A welding quality inspection device

Abstract

This utility model discloses a welding quality inspection device, relating to the field of welding quality inspection technology. It includes a base and a top frame, with an optical inspection mechanism mounted at the bottom of the top frame. The base has two sets of straight rails, on which a movable frame is slidably connected. The movable frame can synchronously approach or move away from the weldment and is connected to a cylinder via bearings. The cylinder's axis is horizontally aligned, and its back side has a dust collection hood with a suction fan and an outlet hose. The cylinder can rotate in both directions. An inner rotating shaft has a brush extending 5-15mm beyond the cylinder, and a motor on the cylinder drives the rotating shaft to rotate. During operation, the movable frame moves the cylinder closer to the weldment, the motor drives the brush to rotate and clean, the cylinder rotates in both directions to adjust its angle, and the suction fan synchronously removes impurities, which are then inspected by the optical inspection mechanism. This device provides thorough cleaning, ensures accurate inspection, has strong applicability, and a high degree of automation.

Description

Technical Field

[0001] This utility model relates to the field of welding quality inspection technology, and in particular to a welding quality inspection device. Background Technology

[0002] In the welding production field, accurate welding quality inspection is a crucial step in ensuring product performance and safety. Currently, optical inspection technology is widely used in weld quality inspection due to its advantages such as non-contact operation and high precision. However, optical inspection devices have stringent requirements for the inspection environment, and are particularly sensitive to impurities such as dust and welding slag adhering to the welded parts of the workpiece. These impurities can cause interference noise in the weld images captured by the optical inspection lens, and may even obscure minor defects, seriously affecting the accuracy of the inspection results. This could lead to unqualified welds being mistakenly judged as qualified, posing safety hazards for subsequent use.

[0003] In existing technologies, the cleaning of welded parts before inspection mostly involves manual wiping or simple brushing. Manual wiping is inefficient, and the cleaning effect is greatly affected by the operator's experience, making it difficult to guarantee consistency. Simple brushing can only remove surface dust and has limited effectiveness in removing tightly attached weld slag and debris. Furthermore, the cleaning process can easily cause impurities to scatter, resulting in secondary contamination of the workpiece surface. In addition, some automated cleaning devices have fixed brush angles, which cannot flexibly adjust the cleaning direction according to the complex structure around the weld, resulting in cleaning dead zones and failing to meet the surface cleanliness requirements of optical inspection. Therefore, developing a device that can efficiently and thoroughly clean impurities on the surface of welded parts and provide a clean inspection environment for optical inspection has become an important requirement for improving the reliability of weld quality inspection. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a welding quality inspection device.

[0005] The present invention proposes a welding quality inspection device, which includes a base and a top frame. The top frame is located above the middle part of the base, and an optical inspection mechanism is installed at the bottom of the top frame.

[0006] The base is equipped with two sets of straight rails arranged in a straight line, and each set of straight rails is slidably connected to a movable frame. The two sets of movable frames can move closer or further away synchronously.

[0007] Both sets of movable frames are connected to cylinders laterally via bearings. The axes of the two sets of cylinders are horizontal and coincident. A dust collection hood is installed on the back side of each set of cylinders. A dust collection fan is installed inside the dust collection hood, and an outlet hose is installed on its back side.

[0008] The two sets of cylinders are capable of rotating clockwise and counterclockwise around their respective axes on their respective movable frames. Each set of cylinders is radially connected to a rotating shaft on its inner wall. The sidewall of the rotating shaft is densely covered with brushes. A motor is mounted on the cylinder and is used to drive the rotating shaft to rotate.

[0009] Preferably, the top frame and the base are fixedly connected by support columns, and at least two support columns are provided, evenly distributed between the top frame and the base.

[0010] Preferably, the base is equipped with a drive mechanism for driving the two sets of moving frames to move closer or further apart synchronously. The drive mechanism includes a drive motor, a bidirectional lead screw, and two nuts. The bidirectional lead screw is rotatably mounted on the base and is parallel to the two sets of straight rails. The two nuts are respectively engaged with the two reverse threads of the bidirectional lead screw. The two nuts are respectively connected to the two sets of moving frames. The drive motor is used to drive the bidirectional lead screw to rotate.

[0011] Preferably, a driving component is installed on the movable frame, the drive shaft of the driving component is connected to a gear, a gear ring is installed on the outer wall of the cylinder, the gear meshes with the gear ring, and the driving component can drive the gear to rotate periodically in the forward and reverse directions.

[0012] Preferably, the end of the outlet hose away from the dust collection hood is connected to a dust collection box, and a filter layer is provided inside the dust collection box.

[0013] Preferably, the optical inspection mechanism includes an optical inspection lens and a supplementary lighting component, wherein the supplementary lighting component surrounds the outer side of the optical inspection lens.

[0014] Preferably, the optical inspection lens is used to acquire weld seam images of the welded parts. By comparing and analyzing the acquired weld seam images with preset standard weld seam images, the presence of defects such as cracks, lack of fusion, slag inclusions, and porosity in the weld seam can be identified, thereby determining the welding quality.

[0015] Preferably, the brush on the rotating shaft has a portion extending out of the cylinder, with an extension length of 5-15mm, to ensure that it can contact the outer surface of the welded part during the cleaning process.

[0016] The welding quality inspection device proposed in this utility model has the following beneficial effects:

[0017] The motor-driven shaft rotates the brush, efficiently cleaning the outer surface of the welded parts. The brush's extended cylindrical design ensures full contact with the workpiece surface, effectively removing adhering dust, welding slag, and other impurities. Simultaneously, the cylinder can rotate clockwise and counterclockwise, changing the brush's cleaning angle and avoiding blind spots, significantly improving cleaning thoroughness. This provides a clean inspection environment for subsequent optical testing, reducing interference from impurities on the image captured by the optical inspection lens, thus ensuring the accuracy of welding quality inspection results. During brush cleaning, a vacuum fan inside the dust hood operates simultaneously, promptly drawing the cleaned impurities into the dust collection box through the outlet hose. After filtration, the impurities are collected, preventing secondary pollution caused by scattered impurities and further ensuring the cleanliness of the workpiece surface. Two sets of movable frames can move synchronously closer or further apart on a straight rail, accommodating welded parts of different sizes. The brush extension length is 5-15mm, effectively contacting the outer surface of workpieces of different specifications according to actual conditions. This makes the device effective in cleaning various welded parts before quality inspection, with a wide range of applications.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the cylindrical part of this utility model;

[0022] Explanation of the labels in the diagram:

[0023] 1. Base; 101. Straight rail;

[0024] 2. Top frame; 201. Optical inspection mechanism;

[0025] 3. Movable frame; 301. Cylindrical tube; 302. Gear ring; 303. Dust hood; 304. Outlet hose; 305. Gear;

[0026] 4. Shaft; 401. Brush; 402. Motor. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] like Figures 1-3 The welding quality inspection device shown includes a base 1 and a top frame 2. The top frame 2 is located above the center of the base 1 and is fixedly connected to the base 1 by support columns. At least two support columns are evenly distributed between the top frame 2 and the base 1 to ensure stable installation of the top frame 2. An optical inspection mechanism 201 is installed at the bottom of the top frame 2. The optical inspection mechanism 201 includes an optical inspection lens and a supplementary lighting component. The supplementary lighting component surrounds the outer side of the optical inspection lens and provides sufficient and uniform light for the inspection, ensuring clear inspection images. The optical inspection lens is used to acquire weld images of the welded parts. By comparing and analyzing the acquired weld images with preset standard weld images, defects such as cracks, lack of fusion, slag inclusions, and porosity in the weld are identified, thereby determining the welding quality.

[0029] Two sets of straight rails 101 arranged in a straight line are mounted on the base 1. Movable frames 3 are slidably connected to each set of rails 101, and the two sets of movable frames 3 can move closer or further apart synchronously. A drive mechanism for driving the two sets of movable frames 3 to move closer or further apart synchronously is mounted on the base 1. The drive mechanism includes a drive motor 402, a bidirectional lead screw, and two nuts. The bidirectional lead screw is rotatably mounted on the base 1 and is parallel to the two sets of straight rails 101. The two nuts are respectively engaged with two reverse threads on the bidirectional lead screw and are respectively connected to the two sets of movable frames 3. The drive motor 402 drives the bidirectional lead screw to rotate. When the drive motor 402 starts, it drives the bidirectional lead screw to rotate. Because the two nuts are engaged with the two reverse threads on the bidirectional lead screw, the two nuts drive the two sets of movable frames 3 to move closer or further apart synchronously, thus accommodating welded parts of different sizes.

[0030] Both sets of movable frames 3 are laterally rotatably connected to cylinders 301 via bearings, and the axes of the two sets of cylinders 301 are horizontal and coincident. A driving component is installed on the movable frame 3, and the transmission shaft of the driving component is connected to a gear 305. A gear ring 302 is installed on the outer wall of the cylinder 301. The gear 305 meshes with the gear ring 302. The driving component can drive the gear 305 to rotate forward and reverse periodically, thereby driving the cylinder 301 to rotate forward and reverse. This avoids the problem of the motor 402's wires and hoses 304 getting tangled.

[0031] Both sets of cylinders 301 are equipped with a dust collection hood 303 on their back sides. A dust collection fan is installed inside the dust collection hood 303, and an outlet hose 304 is installed on its back side. The end of the outlet hose 304 away from the dust collection hood 303 is connected to a dust collection box. A filter layer is installed inside the dust collection box. The filter layer can filter the dust that is sucked in and prevent dust from polluting the environment.

[0032] Each set of cylinders 301 is radially rotatably connected to a rotating shaft 4 on its inner wall. The side wall of the rotating shaft 4 is densely covered with brushes 401. The brushes 401 on the rotating shaft 4 have a portion extending out of the cylinder 301, with an extension length of 5-15mm, to ensure that they can contact the outer surface of the welded parts during the cleaning process. A motor 402 is mounted on the cylinder 301, and the motor 402 is used to drive the rotating shaft 4 to rotate.

[0033] In this embodiment, during operation:

[0034] When quality inspection of the welded parts is required, the welded parts are first placed on the base 1, between the two sets of cylinders 301. The drive motor 402 is started, and through the cooperation of the bidirectional lead screw and lead nut, the two sets of moving frames 3 drive the two sets of cylinders 301 to move closer to the welded parts synchronously until the brush 401 contacts the outer surface of the welded parts.

[0035] The motor 402 is started, and it drives the brush 401 to rotate via the shaft 4, cleaning the outer surface of the welded part. Simultaneously, the drive unit is activated, causing the gear 305 to rotate periodically forward and backward. Through the meshing of the gear 305 and the gear ring 302, the cylinder 301 rotates forward and backward, thereby changing the cleaning angle of the brush 401 and enhancing the cleaning effect. Since the motor 402 has external wiring and a flexible hose 304, the forward and reverse rotation of the cylinder 301 prevents the wiring and hose from tangling.

[0036] During the cleaning process, the dust collector is turned on, and the dust adhering to the surface of the workpiece and brushed off by the brush 401 is sucked into the dust collection box through the dust collection hood 303 and the outlet hose 304. After being filtered by the filter layer, it is collected.

[0037] After cleaning, the drive motor 402 moves the two sets of moving frames 3 away from the weldment, separating the cylinder 301 and brush 401 from the weldment. Then, the optical inspection mechanism 201 starts working, the supplementary lighting component provides light, the optical inspection lens acquires the weld seam image of the weldment, and compares and analyzes it with the preset standard weld seam image to determine the welding quality.

[0038] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding quality inspection device, characterized in that, It includes a base (1) and a top frame (2), the top frame (2) being located above the middle of the base (1), and an optical detection mechanism (201) being installed at the bottom of the top frame (2). The base (1) is equipped with two sets of straight rails (101) arranged in a straight line. Each set of straight rails (101) is slidably connected to a movable frame (3). The two sets of movable frames (3) can move closer or further away synchronously. Both sets of the movable frames (3) are connected to cylinders (301) by bearings for lateral rotation. The axes of the two sets of cylinders (301) are horizontal and coincident. Both sets of cylinders (301) are equipped with dust collection hoods (303) on their back sides. A dust collection fan is installed inside the dust collection hood (303), and an outlet hose (304) is installed on its back side. The two sets of cylinders (301) can rotate clockwise and counterclockwise around their respective axes on their respective moving frames (3). The inner wall of each set of cylinders (301) is radially connected to a rotating shaft (4). The side wall of the rotating shaft (4) is densely provided with brushes (401). A motor (402) is installed on the cylinder (301), and the motor (402) is used to drive the rotating shaft (4) to rotate.

2. The welding quality inspection device according to claim 1, characterized in that, The top frame (2) and the base (1) are fixedly connected by support columns. At least two support columns are provided and are evenly distributed between the top frame (2) and the base (1).

3. The welding quality inspection device according to claim 1, characterized in that, The base (1) is equipped with a drive mechanism for driving two sets of moving frames (3) to move closer or further away synchronously. The drive mechanism includes a drive motor (402), a bidirectional lead screw and two lead nuts. The bidirectional lead screw is mounted on the base (1) in a lateral rotation and is parallel to the two sets of straight rails (101). The two lead nuts are respectively engaged with the two reverse threads of the bidirectional lead screw. The two lead nuts are respectively connected to the two sets of moving frames (3). The drive motor (402) is used to drive the bidirectional lead screw to rotate.

4. The welding quality inspection device according to claim 1, characterized in that, A drive unit is installed on the movable frame (3), and a gear (305) is connected to the drive shaft of the drive unit. A gear ring (302) is installed on the outer wall of the cylinder (301). The gear (305) meshes with the gear ring (302), and the drive unit can drive the gear (305) to rotate forward and reverse periodically.

5. The welding quality inspection device according to claim 1, characterized in that, The end of the outlet hose (304) away from the dust hood (303) is connected to a dust collection box, and a filter layer is provided inside the dust collection box.

6. The welding quality inspection device according to claim 1, characterized in that, The optical inspection mechanism (201) includes an optical inspection lens and a supplementary lighting assembly, the supplementary lighting assembly being surrounding the outside of the optical inspection lens.

7. The welding quality inspection device according to claim 6, characterized in that, The optical inspection lens is used to acquire weld seam images of the welded parts. By comparing and analyzing the acquired weld seam images with preset standard weld seam images, it can identify whether there are defects such as cracks, lack of fusion, slag inclusions, and porosity in the weld seam, and thus judge the welding quality.

8. The welding quality inspection device according to claim 1, characterized in that, The brush (401) on the rotating shaft (4) has a portion extending out of the cylinder (301) with an extension length of 5-15mm to ensure that it can contact the outer surface of the welded part during the cleaning process.

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