Automatic reinforcement cage welding device and welding method

Abstract

The application belongs to the technical field of steel reinforcement cage welding equipment, and particularly provides a steel reinforcement cage automatic welding device and a welding method. The steel reinforcement cage automatic welding device comprises a welding assembly, a main reinforcement feeding assembly, a winding reinforcement feeding assembly, a reinforcing reinforcement feeding assembly and a cage pulling assembly. The welding assembly comprises a rack, a winding reinforcement welding unit and a reinforcing reinforcement welding unit. Before welding, a plurality of prepared reinforcing reinforcements are placed on the bracket first. The winding reinforcement feeding assembly winds the winding reinforcement on the main reinforcement, and then the winding reinforcement welding unit is used to weld and fix the winding reinforcement and the main reinforcement. When welding the reinforcing reinforcement, the extrusion unit is used to apply a radial extrusion force to the reinforcing reinforcement, so that the reinforcing reinforcement is inwardly contracted to contact the main reinforcement, and then the reinforcing reinforcement welding unit is used to weld and fix the main reinforcement and the reinforcing reinforcement. In this way, the automatic welding of the reinforcing reinforcement is realized, which helps to improve the automation level of the steel reinforcement cage welding.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of steel reinforcement cage welding equipment, and particularly relates to a steel reinforcement cage automatic welding device and a welding method. BACKGROUND

[0002] As a core framework in a concrete pouring structure, a steel reinforcement cage is widely used in the fields of pile foundation, bridge pier, column and other civil engineering, and is composed of longitudinal main reinforcement, spiral winding reinforcement and interval arranged annular reinforcing bar. At present, the preparation process of the steel reinforcement cage has gradually developed from the traditional manual binding to the automatic welding direction. Various automatic welding steel reinforcement cage welding devices have appeared on the market. These devices are usually based on the combination of a main reinforcement conveying mechanism, a reinforcement unwinding and winding system and a resistance welding automatic welding unit, can realize the automatic feeding and positioning of the main reinforcement, and simultaneously complete the spiral winding of the reinforcement and the welding of the contact point of the main reinforcement. This kind of technology significantly improves the welding efficiency and consistency of the main reinforcement and the reinforcement, reduces the labor intensity, and improves the overall processing quality of the steel reinforcement cage.

[0003] However, the existing automatic welding device of the steel reinforcement cage still has obvious limitations in function. Its design mainly focuses on the welding process of the main reinforcement and the reinforcement, and the installation and welding of the annular reinforcing bar are generally not automated. In actual production process, the reinforcing bar needs to be pre-bent according to the design size, and then manually carried to the corresponding position of the assembled main reinforcement and reinforcement framework by the operator, and then welded and fixed by manual positioning. This step relies on a large amount of manpower, which makes it difficult to further improve the production efficiency.

[0004] For large-scale and long-line steel reinforcement cage production, manual welding of reinforcing bars has become a bottleneck restricting the overall production line rhythm and automation level. Therefore, how to integrate the manufacturing, conveying, positioning and welding of reinforcing bars into the automatic process has become the key to upgrading the steel reinforcement cage production line to a higher intelligent and complete level. SUMMARY

[0005] Based on the above technical problems, the application provides a steel reinforcement cage automatic welding device and a welding method to solve the technical problem that the steel reinforcement cage cannot be automatically welded with reinforcing bars in the prior art.

[0006] To achieve the above purpose, the technical scheme adopted by the application is:

[0007] In a first aspect, the application provides a steel reinforcement cage automatic welding device, comprising:

[0008] A welding assembly comprising a rack, a reinforcement welding unit and a reinforcing bar welding unit, the rack having a welding channel passing through the steel reinforcement cage in the axial direction, the reinforcement welding unit and the reinforcing bar welding unit being located on the discharge side of the welding channel;

[0009] The main reinforcement feeding assembly is arranged at the feeding side of the welding channel and used for conveying the main reinforcement;

[0010] The winding reinforcement feeding assembly is arranged at the discharging side of the welding channel and used for conveying the winding reinforcement to the welding position of the winding reinforcement welding unit;

[0011] The reinforcing bar feeding assembly comprises a bracket and an extrusion unit, the bracket is located below the welding position of the reinforcing bar welding unit, a plurality of the brackets are sequentially arranged along the axial direction of the reinforcement cage, the bracket can be lifted along the vertical direction, the extrusion unit corresponds to the bracket, the extrusion unit comprises a plurality of pressing rods which are arranged at intervals along the circumferential direction of the reinforcement cage, the pressing rod and the corresponding bracket form a reinforcing bar accommodating space, and the pressing rod can be extended and retracted along the radial direction of the reinforcement cage; and

[0012] The cage pulling assembly is arranged at the discharging side of the welding channel and can move along the axial direction of the reinforcement cage and drive the reinforcement cage to rotate to wind the winding reinforcement.

[0013] In a possible implementation, the reinforcing bar feeding assembly further comprises a manufacturing unit, and the manufacturing unit comprises:

[0014] The positioning plate has a guide groove for accommodating the reinforcing bar, and the guide groove is linear;

[0015] The bending mechanism comprises a loading table, two positioning wheels which are arranged at intervals along the extension direction of the guide groove on the loading table, a movable wheel which is arranged between the two positioning wheels, and a first driving member; the positioning wheel and the movable wheel form a bending channel through which the reinforcing bar passes, and the first driving member is used for driving the movable wheel to move along a direction which is perpendicular to the connecting line of the two positioning wheels and parallel to the surface of the loading table; and

[0016] The cutting mechanism is arranged on the loading table and used for cutting the reinforcing bar.

[0017] In a possible implementation, the cutting mechanism comprises:

[0018] The hydraulic shear has two shear blades which can be relatively displaced, a shear groove is formed between the two shear blades, and the opening of the shear groove faces upward; the hydraulic shear has an avoiding position which is lower than the surface of the loading table and a shearing position which is higher than the surface of the loading table; and

[0019] The second driving member is arranged on the loading table and used for driving the hydraulic shear to move between the shearing position and the avoiding position.

[0020] In a possible implementation, the bracket comprises:

[0021] A fixing frame is arranged below the welding position of the reinforcing bar welding unit;

[0022] A positioning frame is slidingly fitted in the fixing frame, and a positioning groove is formed in the top of the positioning frame and penetrates through the reinforcing cage in the discharging direction;

[0023] A positioning rod is arranged on one side of the positioning frame in the discharging direction of the reinforcing cage, the upper part of the positioning rod protrudes from the positioning groove, and the positioning rod and the positioning groove jointly form a positioning space for accommodating the reinforcing bar, and the positioning rod is connected with the positioning frame through a horizontal hinge shaft;

[0024] A torsional spring is arranged on the hinge shaft of the positioning rod and the positioning frame, and the torsional spring is used to provide a pre-tightening force for rotating the positioning rod to abut against the positioning frame; and

[0025] A third driving member is arranged on the fixing frame and is used to drive the positioning frame to ascend and descend.

[0026] In a possible implementation, the reinforcing bar feeding assembly comprises:

[0027] A storage rack has a support shaft for winding the reinforcing bar;

[0028] A guide mechanism is arranged on the discharging side of the storage rack, and the guide mechanism comprises a plurality of groups of guide wheels arranged at intervals in the discharging direction of the reinforcing bar, and each group of guide wheels comprises two guide wheels arranged oppositely in the up-down direction; and

[0029] A straightening mechanism is arranged between the guide mechanism and the reinforcing bar welding unit.

[0030] In a possible implementation, the reinforcing bar feeding assembly further comprises a support unit connected with the rack, the support unit is annular and located in the same radial plane as the pressing rod, and the outer diameter of the support unit is smaller than the inner diameter of the reinforcing cage.

[0031] In a possible implementation, the main bar feeding assembly comprises:

[0032] A distributor is in the shape of a cylinder coaxial with the welding channel, the distributor is rotationally fitted with the rack, one end of the distributor is located on the feeding side of the welding channel, and the other end of the distributor extends into the welding channel, a plurality of distribution grooves are arranged at intervals in the circumferential direction of the distributor, and each distribution groove is used to accommodate a main bar; and

[0033] Two feeding units are oppositely arranged on the two sides of the distributor, and the two feeding units are respectively used to store main bars of different lengths.

[0034] In a possible implementation, the feeding unit comprises:

[0035] The feeding mechanism comprises a plurality of feeding rollers arranged at intervals along the feeding direction;

[0036] The guide mechanism is arranged on one side of the feeding mechanism adjacent to the distributor, and comprises a plurality of guide plates arranged at intervals along the feeding direction, and one end of the guide plate adjacent to the distributor is arranged obliquely downward; and

[0037] The lifting mechanism is arranged between two adjacent feeding rollers, and the top of the lifting mechanism is provided with a lifting block, and one end of the lifting block adjacent to the distributor is arranged obliquely downward.

[0038] In a possible implementation, the main reinforcement feeding assembly further comprises an automatic reinforcement penetrating unit, and the automatic reinforcement penetrating unit comprises:

[0039] The mounting frame is arranged at the feeding end of the distributor, and the mounting frame is provided with a guide rail along the feeding direction;

[0040] The reinforcement penetrating rod is slidingly arranged in the guide rail, and during rotation of the distributor, the reinforcement penetrating rod is coaxially arranged in the plurality of distribution grooves in sequence; and

[0041] The fourth driving member is arranged on the mounting frame and is used for driving the reinforcement penetrating rod to move along the guide rail.

[0042] Compared with the prior art, the steel reinforcement cage automatic welding device provided by the application has the following beneficial effects:

[0043] The steel reinforcement cage automatic welding device provided by the application comprises a welding assembly, a main reinforcement feeding assembly, a winding reinforcement feeding assembly, a reinforcing reinforcement feeding assembly and a cage pulling assembly. Before welding, a plurality of prefabricated reinforcing reinforcements are placed on the bracket. When welding is needed, the main reinforcement feeding assembly is used to convey the main reinforcement, so that the main reinforcement penetrates the inner ring of the reinforcing reinforcement, the cage pulling assembly is used to pull the main reinforcement at a uniform speed on the other side, the winding reinforcement feeding assembly is used to wind the winding reinforcement on the main reinforcement, and the winding reinforcement is welded and fixed by the winding reinforcement welding unit. When welding the reinforcing reinforcement, the extrusion unit is used to apply a radial extrusion force to the reinforcing reinforcement, so that the reinforcing reinforcement is inwardly contracted to contact the main reinforcement, and then the main reinforcement and the reinforcing reinforcement are welded and fixed by the reinforcing reinforcement welding unit.

[0044] The bracket is used to pre-support the reinforcing reinforcement, the bracket is lifted and the radial extrusion of the pressing rod is used when welding of the reinforcing reinforcement is needed, so that the prefabricated annular reinforcing reinforcement can be positioned and tightly clamped at the predetermined position of the main reinforcement automatically and accurately, and then the welding is automatically completed by the reinforcing reinforcement welding unit. In this way, the automation level of the steel reinforcement cage welding is improved, the welding consistency and positioning accuracy of the reinforcing reinforcement are guaranteed, and the labor cost and labor intensity are reduced.

[0045] In a second aspect, the application provides a steel reinforcement cage automatic welding method using the steel reinforcement cage automatic welding device, comprising the following steps:

[0046] The reinforcing bars are placed on the corresponding brackets by the reinforcing bar feeding assembly, so that the reinforcing bars are arranged at intervals along the axial direction of the steel reinforcement cage;

[0047] The main bars are fed to the welding channel by the main bar feeding assembly, one end of the main bar is clamped and fixed by the cage pulling assembly after passing through the inner ring of the reinforcing bar and the welding channel, and the main bars are arranged at equal intervals in the circumferential direction;

[0048] One end of the winding bar is welded and fixed on the main bar by the winding bar feeding assembly;

[0049] The cage pulling assembly rotates while feeding the main bar, so that the winding bar is spirally wound on the main bar, and the main bar and the winding bar are welded and fixed by the winding bar welding unit;

[0050] When the reinforcing bar needs to be welded, the bracket is raised and the extrusion unit is extruded in the radial direction, so that the inner ring of the reinforcing bar abuts against the main bar, then the reinforcing bar and the main bar are welded and fixed by the reinforcing bar welding unit, and finally the extrusion unit is reset;

[0051] During the welding of the steel reinforcement cage, the cage pulling assembly drives the steel reinforcement cage to feed a length each time, and the reinforcing bar feeding assembly acts once to weld the reinforcing bars at intervals at different positions of the main bar.

[0052] The steel reinforcement cage automatic welding method provided by the application is implemented by using the above-mentioned steel reinforcement cage automatic welding device, has the same technical effects, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0054] Figure 1 It is a structural schematic diagram of the steel reinforcement cage in the prior art;

[0055] Figure 2 It is a schematic diagram of the welding point distribution of the main bar when two steel reinforcement cages are spliced in the prior art;

[0056] Figure 3 It is a structural schematic diagram of two steel reinforcement cages with long and short main bars staggered;

[0057] Figure 4 It is a schematic diagram of the welding point distribution of the main bar when two steel reinforcement cages with staggered main bar lengths are spliced;

[0058] Figure 5 The overall schematic diagram of the automatic reinforcing cage welding device provided by the embodiment of the present application is shown in the figure;

[0059] Figure 6 The structural schematic diagram of the reinforcing rib used by the embodiment of the present application is shown in the figure;

[0060] Figure 7 The partial schematic diagram of the manufacturing unit in the embodiment of the present application is shown in the figure;

[0061] Figure 8 The structural schematic diagram of the reinforcing rib transfer mechanical arm in the embodiment of the present application is shown in the figure;

[0062] Figure 9 The structural schematic diagram of the reinforcing ribs placed on the carriers in sequence is shown in the figure;

[0063] Figure 10 The structural schematic diagram of the rack, the rib welding unit, the carrier, and the extrusion unit in the embodiment of the present application is shown in the figure;

[0064] Figure 11 The partial schematic diagram of the rack, the carrier, and the supporting unit in the embodiment of the present application is shown in the figure;

[0065] Figure 12 The partial schematic diagram of the main rib feeding assembly in the embodiment of the present application is shown in the figure;

[0066] Figure 13 The structural schematic diagram of the automatic rib penetrating unit in the embodiment of the present application is shown in the figure;

[0067] Figure 14 The partial schematic diagram of the cage pulling assembly in the embodiment of the present application is shown in the figure;

[0068] Figure 15 The partial schematic diagram of the supporting assembly in the embodiment of the present application is shown in the figure;

[0069] Figure 16 The partial schematic diagram of the feeding unit in the embodiment of the present application is shown in the figure;

[0070] Explanation of reference signs:

[0071] 10, welding assembly; 11, frame; 12, winding bar welding unit; 13, reinforcing bar welding unit; 20, main bar feeding assembly; 21, distributor; 22, feeding unit; 221, feeding mechanism; 222, guide mechanism; 223, lifting mechanism; 23, automatic bar penetrating unit; 231, mounting frame; 2311, guide rail; 232, penetrating bar; 233, fourth driving member; 30, winding bar feeding assembly; 31, storage frame; 32, guide mechanism; 33, straightening mechanism; 40, reinforcing bar feeding assembly; 41, bracket; 411, fixing frame; 412, positioning frame; 413, positioning rod; 414, third driving member; 42, extruding unit; 43, manufacturing unit; 431, positioning plate; 432, bending mechanism; 4321, loading table; 4322, positioning wheel; 4323, movable wheel; 433, cutting mechanism; 4331, hydraulic shear; 4332, second driving member; 434, reinforcing bar transfer manipulator; 44, supporting unit; 50, pulling cage assembly; 51, supporting assembly; 60, discharging guide frame; 100, welding point; 101, main bar of steel cage; 102, reinforcing bar of steel cage; 103, winding bar of steel cage. DETAILED DESCRIPTION

[0072] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0073] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0074] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0075] In addition, the terms "first", "second", "third", etc. are used herein only to describe different instances, and are not used to indicate or imply relative importance or a number of indications of the technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" or "several" is two or more, unless otherwise explicitly and specifically limited.

[0076] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0077] Please refer to Figures 1 to 16 , the steel reinforcement cage automatic welding device and welding method provided by the embodiments of the present application are described below.

[0078] The present application belongs to the technical field of steel reinforcement cage welding equipment, and specifically relates to an integrated and automated steel reinforcement cage welding device and welding method, which focuses on solving the problems of automatic feeding, positioning and welding of annular reinforcing bars, and aims to realize full-process automated welding production from main bars, winding bars to reinforcing bars.

[0079] As shown in Figure 1 , although the automated welding equipment in the prior art improves the welding efficiency of the main bars 101 and the winding bars 103, the installation of the annular reinforcing bars 102 still relies on manual operation, which becomes a bottleneck of the automation of the production line. The manual welding of the reinforcing bars 102 has problems such as low efficiency, positioning accuracy affected by human factors, high labor intensity, safety hazards and the like, and it is difficult to meet the production needs of large-scale, standardized and high-quality steel reinforcement cages. Therefore, developing a full-automatic device capable of integrating automatic manufacturing, conveying, positioning and welding of reinforcing bars 102 is of great importance to improve the intelligent level and production efficiency of the entire steel reinforcement cage production line.

[0080] Please refer to Figure 1 , the steel reinforcement cage structure in the prior art includes main bars, winding bars and reinforcing bars, wherein the reinforcing bars in the prior art are closed annular (i.e. complete circular rings) and are arranged at the inner circle of the steel reinforcement cage. Unlike the prior art, the reinforcing bars 102 of the steel reinforcement cage produced by the embodiments of the present application adopt an open design, and the specific structure is shown in Figure 6 . The open design allows it to be compressed and reduced under the action of external extrusion force. When the reinforcing bar 102 is welded, it is first extruded to abut the outer circle of the steel reinforcement cage under the action of external force, and then welded and fixed with the main bars 101 or winding bars 103 of the steel reinforcement cage.

[0081] In order to achieve the above-mentioned purposes, please refer to Figure 5 , Figure 9 , Figure 10 , Figure 11 andFigure 14 In the first aspect, the application provides a reinforcing cage automatic welding device, comprising a welding assembly 10, a main reinforcement feeding assembly 20, a winding reinforcement feeding assembly 30, a reinforcing bar feeding assembly 40 and a cage pulling assembly 50.

[0082] The welding assembly 10 comprises a rack 11, a winding reinforcement welding unit 12 and a reinforcing bar welding unit 13, the rack 11 has a welding channel passing through the reinforcing cage in the axial direction, the winding reinforcement welding unit 12 and the reinforcing bar welding unit 13 are respectively located at the discharging side of the welding channel, the winding reinforcement welding unit 12 is used for welding the winding reinforcement 103 on the main reinforcement 101, and the reinforcing bar welding unit 13 is used for welding the reinforcing bar 102 to the main reinforcement 101 or the winding reinforcement 103, that is, the intersection position of the welding points.

[0083] The main reinforcement feeding assembly 20 is arranged at the feeding side of the welding channel and is used for conveying the main reinforcement. The winding reinforcement feeding assembly 30 is arranged at the discharging side of the welding channel and is used for conveying the winding reinforcement to the welding position of the winding reinforcement welding unit 12. The reinforcing bar feeding assembly 40 comprises a bracket 41 and a pressing unit 42, the bracket 41 is located below the welding position of the reinforcing bar welding unit 13, a plurality of brackets 41 are sequentially arranged in the axial direction of the reinforcing cage, the bracket 41 is used for supporting the reinforcing bar 102 and can be lifted in the vertical direction, the pressing unit 42 comprises a plurality of pressing rods arranged at intervals in the circumferential direction of the reinforcing cage, the plurality of pressing rods and the corresponding bracket 41 form a reinforcing bar accommodating space, and the pressing rod can be extended and retracted in the radial direction of the reinforcing cage. The cage pulling assembly 50 is arranged at the discharging side of the welding channel and can clamp the main reinforcement 101 at the end. The cage pulling assembly 50 can move in the axial direction of the reinforcing cage and rotate around the axial direction of the reinforcing cage, so as to spiral the winding reinforcement on the main reinforcement.

[0084] It can be understood that when the reinforcing cage is long, the reinforcing cage can be supported by the supporting assembly 51 as shown. Figure 15 After the welding is completed, the reinforcing cage is guided to roll down along the inclined surface of the discharging guide frame 60 through the discharging guide frame 60 on one side. The supporting and discharging devices of the reinforcing cage are prior art, and the structure and use mode thereof will not be described in detail.

[0085] Compared with the prior art, the reinforcing cage automatic welding device provided by the embodiment of the application has the following beneficial effects:

[0086] The steel bar cage automatic welding device provided by the embodiments of the present application comprises a welding assembly 10, a main bar feeding assembly 20, a winding bar feeding assembly 30, a reinforcing bar feeding assembly 40 and a cage pulling assembly 50. The welding assembly 10 comprises a rack 11, a winding bar welding unit 12 and a reinforcing bar welding unit 13. Before welding, a plurality of prefabricated reinforcing bars 102 are first placed on the bracket 41. When welding is needed, the main bar feeding assembly 20 is used to convey the main bar, so that the main bar 101 passes through the inner ring of the reinforcing bar 102, the cage pulling assembly 50 is used to pull the main bar 101 at a uniform speed on the other side, the winding bar feeding assembly 30 is used to wind the winding bar 103 on the main bar 101, and then the winding bar 103 is welded and fixed to the main bar 101 by the winding bar welding unit 12. When the reinforcing bar 102 is welded, the reinforcing bar 102 is subjected to radial extrusion by the extrusion unit 42, so that the reinforcing bar 102 is inwardly contracted to be in contact with the main bar 101, and then the main bar 101 and the reinforcing bar 102 are welded and fixed by the reinforcing bar welding unit 13.

[0087] The embodiments of the present application can automatically and accurately position the prefabricated annular reinforcing bar 102 and tightly clamp the reinforcing bar 102 at the predetermined position of the main bar 101 by lifting the bracket 41 and radially extruding the pressing rod when welding of the reinforcing bar 102 is needed, and then the welding is automatically completed by the reinforcing bar welding unit 13. In this way, the automation level of the steel bar cage welding is improved, the welding consistency and positioning accuracy of the reinforcing bar are ensured, and the labor cost and labor intensity are reduced.

[0088] The rack 11 serves as a support and is made of steel by welding or bolt connection, and provides rigid support for the entire device. The axis of the welding channel coincides with the central axis of the finally formed steel bar cage. The winding bar welding unit 12 and the reinforcing bar welding unit 13 can directly use existing welding equipment on the market, such as resistance welding machines, welding robots or other applicable automatic welding equipment.

[0089] As shown in FIGS. Figure 5 and Figure 12 In a specific embodiment, the winding bar welding unit 12 is a resistance welding machine, which welds the winding bar to the main bar during the rotation of the winding bar with the main bar. The reinforcing bar welding unit 13 is a welding robot, and the welding gun thereof is installed on the rack 11 through a multi-dimensional movement mechanism (robot arm) to realize accurate welding position control. The resistance welding machine and the welding robot are existing welding equipment, and their specific structures and use methods will not be described here.

[0090] The cage pulling assembly 50 generally comprises a rotatable chuck or clamp, and a linear motion mechanism (such as a motorized trolley, a rack and pinion, a synchronous belt or chain transmission mechanism driven by a servo motor) to drive the chuck or clamp to move axially (i.e. in the direction of the cage discharge). The cage pulling assembly 50 rotates at a constant speed while discharging the cage, and can be driven by a motor and gear structure or a belt transmission structure to rotate the chuck or clamp.

[0091] The cage pulling assembly 50 can complete three motion modes, i.e. rotation only, translation only, and rotation while translating, according to the requirements of use.

[0092] The plurality of carriers 41 are arranged along the direction of the cage discharge, and the carriers 41 can move along the direction of the discharge to ensure that each reinforcing bar can be moved to the position directly below the welding position. During welding, the reinforcing bar is first fixed by the reinforcing bar welding unit 13, and then the cage pulling assembly 50 drives the cage to rotate, and the reinforcing bar welding unit 13 can sequentially weld the plurality of connecting points between the reinforcing bar and the main bar during the rotation.

[0093] The extension and retraction of the pressing rod can be achieved by a pneumatic cylinder, a hydraulic cylinder or an electric push rod, and the end thereof can be provided with a roller or a wear-resistant pad, the roller can reduce the friction resistance, and the wear-resistant pad can improve the service life. The height and radial dimension of the accommodation space can be adjusted according to the diameter of the reinforcing bar and the design specification of the cage.

[0094] Please refer to Figure 6 , Figure 7 and Figure 8 In some possible embodiments, the reinforcing bar feeding assembly 40 further comprises a manufacturing unit 43 and a reinforcing bar transfer manipulator 434, the manufacturing unit 43 is used to automatically bend a straight reinforcing bar into a ring-shaped reinforcing bar on site. The manufacturing unit 43 comprises a positioning plate 431, a bending mechanism 432 and a cutting mechanism 433, and can manufacture the reinforcing bar as shown in Figure 6 The reinforcing bar transfer manipulator 434 can automatically grasp the reinforcing bar and transfer it to the carrier 41, so that the reinforcing bars are arranged in the state as shown in Figure 9 .

[0095] Specifically, the positioning plate 431 is fixed on the loading table 4321, the width of the guide groove is slightly larger than the diameter of the reinforcing bar (for example, for reinforcing bars with a diameter of 8-20 mm, the groove width can be 1-3 mm larger than the diameter of the reinforcing bar), and the depth can accommodate the reinforcing bar. The bending mechanism 432 comprises a loading table 4321, two positioning wheels 4322 spaced apart along the extension direction of the guide groove on the loading table 4321, a movable wheel 4323 arranged between the two positioning wheels 4322, and a first driving member; the positioning wheel 4322 and the movable wheel 4323 form a bending channel for the reinforcing bar to pass through, and the first driving member is used to drive the movable wheel 4323 to move in a direction perpendicular to the connecting line of the two positioning wheels 4322 and parallel to the table surface of the loading table 4321.

[0096] The center distance of the two positioning wheels 4322 determines the bending diameter of the annular reinforcing bar, which can be fixed in the T-shaped groove of the material loading table 4321 by bolts to adjust the distance according to design requirements. The movable wheel 4323 is connected to the first driving member through a sliding seat. The first driving member can be a servo motor (with a lead screw), a hydraulic cylinder, or a pneumatic cylinder, which drives the movable wheel 4323 to make a linear reciprocating motion. When the reinforcing bar passes through the bending channel, the first driving member pushes the movable wheel 4323, causing the reinforcing bar to plastically bend under the support of the positioning wheels 4322, and the straight reinforcing bar is bent into a circular or required arc segment. The cutting mechanism 433 is used to cut the reinforcing bar after the bending of the reinforcing bar is completed or when the reinforcing bar needs to be cut to a certain length. After cutting, the reinforcing bar is transferred to the bracket 41 by the reinforcing bar transfer manipulator 434 shown in the figure. Figure 8 The reinforcing bar transfer manipulator 434 shown in the figure grasps the reinforcing bar on the material loading table 4321 and transfers it to the bracket 41.

[0097] Please refer to Figure 7 In some possible embodiments, the cutting mechanism 433 includes a hydraulic shear 4331 and a second driving member 4332.

[0098] The hydraulic shear 4331 is arranged on the discharge side of the bending channel, and has two shear blades capable of relative displacement, forming a shear groove between the two shear blades, the opening of the shear groove faces upward, and is driven by hydraulic pressure to cut the reinforcing bar. The hydraulic shear 4331 has a position lower than the surface of the material loading table 4321 to avoid interference, and a shear position higher than the surface of the material loading table 4321; when the bending operation of the reinforcing bar is performed, the hydraulic shear 4331 is located at the avoidance position and does not affect the normal operation of the bending mechanism 432. When the reinforcing bar needs to be cut, the second driving member 4332 arranged on the material loading table 4321 drives the hydraulic shear 4331 to rise from the avoidance position to the shear position, at this time the reinforcing bar is in the shear groove, and the two shear blades are driven by hydraulic pressure to approach each other to cut the reinforcing bar. After cutting, the second driving member 4332 drives the hydraulic shear 4331 to reset to the avoidance position, and the manufacturing unit 43 can continue the bending operation of the next reinforcing bar.

[0099] The hydraulic shear 4331 in the embodiment can adopt a conventional hydraulic steel bar cutting machine structure, the shape of the cutting edge thereof matches the steel bar cross section, and the specific specifications and models of the hydraulic shear 4331 are not limited, and the hydraulic shear 4331 can meet the use requirements. The second driving member 4332 can be a pneumatic cylinder, a hydraulic cylinder or an electric push rod, is installed on a support below the material loading table 4321, and the piston rod or push rod thereof is connected with the base of the hydraulic shear 4331. In the non-cutting state (avoiding position), the top of the hydraulic shear 4331 is lower than the table top of the material loading table 4321, and the smooth conveying of the steel bar on the material loading table 4321 is ensured. When cutting is needed, the second driving member 4332 lifts the hydraulic shear 4331 to the cutting position, at this time, the opening of the cutting groove corresponds to the position of the steel bar, and the hydraulic shear 4331 acts to complete the cutting. After completion, the hydraulic shear 4331 is lowered and reset. A sensor can be arranged to detect the steel bar positioning signal to trigger the cutting action.

[0100] Please refer to Figure 9 In some possible embodiments, the bracket 41 comprises a fixing frame 411, a positioning frame 412, a positioning rod 413 and a torsional spring. The fixing frame 411 is arranged below the welding position of the reinforcing bar welding unit 13, and the fixing frame 411 can be fixed on the rack 11 by bolts or can be supported by a moving trolley, and the fixing frame 411 can be driven by the moving trolley to move in the length direction of the steel bar cage in a small range, so that multiple reinforcing bars can be in a suitable welding position.

[0101] The positioning frame 412 is slidably connected to the fixing frame 411, the top of the positioning frame 412 is provided with a positioning groove, the positioning groove penetrates through along the discharging direction of the steel bar cage, the positioning rod 413 is arranged on one side of the positioning frame 412 along the discharging direction of the steel bar cage, the upper part of the positioning rod 413 protrudes from the positioning groove, the positioning rod 413 and the positioning groove jointly form a positioning space for accommodating the reinforcing bar, the positioning rod 413 is connected with the positioning frame 412 through a horizontal hinge shaft, and the torsional spring is arranged on the hinge shaft of the positioning rod 413 and the positioning frame 412, and the torsional spring is used to provide a pre-tightening force for rotating the positioning rod 413 to abut against the positioning frame 412. The third driving member 414 is arranged on the fixing frame 411 and is used to drive the positioning frame 412 to ascend and descend.

[0102] In the embodiment, the top of the positioning frame 412 is provided with the positioning groove, the cross section of the positioning groove can be V-shaped or arc-shaped, and the curvature radius thereof is slightly larger than the radius of the reinforcing bar, so as to stably support the reinforcing bar. The shape of the positioning rod 413 is rod-shaped or block-shaped, and the height of the protruding part thereof should be able to effectively block the reinforcing bar from falling. The hinge shaft is installed on the side plate of the positioning frame 412 through bearings or shaft sleeves at both ends. The torsional spring provides a moment for keeping the positioning rod 413 vertical or slightly inclined to the feeding side, so as to facilitate the positioning rod 413 to receive the reinforcing bar transferred from the manufacturing unit 43, stably clamp the reinforcing bar, and ensure that the reinforcing bar is in a correct posture during welding.

[0103] When the reinforcing bars are welded with the main bars, the cage assembly 50 drives the steel bar cage to move out of the material, at this time the reinforcing bars can push the positioning rod 413 to overcome the torsional spring force to rotate, so that the reinforcing bars are separated from the corresponding positioning groove to avoid interference. The third driving member 414 can be a cylinder, a hydraulic cylinder or a servo electric cylinder, the cylinder body is fixed on the fixed frame 411, and the piston rod is connected with the positioning frame 412.

[0104] The bracket 41 provided by the embodiment serves as a reinforcing bar temporary storage and positioning mechanism. The positioning space formed by the positioning groove and the positioning rod 413 can reliably receive and temporarily fix the annular reinforcing bars, preventing the reinforcing bars from moving or falling during storage or welding. The hinge connection of the positioning rod 413 and the torsional spring design enable the reinforcing bars to avoid interference when the reinforcing bars move with the main bars, ensuring smooth discharge. The structure and installation method of the torsional spring are prior art, which will not be described here.

[0105] Please refer to Figure 5 In some possible embodiments, the reinforcing bar feeding assembly 40 further includes a supporting unit 44 connected with the rack 11. The supporting unit 44 is annular and located in the same radial plane as the pressing rod. The outer diameter of the supporting unit 44 is smaller than the inner diameter of the steel bar cage.

[0106] The supporting shaft of the storage rack 31 can be designed to be detachable, which facilitates the replacement of the reinforcing bar reel. In the guide mechanism 32, the gap between the two guide wheels of each guide wheel set can be designed to be adjustable to accommodate reinforcing bars of different diameters and exert a certain clamping force to prevent the reinforcing bars from loosening.

[0107] The function of the straightening mechanism 33 is to eliminate the bending stress generated by the coil. The straightening mechanism 33 can be a hollow steel pipe through which the reinforcing bar passes. The reinforcing bar is simply straightened by the inner hole of the hollow steel pipe. After passing through the straightening mechanism 33, the reinforcing bar is overlapped on the main bar. With the movement and rotation of the main bar, the reinforcing bar is spirally wound on the main bar. The reinforcing bar welding unit 12 welds the reinforcing bar with the main bar. Alternatively, the straightening mechanism 33 can also be an existing roller straightening machine.

[0108] Please refer to Figure 11 In some possible embodiments, the reinforcing bar feeding assembly 40 further includes a supporting unit 44 connected with the rack 11. The supporting unit 44 is annular and located in the same radial plane as the pressing rod. The outer diameter of the supporting unit 44 is smaller than the inner diameter of the steel bar cage.

[0109] The support unit 44 in this embodiment can be a separate annular support connected to the rack 11 by several legs, or it can be composed of multiple circumferentially distributed arc-shaped support blocks or support rollers. Its outer diameter is smaller than the design inner diameter of the reinforcement cage by a certain amount (for example, 50-100 mm), ensuring that it does not interfere with the rotation and axial movement of the reinforcement cage. The function of the support unit 44 is to provide auxiliary support to the main reinforcement from the inside during the process of the reinforcing bar being jacked up by the bracket 41 and radially extruded by the press rod, preventing the multiple main reinforcement from collapsing inward or deforming excessively under the radial extrusion force, ensuring that the reinforcing bar can be uniformly and tightly in contact with all the main reinforcement, thereby improving the positioning accuracy and welding quality of the welding.

[0110] By setting the internal annular support unit 44, a stable internal support reference is provided for the main reinforcement during the installation of the reinforcing bar, reducing the risk of overall or partial inward deformation of the main reinforcement skeleton caused by the radial extrusion force applied by the cage press rod, ensuring that the annular reinforcing bar can be accurately extruded and fitted to the predetermined position of all the main reinforcement, improving the positioning accuracy and fit of the reinforcing bar welding, and providing a guarantee for obtaining high-quality and high-strength welding points.

[0111] Please refer to Figure 12 and Figure 13 In some possible embodiments, the main reinforcement feeding assembly 20 includes a distributor 21 and two feeding units 22. The distributor 21 is in the shape of a cylinder coaxial with the welding channel, and is rotationally connected to the rack 11. One end of the distributor 21 is located at the feeding side of the welding channel, and the other end extends into the welding channel. The distributor 21 is provided with a plurality of distribution grooves spaced apart along the circumference thereof, each of which is used to accommodate a main reinforcement. The two feeding units 22 are oppositely arranged on the two sides of the distributor 21, and are respectively used to store main reinforcements of different lengths. The two feeding units 22 are alternately fed, so that the long and short main reinforcements are alternately arranged as shown in Figure 3 .

[0112] The distributor 21 is a star-shaped distributor 21, which is uniformly provided with a plurality of distribution grooves on the outer periphery. The distributor 21 is rotationally connected to the rack 11 by bearings and is driven by a reduction motor to rotate intermittently or continuously. The number of distribution grooves is consistent with the number of main reinforcements 101 of the reinforcement cage (commonly 6-12), and the cross-sectional shape of the grooves is arc-shaped or V-shaped, matching the main reinforcement. The two feeding units 22 can respectively store main reinforcements of different lengths. During the rotation of the distributor 21, the two feeding units 22 alternately feed the main reinforcements into the distributor 21.

[0113] In actual production, the length of the reinforcement cage depends on the length of the main reinforcement, for example, 12m long main reinforcement can only produce 12m long reinforcement cage. When a longer reinforcement cage (such as 18m) is needed, the 18m long main reinforcement needs to be replaced, or two shorter reinforcement cages are welded together. When the reinforcement cage is lengthened by welding, the conventional welding points 100 are distributed in the same plane, as shown in Figure 2 , the torsional strength of this position is poor and is prone to deformation due to welding stress.

[0114] Unlike the above method, the two feeding units 22 are arranged on both sides of the distributor 21 in the embodiment, and the two feeding units 22 can feed main reinforcements of different lengths, so that the welding points 100 are distributed in different planes, thereby improving the torsional strength of the reinforcement cage.

[0115] Taking the production of an 18m long reinforcement cage as an example, first, a plurality of 12m and 6m long main reinforcements are prepared, and the main reinforcements are placed in the distributor 21 in two batches. The 12m long main reinforcements and the 6m long main reinforcements are placed in the distributor 21 at intervals in the first time, and the welding device is started to weld. After the length of the reinforcement cage reaches 6m, the welding is paused, and the second batch of main reinforcements is placed in the distributor 21. The sum of the main reinforcements placed in each distribution slot in two times is the same (18m). When the 6m long main reinforcement is placed in the distribution slot in the first time, the 12m long main reinforcement is placed in the second time. Conversely, when the 12m long main reinforcement is placed in the distribution slot in the first time, the 6m long main reinforcement is placed in the second time. The two main reinforcements are welded together by using the welding manipulator, and the welding points 100 are distributed as shown in Figure 4 . After the welding of the main reinforcements is completed, the device is started to normally weld, and finally an 18m long reinforcement cage can be obtained.

[0116] It can be understood that the above operation method is only one feasible example of the present application, and is not a limitation on the use method. Other feasible methods can also be used to complete the reinforcement welding operation of the reinforcement cage without deviating from the working principle of the present application.

[0117] Please refer to Figure 16 . In some possible embodiments, the feeding unit 22 comprises a feeding mechanism 221, a guide mechanism 222 and a lifting mechanism 223. The feeding mechanism 221 comprises a plurality of feeding rollers arranged at intervals along the feeding direction; the guide mechanism 222 is arranged on the side of the feeding mechanism 221 adjacent to the distributor 21, and the guide mechanism 222 comprises a plurality of guide plates arranged at intervals along the feeding direction, and one end of the guide plate adjacent to the distributor 21 is arranged obliquely downward; and the lifting mechanism 223 is arranged between two adjacent feeding rollers, and the top of the lifting mechanism 223 is provided with a lifting block, and one end of the lifting block adjacent to the distributor 21 is arranged obliquely downward.

[0118] The feeding roller is usually a motor-driven active roller, and the surface can have a texture or rubber coating to increase friction. Multiple feeding rollers form a section of the conveying plane, which can forwardly convey the main reinforcement to make it parallel to the distributor 21. The guide plate is plate-shaped or rod-shaped, the high end of which is connected with the plane of the feeding roller, and the low end points to the inlet of the distribution groove of the distributor 21, forming a smooth slope, which can guide the main reinforcement to roll into the distribution groove. The lifting mechanism 223 can be driven by a pneumatic cylinder or a hydraulic cylinder. The inclined surface of the lifting block is connected with the inclined surface of the guide plate. When feeding is needed, the lifting mechanism 223 lifts the main reinforcement from the feeding roller, so that it rolls along the inclined surface of the lifting block and the guide plate into the corresponding distribution groove, completing the feeding of the main reinforcement.

[0119] Please refer to 12 and 13. Please refer to some possible embodiments, the main reinforcement feeding assembly 20 further comprises an automatic reinforcement penetrating unit 23, which comprises a mounting frame 231, a reinforcement penetrating rod 232 and a fourth driving member 233. The mounting frame 231 is arranged at the inlet end of the distributor 21, and the mounting frame 231 is provided with a guide rail 2311 in the feeding direction; the reinforcement penetrating rod 232 is slidingly arranged in the guide rail 2311, and during the rotation of the distributor 21, the reinforcement penetrating rod 232 is coaxially and correspondingly arranged in the plurality of distribution grooves; and the fourth driving member 233 is arranged on the mounting frame 231 and is used to drive the reinforcement penetrating rod 232 to move along the guide rail 2311.

[0120] The reinforcement penetrating rod 232 is an elongated rod, and its diameter is slightly smaller than the diameter of the main reinforcement. The fourth driving member 233 can be an electric telescopic rod or other power devices capable of driving the reinforcement penetrating rod 232 to move. When the distributor 21 rotates to align one distribution groove with the feeding station, the reinforcement penetrating rod 232 penetrates from the rear of the distribution groove (the inlet side) under the action of the fourth driving member 233 and moves forward (the outlet side) until it pushes the main reinforcement located at the inlet of the distribution groove forward, so that the main reinforcement passes through the entire welding channel and reaches the vicinity of the cage assembly 50, facilitating the clamping of the cage assembly 50. After clamping is completed, the reinforcement penetrating rod 232 retreats, the distributor 21 rotates to the next groove, and the process is repeated until all the main reinforcements are penetrated and fed, realizing the complete automation of the process of penetrating the main reinforcement into the welding channel.

[0121] In the second aspect, the application provides a method for automatically welding a reinforcement cage, which uses the above-mentioned automatic reinforcement cage welding device, and on the basis of the hardware of the device, a programmable logic controller (PLC) or an industrial computer system is used to coordinate and control the components to work in the following logical order:

[0122] Initialization and feeding: according to the preset specifications of the reinforcement cage (the number, spacing, length, and winding pitch of the main reinforcement, and the position and number of the reinforcing bars), the system initializes the positions of the components. The reinforcing bar feeding assembly 40 (including the manufacturing unit 43) pre-manufactures and places multiple reinforcing bars on the corresponding axial position of the bracket 41. The initial diameter of the reinforcing bar should be greater than the diameter of the reinforcement cage, so as to ensure that the main reinforcement can smoothly penetrate.

[0123] Main reinforcement threading and clamping: The main reinforcement feeding assembly 20 acts through the steps of distribution, lifting, guiding and automatic threading, etc. to arrange multiple main reinforcements at equal intervals in a circle and make one end of the main reinforcements pass through the welding channel and the inner ring of all the reinforcing bars to be welded, and finally be firmly clamped by the chuck of the pulling cage assembly 50.

[0124] Winding reinforcement welding and spiral welding: The winding reinforcement feeding assembly 30 sends the straightened end of the winding reinforcement to the starting welding point, and the initial end is welded firmly on one main reinforcement by manual spot welding or through the winding reinforcement welding unit 12. The pulling cage assembly 50 is started to move axially at a set speed while rotating while clamping the main reinforcement. The winding reinforcement is continuously spirally wound onto the main reinforcement framework under the action of the pulling force and the rotation of the main reinforcement. The winding reinforcement welding unit 12 adopts resistance pressure welding or welding robot, which can automatically weld at each intersection contact point of the main reinforcement and the winding reinforcement.

[0125] Intermittent welding of reinforcing bars: During the continuous feeding and winding reinforcement welding of the reinforcement cage, when the pulling cage assembly 50 drags the reinforcement cage to move to the preset reinforcing bar welding position (i.e. the corresponding axial position of a bracket 41), the pulling cage assembly 50 pauses the axial movement (or keeps a very low speed). At this time, the bracket 41 at this position rises under the action of the third driving member 414, and multiple pressing rods are synchronously extended radially to the center under the action of the driving, and jointly act with the rising bracket 41 to tightly clamp the annular reinforcing bar on all the main reinforcements arranged in a circle. The reinforcing bar welding unit 13 (which can be multiple welding guns operating simultaneously) immediately acts to weld the reinforcing bar and the contact point of each main reinforcement firmly. After welding, the pressing rods retract and the bracket 41 descends to reset. The pulling cage assembly 50 continues to move axially and rotate to perform the welding of the next section of winding reinforcement until it reaches the next reinforcing bar welding position, and the above process is repeated.

[0126] Circulation and finished product discharging: The above process is repeated until the entire reinforcement cage reaches the predetermined length and all reinforcing bars are welded. The pulling cage assembly 50 completely drags the finished product reinforcement cage out, and the reinforcement cage is transferred to the discharging guide frame 60 to complete the welding and discharging of the reinforcement cage.

[0127] The welding method provided by the embodiment fully utilizes the functions of the automatic welding device, and realizes the full-automatic and continuous production of the reinforcement cage from the main reinforcement feeding, threading, winding reinforcement spiral winding welding to the automatic positioning and welding of the reinforcing bar. The method ingeniously embeds the welding of the reinforcing bar into the continuous winding reinforcement welding process, realizes the efficient production rhythm of "pulling cage, winding and reinforcing simultaneously" through the intermittent movement of the pulling cage assembly 50 and the coordinated action of each station. The whole process is closely connected and has high automation, which greatly improves the production efficiency, guarantees the consistency of product quality, significantly reduces the dependence on manual work and production cost, and is an effective solution for the upgrading of the reinforcement cage manufacturing technology to intelligent and complete production line.

[0128] It should be noted that the steel reinforcement cage automatic welding device provided by the embodiments of the present application has multiple moving / performing components when working, such as welding machines, cylinders, hydraulic cylinders, motor transmission mechanisms, scissor lifts, electric telescopic rods, position sensors, multi-axis manipulators, tool clamps, etc. The work of the above-mentioned devices can be automatically controlled by a controller, or can be manually controlled through a control panel.

[0129] It should be noted that the core innovation of the technical solution of the present application lies in the innovative mechanical structure, spatial layout and connection and cooperation relationship between each physical component, aiming to solve the problem of "unable to automatically weld reinforcing bars" in the background technology through structural integration and optimization. As for the specific controller used to coordinate the work of these components and its control scheme, such as programmable logic controller (PLC), industrial computer (IPC) or embedded microcontroller, and the specific control algorithm it runs, all belong to the existing mature technology widely known in the technical field.

[0130] After knowing the hardware structure scheme disclosed in the present application, those skilled in the art can routinely select or combine suitable controller models according to specific performance indicators and cost requirements, design corresponding control logic circuits and write control programs to realize the functions of starting and stopping of moving components, power regulation, and acquisition and processing of sensor signals. Therefore, even if the present application does not describe the specific details of the internal circuit, program code, etc. of the controller, it does not affect the understanding, reproduction and implementation of the hardware structure scheme itself by those skilled in the art, and the integrity of the technical solution is not affected.

[0131] It can be understood that the parts in the above embodiments can be freely combined or deleted to form different combined embodiments, and the specific content of each combined embodiment will not be described here. After the above description, it can be considered that the present application has described each combined embodiment and can support different combined embodiments.

[0132] The above only describes the preferred embodiments of the present application and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Reinforcement cage automatic welding device, characterized in that, The application relates to a welding assembly (10) comprising a rack (11) having a welding channel penetrating through the rack (11) along the axial direction of a steel cage, a stirrup welding unit (12) and a reinforcing bar welding unit (13) located at the discharging side of the welding channel, a main bar feeding assembly (20) located at the feeding side of the welding channel and used for feeding main bars, a stirrup feeding assembly (30) located at the discharging side of the welding channel and used for feeding stirrups to the welding position of the stirrup welding unit (12), a reinforcing bar feeding assembly (40) comprising a bracket (41) located below the welding position of the reinforcing bar welding unit (13) and a plurality of the brackets (41) sequentially arranged along the axial direction of the steel cage, the bracket (41) being capable of ascending and descending along the vertical direction, and the extrusion unit (42) comprising a plurality of pressing rods arranged along the circumferential direction of the steel cage, a plurality of the pressing rods and the corresponding bracket (41) forming a reinforcing bar accommodating space, and the pressing rod being capable of extending and retracting along the radial direction of the steel cage, and a cage pulling assembly (50) located at the discharging side of the welding channel and capable of moving along the axial direction of the steel cage and rotating the steel cage to wind the stirrups. The bracket (41) comprises a fixed frame (411) located below the welding position of the reinforcing bar welding unit (13), a positioning frame (412) slidingly fitted to the fixed frame (411), the top of the positioning frame (412) being provided with a positioning groove penetrating through along the discharging direction of the steel cage, a positioning rod (413) located at one side of the positioning frame (412) along the discharging direction of the steel cage, the upper portion of the positioning rod (413) protruding from the positioning groove, the positioning rod (413) and the positioning groove jointly forming a positioning space for accommodating reinforcing bars, the positioning rod (413) being connected to the positioning frame (412) through a horizontal hinge shaft, a torsional spring located at the hinge shaft of the positioning rod (413) and the positioning frame (412), the torsional spring being used for providing a pre-tightening force for rotating the positioning rod (413) to abut against the positioning frame (412), and a third driving member (414) located at the fixed frame (411) and used for driving the positioning frame (412) to ascend and descend. When welding reinforcing bars, the extrusion unit (42) is used for applying a radial extrusion force to the reinforcing bars to make the reinforcing bars shrink inwardly to contact the main bars, and then the reinforcing bars and the main bars are welded and fixed by the reinforcing bar welding unit (13). The reinforcing bar feeding assembly (40) further comprises a manufacturing unit (43), the manufacturing unit (43) comprising a positioning plate (431) having a guide groove for accommodating steel bars, the guide groove being linear. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The reinforcing cage automatic welding apparatus according to claim 1, characterized in that, ​ ​ The bending mechanism (432) comprises a material loading table (4321), two positioning wheels (4322) arranged at intervals along the extension direction of the guide groove on the material loading table (4321), a movable wheel (4323) arranged between the two positioning wheels (4322), and a first driving member; a bending channel for the steel bar to pass through is formed between the positioning wheel (4322) and the movable wheel (4323), and the first driving member is used to drive the movable wheel (4323) to move in a direction perpendicular to the connecting line of the two positioning wheels (4322) and parallel to the table surface of the material loading table (4321); and The cutting mechanism (433) is arranged on the material loading table (4321) and is used to cut the steel bar.

3. The reinforcing cage automatic welding apparatus according to claim 2, characterized in that, The cutting mechanism (433) comprises: A hydraulic shear (4331) having two shear blades capable of relative displacement, a shear groove being formed between the two shear blades, and the opening of the shear groove facing upward; the hydraulic shear (4331) has a avoiding position lower than the table surface of the material loading table (4321) and a shearing position higher than the table surface of the material loading table (4321); and A second driving member (4332) arranged on the material loading table (4321) is used to drive the hydraulic shear (4331) to move between the shearing position and the avoiding position.

4. The reinforcing cage automatic welding apparatus according to claim 1, characterized by The steel bar winding feeding assembly (30) comprises: A storage rack (31) having a support shaft for winding the steel bar; A guide mechanism (32) arranged on the discharge side of the storage rack (31), the guide mechanism (32) comprising a plurality of groups of guide wheels arranged at intervals along the discharge direction of the steel bar, each group of guide wheels comprising two guide wheels arranged oppositely above and below; and A straightening mechanism (33) arranged between the guide mechanism (32) and the steel bar welding unit (12).

5. The reinforcing cage automatic welding apparatus according to claim 1, characterized in that, The reinforcing bar feeding assembly (40) further comprises a support unit (44) connected with the rack (11), the support unit (44) is annular and located in the same radial plane as the pressing rod, and the outer diameter of the support unit (44) is smaller than the inner diameter of the steel bar cage.

6. The reinforcing cage automatic welding apparatus according to claim 1, characterized by The main bar feeding assembly (20) comprises: A distributor (21) in the shape of a cylinder coaxial with the welding channel, the distributor (21) being rotationally connected with the rack (11), one end of the distributor (21) being located on the feeding side of the welding channel and the other end extending into the welding channel, a plurality of distribution grooves being arranged at intervals along the circumferential direction of the distributor (21), and each distribution groove being used to accommodate one main bar; and Two feeding units (22) oppositely arranged on the two sides of the distributor (21), the two feeding units (22) being respectively used to store main bars of different lengths.

7. The reinforcing cage automatic welding apparatus according to claim 6, characterized in that, The feeding unit (22) comprises: A feeding mechanism (221) comprising a plurality of feeding rollers arranged at intervals along the feeding direction; A guide mechanism (222) arranged on one side of the feeding mechanism (221) adjacent to the distributor (21), the guide mechanism (222) comprising a plurality of guide plates arranged at intervals along the feeding direction, and one end of the guide plate adjacent to the distributor (21) being arranged obliquely downward; and A lifting mechanism (223) is arranged between two adjacent upper feeding rollers, and a lifting block is arranged at the top of the lifting mechanism (223), and the lifting block is arranged obliquely downward near one end of the distributor (21).

8. The reinforcing cage automatic welding apparatus according to claim 6, characterized in that, The main reinforcement feeding assembly (20) further comprises an automatic reinforcement threading unit (23), and the automatic reinforcement threading unit (23) comprises: A mounting frame (231) is arranged at the feeding end of the distributor (21), and a guide rail (2311) is arranged on the mounting frame (231) in the feeding direction; A reinforcement threading rod (232) is slidably arranged on the guide rail (2311), and the reinforcement threading rod (232) is coaxially arranged corresponding to a plurality of distribution grooves during rotation of the distributor (21); and A fourth driving member (233) is arranged on the mounting frame (231) and is used for driving the reinforcement threading rod (232) to move along the guide rail (2311).

9. A method of automatic welding of reinforcement cages, characterised in that, The steel reinforcement cage automatic welding device comprises the following steps: The reinforcing bars are placed into corresponding holders (41) through the reinforcing bar feeding assembly (40), so that a plurality of reinforcing bars are arranged at intervals along the axial direction of the steel reinforcement cage; A plurality of main reinforcements are fed into the welding channel through the main reinforcement feeding assembly (20), one end of the main reinforcement passes through the inner ring of the welding channel and the reinforcing bar, and then is clamped and fixed by the pulling cage assembly (50), and the plurality of main reinforcements are arranged at equal intervals in the circumferential direction; One end of the winding reinforcement is welded and fixed on the main reinforcement through the winding reinforcement feeding assembly (30); The pulling cage assembly (50) rotates while feeding the main reinforcement, so that the winding reinforcement is spirally wound on the main reinforcement, and the main reinforcement and the winding reinforcement are welded and fixed through the winding reinforcement welding unit (12); When the reinforcing bar needs to be welded, the holder (41) is raised and the extrusion unit (42) is extruded in the radial direction, so that the inner ring of the reinforcing bar abuts against the main reinforcement, and then the reinforcing bar and the main reinforcement are welded and fixed through the reinforcing bar welding unit (13), and finally the extrusion unit (42) is reset; During the welding of the steel reinforcement cage, the pulling cage assembly (50) feeds out a length of the steel reinforcement cage each time, and the reinforcing bar feeding assembly (40) acts once to weld a plurality of reinforcing bars at intervals to different positions of the main reinforcement.

Images