Multi-degree-of-freedom welding gun and welding method for #-shaped steel bars

Abstract

The invention relates to the technical field of positioning welding, in particular to a multi-degree-of-freedom welding gun and welding method for #-shaped steel bars, and the multi-degree-of-freedom welding gun comprises 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 achieve 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. By arranging the multiple interval adjusting mechanisms, welding of three layers of #-shaped steel bar meshes can be achieved, by adjusting the welding gun structures and the intervals between the welding guns, the welding device can be suitable for welding of steel bars of different models, the application range is wide, and the welding efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of positioning welding, in particular to a multi-degree-of-freedom welding gun and a welding method for cross-shaped steel bars. Background Art

[0002] The box girder steel mesh is made of long bars, short bars and medium-long bars spliced ​​into a crisscross shape and then welded together; however, the spacing between each steel bar varies depending on the model; in the existing technology, the steel bars are generally placed in positioning grooves and then welded at fixed points by a welding structure.

[0003] For example, in the Chinese utility model patent with authorization announcement number CN219426026U and authorization announcement date 2023.07.28, a device for welding open tic-tac-toe positioning ribs is disclosed. The device for welding open tic-tac-toe positioning ribs includes a base; a positioning structure, the positioning structure is fixed to one end of the base surface; a welding robot, the welding robot is installed at the other end of the base surface; a first limiting structure, the first limiting structure is installed on the side wall of the placement table; a slag cleaning structure, the slag cleaning structure is installed at one end of the bottom plate surface; a collection box, the collection box is installed at the other end of the bottom plate; a second limiting structure, the second limiting structure is installed on the top surface of the placement table. However, this structure requires the provision of positioning grooves of various models to adapt to the welding of different types of steel bars, and has a small scope of application and low welding efficiency. In addition, since the steel mesh includes three layers of steel bars, namely long bars, short bars, and medium-long bars, it is easy to deviate during the welding process.

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

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

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a multi-degree-of-freedom welding gun for cross-shaped steel bars, 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 lateral reciprocating motion;

[0007] The welding module includes a welding workbench, and the welding workbench includes at least one set of Y-axis moving mechanisms. Two sets of welding gun mechanisms are arranged on the Y-axis moving mechanisms.

[0008] The present invention is further configured such that the welding workbench further includes a main frame, the main frame is connected to the lifting mechanism, and the Y-axis moving mechanism is arranged inside the main frame.

[0009] The present invention is further configured such that the Y-axis moving mechanism includes a Y-axis linear guide rail, two groups of Y-axis sliders are provided on the Y-axis linear guide rail, and the welding gun mechanisms are respectively provided on the Y-axis sliders.

[0010] The present invention is further configured as follows: the welding gun mechanism includes a welding gun guide rail, a fixed block, a welding slider, a driving mechanism and a welding gun, and the welding gun includes a first welding gun and a second welding gun; the fixed block and the welding slider are arranged on the welding gun guide rail, the first welding gun is installed on one end of the fixed block, and the driving mechanism is installed on the other end of the fixed block; the second welding gun is installed on one end of the welding slider, and the other end is connected to the protruding end of the driving mechanism.

[0011] The present invention is further configured such that the driving mechanism is any one of an electric push rod and a pneumatic cylinder.

[0012] The present invention is further configured such 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 present invention is further configured such that the welding gun mechanism also includes a spring clamping structure, including a connecting plate, a clamping plate and a spring, wherein the connecting plate is arranged 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.

[0014] The present invention is further configured such that the welding module further includes a welding wire reel assembly, the welding wire reel assembly includes a plurality of welding wire reels, and the welding wires on the welding wire reels are connected to the welding gun.

[0015] The present invention is further configured such that the multi-degree-of-freedom welding gun for the cross-shaped steel bars further includes a drag chain, one end of the drag chain is connected to the welding wire reel assembly, and the other end is connected to the X-axis moving mechanism.

[0016] The present invention also relates to a welding method for a multi-degree-of-freedom welding gun for a cross-shaped steel bar, comprising the following steps:

[0017] S1: The X-axis moving mechanism drives the lifting mechanism and the welding module to move along the X-axis direction to the designated position of the welding area;

[0018] S2: A steel bar tray is set at the designated position. Two short bars and two medium-long bars are arranged into a first well-shaped structure through the steel bar placement slots on the steel bar tray. A long bar is set at each end of the medium-long bar to form a second well-shaped structure with the medium-long bar.

[0019] S3: The linear motor adjusts the distance between the two sets of Y-axis slides on the Y-axis linear guide according to the spacing between the short ribs, and the drive mechanism adjusts the spacing between the first welding gun and the second welding gun according to the spacing between the medium and long ribs;

[0020] S4: The lifting mechanism drives the welding module to descend, and the steel bars of the first crisscross structure are fixed by the spring compression structure. The welding guns in the two sets of welding gun mechanisms weld the welding points of the crisscross structure.

[0021] S5: The lifting mechanism drives the welding module to rise, and the linear motor adjusts the distance between the two sets of Y-axis slides on the Y-axis linear guide rail according to the length of the middle and long ribs;

[0022] S6: The lifting mechanism drives the welding module to descend, and the steel bars of the second crisscross structure are fixed by the spring compression structure, and the welding guns in the two sets of welding gun mechanisms weld the welding points of the crisscross structure;

[0023] 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.

[0024] In summary, the beneficial effects of the above technical solution of the present invention are as follows:

[0025] The present invention can realize the welding of three-layer cross-shaped steel mesh by setting up multiple spacing adjustment mechanisms. By adjusting the welding gun structure and the spacing between welding guns, it can be applied to the welding of different types of steel bars, with a wide range of applications and high welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 Schematic diagram of the overall structure of the multi-degree-of-freedom welding gun described in the embodiment.

[0028] Figure 2 This is a schematic diagram of the welding workbench structure.

[0029] Figure 3 Schematic diagram of the Y-axis moving mechanism structure.

[0030] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0031] 100. X-axis moving mechanism, 200. Lifting mechanism, 300. Welding module, 310. Wire reel assembly, 320. Welding workbench, 321. Main frame, 322. Y-axis linear guide, 323. First welding gun, 324. Second welding gun, 325. Fixed block, 326. Welding slider, 327. Driving mechanism, 328. Welding gun guide, 331. Connecting plate, 332. Spring, 333. Pressure plate, 400. Drag chain. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments of the present invention, other similar embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of protection of the present invention.

[0033] In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit 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 Figure 1-Figure 3 FIG. 1 is a preferred embodiment of the present invention, a multi-degree-of-freedom welding gun for cross-shaped steel bars, comprising 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 reel assembly 310 , which includes a plurality of welding wire reels. The welding wires on the welding wire reels are connected to the welding gun below.

[0038] The X-axis moving mechanism 100 can be realized by a structure such as a linear guide rail to realize lateral reciprocating motion. An X-axis slider is provided on the linear guide rail, and a welding wire reel assembly 310 is provided on the X-axis slider. The welding wire reel assembly is also connected to the lifting mechanism 200.

[0039] The multi-degree-of-freedom welding gun for cross-shaped steel bars further includes a drag chain 400, one end of which is connected to the wire reel assembly 310, and the other end is connected to the X-axis moving mechanism 100. The drag chain 400 is used to tow and protect built-in cables, oil pipes, gas pipes and other pipelines.

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

[0041] The welding workbench further includes a main frame 321 . The main frame 321 is connected to the lifting mechanism 200 . The Y-axis moving mechanism is disposed inside the main frame 321 .

[0042] The lifting mechanism 200 may adopt conventional lifting structures such as linear guide rails and electric push rods.

[0043] The Y-axis moving mechanism includes a Y-axis linear guide rail 322 , on which two groups of Y-axis sliders are disposed, and the welding gun mechanisms are respectively disposed on the Y-axis sliders.

[0044] The welding gun mechanism includes a welding gun guide rail 328, a fixed block 325, a welding slider 326, a drive mechanism 327, and welding guns. The welding guns include a first welding gun 323 and a second welding gun 324. The fixed block 325 and welding slider 326 are disposed on the welding gun guide rail 328. The first welding gun 323 is mounted on one end of the fixed block 325, and the drive mechanism 327 is mounted on the other end of the fixed block 325. The second welding gun 324 is mounted on one end of the welding slider 326, and the other end is connected to the extended end of the drive mechanism 327. The drive mechanism 327 is either an electric push rod or a pneumatic cylinder.

[0045] The welding gun guide rail 328 is disposed 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 also includes a spring compression structure, including a connecting plate 331, a compression plate 333 and a spring 332. The connecting plate 331 is arranged at the bottom of the Y-axis linear guide 322; the two ends of the connecting plate 331 and the compression plate 333 are connected by a spring 332.

[0047] Example 2:

[0048] The present invention also relates to a welding method for a multi-degree-of-freedom welding gun for a crisscross steel bar, which is used in conjunction with the multi-degree-of-freedom welding gun for a crisscross steel bar described in Example 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 along the X-axis direction to the designated position of the welding area;

[0050] S2: A steel bar tray is set at the designated position. Two short bars and two medium-long bars are arranged into a first well-shaped structure through the steel bar placement slots on the steel bar tray. A long bar is set at each end of the medium-long bar to form a second well-shaped structure with the medium-long bar.

[0051] S3: The linear motor adjusts the distance between the two sets of Y-axis slides on the Y-axis linear guide 322 according to the short rib spacing, and the drive mechanism 327 adjusts the distance between the first welding gun 323 and the second welding gun 324 according to the medium and long rib spacing;

[0052] S4: The lifting mechanism 200 drives the welding module 300 to descend, and the steel bars of the first crisscross structure are fixed by the spring compression structure, and the welding guns in the two sets of welding gun mechanisms weld the welding points of the crisscross structure;

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

[0054] S6: The lifting mechanism 200 drives the welding module 300 to descend, and the steel bars of the second crisscross structure are fixed by the spring compression structure, and the welding guns in the two sets of welding gun mechanisms weld the welding points of the crisscross structure;

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

[0056] In summary, the present invention realizes the welding of three-layer crisscross steel mesh by setting up multiple spacing adjustment mechanisms. By adjusting the welding gun structure and the spacing between welding guns, it can be applied to the welding of different types of steel bars, with a wide range of applications and high welding efficiency.

[0057] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A multi-degree-of-freedom welding gun for tic-tac-toe steel bars, characterized in that: It includes 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 lateral reciprocating motion; The welding module comprises a welding workbench, and the welding workbench comprises at least one set of Y-axis moving mechanisms, on which two sets of welding gun mechanisms are arranged.

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

3. The multi-degree-of-freedom welding gun for the cross-shaped steel bars according to claim 2, characterized in that: The Y-axis moving mechanism comprises a Y-axis linear guide rail, two groups of Y-axis sliders are arranged on the Y-axis linear guide rail, and the welding gun mechanisms are respectively arranged on the Y-axis sliders.

4. The multi-degree-of-freedom welding gun for the cross-shaped steel bars according to claim 3, characterized in that: The welding gun mechanism includes a welding gun guide rail, a fixed block, a welding slider, a driving mechanism and a welding gun, and the welding gun includes a first welding gun and a second welding gun; the fixed block and the welding slider are arranged on the welding gun guide rail, the first welding gun is installed at one end of the fixed block, and the driving mechanism is installed at the other end of the fixed block; the second welding gun is installed at one end of the welding slider, and the other end is connected to the protruding end of the driving mechanism.

5. The multi-degree-of-freedom welding gun for the cross-shaped steel bars according to claim 4, characterized in that: The driving mechanism is any one of an electric push rod and a cylinder.

6. The multi-degree-of-freedom welding gun for the cross-shaped steel bars according to claim 4, characterized in 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.

7. The multi-degree-of-freedom welding gun for the cross-shaped steel bars according to claim 3, 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 arranged at the bottom of the Y-axis linear guide rail; the connecting plate and the two ends of the clamping plate are connected by a spring.

8. The multi-degree-of-freedom welding gun for the cross-shaped steel bars according to claim 1, characterized in that: The welding module also includes a welding wire reel assembly, which includes a plurality of welding wire reels, and the welding wires on the welding wire reels are connected to the welding gun.

9. The multi-degree-of-freedom welding gun for the cross-shaped steel bars according to claim 8, characterized in that: The multi-degree-of-freedom welding gun for the cross-shaped steel bars also includes a drag chain, one end of which is connected to the welding wire reel assembly, and the other end of the drag chain is connected to the X-axis moving mechanism.

10. A welding method for a multi-degree-of-freedom welding gun for a tic-tac-toe steel bar, characterized in that: Used in conjunction with the multi-degree-of-freedom welding gun for tic-tac-toe steel bars according to any one of claims 1 to 9, The following steps are involved: S1: The X-axis moving mechanism drives the lifting mechanism and the welding module to move along the X-axis direction to the specified position of the welding area; S2: A steel bar tray is provided at the designated position, and two short bars and two medium-long bars are arranged into a first tic-tac-toe structure through the steel bar placement slot on the steel bar tray; a long bar is provided at each end of the medium-long bar, forming a second tic-tac-toe structure with the medium-long bar; S3: adjusting the distance between the two sets of Y-axis slide blocks on the Y-axis linear guide rail by a linear motor according to the short rib spacing, and adjusting the distance between the first welding gun and the second welding gun by a driving mechanism according to the medium and long rib spacing; S4: The lifting mechanism drives the welding module to descend, and the steel bars of the first tic-tac-toe structure are fixed by the spring compression structure, and the welding guns in the two sets of welding gun mechanisms weld the welding points of the tic-tac-toe structure; S5: The lifting mechanism drives the welding module to rise, and the distance between the two sets of Y-axis slide blocks on the Y-axis linear guide is adjusted by the linear motor according to the length of the middle and long ribs; S6: The lifting mechanism drives the welding module to descend, and the steel bars of the second tic-tac-toe structure are fixed by the spring compression structure, and the welding guns in the two sets of welding gun mechanisms weld the welding points of the tic-tac-toe structure; S7: After welding is completed, the lifting mechanism drives the welding module to rise, and then moves to the specified position of the next welding area through the X-axis moving mechanism.

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