Double-gun automatic drawing and welding machine for middle trough of scraper conveyor

Abstract

The utility model belongs to the technical field of middle trough welding, and particularly discloses a scraper conveyor middle trough double-gun automatic drawing welding machine which comprises a base, a workbench, a welding gun walking module, a double-water-cooling welding gun, a wire feeder, an oscillator, a workbench rotation driving module and an infrared light emitter. The workbench rotation driving module is located on the base, and the workbench is connected with the workbench rotation driving module and can rotate relative to the base. The two welding gun walking modules are symmetrically installed at one end of the base, each welding gun walking module is provided with a double-water-cooling welding gun and a wire feeder, and the middle of each double-water-cooling welding gun is provided with an oscillator. The two infrared light emitters are symmetrically installed on the two welding gun walking modules and used for emitting infrared rays to the workpiece drawing-out welding position. According to the drawing welding machine, symmetrical drawing welding of the middle trough of the scraper conveyor is achieved, the residual stress in the middle trough is reduced, and the welding quality is guaranteed; automatic alignment of the welding gun and the workpiece position is achieved through infrared rays, and dynamic deviation correction of the welding gun is achieved by detecting welding current through an arc sensor.

Description

Technical Field

[0001] The utility model belongs to the technical field of middle trough welding, in particular to a double-gun automatic welding machine for the middle trough of a scraper conveyor. Background Art

[0002] Scraper conveyors are used for transporting coal underground in coal mines. They are among the most widely used equipment in coal mines and are also among the most susceptible to wear and tear. The central trough is a box-shaped structure formed by a center plate, a bottom plate, and trough sides. Because the weld bead between the center trough bottom plate and the inner side of the trough sides is located in a narrow space, the operator's line of sight is obstructed, making welding difficult. The existing conventional welding method for this weld bead involves hoisting the workpiece onto a workbench, securing it with fixtures, and manually welding. To facilitate welding, the workbench can be tilted at a certain angle. However, this method presents problems such as unstable weld quality, high labor intensity, and operational difficulties due to limited space.

[0003] Utility model application number 202322615215.1 discloses a mid-slot undercut welding position adjustment device, comprising a chute scraper transfer mechanism housing, a position adjustment mechanism, and a dual-gun undercut welding mechanism. The dual-gun undercut welding mechanism comprises a first gooseneck welding gun, a second gooseneck welding gun, a three-dimensional movement mechanism, a first wire feed mechanism, a second wire feed mechanism, a first single-arm undercut welding machine, and a second single-arm undercut welding machine. The three-dimensional movement mechanism comprises an X-axis slide, a first Y-axis slide, a second Y-axis slide, a first Z-axis slide, and a second Z-axis slide. This device automates undercut welding of welds in confined spaces within the chute scraper transfer mechanism housing, while reducing labor intensity and improving production efficiency.

[0004] The invention application with application number 201910691006.0 discloses a dual-cantilever dual-gun dual CNC plasma surfacing machine, including a surfacing platform, a light shielding screen, a plasma welding gun, a cantilever, a slide rail drag, a Y-axis motor, a Z-axis motor and a powder feeder, etc.; a symmetrical surfacing method is adopted for the bottom plate in the same middle groove, so that the weld is evenly and symmetrically deformed, solving the problem of weld cracking caused by uneven deformation of the bottom plate in the middle groove.

[0005] It can be seen that some existing middle slot welding devices use two guns to achieve symmetrical welding, but there are still some shortcomings, such as the welding gun cannot automatically align with the workpiece position, and the welding gun cannot dynamically correct deviation during movement. Based on this, the application proposes a scraper conveyor middle slot automatic welding machine with two guns. Utility Model Content

[0006] Aiming at the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a double-gun automatic digging and welding machine for the middle trough of a scraper conveyor.

[0007] The utility model solves the technical problem by adopting the following technical solutions:

[0008] A scraper conveyor middle trough double-gun automatic digging welding machine, comprising a base, a workbench, a welding gun travel module, dual water-cooled welding guns, a wire feeder and an oscillator; characterized in that the digging welding machine also includes a workbench rotation drive module and an infrared light emitter; the workbench rotation drive module is located on the base, and the workbench is connected to the workbench rotation drive module and can rotate relative to the base; two welding gun travel modules are symmetrically installed at one end of the base, each welding gun travel module is installed with dual water-cooled welding guns and a wire feeder, and an oscillator is provided in the middle of the dual water-cooled welding guns; two infrared light emitters are symmetrically installed on the two welding gun travel modules for emitting infrared rays to the digging welding position of the workpiece.

[0009] Furthermore, the workbench rotation drive module includes a slewing bearing, a workbench drive motor and a gear transmission module; the outer ring of the slewing bearing is fixedly connected to the base, and the inner ring is fixedly connected to the workbench; the workbench drive motor is located on the base, and the output shaft of the workbench drive motor is fixedly connected to the driving gear of the gear transmission module, and the driven gear of the gear transmission module is engaged with the outer ring of the slewing bearing.

[0010] Furthermore, the welding gun walking module includes an X-axis guide rail, an X-axis slide, an X-axis drive module, a Y-axis guide rail, a Y-axis slide, a Y-axis drive module, a column, a Z-axis slide and a Z-axis drive module; the X-axis guide rail is installed on the ground, the X-axis slide is slidably installed on the X-axis guide rail, and the X-axis drive module is connected to the X-axis slide; the Y-axis guide rail is located on the X-axis slide, the Y-axis slide is slidably installed on the Y-axis guide rail, and the Y-axis drive module is connected to the Y-axis slide; the column is located on the Y-axis slide, the Z-axis slide is slidably installed on the column, and the Z-axis drive module is connected to the Z-axis slide.

[0011] Furthermore, the welding machine also includes an arc sensor for detecting welding current.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model is equipped with two sets of dual water-cooled welding guns to achieve symmetrical undercut welding of the middle trough of the scraper conveyor, so that the welding residual stresses generated on both sides of the bottom plate of the middle trough can offset each other, thereby reducing the residual stress inside the middle trough and ensuring welding quality. The workbench is driven by the workbench rotation drive module to fine-tune the position of the workpiece so that the undercut welding position of the middle trough is parallel to the infrared light emitted by the infrared light emitter, thereby achieving automatic alignment of the welding gun and the workpiece position, solving the problem of position deviation caused by manually adding positioning blocks for alignment, and improving production efficiency. During the welding process, the arc sensor detects the welding current in real time to determine whether the welding gun deviates from the set welding trajectory, which is conducive to dynamic deviation correction of the welding gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side view of the utility model;

[0015] Figure 2 It is a top view of the utility model;

[0016] In the figure, 1-base; 2-slewing bearing; 3-workbench; 4-dual water-cooled welding gun; 5-wire feeder; 6-oscillator; 7-X-axis guide rail; 8-X-axis slide; 9-Y-axis guide rail; 10-Y-axis slide; 11-column; 12-Z-axis slide; 13-barreled welding wire; 14-control cabinet. DETAILED DESCRIPTION

[0017] Specific embodiments are given below in conjunction with the accompanying drawings. The specific embodiments are only used to introduce the technical solutions of the present utility model in detail and are not intended to limit the scope of protection of the present application.

[0018] like Figures 1-2 As shown, the utility model provides a scraper conveyor middle trough double-gun automatic welding machine, including a base 1, a workbench 3, a workbench rotation drive module, a welding gun travel module, a double water-cooled welding gun 4, a wire feeder 5, an oscillator 6 and an infrared light emitter (not shown in the figure);

[0019] Among them, the base 1 is installed on the ground by anchor bolts, the workbench rotation drive module is installed on the base 1, and the workbench 3 is connected to the workbench rotation drive module, so that the workbench 3 can rotate relative to the base 1, which is convenient for adjusting the position of the workpiece and realizing the alignment of the welding gun and the workpiece; two welding gun walking modules are symmetrically installed at one end of the base 1, and two double water-cooled welding guns 4 are symmetrically installed on the two welding gun walking modules. The double water-cooled welding guns 4 are driven to walk by the welding gun walking modules, so that the double water-cooled welding guns 4 move according to the set welding trajectory; each double An oscillator 6 is provided in the middle of the water-cooled welding gun 4 for adjusting the swing angle of the welding gun; the two wire feeders 5 are respectively located on the columns 11 of the corresponding welding gun travel modules, and the barreled welding wire 13 enters the wire feeder 5 from the wire inlet to transport the welding wire to the double water-cooled welding gun 4; the two infrared light emitters are respectively installed on the columns 11 of the corresponding welding gun travel modules, and emit infrared rays to the workpiece welding position on the workbench 3. The workpiece position is fine-tuned by rotating the workbench 3 so that the workpiece welding position is parallel to the infrared rays, thereby realizing automatic alignment of the welding gun and the workpiece position.

[0020] The workbench rotation drive module includes a slewing bearing 2, a workbench drive motor (not shown in the figure) and a gear transmission module (not shown in the figure); the outer ring of the slewing bearing 2 is fixedly connected to the base 1, and the inner ring is fixedly connected to the workbench 3; the workbench drive motor is fixed on the base 1, and the output shaft of the workbench drive motor is fixedly connected to the driving gear of the gear transmission module, and the driven gear of the gear transmission module is engaged with the outer ring of the slewing bearing 2, so that the workbench drive motor drives the slewing bearing 2 to rotate through the gear transmission module, and then drives the workbench 3 to rotate.

[0021] The welding gun walking module includes an X-axis guide rail 7, an X-axis slide 8, an X-axis drive module (not shown in the figure), a Y-axis guide rail 9, a Y-axis slide 10, a Y-axis drive module (not shown in the figure), a column 11, a Z-axis slide 12 and a Z-axis drive module (not shown in the figure); wherein the X-axis guide rail 7 is fixed to the ground, the X-axis slide 8 is slidably mounted on the X-axis guide rail 7, and the X-axis drive module is connected to the X-axis slide 8 to drive the X-axis slide 8 to slide back and forth on the X-axis guide rail 7; the Y-axis guide rail 9 is fixed on the X-axis slide 8, and the Y-axis slide 10 is slidably installed on the Y-axis guide rail 9, and the Y-axis drive module is connected to the Y-axis slide 10, which is used to drive the Y-axis slide 10 to slide back and forth on the Y-axis guide rail 9; the column 11 is fixedly installed on the Y-axis slide 10, and the Z-axis slide 12 is slidably installed on the column 11, and the Z-axis drive module is connected to the Z-axis slide 12, which is used to drive the Z-axis slide 12 to slide back and forth on the column 11; the dual water-cooled welding gun 4 is installed on the Z-axis slide 12, and the spatial position of the dual water-cooled welding gun 4 is adjusted by the X-axis drive module, the Y-axis drive module and the Z-axis drive module.

[0022] The scraper conveyor middle trough double-gun automatic welding machine also includes an arc sensor (not shown in the figure) for real-time detection of welding current. When the welding current is greater than the set value, it indicates that the dual water-cooled welding guns deviate from the set welding trajectory and their movement position needs to be corrected.

[0023] The working principle and workflow of this utility model are:

[0024] Place the scraper conveyor middle trough workpiece to be welded on the workbench 3 and secure it with a fixture. Start the workbench drive motor, which drives the slewing bearing 2 through the gear transmission module, and then drives the workbench 3 to rotate, so as to fine-tune the workpiece position so that the workpiece welding position is parallel to the infrared light emitted by the infrared light emitter, realizing automatic alignment between the welding gun and the workpiece.

[0025] The X-axis drive module, Y-axis drive module, and Z-axis drive module are activated to respectively drive the X-axis slide 8, Y-axis slide 10, and Z-axis slide 12 to adjust the spatial position of the dual water-cooled welding gun 4, so that the welding gun moves along the set welding trajectory, completing the scraper conveyor middle slot welding process. During the welding process, the welding current is detected in real time by the current sensor. When the welding current is greater than the set value, it indicates that the welding gun has deviated from the set welding trajectory and its movement position needs to be corrected. At this time, the control cabinet 14 adjusts the welding gun position through the X-axis drive module, Y-axis drive module, and Z-axis drive module to return it to the set welding trajectory.

[0026] Any matters not described in this utility model are applicable to the prior art.

Claims

1. A scraper conveyor middle trough double gun automatic welding machine, including a base, a workbench, a welding gun travel module, a double water-cooled welding gun, a wire feeder and an oscillator; characterized in that: The welding machine also includes a workbench rotation drive module and an infrared light emitter; the workbench rotation drive module is located on the base, and the workbench is connected to the workbench rotation drive module and can rotate relative to the base; two welding gun travel modules are symmetrically installed at one end of the base, each welding gun travel module is installed with a dual water-cooled welding gun and a wire feeder, and an oscillator is provided in the middle of the dual water-cooled welding gun; two infrared light emitters are symmetrically installed on the two welding gun travel modules, and are used to emit infrared rays to the welding position of the workpiece.

2. The scraper conveyor middle trough double-gun automatic welding machine according to claim 1 is characterized in that: The workbench rotation drive module includes a slewing bearing, a workbench drive motor and a gear transmission module; the outer ring of the slewing bearing is fixedly connected to the base, and the inner ring is fixedly connected to the workbench; the workbench drive motor is located on the base, and the output shaft of the workbench drive motor is fixedly connected to the driving gear of the gear transmission module, and the driven gear of the gear transmission module is engaged with the outer ring of the slewing bearing.

3. The scraper conveyor middle trough double-gun automatic welding machine according to claim 1 or 2, characterized in that: The welding gun walking module includes an X-axis guide rail, an X-axis slide, an X-axis drive module, a Y-axis guide rail, a Y-axis slide, a Y-axis drive module, a column, a Z-axis slide and a Z-axis drive module; the X-axis guide rail is installed on the ground, the X-axis slide is slidably installed on the X-axis guide rail, and the X-axis drive module is connected to the X-axis slide; the Y-axis guide rail is located on the X-axis slide, the Y-axis slide is slidably installed on the Y-axis guide rail, and the Y-axis drive module is connected to the Y-axis slide; the column is located on the Y-axis slide, the Z-axis slide is slidably installed on the column, and the Z-axis drive module is connected to the Z-axis slide.

4. The scraper conveyor middle trough double-gun automatic welding machine according to claim 1 is characterized in that: The welding machine further comprises an arc sensor for detecting welding current and dynamically correcting the position of the welding gun.

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