Intelligent welding equipment with single-shaft driving welding gun

Abstract

The utility model discloses intelligent welding equipment with a single-shaft driving welding gun, which comprises an operating platform, a rotating platform is arranged on the operating platform, and a sucking disc is arranged at the top of the rotating platform; an area light source is arranged on the right side of the rotating table on the operating table, an L-shaped mounting frame is arranged on the right side of the operating table, and an upper beam of the mounting frame extends to the position above the suction cup; a single-shaft driving mechanism capable of linearly moving in the direction of the upper beam is arranged on the top of the upper beam, and a welding gun assembly is arranged on the lower portion of the single-shaft driving mechanism. The lower surface of the upper beam is provided with a groove in the left-right direction, and the top in the groove is provided with CCD photosensitive elements which are linearly distributed; the control device is used for receiving feedback of the CCD photosensitive element and controlling operation of the rotating table, the single-shaft driving mechanism and the welding gun assembly; according to the utility model, low-cost intelligent welding is realized.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment, and in particular to an intelligent welding device with a single-axis driven welding torch. Background Technology

[0002] Welding plays a vital role in modern industrial production. With the rapid development of technology, the automation and intelligentization of welding have become important research directions in the field. Modern production also places higher demands on welding quality and efficiency. Currently, most welding is performed by robots or workbenches following pre-set trajectories. This method relies on the workpiece material and the clamping of the workpiece before welding, and calculating complex weld trajectories is time-consuming and labor-intensive. Since robots and workbenches only have execution capabilities and cannot judge or correct according to changes in the surrounding environment, in reality, workpiece assembly errors and changes in weld position and size caused by thermal deformation during welding often lead to the welding torch's movement trajectory deviating from the actual weld, resulting in decreased welding quality or even failure. Therefore, it is essential to adopt appropriate automatic weld tracking technology for correction.

[0003] Automatic weld seam tracking technology first requires the use of certain sensing technologies to obtain the position of the weld seam relative to the welding torch. Common weld seam identification sensors mainly include: arc sensors, contact sensors, ultrasonic sensors, and vision sensors. Among them, contact sensors have a simple structure and are not affected by arc fumes, but different probes are required for different types of weld seams, and they are prone to wear and deformation. Arc sensors have no mechanical wear, but it is difficult to establish an accurate model of arc length and current changes, which brings difficulties to weld seam inspection. Ultrasonic sensors are an advanced type of weld seam identification sensor, which is made based on the principle of ultrasonic waves propagating in metal and generating reflections. They have good real-time performance in weld seam tracking, but because they must be close to the surface of the weldment, they are inevitably limited by welding methods and weldment sizes. In addition, factors such as sound propagation time must be considered, and high requirements are placed on the surface of the weldment, so the application range of ultrasonic sensors is limited.

[0004] Existing welding equipment capable of weld seam tracking, such as the welding system and weld seam tracking method described in application number CN201811405951.1, all require multi-axis drive in the mechanism for clamping the welding torch to align the welding torch with the weld seam. The cost of the robotic arm or multi-axis drive module that achieves multi-axis drive is also high, which is not conducive to cost control. Summary of the Invention

[0005] To reduce manufacturing costs, this invention proposes an intelligent welding device with a single-axis driven welding torch for weld seam tracking. The device includes: an operating table with a rotating platform and a suction cup on top; a surface light source on the right side of the rotating platform, and an L-shaped mounting bracket on the right side of the operating table, with its upper beam extending above the suction cup; a single-axis drive mechanism that can move linearly along the upper beam, with a welding torch assembly mounted below the single-axis drive mechanism; left-right grooves on the lower surface of the upper beam, with linearly distributed CCD photosensitive elements at the top of the grooves; and a control device that receives feedback from the CCD photosensitive elements and controls the operation of the rotating platform, the single-axis drive mechanism, and the welding torch assembly.

[0006] Preferably, the single-axis drive mechanism includes: a drive motor located at the right end of the upper beam, the drive motor shaft driving the ball screw to rotate, and a slider, the upper part of the slider having a through hole, one end of the through hole being fitted with a screw nut, the ball screw passing through the through hole, and the screw nut being sleeved on the outside of the ball screw, so as to realize that the drive motor drives the slider to perform linear motion.

[0007] Preferably, the welding torch assembly includes: a clamping mechanism and a welding torch; the clamping mechanism is fixed to the bottom of the slider, the fixing point is located below the upper beam, and the clamping mechanism clamps the welding torch.

[0008] Preferably, the rotary table includes: a rotating shaft, with a platform fixed to the upper part of the rotating shaft and the lower part connected to a drive motor, which drives the rotating shaft to rotate; the drive motors are all servo motors.

[0009] Preferably, the surface light source is an LED lamp; the control device is an industrial computer.

[0010] This invention is applicable to partially connected plates, which can be plates damaged by welding repair, or two complete plates fixed by partial welding. In use, the connected plates to be welded are fixed to a rotating table by suction cups, and then the surface light source is turned on. The control device controls the rotating table to rotate one revolution. During this cycle, the electrical signal excited by the light transmitted through the weld seam received by the CCD photosensitive element in the groove is transmitted to the control device. The control device plots the change of the maximum illumination position over time within one cycle as a curve, and according to the curve, controls the single-axis drive mechanism to drive the welding gun assembly to weld the plates during the welding process, thus realizing low-cost intelligent welding. Attached Figure Description

[0011] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a perspective view of the present utility model.

[0013] Figure 2 This is a top view of the present invention.

[0014] Figure 3 for Figure 2 AA sectional view.

[0015] In the diagram: 1. Operating table; 2. Rotary table; 3. Suction cup; 4. Surface light source; 5. Mounting bracket; 6. Drive motor; 7. Slider; 8. Welding torch assembly; 9. Groove; 10. CCD photosensitive element. Detailed Implementation

[0016] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0017] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0020] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0021] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. Example 1

[0022] like Figures 1-3 As shown, the left and right positional relationships in this example are as follows: Figure 2 or Figure 3 Based on the left and right sides, the intelligent welding equipment with a single-axis driven welding torch of this utility model includes the following structure: an operating table 1, a rotating table 2 on the operating table 1, and a suction cup 3 on the top of the rotating table 2; a surface light source 4 on the right side of the rotating table 2 on the operating table 1, and an L-shaped mounting bracket 5 on the right side of the operating table 1. The L-shape is designed to minimize material usage. The upper beam of the mounting bracket 5 extends above the suction cup 3; a single-axis drive mechanism that can move linearly along the direction of the upper beam is provided at the top of the upper beam, and a welding torch assembly 8 is mounted at the lower part of the single-axis drive mechanism; a left-right groove 9 is provided on the lower surface of the upper beam, and a linearly distributed CCD photosensitive element 10 is provided at the top of the groove 9; and a control device is also included, which receives feedback from the CCD photosensitive element 10 and controls the operation of the rotating table 2, the single-axis drive mechanism, and the welding torch assembly 8.

[0023] Preferably, the single-axis drive mechanism includes: a drive motor 6 located at the right end of the upper beam, the rotating shaft of the drive motor 6 driving the ball screw to rotate, and a slider 7, the upper part of the slider 7 having a through hole, one end of the through hole being fitted with a screw nut, the ball screw passing through the through hole, and the screw nut being sleeved on the outside of the ball screw, so as to realize that the drive motor 6 drives the slider 7 to perform linear motion.

[0024] Preferably, the welding torch assembly 8 includes: a clamping mechanism and a welding torch; the clamping mechanism is fixed to the bottom of the slider 7, and the fixing point is located below the upper beam. The clamping mechanism clamps the welding torch. The welding torch clamping mechanism is existing technology and at least includes a clamping function. Depending on the actual situation, a vertically moving structure can also be added.

[0025] Preferably, the rotary table 2 includes: a rotating shaft, with a platform fixed on the upper part of the rotating shaft and the lower part connected to a drive motor 6, which drives the rotating shaft to rotate; the drive motor 6 mentioned above are all servo motors, and only a closed-loop controlled power source can accurately meet the requirements of this case.

[0026] Preferably, the surface light source 4 is an LED lamp; the control device is an industrial computer, which can better execute the design concept of this utility model.

[0027] This invention is applicable to partially connected plates, which can be plates damaged by welding repair, or two complete plates fixed by partial welding. In use, the connected plates to be welded are fixed to a rotating table by suction cups, and then the surface light source is turned on. The control device controls the rotating table to rotate one revolution. During this cycle, the electrical signal excited by the light transmitted through the weld seam received by the CCD photosensitive element in the groove is transmitted to the control device. The control device plots the change of the maximum illumination position over time within one cycle as a curve, and according to the curve, controls the single-axis drive mechanism to drive the welding gun assembly to weld the plates during the welding process, thus realizing low-cost intelligent welding.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent welding apparatus having a single-axis driven welding torch, characterized by: The utility model relates to a kind of welding machine, including: Operation platform is provided with rotating table on operation platform, and rotating table top is provided with suction cup;On the operation platform, right side of rotating table is equipped with area light source, and the right side of operation platform is equipped with L-shaped mounting bracket, and the upper beam of mounting bracket extends to the upper side of suction cup;The top of the upper beam is equipped with single-axis drive mechanism that can linearly move along the direction of upper beam, and single-axis drive mechanism lower part is equipped with welding torch assembly;The lower surface of upper beam is equipped with left-right groove, and the top of groove is equipped with linearly distributed CCD photosensitive element;It further includes control device, and control device receives the feedback of CCD photosensitive element and controls the operation of rotating table, single-axis drive mechanism, welding torch assembly.

2. The intelligent welding apparatus having single axis driven welding torch as claimed in claim 1 wherein: The single-axis drive mechanism includes: drive motor arranged at the right end of the upper beam, the rotating shaft of the drive motor drives the ball screw to rotate, and further includes a sliding block, the upper part of the sliding block is provided with a through hole, one end of the through hole is provided with a screw nut, the ball screw passes through the through hole, and the screw nut is sleeved outside the ball screw to realize linear motion of the sliding block driven by the drive motor.

3. The intelligent welding apparatus having single axis driven welding torch as claimed in claim 2 wherein: The welding torch assembly includes: a clamping mechanism and a welding torch;The clamping mechanism is fixed to the bottom of the sliding block, and the fixed point is below the upper beam, and the clamping mechanism clamps the welding torch.

4. The intelligent welding apparatus having single axis driven welding torch as claimed in claim 3 wherein: The rotating table includes: a rotating shaft, a platform is fixed to the upper part of the rotating shaft, and the lower part is connected with the drive motor to drive the rotation;The above-mentioned drive motor is a servo motor.

5. The intelligent welding apparatus having single axis driven welding torch as claimed in claim 4 wherein: The area light source is an LED lamp;The control device is an industrial computer.

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