Automatic reinforcement cage welding device

Abstract

The application relates to the field of steel bar welding, and particularly discloses an automatic steel bar cage welding device which comprises a rack, a welding execution unit and at least two supporting units arranged at intervals along the length direction of the rack. Each supporting unit comprises two telescopic columns and a rotary clamping mechanism supported by the two telescopic columns. The core of the rotary clamping mechanism is a disc body and an inner wheel rotatable in the disc body. A plurality of hydraulic sleeve rods independently radially telescopic are arranged in the circumferential direction of the inner wheel, and the ends of the hydraulic sleeve rods are provided with chuck heads to clamp the main bars. By controlling the telescopic amount of the hydraulic sleeve rods, the main bars clamped can form a preset special-shaped cross-section profile in space. At least one supporting unit is a movable unit which can move along the guide rail of the rack to adapt to different lengths. The utility model realizes flexible and automatic forming and welding of the special-shaped steel bar cage, and solves the technical problems of poor adaptability of the traditional equipment depending on a mold.

Description

Technical Field

[0001] This utility model relates to the field of steel bar welding, and specifically to an automatic steel bar cage welding device. Background Technology

[0002] In the construction of bridge pile foundations, building foundations, and other engineering projects, the steel reinforcement cage serves as the core load-bearing framework, and its processing quality is of paramount importance. Currently, automated steel reinforcement cage welding equipment, also known as roll welding machines, has gradually replaced traditional manual binding. These machines use a rotating disc to drive the steel reinforcement cage to rotate, while a welding mechanism performs the welding, thus improving production efficiency.

[0003] When constructing ultra-deep underground seepage barriers, not only are large reinforcing bars required, but there is also a need to process irregularly shaped reinforcing cages. However, existing automated welding equipment generally cannot meet these requirements. This is because existing equipment is mainly designed for standard cylindrical reinforcing cages, and its clamping and rotating mechanisms are coaxial. When welding irregularly shaped reinforcing cages with non-cylindrical cross-sections such as T-shapes is required, the rolling welding structure of the equipment itself limits its processing capabilities. Therefore, manual welding is usually used in existing technologies.

[0004] Secondly, existing technologies for adjusting the size of rebar cages are cumbersome and lack adaptability. To accommodate rebar cages of different diameters and lengths, existing equipment typically allows for some size adjustments, but these are done manually by replacing or significantly adjusting specialized tooling such as clamping molds and guide rings. When changing the length of the rebar cage, it is necessary to re-thread all the main reinforcing bars and adjust the stroke of the entire welding system. These adjustments are time-consuming and labor-intensive, require interrupting the production process, rely on skilled workers, and cannot achieve rapid switching between rebar cages of different specifications. This makes it difficult to meet the flexible production needs of modern construction for small batches and multiple varieties of rebar cages.

[0005] Finally, when processing steel cages with larger diameters, the bottom is prone to touching the ground, causing damage to the surface of the steel bars. In this case, if the support frame of the entire equipment needs to be raised, it involves complex modifications to the main structure, or even the replacement of large equipment, which is costly and has extremely poor flexibility, limiting the product adaptability of a single piece of equipment. Utility Model Content

[0006] To address the problems of existing technologies, such as the inability to automate the processing of irregularly shaped steel cages, cumbersome size adjustments, and insufficient environmental adaptability, this application provides an automatic steel bar welding device.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows: An automatic rebar cage welding device includes a frame and a welding execution unit disposed on the side of the frame for welding rebars. At least two support units are spaced apart along the length of the frame. Each support unit includes two vertically arranged telescopic columns that are opposite to each other. The top ends of the two telescopic columns jointly support a rotary clamping mechanism. The rotary clamping mechanism includes a disc body with an axially penetrating central hole in the middle of the disc body. A rotatable inner wheel is disposed in the central hole. Multiple radially retractable hydraulic sleeves are circumferentially mounted on the inner circumferential wall of the inner wheel. The ends of the hydraulic sleeves are provided with clamps for clamping the main rebars.

[0008] Furthermore, at least one of the support units is a movable support unit; at least two parallel sliding guide rails are installed along the length direction inside the frame, and each sliding guide rail is provided with at least one sliding base, and the bottoms of the two telescopic columns of the movable support unit are respectively fixedly connected to a sliding base.

[0009] Furthermore, it also includes a hydraulic power assembly and a displacement drive mechanism; the displacement drive mechanism includes at least one hydraulic push rod disposed on the side of each sliding guide rail, one end of the hydraulic push rod is fixed to the frame, and the other end is fixedly connected to the sliding base, and the hydraulic power assembly is drivenly connected to the hydraulic push rod.

[0010] Furthermore, the welding execution unit includes a clamping welding guide rail arranged parallel to the sliding guide rail. The clamping welding guide rail is divided into a first clamping welding guide rail and a second clamping welding guide rail. Both the first clamping welding guide rail and the second clamping welding guide rail are provided with at least two sliding bases. A clamping robotic arm is installed on the sliding base of the first clamping welding guide rail, and a welding robotic arm is installed on the sliding base of the second clamping welding guide rail.

[0011] Furthermore, the gripping robotic arm includes an arm body, on which a rotating head is connected, and a gripping claw is fixedly connected to the rotating head.

[0012] Furthermore, the clamping claw has a clamping groove for clamping the reinforcing bar.

[0013] Furthermore, it also includes an operating platform, which is electrically connected to the inner wheel, the telescopic column, the clamping robotic arm, and the welding robotic arm.

[0014] Beneficial effects: This invention systematically solves the technical problems in the prior art through a dynamically adjustable structural design. First, it achieves high-quality automated welding of irregularly shaped steel cages, as traditional coaxial rotating mechanisms cannot solve the technical problem of rotational imbalance in irregularly shaped components. This invention uses a rotating clamping mechanism on two support units to clamp and drive the steel cage body to rotate. Simultaneously, the radial extension and retraction of the hydraulic sleeve forms a cross-section of the irregularly shaped steel bar to be processed.

[0015] Then, the welding execution unit, composed of the clamping robotic arm and the welding robotic arm, acts as an independent motion system, flexibly positioning and welding around the rebar cage. This collaborative working mode, where the main body rotates, the welding torch follows, and even the main body and welding torch can move in a controllable manner, enables the equipment to accurately complete the welding of various parts of irregularly shaped rebar cages such as T-shaped ones, effectively avoiding vibration problems caused by centroid deviation and ensuring welding quality and equipment stability. At the same time, the circumferentially arranged hydraulic sleeve provides a strong radial clamping force, which can firmly clamp ultra-thick main bars, expanding the processing capacity range of the equipment.

[0016] Secondly, this invention achieves rapid and flexible adjustment of the rebar cage size through the combination of telescopic columns and movable support units. Firstly, by controlling the raising and lowering of the telescopic columns, the ground clearance of the rebar cage can be flexibly adjusted, effectively preventing it from touching the ground due to an increase in cage diameter. Secondly, by driving the sliding base along the sliding guide rail through a displacement drive mechanism, the distance between the two support units can be easily adjusted to accommodate rebar cages of different lengths without the need to re-thread the main reinforcement. This modular adjustment method replaces the cumbersome process of changing special tooling in the past, enabling rapid switching from one specification to another and meeting the needs of flexible production. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the second embodiment of the present utility model; Figure 3 This is an isometric schematic diagram of the second embodiment of the present invention; Figure 4 This is a side view of the second embodiment of the present invention; Figure 5This is a schematic diagram of the specific structure of the rotary clamping mechanism of this utility model; Figure 6 This is a schematic diagram of the clamping robotic arm structure of this utility model; In the diagram: 1-Frame, 11-Sliding guide rail, 12-Hydraulic push rod, 2-Hydraulic power assembly, 3-Main rib, 4-Sliding base, 41-Telescopic column, 5-Lifting motor, 6-Disc body, 61-Inner wheel, 62-Hydraulic sleeve rod, 621-Chuck, 7-Welding guide rail, 8-Clamping robotic arm, 81-Clamping claw, 811-Clamping groove, 82-Rotating head, 9-Welding robotic arm, 10-Operating table. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Example 1: like Figure 1 As shown in the figure, the specific structure of an automatic rebar cage welding device of the present invention includes a frame 1 and a welding execution unit disposed on the side of the frame 1 for welding rebar. At least two support units are arranged at intervals along the length direction on the frame 1. Each support unit includes two vertically arranged telescopic columns 41 that are opposite to each other. The top ends of the two telescopic columns 41 jointly support a rotary clamping mechanism. The rotary clamping mechanism includes a disc 6. The center of the disc 6 has an axially penetrating central hole. A rotatable inner wheel 61 is disposed in the central hole. Multiple radially telescopic hydraulic sleeves 62 are installed circumferentially on the inner circumferential wall of the inner wheel 61. The end of the hydraulic sleeves 62 is provided with a clamp 621 for clamping the main rebar 3.

[0026] Working principle: When in use, the operator first inserts the multiple main reinforcing bars 3 into the clamps 621 of each support unit and clamps them tightly. For example, if producing isosceles trapezoidal steel bars, then four main bars are inserted; Next, based on the three-dimensional contour data of the target irregular steel cage, the hydraulic sleeve 62 is driven to perform precise radial extension and retraction according to the program, thereby driving the main reinforcement 3 to move radially synchronously, so that its position in space forms a preset irregular shape, such as a T-shaped cross-sectional contour or an isosceles trapezoidal cross-sectional contour. Taking an isosceles trapezoidal cross-section as an example, let the upper base width be 4 units and the lower base width be 8 units. During forming, the hydraulic sleeves 62 located on both sides of the upper part of the cross-section synchronously extend and retract radially, causing the axes of the two main reinforcing bars 3 they hold to move closer to each other until the distance is 4 units; at the same time, the hydraulic sleeves 62 located on both sides of the lower part of the cross-section are correspondingly adjusted radially to make the axial distance of the corresponding main reinforcing bars 3 reach 8 units, so that the four main reinforcing bars 3 can form a preset isosceles trapezoidal outline in space.

[0027] It is understandable that the process of driving the hydraulic sleeve 62 to extend and position based on three-dimensional data can be achieved through pre-programming or setting it to the standard working mode of the device. This is a common application of control technology in the field of steel bar welding.

[0028] Subsequently, the telescopic column 41 adjusts the height of the frame, while the rotary clamping mechanism drives the entire main reinforcement frame to rotate at a constant speed. During this process, the welding execution unit moves along the axis of the frame 1, automatically welding the stirrups onto the rotating main reinforcement 3, thus forming a complete irregular-shaped steel cage in one continuous process. The process, through a flexible combination of radial telescopic and rotary motion, replaces the traditional need for dedicated molds for each irregular shape, solving the technical challenges of automated and efficient forming and welding of irregular-shaped steel cages in complex projects such as ultra-deep seepage barriers, where the shapes are varied.

[0029] like Figure 1 As shown, this device can also efficiently and effectively automate the welding of conventional circular rebar cages. When a circular cross-section needs to be processed, the multiple hydraulic sleeves 62 on all support units synchronously and equally extend and retract radially via control system commands, ensuring that the ends of each clamp 621 are precisely positioned on the same circumference, thus forming a standard circular profile. By setting different amounts of extension and retraction, the diameter of this circular profile can be quickly adjusted to accommodate various specifications of main reinforcement bars and stirrups. In this mode, the rotary clamping mechanism drives the clamped main reinforcement bars 3 to rotate at a uniform speed, and the welding execution unit moves along the frame axis to perform welding operations, thereby achieving continuous and automated roll welding of circular rebar cages. This function allows this invention to replace a series of fixed circular molds of different diameters with only one flexible and adjustable tooling system, realizing a multi-functional production mode from standard circular to complex irregular rebar cages. This greatly expands the applicability of the equipment, reduces the tooling investment and changeover time required for different specifications of products, and significantly improves production economy and efficiency.

[0030] It is understood that the welding execution unit can be implemented in various ways to adapt to different production needs and process preferences. For example, it can be specifically implemented as a gantry welding trolley that can move precisely along the length of the frame, equipped with multiple independently controllable welding torches to achieve multi-point synchronous welding of rotating rebar cages. Alternatively, the unit can also be one or more industrial robotic arms mounted on a linear module, which, with their flexible multi-degree-of-freedom movement capabilities, can perform precise tracking welding of complex nodes or three-dimensional welds. In addition, the unit can also integrate a laser ranging or vision sensing system to detect the position of the rebar in real time and provide feedback to adjust the welding path. Regardless of the specific structural form adopted, the welding execution unit is coordinated and controlled with the rotary clamping mechanism to form a complete flexible manufacturing system, thereby ultimately achieving fully automated production of various irregularly shaped rebar cages from contour forming to high-quality welding without relying on physical molds.

[0031] However, the welding execution unit is not the point of invention in this case, and therefore is not specifically limited.

[0032] Technical effects: This invention achieves significant technical results by combining a flexible radial positioning system with a rotary drive: it solves the industry problem of automating the production of irregularly shaped steel cages; through the precise extension and retraction of the hydraulic sleeve 62, the main reinforcement 3 can be directly driven to be positioned in three-dimensional space, and various complex cross-sectional contours can be formed quickly and accurately without any physical molds, greatly enhancing the adaptability and flexibility of the equipment; while ensuring welding quality and skeleton accuracy, it increases the production efficiency of irregularly shaped steel cages to a level close to that of standard steel cages, and significantly reduces the high mold costs and production preparation time caused by the special shape.

[0033] Example 2: To enable those skilled in the art to better understand this application, this embodiment makes further limitations based on the first embodiment.

[0034] like Figure 1-4 As shown, the automatic rebar cage welding device provided by this utility model includes a frame 1 as the main structure, which forms the foundation of the entire device. A welding execution unit for completing the final welding operation is provided on the side of the frame 1.

[0035] The core innovation of this utility model lies in at least two support units arranged at intervals along the length of the frame 1. Each support unit includes two vertically arranged telescopic columns 41 facing each other. The telescopic columns 41 are preferably hydraulic cylinders or lifting motors, and their extension stroke can be controlled and adjusted to adjust the clamping height. In this embodiment, the telescopic columns 41 adopt a lifting motor 5.

[0036] To accommodate steel cages of different specifications, the tops of the two telescopic columns 41 jointly support a key component, namely the rotary clamping mechanism.

[0037] The rotary clamping mechanism is the core for directly realizing the forming of irregular contours, including a disc 6 that is fixed or relatively fixedly installed on the top of the telescopic column 41.

[0038] like Figure 5 As shown, a central hole is machined through the middle of the disc body 6, and an inner wheel 61 that can rotate around its own axis is installed in the central hole through a rotating support component such as a bearing. The rotational power of the inner wheel 61 can be provided by a servo motor or hydraulic motor installed in the disc body 6 to ensure that its speed can be precisely controlled. As this is prior art, no specific limitation is made here.

[0039] On the inner circumferential wall of the inner wheel 61, multiple radially retractable hydraulic sleeves 62 are evenly installed along the circumference or distributed according to the design. Each hydraulic sleeve 62 is essentially a small hydraulic cylinder, with its cylinder body fixed to the inner wheel 61, and a clamp 621 for directly clamping the main reinforcing bars 3 is installed at the end of the piston rod. By controlling the extension or retraction of the piston rod of each hydraulic sleeve 62 through the hydraulic system, the position of its end clamp 621 in the radial direction can be precisely controlled. The set of radial positions of all clamps 621 defines a closed, variable two-dimensional profile. When multiple main reinforcing bars 3 are clamped by the corresponding clamps 621 on each support unit, by coordinating the extension and retraction of all hydraulic sleeves 62, the clamped multiple main reinforcing bars 3 can form a preset irregular cross-sectional shape in space.

[0040] To further enhance the flexibility and adaptability of the device, at least one of the support units is designed as a movable support unit that can move along the length of the frame.

[0041] like Figure 1-3 As shown, specifically, at least two parallel sliding guide rails 11 are fixedly installed along the length of the frame 1 inside it. Each sliding guide rail 11 is equipped with at least one sliding base 4 that can slide along the guide rail. For the movable support unit, the bottoms of the two telescopic columns 41 are respectively fixedly connected to a corresponding sliding base 4. By driving the sliding base 4 to move, the longitudinal position of the support unit on the frame can be adjusted, thereby accommodating steel cages of different lengths.

[0042] The sliding base 4 is driven by a displacement drive mechanism, which includes at least one hydraulic push rod 12 disposed on the side of each sliding guide rail 11. One end of the hydraulic push rod 12 is fixed to the end of the frame 1 or the frame, and the other end is fixedly connected to the rear of the sliding base 4 (relative to the direction of movement). A common hydraulic power assembly 2 provides power to all the hydraulic push rods 12, as well as the aforementioned hydraulic sleeve rod 62 and telescopic column 41.

[0043] By controlling the extension and retraction of the hydraulic push rod 12, the sliding base 4 and the entire support unit on it can be precisely driven to move along the sliding guide rail 11.

[0044] Furthermore, in this embodiment, the device was optimized and improved to address the problem that the main reinforcement 3 of the large-diameter, large-span steel cage used in the ultra-deep seepage barrier wall is prone to sagging in the middle due to its large span and self-weight before being welded into a whole.

[0045] Specifically, such as Figure 2 As shown, among the multiple support units arranged along the length of the frame 1, at least one support unit is specially configured as a central anti-sagging support unit, and its mechanical structure is exactly the same as the aforementioned movable support unit.

[0046] In the equipment layout, the central anti-sagging support unit is fixedly installed at the position of frame 1 in the middle of the expected span of the steel cage. When processing ultra-long steel cages, its core function is to work in conjunction with other support units at both ends before welding begins and in the early stage of welding to jointly clamp the main reinforcement 3, providing rigid support for the middle part and preventing it from sagging due to its own weight.

[0047] Its workflow is as follows: During the initial material loading and main reinforcement positioning stage, the central anti-sagging support unit starts working, the hydraulic sleeve 62 on the inner wheel 61 extends, and the clamp 621 clamps the main reinforcement 3, thereby physically forming an additional intermediate support point to ensure the straightness of the entire main reinforcement skeleton before welding.

[0048] As the welding unit moves along the frame to prepare for welding the central area, the control system issues a command: the clamp 621 of the central anti-sagging support unit first releases, and then the entire unit slides backward along the frame, moving away from the welding work area below the main reinforcement, thus creating uninterrupted operating space for the welding torch. Once the stirrups in this area are welded and a stable grid structure is formed, the main reinforcement has sufficient self-rigidity and no longer requires the physical support of the central anti-sagging support unit.

[0049] The welding execution unit is specifically configured as follows: On the frame 1, a dedicated welding guide rail 7 is arranged parallel to the sliding guide rail 11. This welding guide rail 7 is divided into a first welding guide rail 71 and a second welding guide rail 72 arranged side-by-side. Each welding guide rail 71 and 72 is also provided with at least two slidable sliding bases 4. A clamping robotic arm 8 is mounted on the sliding base 4 of the first welding guide rail 71, while a welding robotic arm 9 is mounted on the sliding base 4 of the second welding guide rail 72.

[0050] like Figure 6 As shown, the gripping robotic arm 8 is used to grasp and position the stirrups before welding. The structure includes an arm body, with a rotating head 82 capable of multi-degree-of-freedom movement connected to the front end of the arm body. A gripping claw 81 is fixedly installed at the end of the rotating head 82. The gripping claw 81 has a gripping groove 811 that matches the shape of the stirrup to ensure a firm grip.

[0051] The welding robotic arm 9 is a general-purpose industrial robot arm with a welding torch installed at its end for performing welding operations. Both the clamping robotic arm 8 and the welding robotic arm 9 can move along their respective clamping guide rails 7 to cover the entire length of the rebar cage.

[0052] The entire device is controlled by a centralized control console 10, which contains an industrial controller, such as a PLC, to control the rotation of the inner wheel 61, the gripping robotic arm 8, the welding robotic arm 9, and the electrical connections to control the movement of various hydraulic components. Operators can input or retrieve the 3D model data of the irregularly shaped steel cage on the console 10. The controller interprets the model data into a series of control commands, including the target extension / retraction sequence of each hydraulic sleeve 62, the rotational speed of the inner wheel 61, the height of the telescopic column 41, and the motion trajectory of the welding robotic arm 9, coordinating all components to operate automatically according to a predetermined program.

[0053] The working process of the automatic rebar cage welding device of this utility model is as follows: First, equipment preparation and main reinforcement positioning are performed. Based on the length specifications of the steel cage to be welded, at least one movable support unit is driven by a hydraulic push rod 12 to move along the sliding guide rail 11, adjusting its longitudinal position on the frame 1. This unit, together with the fixedly installed central anti-sagging support unit and other support units, determines multiple equally spaced or specifically spaced support points. The operator sequentially inserts multiple main reinforcement bars 3 into the chucks 621 of the rotary clamping mechanism of each support unit. Subsequently, the control system, based on the input target steel cage 3D model data, sends commands to the inner wheels 61 of all support units, driving each hydraulic sleeve rod 62 to perform precise radial extension and retraction, moving the chucks 621 at the ends of each hydraulic sleeve rod 62 to the program-set spatial coordinate points and firmly clamping the corresponding main reinforcement bar 3. During this process, the central anti-sagging support unit plays a crucial role. The chucks 621 clamp the middle of the main reinforcement bar 3 in the initial stage, providing an additional rigid support point to prevent the large-span main reinforcement bars from sagging due to their own weight, ensuring that all main reinforcement bars remain straight before welding and form a preset, precise spatial skeleton.

[0054] Next, the automated welding cycle begins, driving the inner wheels 61 of each support unit to rotate synchronously and uniformly, thereby causing the entire main reinforcement 3 skeleton being clamped to rotate around its axis. The welding execution unit begins its work: the clamping robotic arm 8 moves along the first clamping welding guide rail 71 to the stirrup loading position, its clamping claws 81 grab a stirrup, move and precisely position it to the starting welding position of the reinforcing cage, and tightly press the stirrup against the outside of the rotating main reinforcement 3. Almost simultaneously, the welding robotic arm 9 moves along the second clamping welding guide rail 72 to the corresponding position, starts the welding torch, and performs welding on the contact point between the stirrup and the main reinforcement 3. As the main reinforcement skeleton continues to rotate, the welding robotic arm 9 can complete the circumferential welding of the entire ring of stirrups. As the welding section approaches the center of the reinforcing cage, the control panel 10 issues a pre-emptive command: the clamps 621 of the central anti-sagging support unit automatically release their grip on the main reinforcing bar 3. Driven by the hydraulic push rod 12, the sliding base 4 at the bottom slides the entire unit backward along the frame 1, completely removing it from the welding work space below the main reinforcing bar, thus creating an interference-free operating area for the welding robotic arm 9. Once the stirrups in this area are welded and a stable structure is formed, the central unit completes its support task.

[0055] Subsequently, under the coordination of the control system, the clamping robotic arm 8 and the welding robotic arm 9 move stepwise along the clamping and welding guide rail 7 to the next axial position, repeating the stirrup feeding, positioning, and welding operations until the welding of the entire length of the reinforcing cage is completed. Throughout the process, the telescopic column 41 can adjust the vertical height of the reinforcing cage according to process requirements. For variable cross-section irregular reinforcing cages, the control system can adjust the extension and retraction of the hydraulic sleeve 62 on the corresponding support unit in real time when welding different sections, dynamically changing the spatial contour formed by the main reinforcing bars 3, thereby achieving one-time continuous forming and welding. The entire workflow is centrally managed by the controller of the operating table 10, operating fully automatically, and ultimately efficiently producing complex-shaped irregular reinforcing cages or standard circular reinforcing cages.

[0056] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic rebar cage welding device, comprising a frame (1) and a welding execution unit disposed on the side of the frame (1) for welding rebar, characterized in that: At least two support units are spaced apart along the length of the frame (1); each support unit includes two vertically arranged telescopic columns (41) that are opposite to each other. The tops of the two telescopic columns (41) jointly support a rotary clamping mechanism. The rotary clamping mechanism includes a disc (6). The disc (6) has an axially penetrating central hole in the middle. A rotatable inner wheel (61) is provided in the central hole. Multiple radially extendable hydraulic sleeves (62) are installed circumferentially on the inner circumferential wall of the inner wheel (61). The end of the hydraulic sleeve (62) is provided with a clamp (621) for clamping the main rib (3).

2. The automatic rebar cage welding device according to claim 1, characterized in that: At least one of the support units is a movable support unit; at least two parallel sliding guide rails (11) are installed in the frame (1) along the length direction, and at least one sliding base (4) is provided on each of the sliding guide rails (11), and the bottoms of the two telescopic columns (41) of the movable support unit are respectively fixedly connected to a sliding base (4).

3. The automatic rebar cage welding device according to claim 2, characterized in that: It also includes a hydraulic power assembly (2) and a displacement drive mechanism; the displacement drive mechanism includes at least one hydraulic push rod (12) disposed on the side of each sliding guide rail (11), one end of the hydraulic push rod (12) is fixed to the frame (1), and the other end is fixedly connected to the sliding base (4), and the hydraulic power assembly (2) is connected to the hydraulic push rod (12) in a transmission connection.

4. The automatic rebar cage welding device according to claim 3, characterized in that: The welding execution unit includes a clamping welding guide rail (7) arranged parallel to the sliding guide rail (11). The clamping welding guide rail (7) is divided into a first clamping welding guide rail (71) and a second clamping welding guide rail (72). Both the first clamping welding guide rail (71) and the second clamping welding guide rail (72) are provided with at least two sliding bases (4). A clamping robotic arm (8) is installed on the sliding base (4) of the first clamping welding guide rail (71), and a welding robotic arm (9) is installed on the sliding base (4) of the second clamping welding guide rail (72).

5. The automatic rebar cage welding device according to claim 4, characterized in that: The gripping robotic arm (8) includes an arm body, on which a rotating head (82) is connected, and a gripping claw (81) is fixedly connected to the rotating head (82).

6. The automatic rebar cage welding device according to claim 5, characterized in that: The clamping claw (81) has a clamping groove (811) for clamping the reinforcing bar.

7. The automatic rebar cage welding device according to claim 6, characterized in that: It also includes an operating table (10), which is electrically connected to the inner wheel (61), the telescopic column (41), the clamping robotic arm (8), and the welding robotic arm (9).

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