A surface defect detection device for columnar products

Abstract

This utility model belongs to the field of surface defect detection technology for columnar products, and discloses a surface defect detection device for columnar products, including a transparent shell, a transparent turntable inside the transparent shell, a rotation drive component connected to the bottom of the transparent turntable, and a circumferentially evenly distributed positioning groove at the top edge of the transparent turntable. The rinsing structure in the pretreatment component adopts drain pipes and rinsing nozzles distributed vertically, which can simultaneously perform rinsing operations from the bottom and top of the columnar product, thoroughly removing oil stains, dust and other contaminants from the product surface, avoiding interference from impurities in subsequent defect detection. The drying structure, through the vertically arranged hot air pipes and hot air outlets, can quickly and evenly dry the rinsed columnar product, avoiding the influence of water stains on detection imaging and reducing the risk of oxidation of the product surface in humid environments.

Description

Technical Field

[0001] This utility model belongs to the field of surface defect detection technology for columnar products, specifically a surface defect detection device for columnar products. Background Technology

[0002] In the industrial production field, columnar products such as metal rods are widely used. Their surface defects (such as scratches, dents, oil residue, etc.) are directly related to product quality and service life. Therefore, surface defect detection is a key link in production quality control.

[0003] Traditional inspection methods rely heavily on manual visual inspection, which suffers from problems such as low efficiency (difficult to match the pace of large-scale production), high labor intensity, and high rates of missed and false detections (affected by human experience and fatigue), and can no longer meet the quality control needs of modern production.

[0004] With the development of automation technology, equipment for detecting surface defects of columnar products is gradually replacing manual labor. However, existing equipment still has many technical shortcomings: the surface of columnar products is often covered with contaminants such as oil and dust. If these contaminants are directly introduced into the testing process, they are easily misjudged as defects, which seriously interferes with the reliability of the test results.

[0005] Therefore, a surface defect detection device for columnar products is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a surface defect detection device for columnar products, which has the advantages of efficient pretreatment and accurate full-surface detection of columnar products.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a surface defect detection device for columnar products, comprising a transparent shell, a transparent turntable disposed inside the transparent shell, a rotation drive assembly connected to the bottom of the transparent turntable, a circumferentially evenly distributed positioning groove at the top edge of the transparent turntable, two industrial cameras disposed inside the transparent shell corresponding to the positioning grooves, the industrial cameras being connected to the transparent shell via brackets, a feed channel and a discharge channel respectively disposed on both sides of the transparent shell, a pushing assembly installed in both the feed channel and the discharge channel, a guide channel disposed below the pushing assembly, a conveyor belt disposed on one side of the transparent shell corresponding to the feed channel, a pre-treatment assembly mounted on the conveyor belt, and a discharge guide plate disposed on the transparent shell corresponding to the discharge channel.

[0008] Preferably, the rotary drive assembly includes a rotating column fixedly connected to the center of the bottom of the transparent turntable, a driven gear fixedly connected to the rotating column, a driving gear meshing with the driven gear, and a drive motor connected to the driving gear via a motor shaft.

[0009] Preferably, the pushing assembly includes an electric slide rail fixedly connected to a transparent shell, an electric slider slidably connected to the electric slide rail, a mounting frame fixedly connected to the bottom of the electric slider, a rotating rod provided inside the mounting frame, one end of the rotating rod rotatably connected to the mounting frame, and the other end passing through the mounting frame and connected to a small motor, a pushing plate fixedly connected to the bottom of the rotating rod, and the position structure of the pushing plate corresponding to the positioning groove.

[0010] Preferably, the conveyor belt is provided with positioning frames, with two adjacent positioning frames forming a group, and each group of positioning frames positioning a cylindrical product.

[0011] Preferably, the pretreatment component includes a fixed frame fixed on the conveyor belt, and the fixed frame is respectively provided with a rinsing structure and a drying structure, both of which are matched with the conveyor belt structure.

[0012] Preferably, the rinsing structure includes drain pipes arranged vertically and vertically on the inner side of the fixed frame. The drain pipes are respectively located on the inner side and the top of the conveyor belt. Multiple equidistant rinsing nozzles are installed on opposite sides of the drain pipes. One end of each drain pipe passes through the fixed frame and is connected to a water guide pipe. The end of the water guide pipe is connected to a water pump. The inlet of the water pump is connected to a water storage tank through a pipe.

[0013] Preferably, the top of the water storage tank is provided with a water inlet, and the front side of the water storage tank is provided with a liquid level window.

[0014] Preferably, the drying structure includes hot air ducts arranged vertically and vertically on the inner side of the fixed frame. The hot air ducts are respectively located on the inner side and above the conveyor belt. Multiple hot air outlets are installed on opposite sides of the hot air ducts. One end of each hot air duct passes through the fixed frame and is connected to a hot air pipeline. The end of the hot air pipeline is connected to a hot air blower, and the inlet of the hot air blower is connected to an air filter.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The rinsing structure in the pretreatment component of this utility model adopts drainage pipes and rinsing nozzles that are distributed vertically and vertically, which can simultaneously perform rinsing operations from the bottom and top of the columnar product, thoroughly removing oil, dust and other contaminants from the product surface, avoiding the interference of impurities on subsequent defect detection, providing clean surface conditions for accurate identification by industrial cameras, significantly improving the accuracy of defect detection, effectively reducing the false detection rate, and ensuring the reliability of detection results. 2. The drying structure of this utility model, through the upper and lower arranged hot air pipes and hot air outlets, can quickly and evenly dry the washed columnar products. At the same time, the hot air blower is equipped with an air filter, which can filter impurities in the air while ensuring drying efficiency, preventing secondary contamination of the product surface. The dried product surface is free of moisture residue, which not only avoids the impact of water stains on detection imaging, but also reduces the risk of oxidation of the product surface in humid environments, further improving the stability and accuracy of subsequent detection processes, enhancing the adaptability of the equipment to columnar products under different production conditions, and making the overall detection process smoother and more efficient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure inside the transparent outer shell of this utility model; Figure 3 This is a schematic diagram of the pretreatment component of this utility model; Figure 4 This is a schematic diagram of the pusher assembly of this utility model; Figure 5 This is a schematic diagram of the rotary drive assembly of this utility model.

[0017] In the picture: 1. Transparent outer shell; 2. Transparent turntable; 3. Rotary drive assembly; 31. Rotating column; 32. Driven gear; 33. Driving gear; 34. Drive motor; 4. Positioning slot; 5. Industrial camera; 6. Feed chute; 7. Discharge chute; 8. Pushing assembly; 81. Electric slide rail; 82. Electric slider; 83. Mounting bracket; 84. Rotating rod; 85. Small motor; 86. Pushing plate; 9. Feed chute; 10. Conveyor belt; 11. Pretreatment components; 111. Fixing frame; 112. Flushing structure; 1121. Drain pipe; 1122. Flushing nozzle; 1123. Water supply pipeline; 1124. Water pump; 1125. Water storage tank; 113. Drying structure; 1131. Hot air duct; 1132. Hot air outlet; 1133. Hot air pipeline; 1134. Hot air blower; 1135. Air filter; 12. Discharge guide plate; 13. Positioning frame. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1 to 5 As shown, this utility model provides a surface defect detection device for columnar products, including a transparent shell 1. The transparent shell 1 not only provides effective protection for the internal components but also facilitates real-time observation of the equipment's operating status by the operator. A transparent turntable 2 is installed inside the turntable 1. The turntable 2 is made of transparent material, which reduces light obstruction and improves imaging clarity in conjunction with the detection optical path. A rotation drive component 3 is connected to the bottom of the turntable 2. A circumferentially evenly distributed positioning groove 4 is formed at the top edge of the transparent turntable 2. The positioning groove 4 can precisely limit the columnar product, preventing product shaking or displacement during detection and ensuring imaging stability. Two industrial cameras 5 are installed inside the transparent shell 1 at positions corresponding to the positioning grooves 4. The two industrial cameras 5 capture images of the product surface from different angles, achieving 360° coverage without blind spots and avoiding detection blind zones. The industrial cameras 5 are connected to the transparent shell 1 via brackets. The transparent shell 1 has a feeding channel 6 and a discharging channel 7 on both sides, which work together to form a continuous material channel to ensure a smooth testing process. Both the feeding channel 6 and the discharging channel 7 are equipped with a pushing component 8, which can realize the automated transfer of products and reduce manual intervention. Below the pushing component 8, there is a guide channel 9, which can guide the products to enter or leave the positioning slot 4 smoothly to avoid product collision damage. On one side of the transparent shell 1, corresponding to the feeding channel 6, there is a conveyor belt 10, which realizes the continuous transport of products and improves the testing efficiency. A pre-treatment component 11 is installed on the conveyor belt 10, which can clean the product surface and provide good conditions for subsequent testing. On the transparent shell 1, corresponding to the discharging channel 7, there is a discharging guide plate 12, which guides the tested products to be output in an orderly manner, which is convenient for subsequent sorting.

[0020] Specifically, the rotary drive assembly 3 includes a rotating column 31 fixedly connected to the center of the bottom of the transparent turntable 2. The rotating column 31 provides stable support for the transparent turntable 2. A driven gear 32 is fixedly connected to the rotating column 31. The driven gear 32 is meshed with a driving gear 33. The driving gear 33 is connected to a drive motor 34 through a motor shaft. The gear transmission structure can ensure the stability and accuracy of the rotation of the transparent turntable 2. The drive motor 34 provides power to realize continuous turnover inspection of products and improve the operating efficiency of the equipment.

[0021] Furthermore, the pushing assembly 8 includes an electric slide rail 81 fixedly connected to the transparent housing 1. An electric slider 82 is slidably connected to the electric slide rail 81. A mounting frame 83 is fixedly connected to the bottom of the electric slider 82. A rotating rod 84 is provided inside the mounting frame 83. One end of the rotating rod 84 is rotatably connected to the mounting frame 83, and the other end passes through the mounting frame 83 and is connected to a small motor 85. A pushing plate 86 is fixedly connected to the bottom of the rotating rod 84. The position structure of the pushing plate 86 corresponds to the positioning groove 4. The electric slide rail 81 and the electric slider 82 cooperate to achieve precise translation of the pushing plate 86. The small motor 85 can drive the rotating rod 84 to adjust the angle of the pushing plate 86 so that it can be in a horizontal state and a vertical state respectively. The horizontal reset state can avoid interference between the pushing plate 86 and the columnar product, ensuring continuous and stable operation of the equipment.

[0022] Furthermore, the conveyor belt 10 is equipped with positioning frames 13. Two adjacent positioning frames 13 form a group, and each group of positioning frames 13 positions a cylindrical product. The positioning frames 13 can prevent the product from shifting or rolling during the conveying process, ensuring the accuracy of the product's position during pre-processing and entering the feed chute 6, laying the foundation for the consistency of subsequent inspection.

[0023] It is worth noting that the pretreatment component 11 includes a fixed frame 111 fixed on the conveyor belt 10. The fixed frame 111 provides a stable installation base for the rinsing structure 112 and the drying structure 113. The rinsing structure 112 and the drying structure 113 are respectively installed on the fixed frame 111. Both the rinsing structure 112 and the drying structure 113 are matched with the structure of the conveyor belt 10. The two work together to achieve integrated cleaning and drying of the product surface, avoiding impurities from interfering with the test results.

[0024] It is worth noting that the rinsing structure 112 includes drain pipes 1121 arranged vertically on the inner side of the fixed frame 111. The drain pipes 1121 are respectively located on the inner side and the top of the conveyor belt 10. Multiple equidistant rinsing nozzles 1122 are installed on opposite sides of the drain pipes 1121. The vertically distributed rinsing nozzles 1122 can rinse the product surface in all directions, thoroughly removing oil, dust and other impurities. One end of the drain pipe 1121 passes through the fixed frame 111 and is connected to a water guide pipe 1123. The end of the water guide pipe 1123 is connected to a water pump 1124. The water pump 1124 provides stable water pressure for rinsing to ensure rinsing effect. The inlet of the water pump 1124 is connected to a water storage tank 1125 through a pipe. The water storage tank 1125 provides a continuous water source for rinsing.

[0025] It is worth mentioning that the top of the water storage tank 1125 is equipped with a water inlet for convenient and timely replenishment of water. The front of the water storage tank 1125 is equipped with a liquid level window, which allows operators to observe the water level in real time and avoid affecting the pretreatment effect due to water shortage.

[0026] It is worth emphasizing that the drying structure 113 includes upper and lower corresponding hot air pipes 1131 arranged inside the fixed frame 111. The upper and lower corresponding hot air pipes 1131 are respectively located inside and above the conveyor belt 10. Multiple equally spaced hot air outlets 1132 are installed on opposite sides of the upper and lower corresponding hot air pipes 1131. The upper and lower distributed hot air outlets 1132 can quickly and evenly dry the rinsed products, avoiding water stains that may affect the imaging quality. One end of the hot air pipe 1131 passes through the fixed frame 111 and is connected to a hot air duct 1133. The end of the hot air duct 1133 is connected to a hot air blower 1134. The hot air blower 1134 provides stable hot air to ensure drying efficiency. The inlet of the hot air blower 1134 is connected to an air filter 1135, which can filter impurities in the air to prevent secondary contamination of the product surface during the drying process and further improve the pretreatment effect.

[0027] Among them, the drive motor 34, industrial camera 5, electric slide rail 81, small motor 85, water pump 1124, and hot air blower 1134 are existing technologies and will not be described in detail; at the same time, this utility model also includes power supply, controller and switch, etc., which are not the main technical points of this patent and will not be described in detail.

[0028] Working principle and process: The columnar product is placed on the conveyor belt 10. Each positioning frame 13 positions a single product. The product is conveyed to the pretreatment component 11 by the conveyor belt 10. First, it passes through the rinsing structure 112. This structure draws water from the water tank 1125 through the corresponding drain pipes 1121 and rinsing nozzles 1122, driven by the water pump 1124, to rinse the product surface from all directions to remove oil and dust. Then, the product is dried by the drying structure 113. The hot air blower 1134 filters the air through the air filter 1135 and blows hot air through the hot air pipe 1131 and hot air outlet 1132 to quickly and evenly dry the rinsed product, completing the pretreatment. The pretreated product is then conveyed to the pushing component 8 by the conveyor belt 10. At the corresponding position, the electric slide rail 81 of the pusher assembly 8 drives the electric slider 82 to move, and the small motor 85 drives the rotating rod 84 to make the pusher plate 86 vertical. The pusher plate 86 pushes the product through the guide groove 9 into the positioning groove 4 of the transparent turntable 2. The positioning groove 4 limits the product to prevent shaking. Then, the drive motor 34 of the rotation drive assembly 3 meshes with the driven gear 32 through the active gear 33, driving the rotating column 31 and the transparent turntable 2 to rotate. When the product rotates to the corresponding position of the industrial camera 5, the two industrial cameras 5 take pictures and detect the product surface from different angles. After the detection is completed, the transparent turntable 2 rotates the product to the discharge channel 7, and the pusher plate 86 of the other pusher assembly 8 pushes the product out of the positioning groove 4 and outputs it through the discharge guide plate 12.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] 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. A surface defect detection device for columnar products, comprising a transparent housing (1), characterized in that: A transparent turntable (2) is provided inside the transparent shell (1). A rotary drive assembly (3) is connected to the bottom of the transparent turntable (2). A positioning groove (4) is evenly distributed in a circumferential direction at the top edge of the transparent turntable (2). Two industrial cameras (5) are provided in the transparent shell (1) at positions corresponding to the positioning grooves (4). The industrial cameras (5) are connected to the transparent shell (1) through brackets. A feeding channel (6) and a discharging channel (7) are provided on both sides of the transparent shell (1). A pushing assembly (8) is installed in both the feeding channel (6) and the discharging channel (7). A guide groove (9) is provided below the pushing assembly (8). A conveyor belt (10) is provided on one side of the transparent shell (1) at a position corresponding to the feeding channel (6). A pre-processing assembly (11) is installed on the conveyor belt (10). A discharge guide plate (12) is provided on the transparent shell (1) at a position corresponding to the discharging channel (7).

2. The surface defect detection device for columnar products according to claim 1, characterized in that: The rotary drive assembly (3) includes a rotating column (31) fixedly connected to the center of the bottom of the transparent turntable (2). The rotating column (31) is fixedly connected to a driven gear (32). The driven gear (32) is meshed with a driving gear (33). The driving gear (33) is connected to a drive motor (34) via a motor shaft.

3. The surface defect detection device for columnar products according to claim 1, characterized in that: The pusher assembly (8) includes an electric slide rail (81) fixedly connected to the transparent shell (1), an electric slider (82) slidably connected to the electric slide rail (81), a mounting frame (83) fixedly connected to the bottom of the electric slider (82), a rotating rod (84) is provided inside the mounting frame (83), one end of the rotating rod (84) is rotatably connected to the mounting frame (83), and the other end passes through the mounting frame (83) and is connected to a small motor (85). A pusher plate (86) is fixedly connected to the bottom of the rotating rod (84), and the position structure of the pusher plate (86) corresponds to the positioning groove (4).

4. The surface defect detection device for columnar products according to claim 1, characterized in that: The conveyor belt (10) is equipped with positioning frames (13), and two adjacent positioning frames (13) form a group. Each group of positioning frames (13) positions a cylindrical product.

5. The surface defect detection device for columnar products according to claim 1, characterized in that: The pretreatment component (11) includes a fixed frame (111) fixed on the conveyor belt (10), and a rinsing structure (112) and a drying structure (113) are respectively provided on the fixed frame (111), and the rinsing structure (112) and the drying structure (113) are both matched with the structure of the conveyor belt (10).

6. The surface defect detection device for columnar products according to claim 5, characterized in that: The flushing structure (112) includes drain pipes (1121) arranged vertically on the inner side of the fixed frame (111). The drain pipes (1121) are respectively located on the inner side and the top of the conveyor belt (10). Multiple flushing nozzles (1122) are installed on opposite sides of the drain pipes (1121). One end of the drain pipe (1121) passes through the fixed frame (111) and is connected to a water guide pipe (1123). The end of the water guide pipe (1123) is connected to a water pump (1124). The inlet of the water pump (1124) is connected to a water storage tank (1125) through a pipe.

7. The surface defect detection device for columnar products according to claim 6, characterized in that: The top of the water storage tank (1125) is provided with a water inlet, and the front side of the water storage tank (1125) is provided with a liquid level window.

8. The surface defect detection device for columnar products according to claim 5, characterized in that: The drying structure (113) includes hot air pipes (1131) arranged vertically on the inner side of the fixed frame (111). The hot air pipes (1131) are respectively located on the inner side and the top of the conveyor belt (10). Multiple hot air outlets (1132) are installed on opposite sides of the hot air pipes (1131). One end of the hot air pipe (1131) passes through the fixed frame (111) and is connected to a hot air pipeline (1133). The end of the hot air pipeline (1133) is connected to a hot air blower (1134). The inlet of the hot air blower (1134) is connected to an air filter (1135).

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