A steel bar bending and forming machine and a bending and forming method

Abstract

The present invention relates to a steel bar bending and forming machine and a bending and forming method, which includes a steel bar clamping and bending device, a left steel bar profiling device and a right steel bar profiling device respectively arranged on both sides of the steel bar clamping and bending device, and also includes a steel bar clamping and rotating displacement device, a left four-axis bending device and a right four-axis bending device. The left steel bar profiling device and the right steel bar profiling device are arranged oppositely, the left four-axis bending device and the right four-axis bending device are arranged oppositely, the steel bar clamping and rotating displacement device is arranged on the steel bar clamping and bending device. The steel bar enters the left steel bar profiling device and the right steel bar profiling device to form the first bend, then enters the steel bar clamping and rotating mechanism to rotate the angle, and then enters the left four-axis bending device and the right four-axis bending device to form the second bend, and finally is subjected to folding and bending forming by the steel bar clamping and bending device. The present invention realizes the multiple bending and forming of longitudinal bars in the steel cage automatically, saves labor and improves work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic processing equipment for steel bar cages, and specifically to a steel bar bending and forming machine and a bending and forming method. Background Art

[0002] In the field of construction engineering, steel bars are widely used. When building a house, it is necessary to first build the steel bars into the form of a steel bar cage and then grout to form building structures such as walls. At present, the market demand for steel bar cage products is very large, and the forming is basically completed manually, with low work efficiency and high labor intensity. Therefore, an automatic equipment for steel bar cages is needed to solve these problems. This equipment is used for the purpose of bending and pressing the longitudinal bars on the automatic processing equipment for steel bar cages. Summary of the Invention

[0003] In view of the above problems, the present invention provides a steel bar bending and forming machine and a bending and forming method that can automatically realize steel bar bending and forming, save labor, and improve work efficiency.

[0004] The technical solution adopted by the present invention to solve the above technical problems is as follows: A steel bar bending and forming machine includes a steel bar clamping and bending device, a left steel bar pressing device and a right steel bar pressing device respectively arranged on both sides of the steel bar clamping and bending device, and also includes a steel bar clamping and rotating displacement device, a left four-axis bending device and a right four-axis bending device. The left steel bar pressing device and the right steel bar pressing device are arranged opposite to each other, the left four-axis bending device and the right four-axis bending device are arranged opposite to each other, and the left four-axis bending device and the right four-axis bending device are arranged on the opposite side of the left steel bar pressing device and the right steel bar pressing device. The steel bar clamping and rotating displacement device is arranged on the steel bar clamping and bending device. The steel bar enters the left steel bar pressing device and the right steel bar pressing device to form the first bend, then enters the steel bar clamping and rotating mechanism to rotate the angle, and then enters the left four-axis bending device and the right four-axis bending device to form the second bend, and finally is subjected to folding and bending forming by the steel bar clamping and bending device.

[0005] Preferably, the steel bar clamping and rotating displacement device includes a rotating component and a clamping component fixed on the first side mounting plate. An arc-shaped guide rail is provided on the first side mounting plate. The rotating component is pushed by a rotating push cylinder whose one end is connected to the first side mounting plate to slide along the arc-shaped guide rail, so as to drive the steel bar clamped by the clamping component to realize the angle change from two-dimensional to three-dimensional, and realize the bending in space.

[0006] Preferably, the rotating assembly includes a first vertical plate, a second vertical plate, and a third vertical plate arranged in sequence. The first vertical plate is connected to the other end of the rotating push cylinder, and the reverse side of the first vertical plate is slidably connected to the arc-shaped guide rail through a first arc-shaped guide wheel. At the upper and lower ends of the reverse side of the second vertical plate, upper and lower spring compensation devices are provided, and at the left and right sides of the reverse side of the second vertical plate, left and right spring compensation devices are provided. Horizontally arranged on the front surface of the second vertical plate is a first lifting cylinder mounting plate, and longitudinally arranged on both sides of the front surface of the second vertical plate are first upper and lower guide blocks. At the top of the first lifting cylinder mounting plate is a first lifting cylinder that drives the third vertical plate to slide on the upper and lower guide blocks. On the left and right sides of the reverse side of the third vertical plate are second sliders connected to the first upper and lower guide blocks. Horizontally arranged on the upper part of the front surface of the third vertical plate is a clamping cylinder mounting plate, and at the top of the clamping cylinder mounting plate is a clamping cylinder that drives the clamping assembly to clamp.

[0007] Preferably, the upper and lower spring compensation devices slide left and right on the left and right compensation guide blocks horizontally arranged on the front surface of the first vertical plate, and the left and right spring compensation devices slide up and down on the upper and lower compensation guide blocks longitudinally arranged on the front surface of the first vertical plate.

[0008] Preferably, the clamping assembly includes a clamping guide plate, a left clamping block, and a right clamping block. The reverse side of the clamping guide plate is slidably connected to the upper and lower clamping guide blocks on the front surface of the third vertical plate. The left clamping block and the right clamping block are respectively clamped and slide in the corresponding left clamping guide groove and right clamping guide groove of the clamping guide plate through clamping guide wheels. The left clamping guide groove and the right clamping guide groove are arranged in an inwardly tapered shape with a narrow upper part and a wide lower part, and the left clamping block and the right clamping block achieve left and right sliding through the clamping left and right guide blocks horizontally arranged on the third vertical plate.

[0009] Preferably, both the left four-axis bending device and the right four-axis bending device include a second side mounting plate and a second mounting base. It is characterized in that a z-axis guide rail is installed on one side of the second side mounting plate, one end of the z-axis guide rail is connected to the second mounting base, an x-axis guide rail is installed at the bottom end inside the second mounting base, and a y-axis guide rail and a return spring are arranged at the top of the x-axis guide rail through a connecting plate. The y-axis guide rail and the return spring are arranged relatively parallel. Inside the second mounting base and above the y-axis guide rail is installed a steel bar clamping and bending power head mechanism. One end of the return spring is connected to the connecting plate, and the other end of the return spring is connected to the steel bar clamping and bending power head mechanism. A rotating shaft is provided on the steel bar bending mechanism, and the rotating shaft drives the fixedly connected first rotor to bend the steel bar. The z-axis guide rail is driven by a second lifting cylinder, and the second lifting cylinder is installed on the top surface of the second side mounting plate, and the x-axis guide rail is driven by an electric cylinder.

[0010] Preferably, a first clamping plate is arranged inside the reinforcing bar clamping and bending power head mechanism. A first fixing plate is arranged on one side of the first clamping plate. A clamping oil cylinder is arranged at one end of the first clamping plate. One end of the rotating shaft on the reinforcing bar clamping and bending power head mechanism is fixedly connected to a first large gear. A first small gear meshes with one side of the first large gear. One end of the first small gear is connected to a first speed reducer. One end of the first speed reducer is connected to a first servo motor;

[0011] Preferably, two first limit position sensors are arranged on the top surface of the reinforcing bar clamping and bending power head mechanism. A first baffle plate for cooperating with the first limit position sensors is installed on the surface of the first rotor. A first detection induction piece is arranged on the surface of the first baffle plate. And the induction ends of the two first limit position sensors are arranged corresponding to the rotation position of the detection induction piece.

[0012] Preferably, the reinforcing bar clamping and bending device comprises a bending machine main body, a bending rotor assembly and a bending stator assembly. The bending machine main body is fixedly connected to the bending stator assembly through a lower support. And the bending rotor assembly is fixedly installed above the bending stator assembly through an upper support.

[0013] Preferably, the bending rotor assembly comprises an upper mounting plate and a lower mounting plate. The upper mounting plate and the lower mounting plate are fixedly connected to the upper support. And the upper mounting plate is fixedly installed above the lower mounting plate. A second servo motor and a second speed reducer are fixedly installed on the top surface of the upper mounting plate. And the output end of the second servo motor is connected to the input end of the second speed reducer. A second large gear and a second small gear are arranged between the upper mounting plate and the lower mounting plate. And the second large gear and the second small gear mesh with each other. The output shaft of the second speed reducer is fixedly connected to the center position on one side surface of the second small gear. A connecting shaft is fixedly installed at the center position on the other side surface of the second large gear. And the connecting shaft penetrates through the lower mounting plate and is rotationally connected to the lower mounting plate. And a second rotor is fixedly sleeved on the surface of the connecting shaft. A second detection induction piece is fixedly installed on one side surface of the second rotor. Two second limit position sensors are fixedly installed on the surface of the lower mounting plate. And the induction ends of the two second limit position sensors are arranged corresponding to the rotation position of the second detection induction piece;

[0014] Preferably, the bent stator assembly includes a third reduction gear, a third servo motor, a third large gear, a third small gear, a bearing plate, and a hydraulic clamping assembly. The bearing plate is fixedly connected to the lower bracket. The third large gear is connected to the hydraulic clamping assembly through a rotating shaft passing through the bearing plate. The third servo motor drives the third reduction gear to operate, thereby driving the third large gear and the third small gear to engage, realizing the rotation of the hydraulic clamping assembly. The hydraulic clamping assembly includes a mounting seat, and a mounting seat reinforcing rib is fixedly installed on the top surface of the mounting seat. A second fixing plate is fixedly welded to one side of the mounting seat, and a hydraulic cylinder is fixedly installed on one side of the second fixing plate. A T-shaped frame slidably connected to the mounting seat reinforcing rib is provided on the mounting seat. One end of the T-shaped frame is fixedly connected to a second clamping plate, and the other end of the piston rod of the hydraulic cylinder is fixedly connected to the surface of one side of the second clamping plate. A chuck is fixedly installed above the other side of the mounting seat. Two third limit sensors are provided on the bearing plate. A third baffle cooperating with the third limit sensors is provided on the hydraulic clamping assembly, and a third sensing piece is provided on the third baffle.

[0015] A bending and forming method using a steel bar bending and forming machine includes the following steps:

[0016] S1. After the steel bar enters the steel bar bending and forming machine, the left steel bar pressing device and the right steel bar pressing device press down simultaneously to form the first bend on both sides of the steel bar;

[0017] S2. The steel bar clamping and rotating displacement device acts, clamps the steel bar in S1 and rotates it to make the steel bar rotate a certain angle, realizing the angle change from two dimensions to three dimensions;

[0018] S3. The left four-axis bending device and the right four-axis bending device clamp the steel bar in S2 simultaneously. At this time, the steel bar clamping and rotating displacement device resets. The steel bar in S2 is pulled backward under the action of the left four-axis bending device and the right four-axis bending device and simultaneously undergoes the second bend. While the steel bar in S2 deforms, the bending stator assembly in the steel bar clamping and bending device rotates correspondingly through the third servo motor to prevent the steel bar from forming an undeformed straight section. Then, the steel bar clamping and bending power head mechanism of the right four-axis bending device descends to facilitate the bending of the right side of the steel bar;

[0019] S4. The bending rotor assembly of the steel bar clamping and bending device starts to act, cooperates with the hydraulic clamping assembly in the bending stator assembly to clamp the steel bar in S3, and all the steel bars on the right side rotate to the left side to be bent into the required longitudinal bars;

[0020] S5. After the steel bar is bent and formed, the steel bar bending power head mechanism of the left four-axis bending device descends to facilitate the automatic conveying of the steel bar to the next working station.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Through the combined use of a steel bar clamping and bending device, a left-side steel bar profiling device, a right-side steel bar profiling device, a steel bar clamping and rotating displacement device, a left-side four-axis bending device, and a right-side four-axis bending device, the present invention can automatically achieve multiple bendings and formations of longitudinal bars in a steel bar cage, meet construction requirements, save labor, improve work efficiency, and the bending and forming method is simple to operate and convenient for popularization and use.

[0023] 2. Through the movement of the clamping and rotating cylinder in the present invention to push the rotating component to slide on the arc-shaped guide rail, the two-dimensional to three-dimensional angle change of the steel bar clamped by the clamping component can be automatically achieved, thereby realizing the bending of the steel bar in space.

[0024] 3. In the present invention, both the left-side four-axis bending device and the right-side four-axis bending device are used in combination with a z-axis guide rail, an x-axis guide rail, a y-axis guide rail, a rotating shaft, a return spring, and a steel bar clamping and bending power head mechanism, which is convenient for realizing the second bending and forming of the longitudinal bars of the steel bar and meets the steel bar conveying requirements. During work, the entire device can be lifted through the z-axis guide rail to meet the steel bar conveying requirements. By sliding on the x-axis guide rail towards the side plate, the opening degree of the U-shaped steel bar can be adjusted to adapt to the thickness of various walls. Then, through the sliding of the bending power head mechanism on the y-axis guide rail, flexible length compensation can be carried out to adapt to the bending requirements with the total length of the steel bar remaining unchanged. And it can be automatically reset through the return spring, and then the first rotor is driven by the rotating shaft to bend the steel bar. The cooperation of the four axes can meet the special bending requirements of the steel bar. The clamping degree of the steel bar can be improved through the clamping plate, thereby improving the bending accuracy of the steel bar. Ensure that when finally docking two steel bar cages made of two identical U-shaped bent steel bars, the misalignment formed by the U-shaped steel bars enables the two steel bar cages to fit and stack up, and the tail of one steel bar cage can be smoothly inserted into the head of the other steel bar cage, and when inserted together, it can ensure left-right alignment.

[0025] 5. In the present invention, the bending stator assembly is kept rotating correspondingly by the third servo motor to prevent the formation of an undeformed straight bar section during the second bending and forming of the steel bar, and the bending stator assembly can cooperate with the bending rotor assembly to rotate all the steel bars on the right side to the left side for bending into the required longitudinal bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall structural schematic diagram of the present invention;

[0027] Figure 2 is the front view of the present invention;

[0028] Figure 3 is the structural schematic diagram of the steel bar profiling device in the present invention;

[0029] Figure 4 is the front view of the steel bar profiling device in the present invention;

[0030] Figure 5 is a schematic structural diagram of the steel bar clamping and rotating displacement device in the present invention;

[0031] Figure 6 is a front view of the steel bar clamping and rotating displacement device in the present invention;

[0032] Figure 7 is a left view of the steel bar clamping and rotating displacement device in the present invention;

[0033] Figure 8 is a schematic structural diagram of the four-axis bending device in the present invention;

[0034] Figure 9 is a front view of the four-axis bending device in the present invention;

[0035] Figure 10 is Figure 8 an enlarged schematic view of part A in

[0036] Figure 11 is a schematic structural diagram of the steel bar clamping and bending device in the present invention;

[0037] Figure 12 is a schematic structural diagram of the bending rotor assembly in the present invention;

[0038] Figure 13 is a schematic structural diagram of the bending rotor assembly from another angle in the present invention;

[0039] Figure 14 is a schematic structural diagram of the bending stator assembly in the present invention. Specific embodiments

[0040] Next, the present invention will be described in detail in conjunction with Figures 1-14 to explain the present invention in detail. Here, the schematic embodiments of the present invention and the descriptions are used to explain the present invention, but do not limit the present invention.

[0041] A steel bar bending and forming machine includes a steel bar clamping and bending device 6, a left steel bar profiling device 1 and a right steel bar profiling device 2 respectively arranged on both sides of the steel bar clamping and bending device. It also includes a steel bar clamping and rotating displacement device 3, a left four-axis bending device 4 and a right four-axis bending device 5. The left steel bar profiling device and the right steel bar profiling device are arranged oppositely, the left four-axis bending device and the right four-axis bending device are arranged oppositely, and the left four-axis bending device and the right four-axis bending device are arranged on the opposite side of the left steel bar profiling device and the right steel bar profiling device. The steel bar clamping and rotating displacement device is arranged on the steel bar clamping and bending device. The left steel bar profiling device, the right steel bar profiling device, the left four-axis bending device and the right four-axis bending device can all move on a moving base 7, so as to adjust the position where the steel bar needs to be bent. The steel bar enters the left steel bar profiling device and the right steel bar profiling device to form the first bend, then enters the steel bar clamping and rotating mechanism to rotate the angle, then enters the left four-axis bending device and the right four-axis bending device to form the second bend, and finally is subjected to folding and bending by the steel bar clamping and bending device to form a shape;

[0042] Both the left steel bar profiling device and the right steel bar profiling device include a first mounting base 101 and a first support seat arranged on the first mounting base. The first support seat includes a profiling oil cylinder mounting plate 106 parallel to the top of the first mounting base. Both sides of the profiling oil cylinder mounting plate are fixed to the top of the first mounting base through side plates 104. The bottom of the profiling oil cylinder mounting plate is provided with a first profiling block 105 and a second profiling block 110. The top of the first mounting base is provided with a first profiling base 102 and a second profiling base 112 corresponding to the positions of the first profiling block and the second profiling block respectively. The top of the profiling oil cylinder mounting plate is provided with a first profiling oil cylinder 107 for driving the first profiling block to lift and a second profiling oil cylinder 108 for driving the second profiling block to lift. A second support seat 114 and a steel bar support seat in the same horizontal direction as the second profiling block are arranged on the side plate close to the second profiling block. The top of the second support seat is provided with a clamping oil cylinder 109. The output shaft of the clamping oil cylinder passes through the second support base and is fixedly connected to a clamping block 111. The clamping block can be used to clamp the steel bar on the steel bar support seat. During operation, the clamping oil cylinder drives the clamping block to press down to press the steel bar on the steel bar support seat to prevent the steel bar from rising. The second profiling oil cylinder drives the second profiling block to press down to bend the steel bar along the second profiling base and finally make it consistent with the inclined plane angle of the second profiling base. The first profiling oil cylinder drives the first profiling block to press down to make the front section of the steel bar change along with the shape change of the first profiling base, completing the first bend of the steel bar.

[0043] The steel bar clamping and rotating displacement device includes a rotating component and a clamping component fixed on the first side mounting plate 301. An arc-shaped guide rail 308 is provided on the first side mounting plate. The rotating component is pushed by a rotating push cylinder 305 whose one end is connected to the first side mounting plate to slide along the arc-shaped guide rail, thereby driving the steel bar clamped by the clamping component to achieve an angular change from two-dimensional to three-dimensional, realizing bending in space.

[0044] The rotating component includes a first vertical plate 302, a second vertical plate 303, and a third vertical plate 304 arranged in sequence. The first vertical plate is connected to the other end of the rotating push cylinder, and the reverse side of the first vertical plate is slidably connected to the arc-shaped guide rail through a first arc-shaped guide wheel. Upper and lower spring compensation devices are provided at both the upper and lower ends of the reverse side of the second vertical plate, and left and right spring compensation devices are provided on both the left and right sides of the reverse side of the second vertical plate. A first lifting cylinder mounting plate 328 is horizontally provided at the upper part of the front side of the second vertical plate, and first up and down guide blocks 327 are longitudinally provided on both sides of the front side of the second vertical plate. A first lifting cylinder 306 for driving the third vertical plate to slide on the up and down guide blocks is provided at the top of the first lifting cylinder mounting plate. Second sliders connected to the first up and down guide blocks are provided on both the left and right sides of the reverse side of the third vertical plate. A clamping cylinder mounting plate 329 is provided at the upper part of the front side of the third vertical plate, and a clamping cylinder 330 for driving the clamping component to clamp is provided at the top of the clamping cylinder mounting plate.

[0045] The upper and lower spring compensation devices slide left and right on the left and right compensation guide blocks 317 horizontally arranged on the front side of the first vertical plate, and the left and right spring compensation devices slide up and down on the up and down compensation guide blocks 318 vertically arranged on the front side of the first vertical plate.

[0046] The clamping component includes a clamping guide plate 320, a left clamping block 321, and a right clamping block 322. The reverse side of the clamping guide plate is slidably connected to the clamping up and down guide blocks 319 on the front side of the third vertical plate. The left clamping block and the right clamping block are respectively clamped and slide in the corresponding left clamping guide groove 323 and right clamping guide groove 324 of the clamping guide plate through clamping guide wheels 325. The left clamping guide groove and the right clamping guide groove are arranged in an inner eight-shaped pattern with a narrow upper part and a wide lower part, and the left clamping block and the right clamping block achieve left and right sliding through the clamping left and right guide blocks 326 horizontally arranged on the third vertical plate.

[0047] After the steel bar is bent for the first time, the first lifting cylinder descends, driving the clamping assembly on the third vertical plate to slide down along the first up-and-down guide block on the second vertical plate. The left clamping block and the right clamping block drive the clamping guide plate to descend during the descending movement of the clamping cylinder, thereby driving the left clamping block and the right clamping block to move relatively away from each other on the clamping left and right guide blocks, realizing the placement of the steel bar. Then, through the upward sliding of the clamping guide plate along the clamping up-and-down guide block, the left and right clamping guide wheels are driven to slide upward along the left clamping guide groove and the right clamping guide groove, thereby driving the left clamping block on the left side and the right clamping block on the right side to move relatively close to clamp the steel bar. Then, the rotation pushing cylinder acts to make the rotating assembly rotate along the arc-shaped guide rail and stops when it reaches the set angle, so as to rotate the bent steel bar by an angle, realizing the bending in space. The left and right spring compensation devices and the up-and-down spring compensation devices are used to realize the left and right automatic compensation and up-and-down automatic compensation of the tension during the rotation of the clamping assembly, so that the clamped steel bar always rotates along the center of the circle during the circumferential rotation. Finally, the formed steel bar is released by the rising of the first lifting cylinder and the descending of the clamping cylinder, and the rotation pushing cylinder drives the rotating assembly to reset.

[0048] Both the left four-axis bending device and the right four-axis bending device include a second side mounting plate 401 and a second mounting base 419. It is characterized in that a z-axis guide rail 402 is installed on one side of the second side mounting plate, one end of the z-axis guide rail is connected to the second mounting base, an x-axis guide rail 406 is installed at the bottom end inside the second mounting base, a y-axis guide rail 407 and a return spring 408 are arranged at the top of the x-axis guide rail through a connecting plate, the y-axis guide rail and the return spring are arranged relatively parallel, a steel bar clamping and bending power head mechanism 405 is installed above the y-axis guide rail inside the second mounting base, one end of the return spring is connected to the connecting plate, the other end of the return spring is connected to the steel bar clamping and bending power head mechanism, a rotating shaft 415 is provided on the steel bar bending mechanism, and the rotating shaft drives the fixedly connected first rotor 416 to bend the steel bar. The z-axis guide rail is driven by a second lifting cylinder 409, and the second lifting cylinder is installed on the top surface of the second side mounting plate. The x-axis guide rail is driven by an electric cylinder 410;

[0049] Inside the steel bar clamping and bending power head mechanism, a first clamping plate 404 is provided. One side of the first clamping plate is provided with a first fixing plate. One end of the first clamping plate is provided with a clamping oil cylinder 403. One end of the rotating shaft on the steel bar clamping and bending power head mechanism is fixedly connected to a first large gear 412. One side of the first large gear is engaged with a first small gear. One end of the first small gear is connected to a first reduction gear, and one end of the first reduction gear is connected to a first servo motor 413;

[0050] On the top surface of the reinforcing bar clamping and bending power head mechanism, there are two first limit position sensors 418. On the surface of the first rotor, there is a first baffle plate used in cooperation with the first limit position sensors. On the surface of the first baffle plate, there is a first detection induction piece 417, and the sensing ends of the two first limit position sensors are arranged corresponding to the rotation position of the detection induction piece;

[0051] During operation, start the clamping oil cylinder, and then the clamping oil cylinder drives the first clamping plate inside the reinforcing bar clamping and bending power head mechanism to clamp and fix the reinforcing bar. The electric cylinder drives the movement in the direction of the side mounting plate along the x-axis guide rail to realize the opening of the U-shaped reinforcing bar. The opening of the U-shaped depends on the thickness of the wall. The thicker the wall, the larger the U-shaped opening. The opening range of the U-shaped is between 200 - 400 mm. While moving in the x-axis guide rail direction, the reinforcing bar clamping and bending power head device moves in the y-direction along the y-axis guide rail under the action of an external force to perform a flexible length compensation, which can ensure that the total length of the reinforcing bar remains unchanged during bending. The sliding distance of the reinforcing bar clamping and bending power head device on the y-axis guide rail depends on the sliding distance of the whole device on the x-axis guide rail. Then it automatically resets through the return spring. After adjusting the U-shaped opening of the reinforcing bar, under the action of the first servo motor, the first rotor is driven by the rotating shaft to bend the reinforcing bar, realizing the second bending forming of the longitudinal bars of the reinforcing bar. Finally, after the reinforcing bar is bent, the bending device is lowered by the second lifting cylinder driving the sliding along the z-axis guide rail, facilitating the conveying of the reinforcing bar to a working station.

[0052] The reinforcing bar clamping and bending device includes a bending machine main body 601, a bending rotor assembly 603, and a bending stator assembly 605. The bending machine main body is fixedly connected with the bending stator assembly through a lower support 604, and the bending rotor assembly is fixedly installed above the bending stator assembly through an upper support 602.

[0053] The bent rotor assembly includes an upper mounting plate 614 and a lower mounting plate 621. The upper mounting plate and the lower mounting plate are fixedly connected to the upper bracket. The upper mounting plate is fixedly installed above the lower mounting plate. A second servo motor 616 and a second reducer 620 are fixedly installed on the top surface of the upper mounting plate. The output end of the second servo motor is connected to the input end of the second reducer. A second large gear 617 and a second small gear 619 are arranged between the upper mounting plate and the lower mounting plate, and the second large gear and the second small gear are meshed. The output shaft of the second reducer is fixedly connected to the center position of one side surface of the second small gear. A connecting shaft 624 is fixedly installed at the center position of the other side surface of the second large gear. The connecting shaft passes through the lower mounting plate and is rotatably connected to the lower mounting plate. A second rotor 623 is fixedly sleeved on the surface of the connecting shaft. A second detection and induction piece 625 is fixedly installed on one side surface of the second rotor. Two second limit limit sensors 615 are fixedly installed on the surface of the lower mounting plate, and the induction ends of the two second limit limit sensors are arranged corresponding to the rotation position of the second detection and induction piece;

[0054] The bent stator assembly includes a third reducer 630, a third servo motor 631, a third large gear 632, a third small gear, a bearing plate 606 and a hydraulic clamping assembly. The bearing plate is fixedly connected to the lower bracket. The third large gear is connected to the hydraulic clamping assembly through a rotating shaft passing through the bearing plate. The third servo motor drives the third reducer to operate, thereby driving the third large gear and the third small gear to perform a meshing motion to realize the rotation of the hydraulic clamping assembly. The hydraulic clamping assembly includes a mounting seat 613, and a mounting seat reinforcing rib 612 is fixedly installed on the top surface of the mounting seat. A second fixing plate 608 is fixedly welded to one side of the mounting seat, and a hydraulic cylinder 607 is fixedly installed on one side of the second fixing plate. A T-shaped frame 609 slidably connected to the mounting seat reinforcing rib is arranged on the mounting seat. One end of the T-shaped frame is fixedly connected to a second clamping plate 610, and one side surface of the second clamping plate is fixedly connected to the other end of the piston rod of the hydraulic cylinder. A chuck 611 is fixedly installed above the other side of the mounting seat. Two third limit limit sensors 626 are arranged on the bearing plate. A third baffle plate cooperating with the third limit limit sensor is arranged on the hydraulic clamping assembly. A third induction piece 627 is arranged on the third baffle plate;

[0055] While the steel bar undergoes the second bending deformation, the bending stator assembly maintains corresponding rotation through the third servo motor. The rotation angle is restricted by the cooperation of the third limit position sensor and the third induction piece, which can prevent the steel bar from forming a straight section without deformation. Then, the steel bar clamping and bending power head mechanism of the right four-axis bending device descends, and the hydraulic cylinder in the bending stator assembly pushes the T-shaped frame to move on the reinforcing rib of the mounting seat, thereby pushing the second clamping plate to clamp the steel bar between the second clamping plate and the chuck. Subsequently, the second servo motor of the bending rotor assembly starts, drives the second pinion to rotate through the second reducer, and then drives the second large gear to rotate. After amplifying the torque, it drives the connecting shaft to rotate. The rotation of the connecting shaft drives the second rotor to rotate, and the second rotor rotates to bend the clamped steel bar, so that all the steel bars on the right side are rotated to the left side and bent into the required longitudinal bars. At the same time, during the bending process, as the second rotor rotates, the second detection induction piece rotates and is limited in position by the two second limit position sensors to avoid over-bending and complete the positioning of the second rotor. When resetting, the second rotor rotates in the reverse direction, driving the second detection induction piece to rotate in the reverse direction in the two second limit position sensors to avoid over-resetting and complete the reset of the second rotor.

[0056] During the implementation process, after the steel bar enters the steel bar bending and forming machine, the left steel bar profiling device and the right steel bar profiling device press down simultaneously to form the first bending on both sides of the steel bar. Then, the steel bar clamping and rotating displacement device acts to clamp the steel bar and rotate it by a certain angle to achieve the angle change from two-dimensional to three-dimensional. Then, the left four-axis bending device and the right four-axis bending device clamp the steel bar simultaneously. At this time, the steel bar clamping and rotating displacement device resets. The steel bar is pulled backward under the action of the left four-axis bending device and the right four-axis bending device and undergoes the second bending simultaneously. While the steel bar deforms, the bending stator assembly in the steel bar clamping and bending device maintains corresponding rotation through the third servo motor to prevent the steel bar from forming a straight section without deformation. After that, the steel bar clamping and bending power head mechanism of the right four-axis bending device descends to facilitate the bending of the right side of the steel bar. Finally, the bending rotor assembly of the steel bar clamping and bending device starts to act, and cooperates with the hydraulic clamping assembly in the bending stator assembly to clamp the steel bar. All the steel bars on the right side are rotated to the left side and bent into the required longitudinal bars. After all the longitudinal bars of the steel bar are bent and formed, the steel bar bending power head mechanism of the left four-axis bending device descends to facilitate the automatic conveying of the steel bar to the next working station.

[0057] The technical solutions provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to helping understand the principles of the embodiments of the present invention; at the same time, for those of ordinary skill in the art, according to the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A steel bar bending and forming machine, characterized in that: it includes a steel bar clamping and bending device (6), a left steel bar profiling device (1) and a right steel bar profiling device (2) respectively arranged on both sides of the steel bar clamping and bending device, and also includes a steel bar clamping and rotating displacement device (3), a left four-axis bending device (4) and a right four-axis bending device (5). The left steel bar profiling device and the right steel bar profiling device are arranged oppositely, the left four-axis bending device and the right four-axis bending device are arranged oppositely, and the left four-axis bending device and the right four-axis bending device are arranged on the opposite side of the left steel bar profiling device and the right steel bar profiling device. The steel bar clamping and rotating displacement device is arranged on the steel bar clamping and bending device. The steel bar enters the left steel bar profiling device and the right steel bar profiling device to form the first bend, then enters the steel bar clamping and rotating displacement device to rotate the angle, and then enters the left four-axis bending device and the right four-axis bending device to form the second bend, and finally is subjected to folding and bending forming by the steel bar clamping and bending device; Both the left steel bar profiling device and the right steel bar profiling device include a first mounting base (101) and a first support seat arranged on the first mounting base. The first support seat includes a profiling oil cylinder mounting plate (106) parallel to the top of the first mounting base. Both sides of the profiling oil cylinder mounting plate are fixed to the top of the first mounting base through side plates (104). The bottom of the profiling oil cylinder mounting plate is provided with a first profiling block (105) and a second profiling block (110). The top of the first mounting base is provided with a first profiling base (102) and a second profiling base (112) corresponding to the positions of the first profiling block and the second profiling block respectively. The top of the profiling oil cylinder mounting plate is provided with a first profiling oil cylinder (107) for driving the first profiling block to lift and a second profiling oil cylinder (108) for driving the second profiling block to lift. A second support seat (114) and a steel bar support seat in the same horizontal direction as the second profiling block are arranged on the side plate close to the second profiling block. The top of the second support seat is provided with a clamping oil cylinder (109). The output shaft of the clamping oil cylinder passes through the second support base and is fixedly connected to a clamping block (111). The clamping block can be used to clamp the steel bar on the steel bar support seat; The steel bar clamping and rotating displacement device includes a rotating component and a clamping component fixed on a first side mounting plate (301). An arc-shaped guide rail (308) is arranged on the first side mounting plate. The rotating component is pushed by a rotating push cylinder (305) with one end connected to the first side mounting plate to slide along the arc-shaped guide rail, so as to drive the steel bar clamped by the clamping component to realize the angle change from two-dimensional to three-dimensional, and realize the bending in space. Both the left four-axis bending device and the right four-axis bending device include a second side mounting plate (401) and a second mounting base (419). One side of the second side mounting plate is provided with a z-axis guide rail (402), one end of the z-axis guide rail is connected to the second mounting base, the bottom end inside the second mounting base is provided with an x-axis guide rail (406), the top of the x-axis guide rail is provided with a y-axis guide rail (407) and a return spring (408) through a connecting plate. The y-axis guide rail and the return spring are arranged parallel to each other. Inside the second mounting base and above the y-axis guide rail, a reinforcing bar clamping and bending power head mechanism (405) is installed. One end of the return spring is connected to the connecting plate, and the other end of the return spring is connected to the reinforcing bar clamping and bending power head mechanism. A rotating shaft (415) is provided on the reinforcing bar clamping and bending power head mechanism, and the rotating shaft drives the fixedly connected first rotor (416) to bend the reinforcing bar. The z-axis guide rail is driven by a second lifting cylinder (409), and the second lifting cylinder is installed on the top surface of the second side mounting plate. The x-axis guide rail is driven by an electric cylinder (410). The reinforcing bar clamping and bending device includes a bending machine main body (601), a bending rotor assembly (603) and a bending stator assembly (605). The bending machine main body is fixedly connected to the bending stator assembly through a lower bracket (604), and the bending rotor assembly is fixedly installed above the bending stator assembly through an upper bracket (602).

2. The reinforcing bar bending and forming machine according to claim 1, characterized in that: The rotating assembly includes a first vertical plate (302), a second vertical plate (303) and a third vertical plate (304) arranged in sequence. The first vertical plate is connected to the other end of the rotating push cylinder, and the reverse side of the first vertical plate is slidably connected to the arc guide rail through a first arc guide wheel. Upper and lower spring compensation devices are provided at both the upper and lower ends of the reverse side of the second vertical plate, and left and right spring compensation devices are provided on both the left and right sides of the reverse side of the second vertical plate. A first lifting cylinder mounting plate (328) is horizontally provided at the upper part of the front side of the second vertical plate, and first upper and lower guide blocks (327) are longitudinally provided on both sides of the front side of the second vertical plate. A first lifting cylinder (306) for driving the third vertical plate to slide on the upper and lower guide blocks is provided at the top of the first lifting cylinder mounting plate. Second sliders connected to the first upper and lower guide blocks are provided on both the left and right sides of the reverse side of the third vertical plate. A clamping cylinder mounting plate (329) is provided at the upper part of the front side of the third vertical plate, and a clamping cylinder (330) for driving the clamping assembly to clamp is provided at the top of the clamping cylinder mounting plate; The upper and lower spring compensation devices slide left and right on the left and right compensation guide blocks (317) horizontally provided on the front side of the first vertical plate, and the left and right spring compensation devices slide up and down on the up and down compensation guide blocks (318) longitudinally provided on the front side of the first vertical plate.

3. The reinforcing bar bending and forming machine according to claim 1, characterized in that: The clamping assembly includes a clamping guide plate (320), a left clamping block (321), and a right clamping block (322). The reverse side of the clamping guide plate is slidably connected to the clamping up-and-down guide blocks (319) on the front surface of the third vertical plate. The left clamping block and the right clamping block are respectively engaged and slid in the corresponding left clamping guide groove (323) and right clamping guide groove (324) of the clamping guide plate through clamping guide wheels (325). The left clamping guide groove and the right clamping guide groove are arranged in an inner eight-shaped pattern with a narrow upper part and a wide lower part. The left clamping block and the right clamping block achieve left and right sliding through the clamping left-and-right guide blocks (326) horizontally arranged on the third vertical plate.

4. The steel bar bending and forming machine according to claim 1, characterized in that: a first clamping plate (404) is arranged inside the steel bar clamping and bending power head mechanism. A first fixing plate is arranged on one side of the first clamping plate. A clamping oil cylinder (403) is arranged at one end of the first clamping plate. One end of the rotating shaft on the steel bar clamping and bending power head mechanism is fixedly connected to a first large gear (412). A first small gear is engaged on one side of the first large gear. One end of the first small gear is connected to a first speed reducer. One end of the first speed reducer is connected to a first servo motor (413); two first limit position sensors (418) are arranged on the top surface of the steel bar clamping and bending power head mechanism. A first baffle plate for cooperating with the first limit position sensors is installed on the surface of the first rotor. A first detection induction piece (417) is arranged on the surface of the first baffle plate. The sensing ends of the two first limit position sensors are respectively arranged corresponding to the rotation position of the first detection induction piece.

5. The steel bar bending and forming machine according to claim 1, characterized in that: the bending rotor assembly includes an upper mounting plate (614) and a lower mounting plate (621). The upper mounting plate and the lower mounting plate are fixedly connected to the upper bracket. The upper mounting plate is fixedly installed above the lower mounting plate. A second servo motor (616) and a second speed reducer (620) are fixedly installed on the top surface of the upper mounting plate. The output end of the second servo motor is connected to the input end of the second speed reducer. A second large gear (617) and a second small gear (619) are arranged between the upper mounting plate and the lower mounting plate. The second large gear and the second small gear are engaged. The output shaft of the second speed reducer is fixedly connected to the center position on one side surface of the second small gear. A connecting shaft (624) is fixedly installed at the center position on the other side surface of the second large gear. The connecting shaft penetrates through the lower mounting plate and is rotatably connected to the lower mounting plate. A second rotor (623) is fixedly sleeved on the surface of the connecting shaft. A second detection induction piece (625) is fixedly installed on one side surface of the second rotor. Two second limit position sensors (615) are fixedly installed on the surface of the lower mounting plate. The sensing ends of the two second limit position sensors are respectively arranged corresponding to the rotation position of the second detection induction piece; The bent stator assembly includes a third reduction gear (630), a third servo motor (631), a third large gear (632), a third small gear, a bearing plate (606) and a hydraulic clamping assembly. The bearing plate is fixedly connected to the lower bracket. The third large gear is connected to the hydraulic clamping assembly through a rotating shaft passing through the bearing plate. The third servo motor drives the third reduction gear to operate, thereby driving the third large gear and the third small gear to engage, realizing the rotation of the hydraulic clamping assembly. The hydraulic clamping assembly includes a mounting seat (613), and a mounting seat reinforcing rib (612) is fixedly installed on the top surface of the mounting seat. A second fixed plate (608) is fixedly welded to one side of the mounting seat, and a hydraulic cylinder (607) is fixedly installed on one side of the second fixed plate. A T-shaped frame (609) slidably connected to the mounting seat reinforcing rib is provided on the mounting seat. One end of the T-shaped frame is fixedly connected to a second clamping plate (610), and the other end of the piston rod of the hydraulic cylinder is fixedly connected to the surface of one side of the second clamping plate. A chuck (611) is fixedly installed above the other side of the mounting seat. Two third limit position sensors (626) are provided on the bearing plate. A third baffle plate cooperating with the third limit position sensor is provided on the hydraulic clamping assembly. A third induction piece (627) is provided on the third baffle plate.

6. A bending and forming method of a steel bar bending and forming machine according to any one of claims 1-5, characterized in that: it includes the following steps: S1. After the steel bar enters the steel bar bending and forming machine, when the left steel bar pressing device and the right steel bar pressing device press down simultaneously, a first bend is formed on both sides of the steel bar; S2. The steel bar clamping and rotating displacement device acts, clamps the steel bar in S1 and rotates it to make the steel bar rotate a certain angle, realizing the angle change from two dimensions to three dimensions; S3. The left four-axis bending device and the right four-axis bending device clamp the steel bar in S2 at the same time. At this time, the steel bar clamping and rotating displacement device resets. The steel bar in S2 is pulled backward under the action of the left four-axis bending device and the right four-axis bending device and at the same time a second bend is performed. While the steel bar in S2 deforms, the bent stator assembly in the steel bar clamping and bending device keeps corresponding rotation through the third servo motor to prevent the steel bar from forming an undeformed straight section. Then, the steel bar clamping and bending power head mechanism of the right four-axis bending device descends to facilitate the bending of the right side of the steel bar; S4. The bent rotor assembly of the steel bar clamping and bending device starts to act, cooperates with the hydraulic clamping assembly in the bent stator assembly to clamp the steel bar in S3, and all the steel bars on the right side rotate to the left side to be formed into the required longitudinal bars; S5. After the steel bar is bent and formed, the steel bar clamping and bending power head mechanism of the left four-axis bending device descends to facilitate the automatic feeding of the steel bar to the next working station.

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