High-precision intelligent steel bar hoop bending system

Abstract

The invention discloses a high-precision intelligent reinforcing steel bar hoop bending system which comprises a rack, hoop bending devices and a control system, and the multiple hoop bending devices are installed on the rack and electrically connected with the control system; the hoop bending device comprises a hoop bending table, a supporting module, an electromagnetic quick heating module, a hoop bending module and a driving module, the hoop bending table is assembled on the rack in a sliding mode, the hoop bending module comprises a hollow shaft horizontally and rotationally installed on the hoop bending table, and the hollow shaft is in transmission connection with the driving module; the front end of the hollow shaft is fixedly sleeved with an elbow disc, and the supporting modules are arranged on the hoop bending table on the left side and the right side of the elbow disc. The problems that equipment is heavy, energy consumption is high and precision control is difficult due to the fact that the requirement for cold bending force of existing thick steel bars is huge can be effectively solved, and the problems that preheating efficiency is low and control is extensive before existing steel bars are bent can also be effectively solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of steel bar processing, and particularly relates to a high-precision intelligent steel bar hoop bending system. BACKGROUND

[0002] The steel bar hoop bending system is an automatic or semi-automatic mechanical equipment for processing straight steel bars into specific shapes (such as right angles, rectangles, polygons and special-shaped hoop bars), and utilizes a machine head installed on a rack to perform bending actions on the steel bars of a fixed size.

[0003] The existing steel bar hoop bending system mainly includes two types: one type is a system that relies on a high-power hydraulic or servo motor to perform pure mechanical cold bending, and in order to overcome the high yield strength of the thick steel bar at room temperature, a driving unit with a large output torque and a reinforced rack and die matched therewith are forced to be used, which leads to inherent defects such as large size, heavy weight, high manufacturing cost and high energy consumption of the entire equipment, and the bending of high-strength steel bars is prone to cause rebound precision control problems and surface micro-cracks; the other type is a pre-heating process such as flame heating or overall furnace heating introduced to reduce the bending force, and such a method not only has a generalized heating area, poor temperature uniformity and low energy utilization efficiency, but also seriously slows down the production rhythm, and cannot be accurately integrated with the automatic hoop bending process, cannot realize precise regulation and control of the local mechanical properties of the steel bar, and may change the overall material properties of the steel bar due to overheating, and is difficult to integrate into an automatic continuous production line; in summary, the existing technology generally lacks a control means that can intelligently cooperate between efficient energy application and precise bending actions in time and space, resulting in a long-term prominent contradiction between equipment heaviness and process inefficiency in the field of thick steel bar processing. SUMMARY

[0004] In view of the defects and problems of the existing steel bar hoop bending system, the application provides a high-precision intelligent steel bar hoop bending system, which can not only effectively solve the problems of high energy demand of existing thick steel bar cold bending, heavy equipment, high energy consumption and difficult precision control, but also effectively solve the problems of low pre-heating efficiency and extensive control before existing steel bar bending.

[0005] The technical problem is solved by the following technical scheme: a high-precision intelligent steel bar hoop bending system, comprising a rack, a hoop bending device and a control system, a plurality of hoop bending devices are installed on the rack and are electrically connected with the control system; the hoop bending device comprises a hoop bending table, a support module, an electromagnetic rapid heating module, a hoop bending module and a driving module, the hoop bending table is slidingly assembled on the rack, the hoop bending module comprises a hollow shaft which is horizontally rotatably installed on the hoop bending table, and the hollow shaft is in transmission connection with the driving module; a bend disc is fixedly sleeved on the front end of the hollow shaft, and the support module is arranged on the hoop bending table on the left and right sides of the bend disc; a bend shaft is slidingly installed on the eccentric portion of the bend disc in the axial direction, and an elastic push assembly is arranged on the bend shaft, which will push the bend shaft out of the bend disc in a natural state; a mandrel is slidingly installed in the hollow shaft in the axial direction, and a push assembly is connected to the tail end of the mandrel, and the control system drives the front end of the hollow shaft to extend out of the bend disc in cooperation with the bend shaft through the push assembly; the electromagnetic rapid heating module comprises a base, a linear driving assembly and an open-close electromagnetic heating mechanism, the base is slidingly installed on the hoop bending table on the front side of the hoop bending module and is in transmission connection with the linear driving assembly, and the open-close electromagnetic heating mechanism is installed on the base; the control system can drive the base to move and push the bend shaft to retract through the linear driving assembly, so that the open-close electromagnetic heating mechanism is sleeved on the outside of the steel bar, and the mandrel will retract synchronously with the bend shaft; the control system is electrically connected with the open-close electromagnetic heating mechanism, and is used for controlling the closing and opening of the open-close electromagnetic heating mechanism, and also controlling the start and stop of the electromagnetic heating mechanism.

[0006] A device box is fixedly installed on the hoop bending table, the hollow shaft is horizontally rotatably installed in the device box and is in transmission connection with the driving module, and the front end of the hollow shaft extends out of the device box.

[0007] The driving module comprises a bending motor and a transmission assembly, the bending motor is fixedly installed on the outer wall of the device box and is electrically connected with the control system, and the hollow shaft in the device box is in transmission connection with the bending motor through the transmission assembly.

[0008] The push assembly comprises a telescopic cylinder which is coaxially arranged on the rear side of the hollow shaft, the telescopic cylinder is electrically connected with the control system, the telescopic end of the telescopic cylinder is forwardly arranged and extends into the hollow shaft and is fixedly connected with the mandrel.

[0009] The support module comprises support wheels which are symmetrically arranged on the hoop bending tables on the left and right sides of the bend disc and are rotatably installed on the hoop bending tables, and are used for horizontally supporting the steel bar.

[0010] The elbow disc below the hollow shaft is provided with an axial telescopic hole. An outer sleeve that connects with and communicates with the telescopic hole is fixedly installed on the rear end face of the elbow disc. The tail end of the outer sleeve is sealed. The elbow shaft is installed in the outer sleeve to prevent detachment and sliding along the axial direction. The elastic element is matched and installed in the outer sleeve on the rear side of the elbow shaft. In its natural state, the elastic element will push the front end of the elbow shaft forward and extend it through the telescopic hole out of the elbow disc.

[0011] The opening and closing electromagnetic heating mechanism includes a heating base, an opening and closing electromagnetic induction heating component, a linkage component, and a drive component. The heating base is fixedly installed on the base. The opening and closing electromagnetic induction heating component includes two semi-annular heating elements symmetrically arranged from top to bottom. The ends of the two semi-annular heating elements away from the bending hoop module are fixed with a rotating shaft. The rotating shaft is rotatably installed on the heating base, and the rotating shafts of the two semi-annular heating elements are engaged together through the linkage component. The drive component is connected to either semi-annular heating element. The control system can drive the annular heating element connected to it to rotate around its rotating shaft through the drive component. The semi-annular heating element that is driven to rotate actively will drive the other semi-annular heating element to rotate synchronously in the opposite direction around its rotating shaft through the linkage component.

[0012] The linkage component includes synchronous gears fixedly mounted on the ends of the rotating shafts on the same side of the two semi-annular heating elements, and the two synchronous gears mesh with each other.

[0013] The drive assembly includes a closed motor electrically connected to the control system. The closed motor is fixedly mounted on the heating seat of the openable electromagnetic induction heating assembly away from the bending module, and the closed motor meshes with the rotating shaft of the lower semi-annular heating element.

[0014] The beneficial effects of the present invention: The high-precision intelligent rebar bending system provided by the present invention has the following beneficial effects: 1. The high-precision intelligent rebar bending system provided by this invention, by instantaneously and precisely heating the bending section of the rebar to an austenitic state, causes its yield strength to drop sharply, forming a local "softening hinge," which can effectively reduce the driving torque required for bending. This allows for a significant reduction in the specifications and strength requirements of the drive module 6, bending platform 2, and frame. It achieves miniaturization and lightweighting of key mechanical components and the overall equipment, significantly reducing material costs, manufacturing costs, and floor space, and solving the long-standing problem of "bulky and clumsy" rebar processing equipment.

[0015] 2. The high-precision intelligent steel bar bending system provided by this invention utilizes the high-frequency electromagnetic induction heating of the openable electromagnetic heating mechanism 43 to concentrate energy highly on the target bending section, resulting in extremely high thermal efficiency and extremely short heating time. Compared with overall furnace heating, flame heating, or high-power hydraulic systems configured to overcome huge cold bending resistance, it can effectively reduce energy consumption. At the same time, the "heating-bending" cycle is short, and each process is intelligently connected by the control system, with no waiting time. The overall processing efficiency is substantially improved compared with traditional heavy equipment or step-by-step hot bending processes.

[0016] 3. The high-precision intelligent steel bar bending system provided by this invention has excellent metal plasticity at high temperatures, a smooth bending process, and minimal springback, achieving high-precision angle control. At the same time, uniform austenitizing heating avoids surface micro-cracks and internal stress concentration that are easily generated by cold bending, resulting in a uniform microstructure in the bending area.

[0017] 4. The high-precision intelligent steel bar bending system provided by this invention allows the bending module 5 to operate under low stress, significantly reducing wear, fatigue, and impact loads. The unique linkage retraction structure avoids rigid collisions between the heating module and the bending module 5, protecting precision components and effectively reducing equipment failure rate and operation and maintenance costs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the bending hoop device of the present invention.

[0020] Figure 3 This is a schematic diagram of the bending hoop module structure of the present invention.

[0021] Figure 4 This is a schematic diagram of the installation of the elbow shaft of the present invention.

[0022] Figure 5 This is a schematic diagram of the driver module structure of the present invention.

[0023] Figure 6 This is a schematic diagram of the opening and closing electromagnetic heating mechanism of the present invention.

[0024] The diagram labels are as follows: 1 is the frame, 2 is the bending platform, 3 is the support module, 4 is the electromagnetic rapid heating module, 41 is the base, 42 is the linear drive assembly, 421 is the cylinder, 43 is the opening and closing electromagnetic heating mechanism, 431 is the heating seat, 432 is the opening and closing electromagnetic induction heating assembly, 4321 is the semi-circular heating element, 4322 is the rotating shaft, 433 is the linkage assembly, 4331 is the synchronous gear, 434 is the closed motor, 44 is the guide rail, and 45 is the... 5 is the slider, 5 is the bending hoop module, 51 is the hollow shaft, 52 is the device box, 521 is the platform plate, 53 is the bearing, 54 is the elbow plate, 55 is the elbow shaft, 551 is the anti-detachment block, 56 is the mandrel, 57 is the pushing assembly, 58 is the outer sleeve, 581 is the strip anti-detachment groove, 59 is the weak spring, 6 is the drive module, 61 is the bending motor, 62 is the turbine, 63 is the worm gear, 64 is the driving gear, 65 is the driven gear, and 7 is the reinforcing bar. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Example 1: This example provides a high-precision intelligent rebar bending system for bending large-diameter rebars (low, medium carbon steel, and low alloy steel rebars), such as... Figures 1-6 As shown, it includes a frame 1, a bending device and a control system. The frame 1 is an existing steel bar bending machine structure, usually made of high-rigidity profiles welded or bolted together, and is equipped with linear guide rails for sliding with the bending device.

[0027] Multiple bending devices are slidably mounted side-by-side along the length of the frame. Each device is electrically connected to the control system and can be independently controlled to achieve continuous bending of the reinforcing bars at different locations, thus processing complex stirrup shapes. The control system integrates an industrial computer (IPC), a programmable logic controller (PLC), servo drives, and a human-machine interface (HMI). It is electrically connected to all bending devices and oversees the entire processing flow.

[0028] The bending device includes a bending platform 2, a support module 3, an electromagnetic rapid heating module 4, a bending module 5, and a drive module 6. The bending platform 2 is matched and assembled on the frame and cooperates with the linear guide rail on the frame 1, so that it can slide along the linear guide rail. The bending platform 2 is equipped with a locking component to lock the bending platform 2 to the frame and fix the position of the bending platform 2.

[0029] The bending module 5 includes a hollow shaft 51 horizontally rotatably mounted on the bending platform 2. The hollow shaft 51 is connected to the drive module 6. The control system can drive the hollow shaft 51 to rotate at a certain angle according to preset parameters through the drive module 6. Specifically, a device box 52 is fixedly mounted on the bending platform 2 by bolts. The device box 52 has symmetrical shaft holes at both ends. The two ends of the hollow shaft 51 are rotatably mounted in the two shaft holes by bearings 53, and the front end of the hollow shaft 51 extends forward out of the device box 52 and is fixedly mounted on the elbow plate 54 by bolts. The shaft hole inside the hollow shaft 51 passes forward through the elbow plate 54. The drive module 6 includes a bending motor 61 and a transmission assembly. The bending motor 61 is a servo motor with a built-in angle encoder. The transmission assembly includes a worm gear 62 and a worm 63. 2. A hollow shaft 51 is fixedly mounted inside the device box. A worm gear 63 is rotatably mounted on the device box above the ratchet, and the worm gear 63 meshes with the worm 62. One end of the worm gear 63 extends outward from the device box and is connected to the bending motor 61. There are various ways to connect the bending motor 61 and the worm gear 63. For example, the outer wall of the device box 52 below the worm gear 63 is provided with a platform plate 521. The bending motor 61 is fixedly mounted on the platform plate 521 and is electrically connected to the control system. A drive gear 64 is matched and mounted on the motor shaft 4322 of the bending motor 61. A driven gear 65 is matched and mounted on the end of the worm gear 63 extending out of the device box 52, and the driven gear meshes with the drive gear. The control system can drive the hollow shaft 51 to rotate at a predetermined angle according to preset parameters through the bending motor 61.

[0030] Furthermore, an angle encoder is also installed on the hollow shaft 51 inside the device box. The encoder on the servo motor and the angle encoder in the device box 52 synchronously detect the rotation angle of the hollow shaft 51 and feed the real-time data back to the control system. The control system compares the preset angle with the actual angle fed back by the dual encoders and calculates the deviation value. If there is a deviation, the control system sends a correction pulse to the servo motor to drive the hollow shaft 51 to rotate slightly to compensate for the deviation. When the actual angle matches the preset angle perfectly, the control system immediately sends a stop command and the servo motor brakes to avoid angle overshoot.

[0031] Support module 3 is installed on the bending platform 2 on both sides of the elbow plate 54 to horizontally support the reinforcing bars, such as Figure 2 As shown, the support module 3 includes support wheels symmetrically arranged on the bending platform 2 on the left and right sides of the elbow plate 54. The support wheels are rotatably mounted on the bending platform 2, and the support is provided with an annular groove for positioning the reinforcing bars.

[0032] An elbow shaft 55 is axially slidably installed at the eccentric part of the elbow disc 54. An elastic element is provided on the elbow shaft 55. In its natural state, the elastic element will push the elbow shaft 55 forward to extend out of the elbow disc 54. A mandrel 56 is axially slidably installed inside the hollow shaft 51. A pusher assembly 57 is connected to the tail end of the mandrel 56. The control system drives the front end of the hollow shaft 51 to extend out of the elbow disc 54 through the pusher assembly to cooperate with the elbow shaft 55 to bend the steel bar. In the unused state, the elbow shaft 55 is located directly below the mandrel 56.

[0033] Specifically: such as Figure 3 and Figure 4 As shown, the elbow disc 54 below the hollow shaft 51 has a telescopic hole along the axial direction of the hollow shaft. The rear end face of the elbow disc 54 is fixedly installed with an outer sleeve 58 that connects to the telescopic hole. The tail end of the outer sleeve 58 is sealed. The outer ring wall of the outer sleeve 58 has a strip-shaped anti-detachment groove 581 that connects to the interior along the axial direction. The elbow shaft 55 is slidably installed in the outer sleeve 58 along the axial direction, and the tail end of the elbow shaft 55 is provided with an anti-detachment block 551 that matches and is inserted into the anti-detachment groove. The elastic element is matched and installed in the outer sleeve 58 on the rear side of the elbow shaft 55. In its natural state, the elastic element will push the elbow shaft 55 forward to extend out of the elbow disc 54. In this embodiment, the elastic element is a weak spring 59. The elastic pushing force of the weak spring is greater than the resistance of the axial sliding of the elbow shaft 55.

[0034] The push assembly includes a telescopic cylinder coaxially disposed on the rear side of the hollow shaft 51. The telescopic cylinder is fixedly installed on the rear side wall of the device box by bolts and flanges. The telescopic end of the telescopic cylinder is positioned facing forward and extends into the hollow shaft 51 and is fixedly connected to the spindle 56. In this embodiment, the telescopic cylinder is a pneumatic cylinder. The telescopic cylinder is connected to the control system and is used to actively control the extension and retraction of the spindle 56.

[0035] The electromagnetic rapid heating module 4 includes a base 41, a linear drive assembly 42, and an openable electromagnetic heating mechanism 43. The base 41 is slidably mounted on the bending platform 2 on the front side of the bending module 5 and is connected to the linear drive assembly 42. Specifically, two parallel guide rails 44 are provided on the bending platform 2 on the front side of the bending module 5. Two sliders 45 that match the guide rails are mounted on the bottom surface of the base 41. The two sliders are respectively matched and installed in the corresponding guide rails. The linear drive assembly 42 includes a cylinder 421 fixedly mounted on the bending platform 2 below the base 41. The telescopic end of the cylinder 421 is set towards the bending module 5 and is fixedly connected to the bottom of the base 41. The control system is connected to the cylinder control and is used to control the extension and retraction of the cylinder, thereby driving the base 41 to slide. The control system can drive the base to move closer to or away from the bending module 5 through the cylinder.

[0036] The opening and closing electromagnetic heating mechanism 43 is mounted on the base 41. The control system is electrically connected to the opening and closing electromagnetic heating mechanism 43 and is used to control the opening and closing of the opening and closing electromagnetic heating mechanism 43, as well as the start and stop of the electromagnetic heating mechanism. Specifically, the opening and closing electromagnetic heating mechanism 43 includes a heating base 431, an opening and closing electromagnetic induction heating component 432, a linkage component 433, and a drive component. The heating base 431 is fixedly mounted on the base 41. The opening and closing electromagnetic induction heating component 432 includes two semi-annular heating elements 4321 symmetrically arranged from top to bottom. A rotating shaft 4322 is fixed to the end of the two semi-annular heating elements 4321 away from the bending hoop module 5. The rotating shaft 4322 rotates... The two half-ring heating elements 4321 are mounted on the heating base 431. The rotating shafts 4322 of the two half-ring heating elements 4321 are engaged together by the linkage component 433. When either half-ring heating element 4321 is driven to rotate around the rotating shaft 4322, the actively rotating half-ring heating element 4321 will drive the other half-ring heating element 4321 to rotate synchronously in the opposite direction around its rotating shaft 4322 through the linkage component 433. The drive component is connected to either half-ring heating element 4321. The control system can drive the ring heating element connected to it to rotate around its rotating shaft 4322 through the drive component, thereby controlling the opening and closing of the openable electromagnetic induction heating component 432.

[0037] In this embodiment, the linkage component 433 includes a synchronous gear 4331 fixedly mounted on the end of the rotating shaft 4322 on the same side of the two half-annular heating elements 4321. The two synchronous gears 4331 mesh with each other, so that when any half-annular heating element 4321 rotates around its rotating shaft 4322, the rotating shaft 4322 that rotates actively will drive the rotating shaft 4322 of the other half-annular heating element 4321 through the meshing two synchronous gears 4331, driving the other half-annular heating element 4321 to rotate synchronously in the opposite direction.

[0038] In this embodiment, the driving component includes a closed motor 434 connected to the control system. The closed motor 434 is fixedly installed on the heating seat 431 on the side of the openable electromagnetic induction heating component 432 away from the bending module 5. The closed motor 434 meshes with the rotating shaft 4322 of the lower semi-annular heating element 4321. The openable electromagnetic induction heating component 432 is in the normally open state before use. When the control system drives the two semi-annular heating elements 4321 to rotate towards each other and close to form a complete annular electromagnetic heating structure through the driving component, its inner diameter is slightly larger than the outer diameter of the steel bar to be processed, and it can tightly wrap around the outside of the section of the steel bar to be bent. The openable electromagnetic heating mechanism 43 has a built-in temperature sensor, which can collect the heating temperature in real time and feed it back to the control system to realize closed-loop temperature control.

[0039] The control system, through the linear drive component 42, can drive the base 41 to move and push the elbow shaft 55 back, so that the opening and closing electromagnetic heating mechanism 43 is sleeved on the outside of the reinforcing bar 7. The spindle 56 will retract synchronously with the elbow shaft 55, and will also retract synchronously with the elbow shaft 55 when the elbow shaft 55 returns to its original position and extends. There are various ways for the spindle 56 to retract and extend with the elbow shaft 55. For example, in this embodiment, when the control system drives the base 41 to move and push the elbow shaft 55 back through the linear drive component 42, the control system will synchronously control... The telescopic cylinder drives the mandrel 56 to retract synchronously to avoid the opening and closing electromagnetic induction heating component 432, allowing the steel bar to pass through the opening of the opening and closing electromagnetic induction heating component 432 in the open state, and the opening and closing electromagnetic induction heating component 432 to be sleeved on the outside of the steel bar; conversely, when the base 41 is reset, the elastic force of the weak spring will push the elbow shaft 55 to extend out of the elbow plate 54. During this process, the control system will also control the pushing component to drive the mandrel 56 to extend out of the elbow plate 54 synchronously, returning to the bending hoop preparation position.

[0040] When the opening and closing electromagnetic induction heating component 432 of the opening and closing electromagnetic heating mechanism 43 is sleeved on the outside of the steel bar, the control system controls the opening and closing electromagnetic induction heating component 432 of the opening and closing electromagnetic heating mechanism 43 to close and start the opening and closing electromagnetic induction heating component 432 of the opening and closing electromagnetic heating mechanism 43, so as to realize precise and rapid electromagnetic heating of the steel bar.

[0041] In use, the reinforcing bar is placed on the support module 3 of the bending device, with the section to be bent positioned between the bending shaft 55 and the mandrel 56. The control system controls the electromagnetic rapid heating module 4, the bending module 5, and the drive module 6 to perform the bending operation. First, the control system controls the base 41 of the electromagnetic rapid heating module 4 to move closer to the bending module 5. During the movement of the base 41, it pushes the front end of the bending shaft 55, causing the bending shaft 55 to overcome the elastic force of the compression spring and retract into the outer sleeve 58. At the same time, the control system controls the electric push rod to retract, driving the mandrel 56 to retract synchronously into the hollow shaft 51, avoiding the opening and closing electromagnetic heating mechanism 43. When the base 41 moves to the preset position (the reinforcing bar enters the opening and closing electromagnetic induction heating component 432), the opening and closing electromagnetic induction heating component 432 is fitted onto the outside of the reinforcing bar. The control system controls the opening and closing electromagnetic induction heating component 432 of the opening and closing electromagnetic heating mechanism 43 to close, and starts the opening and closing electromagnetic heating mechanism 43. The magnetic induction heating component 432 rapidly heats the section of the steel bar to be bent using the principle of electromagnetic induction. A temperature sensor provides real-time temperature feedback. When the temperature reaches the preset level, heating the steel bar above its austenitizing temperature, the control system controls the opening and closing electromagnetic heating mechanism 43 to stop heating. Then, it controls the electromagnetic rapid heating module 4 to reset. During the reset process, the spring force of the weak spring pushes the bending shaft 55 out of the bending disc 54. Simultaneously, the control system also controls the pushing component to drive the mandrel 56 to extend synchronously out of the bending disc 54, returning to the bending preparation position. Finally, the control system controls the drive module 6 to drive the hollow shaft 51 to rotate at a preset angle. The bending shaft 55 pushes the section of the steel bar to be bent around the mandrel 56. Because the section of the steel bar to be bent forms a highly locally ductile "softening hinge" after heating, the drive module 6 only needs to output a small driving force to complete the bending action at the predetermined angle. After bending, the hollow shaft 51 resets, completing one bending operation.

[0042] This embodiment provides a high-precision intelligent rebar bending system that uses an electromagnetic rapid heating module 4 to instantly and precisely heat the target bending section of the rebar, causing it to austenitize and form a local softening zone. This significantly reduces the driving torque required for bending, allowing for the miniaturization and weight reduction of the drive module 6, transmission components, and overall frame, directly lowering manufacturing costs and space requirements. The high-frequency induction heating energy is highly concentrated, and combined with a working mode that starts and stops only momentarily before bending, it achieves ultra-low energy consumption. Furthermore, thanks to the increased material plasticity brought about by heating, the springback during bending is minimal, the angle control precision is high, and surface micro-cracks that may occur during cold bending are avoided, ensuring the uniformity and reliability of processing quality. At the same time, the mechanical components operate under low-stress conditions, significantly reducing wear and fatigue losses, extending the equipment's service life, and lowering maintenance costs.

[0043] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the present invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision intelligent rebar bending system, comprising a frame, a bending device, and a control system, characterized in that, Multiple bending devices are mounted on the frame, all electrically connected to the control system. Each bending device includes a bending platform, a support module, an electromagnetic rapid heating module, a bending module, and a drive module. The bending platform is slidably mounted on the frame. Each bending module includes a hollow shaft horizontally rotatably mounted on the bending platform, and the hollow shaft is connected to the drive module. A bend plate is fixedly fitted to the front end of the hollow shaft, and the support module is located on the bending platforms on both sides of the bend plate. An bend shaft is axially slidably mounted at the eccentric part of the bend plate, and an elastic pusher assembly is provided on the bend shaft. In its natural state, the elastic pusher assembly pushes the bend shaft forward, extending it out of the bend plate. A mandrel is axially slidably mounted inside the hollow shaft, and a pusher assembly is connected to the tail end of the mandrel. The component and control system drive the hollow shaft to extend the elbow plate through the pushing component to cooperate with the elbow shaft; the electromagnetic rapid heating module includes a base, a linear drive component, and an opening and closing electromagnetic heating mechanism. The base is slidably installed on the elbow platform on the front side of the elbow module and is connected to the linear drive component. The opening and closing electromagnetic heating mechanism is installed on the base. The control system can drive the base to move and push the elbow shaft back through the linear drive component, so that the opening and closing electromagnetic heating mechanism is sleeved on the outside of the steel bar, and the mandrel will retract synchronously with the retraction of the elbow shaft; the control system is electrically connected to the opening and closing electromagnetic heating mechanism to control the opening and closing of the opening and closing electromagnetic heating mechanism, and also to control the start and stop of the electromagnetic heating mechanism.

2. The high-precision intelligent rebar bending and hoop system according to claim 1, characterized in that, A device box is fixedly installed on the bending platform. The hollow shaft is horizontally rotatably installed inside the device box and is connected to the drive module for transmission. The front end of the hollow shaft extends forward out of the device box.

3. The high-precision intelligent rebar bending and hoop system according to claim 2, characterized in that, The drive module includes a bending motor and a transmission assembly. The bending motor is fixedly installed on the outer wall of the device box and electrically connected to the control system. The hollow shaft inside the device box is connected to the bending motor through the transmission assembly.

4. The high-precision intelligent rebar bending and hoop system according to claim 1, characterized in that, The pushing assembly includes a telescopic cylinder coaxially positioned on the rear side of a hollow shaft. The telescopic cylinder is electrically connected to the control system. The telescopic end of the telescopic cylinder faces forward and extends into the hollow shaft, where it is fixedly connected to the spindle.

5. The high-precision intelligent rebar bending and hoop system according to claim 1, characterized in that, The support module includes support wheels symmetrically arranged on the bending platforms on the left and right sides of the elbow disc. The support wheels are rotatably mounted on the bending platforms and are used to horizontally support the reinforcing bars.

6. The high-precision intelligent rebar bending and hoop system according to claim 1, characterized in that, The elbow disc below the hollow shaft is provided with an axial telescopic hole. An outer sleeve that connects with and communicates with the telescopic hole is fixedly installed on the rear end face of the elbow disc. The tail end of the outer sleeve is sealed. The elbow shaft is installed in the outer sleeve to prevent detachment and sliding along the axial direction. The elastic element is matched and installed in the outer sleeve on the rear side of the elbow shaft. In its natural state, the elastic element will push the front end of the elbow shaft forward and extend it through the telescopic hole out of the elbow disc.

7. The high-precision intelligent rebar bending and hoop system according to claim 1, characterized in that, The opening and closing electromagnetic heating mechanism includes a heating base, an opening and closing electromagnetic induction heating component, a linkage component, and a drive component. The heating base is fixedly installed on the base. The opening and closing electromagnetic induction heating component includes two semi-annular heating elements symmetrically arranged from top to bottom. The ends of the two semi-annular heating elements away from the bending hoop module are fixed with a rotating shaft. The rotating shaft is rotatably installed on the heating base, and the rotating shafts of the two semi-annular heating elements are engaged together through the linkage component. The drive component is connected to either semi-annular heating element. The control system can drive the annular heating element connected to it to rotate around its rotating shaft through the drive component. The semi-annular heating element that is driven to rotate actively will drive the other semi-annular heating element to rotate synchronously in the opposite direction around its rotating shaft through the linkage component.

8. The high-precision intelligent rebar bending and hoop system according to claim 7, characterized in that, The linkage component includes synchronous gears fixedly mounted on the ends of the rotating shafts on the same side of the two semi-annular heating elements, and the two synchronous gears mesh with each other.

9. The high-precision intelligent rebar bending and hoop system according to claim 7, characterized in that, The drive assembly includes a closed motor electrically connected to the control system. The closed motor is fixedly mounted on the heating seat of the openable electromagnetic induction heating assembly away from the bending module, and the closed motor meshes with the rotating shaft of the lower semi-annular heating element.

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