Weld joint quality on-line detection device

Abstract

The utility model relates to the technical field of weld joint quality online detection, in particular to a weld joint quality online detection device. The utility model provides a weld quality on-line detection device. The weld quality on-line detection device comprises a water tank, an ultrasonic detection probe and a mechanical arm, the ultrasonic detection probe is arranged on the inner wall of the water tank; a rotating assembly and a clamping assembly connected with the rotating assembly are arranged at the free end of the mechanical arm; the clamping assembly is used for clamping a to-be-detected workpiece, and the rotating assembly is used for driving the clamping assembly to rotate. Through cooperation of the mechanical arm, the water tank and the ultrasonic detection probe, defects such as the height of a weld fusion area and pores in a weld can be measured at the same time by using an ultrasonic detection technology, and the device has the advantages of high detection efficiency, high accuracy and high detection precision. And compared with the prior art, the wheel does not need to be damaged, hundred-percent comprehensive detection of the wheel welding seam can be realized, and the safety of the wheel during use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of on-line detection of weld quality, in particular to an on-line detection device for weld quality. Background Art

[0002] The wheel includes a rim and spokes. The rim and the spokes are generally fixed by welding. In order to ensure the welding quality between the rim and the spokes, the weld needs to be inspected.

[0003] The weld between the rim and the spoke when welded by submerged arc welding or gas shielded welding is a lap weld. The quality of the lap weld is generally checked by section inspection, appearance inspection or sampling for bearing capacity testing.

[0004] For vehicles that have been laser welded, the weld width is very narrow, generally around 1 mm, and is located inside the wheel. The weld quality cannot be checked by visual inspection, and can only be sampled by destructive inspection methods, i.e. the above-mentioned cross-section inspection and sampling for load-bearing capacity testing. A comprehensive inspection cannot be achieved, which affects the safety of the wheel when in use.

[0005] In summary, there is an urgent need for a device that can perform a comprehensive inspection on wheels that are welded using laser welding. Utility Model Content

[0006] (I) The problem to be solved by the present invention is that the existing wheels welded by laser cannot be fully inspected.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the embodiment of the utility model provides an online detection device for weld quality, comprising: a water tank, an ultrasonic detection probe and a mechanical arm;

[0009] The ultrasonic detection probe is arranged on the inner wall of the water tank;

[0010] The free end of the mechanical arm is provided with a rotating assembly and a clamping assembly connected to the rotating assembly;

[0011] The clamping assembly is used to clamp the workpiece to be inspected, and the rotating assembly is used to drive the clamping assembly to rotate.

[0012] Furthermore, it also includes a connecting component, through which the ultrasonic detection probe is connected to the inner wall of the water tank. When the ultrasonic detection probe is detecting, the connecting component can fix the distance between the ultrasonic detection probe and the workpiece to be detected.

[0013] Furthermore, the connecting assembly includes an abutment member, an elastic member and a slide rail;

[0014] The slide rail is fixed to the inner wall of the water tank, one end of the elastic member is slidably connected to the slide rail, and the other end is connected to the ultrasonic detection probe, and the detection end of the ultrasonic detection probe is provided with the abutment member.

[0015] Furthermore, the abutment member is a bearing or a metal spherical structure.

[0016] Furthermore, the clamping assembly is a pneumatic chuck arranged at the free end of the robotic arm.

[0017] Furthermore, the rotating assembly includes a driving motor, an output end of which is drivingly connected to the pneumatic chuck and drives the pneumatic chuck to rotate.

[0018] Furthermore, it also includes water system;

[0019] The water system includes a water inlet pipe and a drain pipe;

[0020] One end of the water inlet pipe is connected to the water source, and the other end is connected to the water tank;

[0021] One end of the drainage pipe is connected to the water tank, and the other end is connected to the wastewater pool.

[0022] Furthermore, it also includes a rust inhibitor source for adding rust inhibitor into the water tank.

[0023] Further, it also includes a support assembly;

[0024] The support assembly is divided into a to-be-detected area and a detection area;

[0025] The area to be inspected is used for placing the workpiece to be inspected, and the water tank is arranged in the inspection area.

[0026] Further, the support assembly includes a first platform and a second platform;

[0027] The surface of the first platform forms the area to be detected, and the water tank is arranged on the second platform.

[0028] Beneficial effects of the utility model:

[0029] The utility model provides an online detection device for weld quality, comprising: a water tank, an ultrasonic detection probe and a mechanical arm; the ultrasonic detection probe is arranged on the inner wall of the water tank; the free end of the mechanical arm is provided with a rotating assembly and a clamping assembly connected to the rotating assembly; the clamping assembly is used to clamp a workpiece to be detected, and the rotating assembly is used to drive the clamping assembly to rotate.

[0030] Through the cooperation of the robotic arm, water tank and ultrasonic detection probe, the ultrasonic detection technology can simultaneously measure the height of the weld fusion zone and defects such as pores inside the weld, with the advantages of high detection efficiency, high accuracy and high detection precision. Compared with the existing technology, it can achieve 100% comprehensive detection of the wheel weld without destroying the wheel, thus improving the safety of the wheel when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of the on-line detection device for weld quality provided by the embodiment of the utility model Figure 1 ;

[0033] Figure 2 A schematic diagram of the structure of the on-line detection device for weld quality provided by the embodiment of the utility model Figure 2 .

[0034] Icons: 11- water tank; 12- ultrasonic detection probe; 13- robotic arm; 152- second platform. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides an online detection device for weld quality, including: a water tank 11, an ultrasonic detection probe 12 and a mechanical arm 13.

[0037] The ultrasonic detection probe 12 is arranged on the inner wall of the water tank 11. The free end of the mechanical arm 13 is provided with a rotating assembly and a clamping assembly connected to the rotating assembly.

[0038] The clamping assembly is used to clamp the workpiece to be inspected, and the rotating assembly is used to drive the clamping assembly to rotate.

[0039] The weld quality online detection device provided in this embodiment is used to detect whether there are defects such as pores and lack of fusion in the weld.

[0040] The weld quality online detection device is composed of a water tank 11, an ultrasonic detection probe 12 and a mechanical arm 13.

[0041] The weld quality online detection device adopts ultrasonic detection technology. The ultrasonic detection probe 12 is an ultrasonic phased array probe, which scans the entire weld underwater to achieve three-dimensional imaging of the weld area and automatically detects and evaluates weld defects through a preset threshold. The water tank 11 provides a detection site for weld quality detection, and the water tank 11 is filled with clean water.

[0042] The mechanical arm 13 is used to grab the workpiece to be detected into the water tank 11, and drive the workpiece to be detected to move, so that the ultrasonic detection probe 12 arranged on the inner wall of the water tank can scan the entire weld. The mechanical arm 13 is composed of a plurality of arm bodies connected in sequence, and the two adjacent arm bodies can be rotated or slid, which is specifically set according to the actual situation. The head end of the mechanical arm 13 is rotatably mounted on the mechanical arm 13 mounting seat, and the free end of the mechanical arm 13 is provided with a rotating assembly and a clamping assembly, wherein the clamping assembly is used to clamp the workpiece to be detected, and the rotating assembly is used to drive the clamping assembly to rotate, thereby driving the workpiece to be detected on the clamping assembly to rotate, so that the ultrasonic detection probe 12 can scan the entire weld.

[0043] Optionally, in this embodiment, the workpiece to be inspected is a wheel, which includes a rim and spokes, and the rim and the spokes are fixed by laser welding, and the weld is located between the rim and the spokes.

[0044] During the inspection, the mechanical arm 13 is in operation, and the mechanical arm 13 drives the clamping assembly to move and clamp the wheel. After the wheel is clamped, the mechanical arm 13 continues to move, and the wheel weld is partially immersed below the liquid level of the water in the water tank 11. The ultrasonic detection probe 12 arranged on the inner wall of the water tank 11 begins to scan the weld. At the same time, the rotating assembly drives the clamping assembly to rotate so that the ultrasonic detection probe 12 can scan the entire weld. The ultrasonic signal of the ultrasonic detection probe 12 is returned to the computer, and the computer processes the ultrasonic signal into an image, thereby obtaining the depth of the weld and the defects such as pores and cracks inside the weld, and comparing them with the preset threshold value in the computer, thereby determining the quality of the weld.

[0045] The weld quality online detection device provided in this embodiment can simultaneously measure the weld fusion zone height and defects such as pores inside the weld by using ultrasonic detection technology through the cooperation of the mechanical arm 13, the water tank 11 and the ultrasonic detection probe 12, and has the advantages of high detection efficiency, high accuracy and high detection precision. Compared with the existing technology, it can achieve 100% comprehensive detection of the wheel weld without destroying the wheel, thereby improving the safety of the wheel when in use.

[0046] Optionally, in this embodiment, the ultrasonic detection probe 12 can be fixed to the inner wall of the water tank 11 by conventional fixing methods such as bolts or welding. However, when the rotating assembly drives the workpiece to be detected to rotate, the distance between the ultrasonic detection probe 12 and the workpiece to be detected may change, thereby affecting the accuracy of the detection result of the ultrasonic detection probe 12. For this reason, the weld quality online detection device provided in the embodiment of the utility model is as follows: Figure 1 and Figure 2 As shown, it also includes a connecting component, through which the ultrasonic detection probe 12 is connected to the inner wall of the water tank 11. When the ultrasonic detection probe 12 is detecting, the connecting component can fix the distance between the ultrasonic detection probe 12 and the workpiece to be detected.

[0047] In this embodiment, a connecting component is provided on the inner wall of the water tank 11, and the ultrasonic detection probe 12 is installed on the inner wall of the water tank 11 through the connecting component. In addition, the connecting component can ensure that the distance between the detection end of the ultrasonic detection probe 12 and the workpiece to be detected is fixed, thereby ensuring the accuracy of the detection result of the ultrasonic detection probe 12.

[0048] Specifically, the weld quality online detection device provided by the embodiment of the utility model is as follows: Figure 1 and Figure 2 As shown, the connecting assembly includes an abutment member, an elastic member and a slide rail.

[0049] The slide rail is fixed to the inner wall of the water tank 11 , one end of the elastic member is slidably connected to the slide rail, and the other end is connected to the ultrasonic detection probe 12 , and the detection end of the ultrasonic detection probe 12 is provided with the abutment member.

[0050] In this embodiment, the connection assembly is composed of an abutment member, an elastic member and a slide rail. The slide rail may be a grooved slide rail or a linear guide rail. A slider matching the slide rail is fixed at one end of the elastic member, and the elastic member is slidably connected to the slide rail through the slider. The ultrasonic detection probe 12 has a relative detection end and a mounting end, and the end of the elastic member away from the slider is connected to the mounting end of the ultrasonic detection probe 12. The detection end of the ultrasonic detection probe 12 is used to transmit an ultrasonic signal, and the detection end of the ultrasonic detection probe 12 is arranged toward the weld of the workpiece.

[0051] Preferably, the extension direction of the slide rail and the weld are in the same plane. For example, as mentioned above, if the workpiece to be inspected is a wheel, the weld is a circumferential weld, and the slide rail extends along the tangent direction of the circumferential weld. The end of the elastic member away from the slider is connected to the ultrasonic detection probe 12.

[0052] Furthermore, the abutment member is provided at the detection end of the ultrasonic detection probe 12. When the weld quality detection is performed, the detection end of the ultrasonic detection probe 12 abuts against the workpiece to be detected through the abutment member.

[0053] By providing the abutment, the elastic member and the slide rail, when the weld quality is inspected, the detection end of the ultrasonic detection probe 12 abuts against the workpiece to be inspected through the abutment; the elastic member can ensure that the detection end of the ultrasonic detection probe 12 always abuts against the workpiece to be inspected when the workpiece to be inspected rotates. When the workpiece to be inspected rotates, the ultrasonic detection probe 12 will slide on the slide rail for a distance until the force between the ultrasonic detection probe 12 and the workpiece to be inspected is balanced. At this time, the distance between the ultrasonic detection probe 12 and the workpiece to be inspected will remain constant, so as to ensure that the distance between the detection end of the ultrasonic detection probe 12 and the workpiece to be inspected is constant when the ultrasonic detection probe 12 is inspecting.

[0054] Preferably, in this embodiment, the elastic member is a spring, which has good fatigue resistance and is easy to install.

[0055] Optionally, in this embodiment, the elastic member may also be a rubber rod or a silicone rod with a certain flexibility.

[0056] The device for online detection of weld quality provided by the embodiment of the utility model is as follows: Figure 1 and Figure 2 As shown, the abutment member is a bearing or a metal spherical structure.

[0057] In this embodiment, in order to prevent the abutment from causing wear on the vehicle surface during weld quality inspection, the abutment can preferably be a bearing, or a metal spherical structure, such as a steel ball or a copper ball fixed to the detection end of the ultrasonic detection probe 12.

[0058] It should be noted that when the abutment member is provided, the abutment member may be provided on the side of the detection end of the ultrasonic detection probe 12 to avoid affecting the normal use of the ultrasonic detection probe 12 .

[0059] The utility model provides an on-line detection device for weld quality, such as Figure 1 and Figure 2 As shown, the clamping assembly is a pneumatic chuck arranged at the free end of the mechanical arm 13.

[0060] In this embodiment, the clamping assembly is a pneumatic chuck, which drives the jaws to move on the chuck body through a cylinder, thereby clamping the workpiece to be inspected. It has a simple structure and high reliability.

[0061] Optionally, in this embodiment, the clamping assembly may also adopt a structure such as a pneumatic gripper, which can also achieve the purpose of grasping the workpiece to be inspected.

[0062] The utility model provides an on-line detection device for weld quality, such as Figure 1 and Figure 2 As shown, the rotating assembly includes a driving motor, the output end of which is drivingly connected to the pneumatic chuck and drives the pneumatic chuck to rotate.

[0063] In this embodiment, the rotating assembly adopts a driving motor, which has a simple structure, high reliability and low cost.

[0064] During assembly, the output end of the driving motor can be connected to the pneumatic chuck through a transmission component such as a reducer, and drive the pneumatic chuck to rotate during detection, thereby driving the workpiece to be detected on the pneumatic chuck to rotate.

[0065] Optionally, in this embodiment, the pneumatic chuck can be driven to rotate by cooperating with a gear, a rack and a telescopic motor.

[0066] The utility model provides an on-line detection device for weld quality, such as Figure 1 and Figure 2 As shown, it also includes a water system; the water system includes a water inlet pipe and a drain pipe; one end of the water inlet pipe is connected to the water source, and the other end is connected to the water tank 11; one end of the drain pipe is connected to the water tank 11, and the other end is connected to the wastewater tank.

[0067] In this embodiment, the weld quality online detection device is also used for supplying water into the water tank 11 and for discharging the water in the water tank 11 to form a water system.

[0068] Specifically, the water system includes an inlet pipe and a drain pipe, one end of the inlet pipe is connected to a water source, and the other end is connected to a water inlet of the water tank 11. The water source is a water tank 11 or a water tank for storing clean water, and water in the water source enters the water tank 11 through the inlet pipe. One end of the drain pipe is connected to a wastewater pool, and the other end is connected to a drain outlet of the water tank 11. When the water in the water tank 11 needs to be replaced, the water in the water tank 11 is discharged outward through the drain outlet.

[0069] By setting up the water channel system, the water tank 11 water intake and drainage efficiency can be improved, thereby improving the working efficiency of the weld quality online detection device.

[0070] The weld quality online detection device provided by the embodiment of the utility model preferably further comprises an antirust agent source. The antirust agent source is a container storing the antirust agent. By adding the antirust agent into the water tank 11, the workpiece to be detected can be prevented from rusting due to water on the surface after detection.

[0071] In this embodiment, the rust inhibitor source can be a barrel or bottle storing the rust inhibitor, and the rust inhibitor is manually added into the water tank 11 through the open end of the water tank 11, or the rust inhibitor source is connected to the water tank 11 through a pipeline for adding the rust inhibitor into the water tank 11.

[0072] The device for online detection of weld quality provided by the embodiment of the utility model is as follows: Figure 1 and Figure 2 As shown, it also includes a support component; the support component is divided into a to-be-detected area and a detection area; the to-be-detected area is used to place the workpiece to be detected, and the water tank 11 is arranged in the detection area.

[0073] In this embodiment, the weld quality online detection device further includes a support assembly, which is divided into a detection area and a to-be-detected area. The to-be-detected area is used to temporarily store workpieces that have not yet been detected. Preferably, the to-be-detected area can be set close to an existing production line, and the workpieces transported on the production line can be directly grabbed by a structure such as a manipulator into the to-be-detected area. A water tank 11 is provided in the detection area for performing weld quality detection on the workpiece to be detected.

[0074] By setting up the detection area and the area to be detected, the division of labor in each area is clear, avoiding confusion when the device is in use.

[0075] The device for online detection of weld quality provided by the embodiment of the utility model is as follows: Figure 1 and Figure 2 As shown, the support assembly includes a first platform and a second platform 152 ; the surface of the first platform forms the area to be detected, and the water tank 11 is arranged on the second platform 152 .

[0076] In this embodiment, the support assembly is composed of two platforms, namely a first platform and a second platform 152. The surface of the first platform is the area to be detected, the surface of the second platform 152 is the detection area, and the water tank 11 is arranged on the second platform.

[0077] By providing the first platform and the second platform 152 to form the support assembly, interference between the area to be inspected and the inspection area can be avoided, and the positions of the area to be inspected and the inspection area can be arranged according to the actual situation of the workshop.

[0078] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0079] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for online detection of weld quality, characterized in that: include: A water tank (11), an ultrasonic detection probe (12) and a mechanical arm (13); The ultrasonic detection probe (12) is arranged on the inner wall of the water tank (11); The free end of the mechanical arm (13) is provided with a rotating assembly and a clamping assembly connected to the rotating assembly; The clamping assembly is used to clamp the workpiece to be inspected, and the rotating assembly is used to drive the clamping assembly to rotate.

2. The on-line detection device for weld quality according to claim 1, characterized in that: It also comprises a connection component, through which the ultrasonic detection probe (12) is connected to the inner wall of the water tank (11), and when the ultrasonic detection probe (12) is detecting, the connection component can fix the distance between the ultrasonic detection probe (12) and the workpiece to be detected.

3. The on-line detection device for weld quality according to claim 2, characterized in that: The connecting assembly comprises an abutment member, an elastic member and a slide rail; The slide rail is fixed to the inner wall of the water tank (11); one end of the elastic member is slidably connected to the slide rail, and the other end is connected to the ultrasonic detection probe (12); the detection end of the ultrasonic detection probe (12) is provided with the abutment member.

4. The on-line detection device for weld quality according to claim 3 is characterized in that: The abutment member is a bearing or a metal spherical structure.

5. The on-line detection device for weld quality according to any one of claims 1 to 4, characterized in that: The clamping assembly is a pneumatic chuck arranged at the free end of the mechanical arm (13).

6. The on-line detection device for weld quality according to claim 5, characterized in that: The rotating assembly includes a driving motor, the output end of which is drivingly connected to the pneumatic chuck and drives the pneumatic chuck to rotate.

7. The on-line detection device for weld quality according to claim 1, characterized in that: It also includes waterway systems; The water system includes a water inlet pipe and a drain pipe; One end of the water inlet pipe is connected to a water source, and the other end is connected to the water tank (11); One end of the drainage pipe is connected to the water tank (11), and the other end is connected to the wastewater tank.

8. The on-line detection device for weld quality according to claim 1, characterized in that: It also includes a rust inhibitor source for adding the rust inhibitor into the water tank (11).

9. The on-line detection device for weld quality according to claim 1, characterized in that: Also included is a support assembly; The support assembly is divided into a to-be-detected area and a detection area; The area to be inspected is used for placing the workpiece to be inspected, and the water tank (11) is arranged in the inspection area.

10. The on-line detection device for weld quality according to claim 9, characterized in that: The support assembly includes a first platform and a second platform; The surface of the first platform forms the area to be detected, and the water tank (11) is arranged on the second platform.

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