A multi-degree-of-freedom welding gun and welding method for cross steel

Abstract

The present application relates to the technical field of positioning welding, in particular to a multi-degree-of-freedom welding gun for a cross-shaped steel bar and a welding method, the multi-degree-of-freedom welding gun comprising an X-axis moving mechanism, a lifting mechanism and a welding module; the welding module is arranged on the lifting mechanism, and the X-axis moving mechanism drives the lifting mechanism and the welding module to realize transverse reciprocating motion; the welding module comprises a welding workbench, the welding workbench comprises at least one group of Y-axis moving mechanisms, and two groups of welding gun mechanisms are arranged on the Y-axis moving mechanisms. The present application can realize the welding of three-layer cross-shaped steel bar mesh through the arrangement of multiple spacing adjusting mechanisms, and can be suitable for the welding of different models of steel bars by adjusting the welding gun structure and the spacing between the welding guns, so that the present application has a wide range of applications and high welding efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of positioning welding, in particular to a multi-degree-of-freedom welding gun for a cross-shaped steel bar and a welding method. BACKGROUND

[0002] The steel bar mesh of the box girder is welded after being spliced into a cross shape by long bars, short bars and medium-length bars; however, the spacing between the steel bars is different according to the different types; in the prior art, the steel bars are placed in positioning grooves, and then welded by a welding structure.

[0003] For example, in the Chinese utility model patent with the authorization announcement number CN219426026U and the authorization announcement date of 2023.07.28, a kind of open cross positioning bar welding equipment is disclosed.The open cross positioning bar welding equipment includes base;Positioning structure, the positioning structure is fixed to one end of the surface of the base;Welding robot, the welding robot is installed on the other end of the surface of the base;First limiting structure, the first limiting structure is installed on the side wall of the placing table;Deslagging structure, the deslagging structure is installed on one end of the bottom plate surface;Collecting box, the collecting box is installed on the other end of the bottom plate;Second limiting structure, the second limiting structure is installed on the top surface of the placing table.But the structure needs to set positioning grooves of each type to adapt to the steel bar welding of different types, the scope of application is small and the welding efficiency is low.And the steel bar mesh includes three layers of long bars, short bars and medium-length bars, which is easy to deviate during welding.

[0004] Therefore, in view of the shortcomings of the prior art, there is an urgent need for a multi-degree-of-freedom welding gun for a cross-shaped steel bar and a welding method. SUMMARY

[0005] To avoid the above-mentioned problems existing in the prior art, the purpose of the present application is to provide a multi-degree-of-freedom welding gun for a cross-shaped steel bar and a welding method.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a multi-degree-of-freedom welding gun for a cross-shaped steel bar, comprising an X-axis moving mechanism, a lifting mechanism and a welding module; the welding module is arranged on the lifting mechanism, and the X-axis moving mechanism drives the lifting mechanism and the welding module to realize horizontal reciprocating motion.

[0007] The welding module comprises a welding workbench, the welding workbench comprises at least one group of Y-axis moving mechanisms, and two groups of welding gun mechanisms are arranged on the Y-axis moving mechanisms.

[0008] The present application further provides that the welding workbench further comprises a main frame, the main frame is connected to the lifting mechanism, and the Y-axis moving mechanisms are arranged inside the main frame.

[0009] The application is further provided that the Y-axis moving mechanism comprises a Y-axis linear guide rail, and two groups of Y-axis sliders are arranged on the Y-axis linear guide rail, and the welding gun mechanism is arranged on the Y-axis sliders respectively.

[0010] The application is further provided that the welding gun mechanism comprises a welding gun guide rail, a fixed block, a welding slider, a driving mechanism and a welding gun, the welding gun comprises a first welding gun and a second welding gun; the fixed block and the welding slider are arranged on the welding gun guide rail, one end of the fixed block is provided with the first welding gun, and the other end of the fixed block is provided with the driving mechanism; one end of the welding slider is provided with the second welding gun, and the other end of the welding slider is connected to the extension end of the driving mechanism.

[0011] The application is further provided that the driving mechanism is any one of an electric push rod or a pneumatic cylinder.

[0012] The application is further provided that the welding gun guide rail is arranged on the Y-axis slider, and the length direction of the welding gun guide rail is perpendicular to the length direction of the Y-axis slider.

[0013] The application is further provided that the welding gun mechanism further comprises a spring pressing structure, comprising a connecting plate, a pressing plate and a spring, the connecting plate is arranged at the bottom of the Y-axis linear guide rail; the connecting plate and the two ends of the pressing plate are connected by the spring.

[0014] The application is further provided that the welding module further comprises a welding wire reel assembly, the welding wire reel assembly comprises a plurality of welding wire reels, and the welding wire on the welding wire reel is connected to the welding gun.

[0015] The application is further provided that the multi-degree-of-freedom welding gun for the cross-shaped steel bar further comprises a drag chain, one end of the drag chain is connected to the welding wire reel assembly, and the other end of the drag chain is connected to the X-axis moving mechanism.

[0016] The application also relates to a welding method of the multi-degree-of-freedom welding gun for the cross-shaped steel bar.

[0017] S1: the X-axis moving mechanism drives the lifting mechanism and the welding module to move to a specified position in the welding area along the X-axis direction;

[0018] S2: a steel bar tray is arranged at the specified position, two short steel bars and two middle-long steel bars are placed into a first cross-shaped structure through steel bar placing grooves on the steel bar tray, and two long steel bars are arranged at the two ends of the middle-long steel bars respectively to form a second cross-shaped structure with the middle-long steel bars.

[0019] S3: the distance between the two groups of Y-axis sliders on the Y-axis linear guide rail is adjusted according to the spacing between the short steel bars through a linear motor, and the spacing between the first welding gun and the second welding gun is adjusted according to the spacing between the middle-long steel bars through the driving mechanism.

[0020] S4: the lifting mechanism drives the welding module to descend, the steel bars of the first cross-shaped structure are fixed by the spring pressing structure, and the welding points of the cross-shaped structure are welded by the welding guns in the two groups of welding gun mechanisms;

[0021] S5: the lifting mechanism drives the welding module to ascend, the distance between the two groups of Y-axis sliders on the Y-axis linear guide rail is adjusted by the linear motor according to the length of the middle and long steel bars;

[0022] S6: the lifting mechanism drives the welding module to descend, the steel bars of the second cross-shaped structure are fixed by the spring pressing structure, and the welding points of the cross-shaped structure are welded by the welding guns in the two groups of welding gun mechanisms;

[0023] S7: after the welding is completed, the lifting mechanism drives the welding module to ascend, and then the X-axis moving mechanism is moved to the specified position of the next welding area.

[0024] Therefore, the beneficial effects of the above technical solutions of the present application are as follows:

[0025] The present application can realize the welding of three-layer cross-shaped steel mesh through the multiple spacing adjustment mechanisms, and can be suitable for different types of steel welding by adjusting the welding gun structure and the spacing between the welding guns, so that the application range is wide and the welding efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0027] Fig. 1 The overall structure of the multi-degree-of-freedom welding gun is shown in the schematic view.

[0028] Fig. 2 The structure of the welding workbench is shown in the schematic view.

[0029] Fig. 3 The structure of the Y-axis moving mechanism is shown in the schematic view.

[0030] In the drawings, the meanings of the various reference signs are as follows:

[0031] 100. X-axis moving mechanism; 200. Lifting mechanism; 300. Welding module; 310. Welding wire spool assembly; 320. Welding worktable; 321. Main frame; 322. Y-axis linear guide; 323. First welding gun; 324. Second welding gun; 325. Fixing block; 326. Welding slider; 327. Drive mechanism; 328. Welding gun guide rail; 331. Connecting plate; 332. Spring; 333. Pressure plate; 400. Cable chain. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of the present invention, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of the present invention.

[0033] Furthermore, the directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0034] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0035] Example 1:

[0036] like Figs. 1-3 As shown in the preferred embodiment of the present invention, a multi-degree-of-freedom welding gun for grid-shaped reinforcing bars includes an X-axis moving mechanism 100, a lifting mechanism 200, and a welding module 300; the welding module 300 is disposed on the lifting mechanism 200, and the X-axis moving mechanism 100 drives the lifting mechanism 200 and the welding module 300 to achieve lateral reciprocating motion;

[0037] The welding module 300 includes a welding wire spool assembly 310, which includes multiple welding wire spools, and the welding wires on the welding wire spools are connected to the welding gun below.

[0038] The X-axis moving mechanism 100 can use a linear guide or similar structure to achieve lateral reciprocating motion. An X-axis slider is provided on the linear guide, and a wire spool assembly 310 is provided on the X-axis slider. The wire spool assembly is also connected to the lifting mechanism 200.

[0039] The multi-degree-of-freedom welding gun for crisscross rebars also includes a cable carrier 400, one end of which is connected to the wire spool assembly 310, and the other end is connected to the X-axis moving mechanism 100. The cable carrier 400 is used to pull and protect built-in cables, oil pipes, or gas pipes.

[0040] The welding module 300 comprises a welding workbench 320, which comprises at least one set of Y-axis moving mechanism, and two sets of welding gun mechanisms are arranged on the Y-axis moving mechanism.

[0041] The welding workbench further comprises a main frame 321, which is connected with the lifting mechanism 200, and the Y-axis moving mechanism is arranged inside the main frame 321.

[0042] The lifting mechanism 200 can adopt a conventional lifting structure such as a linear guide rail or an electric push rod.

[0043] The Y-axis moving mechanism comprises a Y-axis linear guide rail 322, two sets of Y-axis sliders are arranged on the Y-axis linear guide rail 322, and the welding gun mechanisms are arranged on the Y-axis sliders, respectively.

[0044] The welding gun mechanism comprises a welding gun guide rail 328, a fixed block 325, a welding slider 326, a driving mechanism 327 and a welding gun, the welding gun comprises a first welding gun 323 and a second welding gun 324, the fixed block 325 and the welding slider 326 are arranged on the welding gun guide rail 328, one end of the fixed block 325 is installed with the first welding gun 323, the other end of the fixed block 325 is installed with the driving mechanism 327, one end of the welding slider 326 is installed with the second welding gun 324, and the other end of the welding slider 326 is connected with an extension end of the driving mechanism 327, and the driving mechanism 327 is any one of an electric push rod or a pneumatic cylinder.

[0045] The welding gun guide rail 328 is arranged on the Y-axis slider, and the length direction of the welding gun guide rail 328 is perpendicular to the length direction of the Y-axis slider.

[0046] The welding gun mechanism further comprises a spring pressing structure, which comprises a connecting plate 331, a pressing plate 333 and a spring 332, the connecting plate 331 is arranged at the bottom of the Y-axis linear guide rail 322, and the two ends of the connecting plate 331 and the pressing plate 333 are connected through the spring 332.

[0047] Embodiment 2

[0048] The application also relates to a welding method for the multi-degree-of-freedom welding gun for the cross-shaped steel bar, which is used in cooperation with the multi-degree-of-freedom welding gun for the cross-shaped steel bar in embodiment 1 and comprises the following steps.

[0049] S1: The X-axis moving mechanism 100 drives the lifting mechanism 200 and the welding module 300 to move to a specified position in the welding area along the X-axis direction.

[0050] S2: The steel bar tray is arranged at the specified position, two short steel bars and two long steel bars are placed into a first cross-shaped structure through the steel bar placing slots on the steel bar tray, and one long steel bar is arranged at the two ends of the long steel bar to form a second cross-shaped structure with the long steel bar;

[0051] S3: The distance between the two groups of Y-axis sliders on the Y-axis linear guide rail 322 is adjusted by the linear motor according to the short steel bar spacing, and the distance between the first welding gun 323 and the second welding gun 324 is adjusted by the driving mechanism 327 according to the long steel bar spacing;

[0052] S4: The lifting mechanism 200 drives the welding module 300 to descend, the steel bars of the first cross-shaped structure are fixed by the spring pressing structure, and the welding points of the cross-shaped structure are welded by the welding guns in the two groups of welding gun mechanisms;

[0053] S5: The lifting mechanism 200 drives the welding module 300 to ascend, and the distance between the two groups of Y-axis sliders on the Y-axis linear guide rail 322 is adjusted by the linear motor according to the length of the long steel bar;

[0054] S6: The lifting mechanism 200 drives the welding module 300 to descend, the steel bars of the second cross-shaped structure are fixed by the spring pressing structure, and the welding points of the cross-shaped structure are welded by the welding guns in the two groups of welding gun mechanisms;

[0055] S7: After the welding is completed, the lifting mechanism 200 drives the welding module 300 to ascend, and then the X-axis moving mechanism moves 100 to the specified position of the next welding area.

[0056] As described above, the present application realizes the welding of three-layer cross-shaped steel bar mesh through the arrangement of multiple spacing adjustment mechanisms, and is suitable for different models of steel bar welding by adjusting the welding gun structure and the distance between the welding guns, so that the application range is wide and the welding efficiency is high.

[0057] The above description is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application shall be considered as falling within the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A multi-degree-of-freedom welding gun for lattice-shaped reinforcing bars, characterized in that, It includes an X-axis moving mechanism, a lifting mechanism, and a welding module; the welding module is mounted on the lifting mechanism, and the X-axis moving mechanism drives the lifting mechanism and the welding module to achieve lateral reciprocating motion. The welding module includes a welding worktable, which includes at least one Y-axis moving mechanism, and two welding gun mechanisms are provided on the Y-axis moving mechanism. The Y-axis moving mechanism includes a Y-axis linear guide rail, on which two sets of Y-axis sliders are arranged. The welding gun mechanism is respectively arranged on the Y-axis sliders. The welding gun mechanism includes a welding gun guide rail, a fixing block, a welding slider, a driving mechanism, and a welding gun. The welding gun includes a first welding gun and a second welding gun. The fixing block and the welding slider are arranged on the welding gun guide rail. The first welding gun is installed at one end of the fixing block, and the driving mechanism is installed at the other end of the fixing block. The second welding gun is installed at one end of the welding slider, and the other end is connected to the extended end of the driving mechanism. The welding gun guide rail is mounted on the Y-axis slider, and the length direction of the welding gun guide rail is perpendicular to the length direction of the Y-axis slider.

2. The multi-degree-of-freedom welding gun for grid-shaped reinforcing bars according to claim 1, characterized in that, The welding workbench also includes a main frame, which is connected to the lifting mechanism, and the Y-axis moving mechanism is located inside the main frame.

3. The multi-degree-of-freedom welding gun for grid-shaped reinforcing bars according to claim 1, characterized in that, The drive mechanism is either an electric actuator or a cylinder.

4. The multi-degree-of-freedom welding gun for grid-shaped reinforcing bars according to claim 1, characterized in that, The welding gun mechanism also includes a spring clamping structure, which includes a connecting plate, a clamping plate, and a spring. The connecting plate is located at the bottom of the Y-axis linear guide rail. The two ends of the connecting plate and the clamping plate are connected by a spring.

5. The multi-degree-of-freedom welding gun for grid-shaped reinforcing bars according to claim 1, characterized in that, The welding module also includes a welding wire spool assembly, which comprises multiple welding wire spools, and the welding wires on the welding wire spools are connected to the welding gun.

6. The multi-degree-of-freedom welding gun for grid-shaped reinforcing bars according to claim 5, characterized in that, The multi-degree-of-freedom welding gun for grid-shaped reinforcing bars also includes a drag chain, one end of which is connected to the welding wire spool assembly, and the other end is connected to the X-axis moving mechanism.

7. A welding method for a multi-degree-of-freedom welding gun for cross-shaped reinforcing bars, characterized in that, Used in conjunction with any one of the multi-degree-of-freedom welding guns for crisscross reinforcing bars as claimed in claims 1-6 Includes the following steps: S1: The X-axis moving mechanism drives the lifting mechanism and welding module to move along the X-axis to the designated position in the welding area; S2: A steel bar tray is set at a designated location. Two short bars and two medium long bars are arranged into a first grid structure through the steel bar placement groove on the steel bar tray. A long bar is set at each end of the medium long bars to form a second grid structure with the medium long bars. S3: Adjust the distance between the two sets of Y-axis sliders on the Y-axis linear guide rail according to the short rib spacing via a linear motor, and adjust the distance between the first welding gun and the second welding gun according to the medium and long rib spacing via a drive mechanism. S4: The lifting mechanism drives the welding module to descend, and the steel bars of the first grid structure are fixed by the spring clamping structure. The welding guns in the two sets of welding gun mechanisms weld the welding points of the grid structure. S5: The lifting mechanism drives the welding module to rise. According to the length of the middle and long ribs, the distance between the two sets of Y-axis sliders on the Y-axis linear guide is adjusted by the linear motor. S6: The lifting mechanism drives the welding module to descend, and the steel bars of the second grid structure are fixed by the spring clamping structure. The welding guns in the two sets of welding gun mechanisms weld the welding points of the grid structure. S7: After welding is completed, the lifting mechanism drives the welding module to rise, and then moves it to the designated position of the next welding area through the X-axis moving mechanism.

Images