Conveying device for aluminum plate strip surface detection

Abstract

The invention relates to the field of aluminum plate strip detection equipment, in particular to an aluminum plate strip surface detection conveying device which comprises a friction assembly. The friction assembly intervenes in an aluminum plate strip conveying path between the detection mechanism and the winding mechanism, the friction force borne by the aluminum plate strip can be adjusted in real time, the winding tension change of the winding mechanism is counteracted, and transmission of winding tension fluctuation to a detection area is isolated, so that the tension of the aluminum plate strip in the detection area is constant, and the detection efficiency is improved. The aluminum strip is effectively prevented from shaking or deviating due to tension change, and it is ensured that the detection environment of the detection mechanism for the surface defects of the aluminum strip is stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aluminum plate strip detection equipment, in particular to an aluminum plate strip surface detection conveying device. BACKGROUND

[0002] The aluminum plate strip surface detection conveying device is a key equipment to ensure the quality and safety of aluminum plate strip products, and is widely used in the fields of aerospace, automobile manufacturing, electronic household appliances, etc., to assist in screening the size deviation and surface defects of aluminum plate strips, so as to avoid unqualified products flowing into the downstream. When working, the device drives the aluminum plate strip to pass through the detection area at a constant speed, cooperates with the laser thickness measuring module, visual imaging assembly and eddy current flaw detection unit to synchronously collect size and appearance data, transmits the data to the control system in real time for automatic analysis and comparison, triggers an alarm and marks the defect position in real time when the data exceeds the standard, facilitates the staff to quickly handle, ensures the precision and stability of aluminum plate strip products, and meets the production and detection needs in the fields of aviation, electronics, building materials, etc.

[0003] However, in the winding process, in order to ensure that the winding is neat and avoid wrinkles or broken strips, the winding tension needs to be dynamically adjusted according to the change of the aluminum plate strip winding diameter. The fluctuation of the winding tension will directly cause the aluminum plate strip to shake and deviate, especially for thin aluminum plate strips, which are more likely to shake obviously. When the aluminum plate strip shakes, it will cause the imaging of the surface detection camera to be blurred and the defect positioning to be deviated, reducing the recognition accuracy of defects such as scratches and oxidation spots, affecting the product quality control, and possibly causing unqualified products to flow into the downstream and causing quality disputes. SUMMARY

[0004] Therefore, it is necessary to provide an aluminum plate strip surface detection conveying device to solve the problem of reduced surface detection accuracy caused by aluminum plate strip shaking in the winding process of the existing aluminum plate strip surface detection conveying device.

[0005] The above-mentioned purpose is achieved by the following technical solutions: An aluminum plate strip surface detection conveying device, comprising: A unwinding mechanism for releasing the aluminum plate strip.

[0006] A winding mechanism for winding the aluminum plate strip.

[0007] A detection mechanism for detecting surface defects of the aluminum plate strip, the detection mechanism having a fixed detection area in the conveying path of the aluminum plate strip.

[0008] A friction assembly arranged between the detection mechanism and the winding mechanism in the conveying path of the aluminum plate strip, for adjusting the friction force received by the aluminum plate strip, so as to isolate the conduction of the change of the winding tension of the winding mechanism to the detection area.

[0009] Further, the fixed frame is further included, the friction assembly includes a friction shaft, a friction wheel and an adjusting structure, the friction shaft is fixedly connected to the fixed frame; the friction wheel is coaxially sleeved outside the friction shaft and in contact with the aluminum plate belt; the adjusting structure is used for adjusting the relative rotation friction force between the friction wheel and the friction shaft.

[0010] Further, the adjusting structure includes an elastic member and a starting device, the elastic member is arranged between the friction shaft and the friction wheel, and the volume of the elastic member can be changed; the starting device is used for adjusting the volume of the elastic member.

[0011] Further, the adjusting structure further includes a friction layer, one side of the friction layer is in close contact with the elastic member, and the other side is in close contact with the inner wall of the friction wheel.

[0012] Further, the first tensioning assembly and the second tensioning assembly are sequentially arranged on the conveying path of the aluminum plate belt and are both used for maintaining the tensioning state of the aluminum plate belt; the damping assembly is used for absorbing the vibration of the aluminum plate belt generated by the first tensioning assembly and the second tensioning assembly and blocking the conduction of the vibration to the detection area.

[0013] Further, the second tensioning assembly includes a second tensioning wheel and a second counterweight, the outer wall of the second tensioning wheel is in contact with the aluminum plate belt, and the second counterweight is hung at the lower end of the second tensioning wheel and is rotationally connected with the second tensioning wheel; the damping assembly is used for providing resistance to the movement of the second counterweight.

[0014] Further, the first tensioning assembly includes a first tensioning wheel and a first counterweight, the outer wall of the first tensioning wheel is in contact with the aluminum plate belt, and the first counterweight is hung at the lower end of the first tensioning wheel and is rotationally connected with the first tensioning wheel; when the first tensioning wheel and the second tensioning wheel are in the same horizontal plane, the aluminum plate belts on both sides of the first tensioning wheel and the second tensioning wheel have the same inclination angle with the vertical direction.

[0015] Further, the damping assembly includes a damping cylinder, a damping rod and a rotating structure, the outer wall of the damping cylinder is fixedly connected with the second counterweight; the damping rod is coaxially and slidingly connected with the damping cylinder; the rotating structure is used for adjusting the damping force of the relative movement between the damping cylinder and the damping rod.

[0016] Furthermore, the rotating structure includes a first piston plate, a second piston plate, and a drive motor. The first piston plate is coaxially fixedly connected to one end of the damping rod located inside the damping cylinder, and a first damping hole is provided on the first piston plate. The second piston plate is rotatably connected to one end of the damping rod located inside the damping cylinder, and the upper wall surface of the second piston plate is in contact with the lower wall surface of the first piston plate. A second damping hole is provided on the second piston plate. The drive motor is used to drive the first piston plate and the second piston plate to rotate relative to each other to adjust the overlap area of ​​the first damping hole and the second damping hole. The overlap area of ​​the first damping hole and the second damping hole is inversely related to the damping force of the relative movement of the damping cylinder and the damping rod.

[0017] Furthermore, the rotation structure also includes a limiting unit, which is used to limit the rotation of the second piston plate relative to the damping cylinder.

[0018] The beneficial effects of this invention are: This invention provides a conveying device for surface inspection of aluminum strip, comprising a friction assembly. The friction assembly is located between the inspection mechanism and the winding mechanism in the aluminum strip conveying path. It generates a counterforce by adjusting the frictional force acting on the aluminum strip. When the winding tension of the winding mechanism increases, the friction assembly simultaneously increases the frictional force on the aluminum strip, which counteracts the increased winding tension. When the winding tension decreases, the friction assembly correspondingly decreases the frictional force, maintaining a constant tension of the aluminum strip in the inspection area. Thus, the friction assembly blocks the transmission of changes in the winding tension of the winding mechanism to the inspection area, avoiding swaying of the aluminum strip due to tension fluctuations, ensuring a relatively stable positional relationship between the inspection area of ​​the inspection mechanism and the surface of the aluminum strip, and significantly improving the accuracy of surface defect detection of the aluminum strip. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a conveying device for surface inspection of aluminum sheet and strip provided in an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 1 The front view of the structure shown; Figure 4 for Figure 1 Top view of the structure shown; Figure 5 for Figure 4 Cross-sectional view along the BB direction; Figure 6 for Figure 5 A magnified view of a section at point C; Figure 7 forFigure 5 A magnified view of a section at point D; Figure 8 This is a partially enlarged view of the damping rod in a conveying device for surface inspection of aluminum sheet and strip provided in an embodiment of the present invention.

[0020] in: 110. Fixing frame; 210. Unwinding roller; 220. Rewinding roller; 230. Conveyor roller; 240. Friction roller; 241. Friction shaft; 242. Elastic airbag; 243. Friction layer; 250. First tensioning roller; 251. First counterweight; 260. Second tensioning roller; 261. Second counterweight; 270. Damping cylinder; 280. Damping rod; 281. First piston plate; 282. Second piston plate; 310. Camera; 320. Fill light. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0022] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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 limiting the invention.

[0023] In this invention, 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," "over," and "on top" of 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.

[0024] The following reference Figures 1 to 8The present invention describes a conveying device for surface inspection of aluminum sheet and strip, which includes a fixed frame 110, an unwinding mechanism, a winding mechanism, an inspection mechanism, and a friction assembly.

[0025] Specifically, the mounting bracket 110 is a frame structure that is fixedly placed on the ground or other fixed support surface to provide a stable installation base for other components.

[0026] The unwinding mechanism includes an unwinding roller 210, whose two ends are rotatably connected to a fixed frame 110. This ensures stable unwinding and conveying of the aluminum strip, providing a continuous supply of aluminum strip for subsequent inspection and rewinding processes. The rewinding mechanism includes a rewinding roller 220, whose two ends are rotatably connected to the fixed frame 110. This rewinding roller is used to orderly rewind the inspected aluminum strip, ensuring the regularity of the rewinding process. Multiple conveyor rollers 230 are also rotatably mounted on the fixed frame 110. These conveyor rollers 230 are evenly arranged according to a preset conveying path for the aluminum strip, and both ends of each conveyor roller 230 are rotatably connected to the fixed frame 110. The multiple conveyor rollers 230 assist in supporting and guiding the aluminum strip, ensuring that the aluminum strip maintains the preset conveying path during unwinding, inspection, and rewinding, and preventing strip deviation. The unwinding roller 210, rewinding roller 220, and conveyor rollers 230 all extend horizontally in a forward-backward direction. The forward-backward direction is... Figure 3 The front and back directions in the middle.

[0027] The inspection mechanism includes a camera 310 and a supplementary light 320. The camera 310 is fixedly mounted on the mounting frame 110, and its illumination area corresponds to the preset inspection area of ​​the aluminum strip. The camera 310 is used to accurately capture defect image information on the surface of the aluminum strip. The supplementary light 320 is fixedly mounted on the mounting frame 110 and corresponds to the inspection area of ​​the camera 310. It is used to provide uniform and sufficient illumination to the inspection area, eliminate the interference of light and shadow on defect identification, and ensure the image clarity of the camera 310.

[0028] The friction assembly includes a friction shaft 241, a friction wheel 240, and an adjustment structure.

[0029] The friction shaft 241 is fixedly connected to the fixing frame 110, and its extension direction is parallel to the axis of the take-up reel 220. The friction shaft 241 is located between the detection area and the take-up reel 220. The friction wheel 240 is coaxially sleeved on the outside of the friction shaft 241, and its outer surface is in close contact with the aluminum strip.

[0030] The adjustment structure includes an elastic element, a sensor (not shown in the figure), a starting device (not shown in the figure), and a friction layer 243. The adjustment structure is used to adjust the relative rotational friction between the friction wheel 240 and the friction shaft 241. The elastic element is configured as an elastic airbag 242, the volume of which can be varied by the amount of air inflated. The elastic airbag 242 is completely positioned between the friction shaft 241 and the friction wheel 240. The sensor is fixedly mounted on the winding reel 220 and is used to detect the diameter of the aluminum strip on the winding reel 220 in real time. The starting device is configured as a miniature air pump, which is connected to the elastic airbag 242 via a sealed pipeline. Based on the diameter data of the aluminum strip on the winding reel 220 detected by the sensor, the miniature air pump can automatically inflate or deflate the elastic airbag 242 quantitatively. One side wall of the friction layer 243 is in close frictional contact with the inner wall of the friction wheel 240, and the other side wall of the friction layer 243 is in close contact with the elastic airbag 242. The friction layer 243 is used to enhance the friction transmission efficiency between the elastic airbag 242 and the friction wheel 240.

[0031] The aluminum strip is guided sequentially through the unwinding roller 210, multiple conveying rollers 230, and friction rollers 240 to the winding roller 220, forming a continuous and stable conveying path. As the number of winding layers of the aluminum strip continuously increases during winding, the winding tension and winding diameter of the winding roller 220 are positively correlated. Sensors detect changes in the winding diameter of the winding roller 220 in real time and synchronously transmit the diameter signal to a micro-pump. The micro-pump inflates the elastic airbag 242 according to the diameter information. The volume of the elastic airbag 242 expands precisely with the inflation amount, generating uniform and continuous radial pressure on the tightly fitted friction layer 243. The friction layer 243 directly transmits this pressure to the inner wall of the friction roller 240, increasing the relative rotational friction between the friction roller 240 and the friction shaft 241. The increased friction counteracts the increased winding tension of the winding wheel 220, preventing the transmission of winding tension changes to the detection area. This ensures that the aluminum strip maintains a constant tension in the detection area, preventing lateral swaying of the aluminum strip due to tension fluctuations and ensuring the accuracy of the camera 310 in detecting surface scratches, inclusions, and other defects in the aluminum strip.

[0032] Understandably, the friction layer 243 can be made of wool felt. Wool felt possesses inherent characteristics of high density and high elasticity, while also exhibiting excellent wear resistance and a stable coefficient of friction. The wool felt friction layer 243 can form a tight and uniform contact with the elastic airbag 242 and the inner wall of the friction wheel 240, ensuring the stability and continuity of frictional force transmission. Simultaneously, the wear-resistant properties of wool felt ensure that the coefficient of friction of the friction layer 243 remains constant during long-term use, preventing a decrease in adjustment accuracy due to wear.

[0033] In one embodiment, the conveying device for surface inspection of aluminum strip provided by the present invention further includes a first tensioning component, a second tensioning component, and a damping component. The first tensioning component and the second tensioning component are arranged sequentially along the conveying path of the aluminum strip to maintain the tension of the aluminum strip. The damping component is used to absorb the vibration of the aluminum strip caused by the tension change of the unwinding roller 210 and block the vibration from being transmitted to the inspection area.

[0034] Specifically, the first tensioning assembly includes a first tensioning roller 250 and a first counterweight 251. The first tensioning roller 250 is positioned on the conveying path between the detection area and the unwinding roller 210, and is placed on the aluminum strip with its outer wall in close contact with the surface of the aluminum strip. The first counterweight 251 is suspended from the lower end of the first tensioning roller 250, and both ends are stably rotatably connected to the two ends of the first tensioning roller 250. The weight of the first counterweight 251 is transmitted to the first tensioning roller 250, providing a continuous and constant downward pressure to the first tensioning roller 250.

[0035] The second tensioning assembly includes a second tensioning roller 260 and a second counterweight 261. The second tensioning roller 260 is positioned on the conveying path between the first tensioning roller 250 and the detection area, and its outer wall is tightly fitted to the surface of the aluminum strip. The second counterweight 261 is suspended from the lower end of the second tensioning roller 260, and both ends are stably rotatably connected to the two ends of the second tensioning roller 260. The weight of the second counterweight 261 is transmitted to the second tensioning roller 260, providing a continuous and constant downward pressure to the second tensioning roller 260.

[0036] The damping component provides resistance to the axial movement of the second counterweight 261, ensuring that the second counterweight 261 moves smoothly.

[0037] When the unwinding tension of the unwinding roller 210 changes, the length of the aluminum strip unwound per unit time changes. The first tensioning roller 250 moves automatically along the axial direction under the constant gravity of the first counterweight 251, and compensates for the change in the length of the aluminum strip by adjusting its position, thus maintaining the basic tension of the aluminum strip.

[0038] As the first tensioning roller 250 moves axially, the pressure between it and the aluminum strip fluctuates. When the first tensioning roller 250 rises, the pressure on the aluminum strip decreases instantaneously; when it falls, the pressure on the aluminum strip increases instantaneously. This pressure fluctuation directly causes the aluminum strip to vibrate. At the same time, changes in the length of the aluminum strip itself also generate vibration, and both vibrations are transmitted synchronously to the second tensioning roller 260.

[0039] When the vibration is transmitted to the second tensioning roller 260, the second tensioning roller 260 first moves axially as the tension of the aluminum strip changes. At this time, the damping component provides resistance, slowing down the axial movement speed of the second tensioning roller 260 and weakening the vibration generated by its movement. On the other hand, the damping component can absorb the vibration energy transmitted to the second tensioning roller 260 from the front end through the second counterweight 261, canceling out the vibration generated by the movement of the first tensioning roller 250 and the vibration generated by the change in the length of the aluminum strip. This achieves smooth conveying of the aluminum strip in the detection area, prevents the aluminum strip from shifting or swaying due to vibration, provides a constant and stable detection environment for the defect detection of the camera 310, and ensures the accuracy of the detection results.

[0040] Furthermore, as the unwinding process continues, the number of layers of aluminum strip wound on the unwinding roller 210 decreases, and the diameter of the unwinding roller 210 gradually decreases. To ensure that the aluminum strip maintains basic tension during unwinding, the unwinding tension of the unwinding roller 210 gradually increases, thereby causing the vibration amplitude of the aluminum strip to gradually increase. Based on this, the damping force of the damping component on the second counterweight 261 can be adjusted to adapt to the vibration reduction requirements under different tensions.

[0041] Specifically, the damping assembly includes a damping cylinder 270, a damping rod 280, and a rotating structure. The damping cylinder 270 is a hollow cavity structure, with its inner wall completely filled with incompressible fluid. The damping cylinder 270 extends vertically, and its outer wall is fixedly connected to the second counterweight 261, ensuring that the damping force can be directly transmitted to the second counterweight 261. The damping rod 280 is vertically fixed at the bottom of the fixing frame 110, and is axially and slidably connected to the cavity of the damping cylinder 270. The axial relative movement between the damping rod 280 and the damping cylinder 270, along with the flow of fluid within the damping cylinder 270, forms a damping engagement, used to absorb vibration energy through fluid resistance.

[0042] The rotating structure includes a first piston plate 281, a second piston plate 282, a drive motor (not shown in the figure), and a limiting unit. The first piston plate 281 is coaxially fixedly connected to one end of the damping rod 280 located within the damping cylinder 270. The first piston plate 281 has a first damping hole penetrating both ends of its surface. The first damping hole has a fan-shaped structure and gradually increases in size along the circumferential dimension of the first piston plate 281. The second piston plate 282 is coaxially rotatably connected to one end of the damping rod 280 located within the damping cylinder 270, and the upper wall of the second piston plate 282 is completely in contact with the lower wall of the first piston plate 281. The second piston plate 282 has a second damping hole penetrating both ends of its surface. The second damping hole gradually increases in size along the axial dimension of the second piston plate 282. The first damping hole and the second damping hole together form a channel for fluid flow within the damping cylinder 270. The output end of the drive motor is fixedly connected to the damping rod 280, which drives the first piston plate 281 to rotate relative to the second piston plate 282. This rotation changes the overlap area of ​​the first and second damping holes, thereby adjusting the damping force. The overlap area of ​​the first and second damping holes is inversely related to the damping force of the relative movement between the damping cylinder 270 and the damping rod 280; the smaller the overlap area, the greater the damping force. The limiting unit includes a limiting block and a limiting groove. The limiting block is fixedly mounted on the outer wall of the second piston plate 282, and the limiting groove is formed on the inner wall of the damping cylinder 270. The opening of the limiting groove faces inward and extends axially along the damping cylinder 270. The limiting block is always embedded in the limiting groove, forming a sliding limiting fit to prevent rotational deviation of the second piston plate 282.

[0043] As the unwinding tension of the unwinding roller 210 gradually increases, the drive motor drives the damping rod 280 to rotate. Since the limiting block on the second piston plate 282 is embedded in the limiting groove and cannot rotate, the damping rod 280 causes the first piston plate 281 to rotate relative to the second piston plate 282, gradually reducing the overlap area between the first and second damping holes. The fluid in the damping cylinder 270 can only flow through the overlapping damping hole channels. The reduced overlap area directly leads to increased fluid flow resistance, thus synchronously increasing the relative movement damping force between the damping cylinder 270 and the damping rod 280. This achieves precise matching between the damping force and the increased tension of the unwinding roller 210, ensuring that vibration energy is absorbed to a large extent and maintaining stable transport of the aluminum strip in the detection area.

[0044] Furthermore, when the first tensioning roller 250 and the second tensioning roller 260 are on the same horizontal plane, the aluminum strips on both sides of the first tensioning roller 250 and the aluminum strips on both sides of the second tensioning roller 260 form the same tilt angle with the vertical direction, so that the first tensioning roller 250 and the second tensioning roller 260 can automatically move to the same horizontal plane, thereby increasing the buffer movement of the first tensioning roller 250 and the second tensioning roller 260.

[0045] Specifically, if the aluminum strips on both sides of the first tensioning roller 250 and the second tensioning roller 260 are both vertically downward, the force exerted by the aluminum strips on both sides of the first tensioning roller 250 is always completely balanced with the weight of the first counterweight 251, and the force exerted by the aluminum strips on both sides of the second tensioning roller 260 is also always completely balanced with the weight of the second counterweight 261. No axial relative movement will occur between the first tensioning roller 250 and the second tensioning roller 260. Furthermore, when the first tensioning roller 250 or the second tensioning roller 260 moves to the edge of the preset stroke, its axial movement will be limited by the mechanical structure, preventing further length compensation.

[0046] When the tension change of the unwinding roller 210 causes the first tensioning roller 250 to move upward, the angle between the aluminum strips on both sides of the first tensioning roller 250 and the vertical direction increases synchronously. The force exerted by the aluminum strips on the first tensioning roller 250 increases with the increase of the angle, and this force forms a new force balance with the weight of the first counterweight 251. At the same time, the increased force of the aluminum strips on both sides of the first tensioning roller 250 is transmitted to both sides of the second tensioning roller 260 through the tension of the aluminum strips, causing the force of the aluminum strips on both sides of the second tensioning roller 260 to increase synchronously. The force of the aluminum strips on both sides of the second tensioning roller 260 is greater than the weight of the second counterweight 261, and the second tensioning roller 260 moves upward under the drive of this increased force. As the second tensioning roller 260 moves upward, the angle between the aluminum strips on both sides of it and the vertical direction gradually increases until the force of the aluminum strips on both sides of the second tensioning roller 260 and the weight of the second counterweight 261 are rebalanced. During this process, the first tensioning roller 250 receives tension buffering due to the upward movement of the second tensioning roller 260, suppressing its upward movement tendency and reducing its upward displacement. Finally, when the aluminum strips on both sides of the first and second tensioning rollers 250 and 260 have the same angle of inclination with the vertical direction, the force states of the first and second tensioning rollers 250 and 260 are consistent, thus automatically moving to the same horizontal plane and forming a stable, interconnected equilibrium state.

[0047] Similarly, when the tension change of the unwinding roller 210 causes the first tensioning roller 250 to move downwards, the angle of inclination of the aluminum strips on both sides of the first tensioning roller 250 with respect to the vertical direction decreases simultaneously, and the force exerted by the aluminum strips on the first tensioning roller 250 decreases accordingly. This reduced force is transmitted through the aluminum strips to both sides of the second tensioning roller 260, causing the force on both sides of the second tensioning roller 260 to decrease simultaneously. Because the force exerted by the aluminum strips on both sides of the second tensioning roller 260 is less than the weight of the second counterweight 261, the second tensioning roller 260 moves downwards until it is rebalanced with the weight of the second counterweight 261. At the same time, the downward displacement of the first tensioning roller 250 decreases, and finally the angles of inclination of the aluminum strips on both sides of the first tensioning roller 250 and the second tensioning roller 260 with respect to the vertical direction become equal, automatically moving to the same horizontal plane.

[0048] Therefore, the first tensioning roller 250 and the second tensioning roller 260 have sufficient axial movement space, which increases the buffer movement of the first tensioning roller 250 and the second tensioning roller 260, avoids tension compensation failure due to limited movement, and ensures that the aluminum strip maintains a constant tension state throughout the entire conveying process, providing a basic guarantee for the accuracy of detection.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A conveying device for surface inspection of aluminum sheet and strip, characterized in that, include: An unwinding mechanism for releasing aluminum sheet / strip; A winding mechanism for winding aluminum sheet and strip; The testing mechanism is used to detect surface defects in aluminum strips and has a fixed testing area in the conveying path of the aluminum strips. A friction assembly is disposed between the detection mechanism and the winding mechanism in the conveying path of the aluminum strip. It is used to adjust the friction force on the aluminum strip to isolate the transmission of the winding tension change of the winding mechanism to the detection area.

2. The conveying device for surface inspection of aluminum sheet and strip according to claim 1, characterized in that, It also includes a fixing frame. The friction assembly includes a friction shaft, a friction wheel, and an adjustment structure. The friction shaft is fixedly connected to the fixing frame. The friction wheel is coaxially sleeved outside the friction shaft and contacts the aluminum plate strip. The adjustment structure is used to adjust the relative rotational friction between the friction wheel and the friction shaft.

3. The conveying device for surface inspection of aluminum sheet and strip according to claim 2, characterized in that, The adjustment structure includes an elastic element and a starting device. The elastic element is disposed between the friction shaft and the friction wheel, and the volume of the elastic element can change. The starting device is used to adjust the volume of the elastic element.

4. The conveying device for surface inspection of aluminum sheet and strip according to claim 3, characterized in that, The adjustment structure also includes a friction layer, one side of which is in close contact with the elastic element and the other side is in close contact with the inner wall of the friction wheel.

5. The conveying device for surface inspection of aluminum sheet and strip according to claim 1, characterized in that, It also includes a first tensioning component, a second tensioning component, and a damping component. The first tensioning component and the second tensioning component are sequentially arranged on the conveying path of the aluminum strip and are both used to maintain the tension of the aluminum strip. The damping component is used to absorb the vibration of the aluminum strip generated by the first tensioning component and the second tensioning component and block the transmission of vibration to the detection area.

6. The conveying device for surface inspection of aluminum sheet and strip according to claim 5, characterized in that, The second tensioning assembly includes a second tensioning wheel and a second counterweight. The outer wall of the second tensioning wheel is attached to the aluminum strip, and the second counterweight is suspended from the lower end of the second tensioning wheel and rotatably connected to the second tensioning wheel. The damping assembly is used to provide resistance to the movement of the second counterweight.

7. The conveying device for surface inspection of aluminum sheet and strip according to claim 6, characterized in that, The first tensioning assembly includes a first tensioning wheel and a first counterweight. The outer wall of the first tensioning wheel is in contact with the aluminum strip. The first counterweight is suspended at the lower end of the first tensioning wheel and is rotatably connected to the first tensioning wheel. When the first tensioning wheel and the second tensioning wheel are on the same horizontal plane, the aluminum strips on both sides of the first tensioning wheel and the second tensioning wheel have the same angle of inclination with the vertical direction.

8. The conveying device for surface inspection of aluminum sheet and strip according to claim 6, characterized in that, The damping assembly includes a damping cylinder, a damping rod, and a rotating structure. The outer wall of the damping cylinder is fixedly connected to the second counterweight. The damping rod is slidably connected to the damping cylinder on the same axis. The rotating structure is used to adjust the damping force of the relative movement of the damping cylinder and the damping rod.

9. The conveying device for surface inspection of aluminum sheet and strip according to claim 8, characterized in that, The rotating structure includes a first piston plate, a second piston plate, and a drive motor. The first piston plate is coaxially fixedly connected to one end of the damping rod located inside the damping cylinder, and a first damping hole is provided on the first piston plate. The second piston plate is rotatably connected to one end of the damping rod located inside the damping cylinder, and the upper wall surface of the second piston plate is in contact with the lower wall surface of the first piston plate. A second damping hole is provided on the second piston plate. The drive motor is used to drive the first piston plate and the second piston plate to rotate relative to each other to adjust the overlap area of ​​the first damping hole and the second damping hole. The overlap area of ​​the first damping hole and the second damping hole is inversely related to the damping force of the relative movement of the damping cylinder and the damping rod.

10. The conveying device for surface inspection of aluminum sheet and strip according to claim 9, characterized in that, The rotating structure also includes a limiting unit, which is used to limit the rotation of the second piston plate relative to the damping cylinder.

Images