged on the right end face of the connecting seat 522; the left end face of the side mounting seat 524 is connected to the sliding table of the side lifting cylinder 523; the side positioning cylinder 525 is horizontally arranged on the top surface of the side mounting seat 524, and its sliding table faces to the right; the side positioning plate 526 is horizontally arranged front and back, and its left end face is fixedly connected to the right end of the sliding table; the side positioning bench 521 is horizontally arranged on the left side of the top surface of the blanking bench 51, and a vertically penetrating opening is provided on its top surface corresponding to the side positioning cylinder 525 and the positioning plate, and the opening area is larger than the areas of the side positioning cylinder 525 and the positioning plate, so that the side positioning plate 526 has enough stroke; the center positioning component 54 is arranged in the middle of the blanking bench 51; the right positioning component 53 is arranged on the right side of the blanking bench 51. After the steel bar is bent by the hoop bending mechanism 3, it is placed on the blanking mechanism 5 through the clamping mechanism 4 and placed on the left positioning component 52, the right positioning component 53, and the center positioning component 54. The side positioning cylinder 523 of the left positioning component 52 drives the side positioning cylinder 525 to rise, so that the side positioning cylinder 525 extends out of the opening of the side positioning bench 521, and then the side positioning cylinder 525 drives the side positioning plate 526 to move to the right, thereby positioning the formed steel bar on the left side.

[0059] As Figures 9-10 shown, the right positioning component 53 has the same structure as the left positioning component 52 and is symmetrically arranged on the right side of the top surface of the blanking bench 51. The right positioning component 53 positions the right side of the steel bar, and the left positioning component 52 and the right positioning component 53 jointly position the two sides of the steel bar.

[0060] As Figures 12-13As shown, the center positioning table 541, center positioning seat 542, lower mounting plate 543, upper mounting plate 544, guiding column 545, center lifting cylinder 546, third positioning cylinder 547, fourth positioning cylinder 548, first positioning block 549, and second positioning block 5410 are provided. The center positioning table 541 is horizontally arranged. The center positioning seat 542 is arranged at the rear side of the middle part at the rear side inside the blanking table frame 51. The lower mounting plate 543 is horizontally arranged on the top surface of the center positioning seat 542 from left to right. The guiding columns 545 are fixedly arranged vertically at the four corners of the upper mounting plate 544. The upper mounting plate 544 is movably sleeved on the guiding columns 545 and is located above the lower mounting plate 543. The center lifting cylinder 546 is arranged at the bottom surface of the lower mounting plate 543, and its piston rod passes through the top surface of the lower mounting plate 543 and is fixedly connected to the bottom surface of the upper mounting plate 544. Two third positioning cylinders 547 are respectively horizontally arranged on the left and right sides of the top surface of the upper mounting plate 544. The first positioning block 549 is of an L-shaped structure, its bottom is fixedly connected to the slider of the third positioning cylinder 547, and one end away from the center of the upper mounting plate 544 bends upward. The fourth positioning cylinder 548 is horizontally arranged from front to back. The second positioning block 5410 is of an L-shaped structure, its bottom is fixedly connected to the slider of the fourth positioning cylinder 548, and one end away from the center of the upper mounting plate 544 bends upward. The center positioning table 541 is horizontally arranged at the middle part of the top surface of the blanking table frame 51, and openings corresponding to the positions of the first positioning block 549 and the second positioning block 5410 are provided on its top surface, and the area of the openings is larger than the areas of the first positioning block 549 and the second positioning block 5410, so that the first positioning block 549 and the second positioning block 5410 have sufficient stroke. Starting the center lifting cylinder 546 drives the upper mounting plate 544 to move on the guiding columns 545, so that the third positioning cylinder 547 and the fourth positioning cylinder 548 rise out of the opening of the center positioning table 541, and then according to different shapes formed by the steel bars being bent into stirrups, starting the third positioning cylinder 547 and the fourth positioning cylinder 548 enables the first positioning block 549 and the second positioning block 5410 to perform center positioning on the steel bars. The center positioning assembly 54, left side positioning assembly 52, and right side positioning assembly 53 enable the manipulator to position the steel bar position and take out the steel bar.

[0061] As Figure 9 shown, a through grasping groove 55 is opened at the front side of the middle part of the top surface of the center positioning table 541. After positioning the steel bar, the clamping position of the steel bar is located on the grasping groove 55, and the manipulator can take out the steel bar through the grasping groove 55.

[0062] The working principle of the present invention is as follows:

[0063] Taking the bent stirrup horse hoof bar as an example, as Figure 14 shown.

[0064] The steel bars are first straightened by the straightening machine 1, cut into sections after entering a certain length, and enter the conveying mechanism 2. The conveying mechanism 2 then sends the steel bars into the bending platform 33 of the bending hoop mechanism 3 and into the two limit blocks 349 of the bending hoop assembly 34. Start the driving motor 351 of the driving assembly 35 to drive the fourth core shaft 346 to rotate. The fourth core shaft 346 drives the second core shaft 344 to rotate, causing the bending head 3410 to rotate, so that the bending head 3410 bends the bending position a. After the bending of the bending position a is completed, there is still a surplus in the length of the steel bar. The conveying mechanism 2 continues to convey the steel bar to the right. At the same time, start the second lifting cylinder 363 to drive the second core shaft 344 to descend, move the bending head 3410 through the driving motor 351, and at the same time drive the second core shaft 344 to rise through the second cylinder 363, so that the bending head 3410 rises to the bending position b and then bends the bending position b. Continue to bend the bending position c in this way. When the bending of the bending position c is completed, there is no surplus in the length of the steel bar, and the conveying mechanism 2 cannot continue to convey the steel bar. At this time, start the clamping mechanism 4. The clamping mechanism 4 clamps the part of the steel bar on the right side of the bending hoop assembly 34 and moves it to the right, moving the steel bar to the right until the bending head 3410 is located on the left side of the bending position d. Start the moving motor 321 to drive the bending platform 33 to move to the right, so that the bending head 3410 moves to the bending position d, and then bends the bending position d. After the bending of the bending position d is completed, continue to start the moving motor 321 and the second lifting cylinder 363, and continue to bend the bending positions e and f in the above manner to complete the forming of the steel bar bent into a horseshoe stirrup.

[0065] After the steel bar bending is completed, the steel bar is placed on the side positioning tables 521 of the left positioning component 52 and the right positioning component 53 of the blanking mechanism 5, and the center positioning table 541 of the center positioning component 54 through the clamping mechanism 4. The side lifting cylinders 523 of the left positioning component 52 and the right positioning component 53 drive the side positioning cylinders 525 to rise, so that the side positioning cylinders 525 extend out of the opening of the positioning table, and then drive the side positioning plates 526 to move towards the center of the blanking table frame 51 through the side positioning cylinders 525, thereby positioning the two sides of the steel bar. Then start the center lifting cylinder 546 to drive the upper mounting plate 544 to move on the guide posts 545, so that the third positioning cylinder 547 and the fourth positioning cylinder 548 rise out of the opening of the center positioning table 541. Then, according to the different shapes formed by the steel bar bending, start the third positioning cylinder 547 and the fourth positioning cylinder 548, so that the first positioning block 549 and the second positioning block 5410 position the center of the steel bar. Finally, the manipulator takes out the steel bar through the grasping groove 55.

[0066] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A single-head steel bar bending and hoop forming device, comprising a straightening machine, a conveying mechanism, a bending hoop mechanism, a clamping mechanism, and a feeding mechanism, characterized in that: The straightening machine, conveying mechanism, and bending hoop mechanism are arranged horizontally in sequence; the clamping mechanism is connected to the bending hoop mechanism; the unloading mechanism is arranged in front of the bending hoop mechanism; the bending hoop mechanism includes a bracket, a mounting frame, a bending hoop platform, and a bending hoop assembly; the bracket is arranged horizontally; the bending hoop platform is slidably connected to the bracket; the mounting frame is fixedly connected to the bending hoop platform; the bending hoop assembly is connected to the mounting frame; The bending hoop platform is horizontally arranged, and its bottom surface is fixedly connected to the top surface of the mounting frame, and pulleys slidably connected to the slide rails are provided on the front and rear sides of the bending hoop platform, and a through opening is opened on the left side of the top surface; the bending hoop assembly includes a mounting platform, a connecting tube, a first spindle, a second spindle, a third spindle, a fourth spindle, a connecting plate, a turntable, a limit block, and a bending hoop head, and the mounting platform is vertically arranged, and its rear end is fixedly connected to the inner rear side of the mounting frame; the connecting tube is fixedly and vertically arranged at the front end of the mounting platform; the first spindle, the second spindle, the third spindle, and the fourth spindle are vertically connected inside; the upper part of the outer wall of the fourth spindle is rotatably connected to the lower part of the inner wall of the connecting tube, and the lower part The connecting tube extends downward and is rotatably connected to the driving assembly; the lower end of the second spindle is spline-connected to the top end of the fourth spindle, the upper part is rotatably connected to the inner wall of the connecting tube, and the top end extends upwardly out of the opening of the bending hoop platform; the first spindle is arranged in the second spindle and the fourth spindle, and are rotatably connected to the second spindle and the fourth spindle respectively, and the top end of the first spindle extends upwardly out of the top surface of the second spindle; the top end of the third spindle is spline-connected to the bottom end of the first spindle, and the lower outer side wall is fixedly connected to the mounting frame through a connecting plate; the turntable fixing sleeve is arranged at the top end of the second spindle, and its top surface is flush with the top surface of the first spindle; the bending hoop head is arranged on the top surface of the turntable; the limit blocks are horizontally arranged on the top surface of the first spindle, and two are arranged at intervals in front and back; The unloading mechanism includes an unloading platform, a left positioning assembly, a right positioning assembly, and a center positioning assembly; the unloading platform is horizontally arranged in front of the bending hoop mechanism; the left positioning assembly includes a side positioning platform, a connecting seat, a side lifting cylinder, a side mounting seat, a side positioning cylinder, and a side positioning plate; the right positioning assembly is arranged on the right side of the unloading platform, and the right positioning assembly has the same structure as the left positioning assembly; the center positioning assembly is arranged in the middle of the unloading platform; The center positioning assembly includes a center positioning platform, a center positioning seat, a lower mounting plate, an upper mounting plate, a guide column, a center lifting cylinder, a third positioning cylinder, a fourth positioning cylinder, a first positioning block, and a second positioning block; the center positioning platform is horizontally arranged; the rear side of the center positioning seat is arranged at the rear side of the middle part of the unloading platform; the lower mounting plate is horizontally arranged on the top surface of the center positioning seat; the guide column is fixed and vertically arranged on the four corners of the upper mounting plate; the upper mounting plate is movably sleeved on the guide column and is located above the lower mounting plate; the center lifting cylinder is arranged on the bottom surface of the lower mounting plate, and its piston rod passes through the top surface of the lower mounting plate, and It is fixedly connected to the bottom surface of the upper mounting plate; there are two third positioning cylinders, which are horizontally arranged on the left and right sides of the top surface of the upper mounting plate; the first positioning block is an L-shaped structure, the bottom of which is fixedly connected to the slider of the third positioning cylinder, and the end away from the center direction of the upper mounting plate is bent upward; the fourth positioning cylinder is horizontally arranged front and back; the second positioning block is an L-shaped structure, the bottom of which is fixedly connected to the slider of the fourth positioning cylinder, and the end away from the center direction of the upper mounting plate is bent upward; the center positioning platform is horizontally arranged in the middle of the top surface of the unloading platform, and the top surface thereof is provided with openings corresponding to the positions of the first positioning block and the second positioning block.

2. A single-head steel bar bending hoop forming device according to claim 1, characterized in that: The bracket is horizontally arranged on the left and right sides, and horizontal slide rails are arranged on the front and rear sides of the top surface, and a rack is arranged on the upper side surface of the rear of the bracket.

3. A single-head steel bar bending hoop forming device according to claim 2, characterized in that: The mounting bracket is arranged inside the bracket, and a moving motor is arranged at the rear side of the middle part; the moving motor is arranged horizontally front and back, and a moving gear is arranged on the vertical fixed sleeve of the output shaft of the moving motor; the moving gear is meshed with the rack.

4. A single-head steel bar bending hoop forming device according to claim 3, characterized in that: The driving assembly includes a driving motor, a driving gear, and a driven gear. The driving motor is vertically arranged in the middle of the rear side of the mounting frame and is located on the right side of the bending hoop assembly, with its output shaft facing upward; the driving gear fixed sleeve is arranged on the output shaft of the driving motor; the driven gear fixed sleeve is arranged on the outer side wall of the fourth core shaft and is connected to the driving gear through a belt drive.

5. The single-head steel bar bending and hoop forming device according to claim 1, characterized in that: The connecting tube is provided with a slot on the front side wall corresponding to the second core shaft; it also includes a lifting assembly; the lifting assembly includes a first lifting cylinder, a second cylinder mounting seat, a second lifting cylinder, and a connecting piece; the first lifting cylinder is vertically arranged and fixedly connected to the bottom end of the third core shaft, and the piston rod is upwardly connected to the bottom end of the first core shaft; the second cylinder mounting seat is fixedly arranged on the connecting tube, and is respectively located on the upper and lower sides of the slot; the second lifting cylinder is vertically arranged between the second cylinder mounting seats; the connecting piece is horizontally arranged, one end of which is fixedly connected to the slide table of the second lifting cylinder, and the other end passes through the slot and is fixedly connected to the second core shaft.

6. The single-head steel bar bending and hoop forming device according to claim 1, characterized in that: The connecting seat is vertically arranged, and its left end face is connected to the left side of the unloading platform; the side lifting cylinder is vertically fixedly arranged on the right end face of the connecting seat; the left end face of the side mounting seat is connected to the slide of the side lifting cylinder; the side positioning cylinder is horizontally arranged on the top surface of the side mounting seat, and its slide faces to the right side; the side positioning plate is horizontally arranged front and back, and its left end face is fixedly connected to the right end of the slide; the side positioning platform is horizontally arranged on the left side of the top surface of the unloading platform, and its top surface corresponding to the side positioning cylinder and the positioning plate is provided with a vertical through opening.

7. The single-head steel bar bending and hoop forming device according to claim 1 is characterized in that: The right side positioning assembly and the left side positioning assembly are symmetrically arranged on the right side of the top surface of the unloading platform.

8. The single-head steel bar bending and hoop forming device according to claim 1, characterized in that: A through grabbing groove is provided on the front side of the middle part of the top surface of the center positioning platform.

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