An aluminum foil surface flaw detection device

Abstract

The utility model relates to the field of aluminium foil detection, it discloses an aluminium foil surface flaw detection device, including the detection frame, be provided with clamping assembly on the detection frame, clamping assembly sets up two along the vertical direction, the position of clamping assembly in the lower part is immobile, the clamping assembly in the upper part can move along the vertical direction, clamping assembly includes the support body, two slide blocks and two lugs are set up along the same horizontal direction sliding on the support body, two slide blocks are located between two lugs, set up spring no.

Description

Technical Field

[0001] This utility model relates to the field of aluminum foil inspection, specifically to an aluminum foil surface defect detection device. Background Technology

[0002] As modern consumer electronics (such as mobile phones and AI servers) and new energy sources (such as photovoltaic inverters, car chargers, and in-vehicle displays) are designed for miniaturization, there is a growing demand for capacitors that are smaller in size yet offer higher capacitance. Therefore, electrolytic capacitors are also evolving towards higher capacitance and miniaturization. High-specific-capacitance aluminum foil is one of the raw materials for capacitor production. After production, it requires surface defect inspection to ensure the aluminum foil meets quality standards.

[0003] In existing technologies, aluminum foil is mostly inspected visually or with the aid of equipment. For example, Chinese utility model patent CN221377761U discloses an aluminum foil surface inspector that uses light refracted through the device onto the tin foil on the inspection table to quickly detect pinholes on the aluminum foil itself and quickly identify defective aluminum foil, thus achieving the detection of surface defects of aluminum foil. However, when applied to the inspection of high specific volume aluminum foil, there are some shortcomings. Specifically, aluminum foil is thin and flexible, so during the inspection process, it is very easy for wrinkles to appear on the surface of the aluminum foil due to improper clamping. Wrinkles will have a significant impact on the accuracy of the inspection results.

[0004] Based on the above problems, this utility model proposes a device for detecting defects on the surface of aluminum foil. Utility Model Content

[0005] To address the problems mentioned in the background above, this utility model provides an aluminum foil surface defect detection device.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows.

[0007] An aluminum foil surface defect detection device includes a detection frame with clamping components. Two clamping components are arranged vertically, with the lower clamping component remaining stationary and the upper clamping component being movable vertically. The clamping assembly includes a support body, on which slides a slide block and a lug are slidably arranged in the same horizontal direction, and there are two of each. The two slide blocks are located between the two lugs. A second spring is arranged between the lug and the slide block. A third spring is arranged on the side of the lug away from the slide block. There are two of each of the second and third springs. The spring force coefficient of the second spring is greater than that of the third spring. A clamping unit is provided on one side of the lug, and there are two clamping units in the same clamping assembly.

[0008] Furthermore, the testing frame is equipped with a vertically arranged guide rod and a lead screw. The input end of the lead screw is connected to a motor. A lifting seat is provided on the outside of the lead screw, and the lifting seat and the guide rod form a sliding connection. The support body of the lower clamping assembly is fixedly connected to the guide rod, and the support body of the upper clamping assembly is slidably connected to the guide rod. The support body of the upper clamping assembly is located above the lifting seat and a spring is provided between the two.

[0009] Furthermore, the lifting platform is equipped with a sensor for real-time monitoring of the spring force.

[0010] Furthermore, the support body is provided with a horizontally arranged and parallel guide rod 2 and a lead screw 2. The input end of the lead screw 2 is powered by a motor 2. The lead screw 2 is divided into two threaded segments with opposite thread directions along the axis. The two threaded segments are respectively connected to two slides. The slides and the guide rod 2 form a sliding connection. The lug and the guide rod 2 form a sliding connection.

[0011] Furthermore, a sensor is installed on the slide to monitor the magnitude of the spring force in real time.

[0012] Furthermore, the clamping unit includes a clamping seat 1 connected to the lug and a clamping seat 2 located on the side of the clamping seat 1 away from the lug. The clamping seat 1 is provided with a guide hole, and the clamping seat 2 is provided with a connecting rod. The end of the connecting rod passes through the guide hole and is provided with a fixing ring. A driving component is provided between clamp one and clamp two to drive clamp two closer to clamp one.

[0013] Furthermore, the driving component includes an electromagnet and a second magnet embedded in the side of the clamping seat 1 facing the clamping seat 2, and a first magnet embedded in the side of the clamping seat 2 facing the clamping seat 1. There is a magnetic repulsion between the first magnet and the second magnet, and a magnetic attraction between the electromagnet and the first magnet when the electromagnet is energized. The magnetic attraction is greater than the magnetic repulsion.

[0014] Furthermore, a protruding strip is provided on the side of clamp one facing clamp two.

[0015] Compared with the prior art, the advantages of this utility model are as follows: This solution uses the cooperation of two clamping units in the same clamping assembly to flatten and tighten the aluminum foil in the width direction, and the cooperation of the two clamping assemblies to flatten and tighten the aluminum foil in the length direction. This ensures that the aluminum foil is flattened and tightened as a whole without wrinkles, thus guaranteeing the accuracy of the surface defect detection results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the clamping assembly. Figure 3 This is a partial schematic diagram of the clamping assembly; Figure 4 Schematic diagram of clamping unit Figure 1 ; Figure 5 Schematic diagram of clamping unit Figure 2 .

[0017] The labels in the attached diagram are: 1. Guide rod one; 2. Lead screw one; 3. Lifting seat; 4. Spring one; 5. Clamping assembly; 501. Motor two; 502. Lead screw two; 503. Guide rod two; 504. Slide seat; 505. Spring two; 506. Spring three; 507. Lug; 508. Clamp seat one; 509. Clamp seat two; 510. Protruding strip; 511. Electromagnet; 512. Magnet two; 513. Magnet one; 514. Connecting rod; 515. Support body. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0019] Reference Figures 1-5 An aluminum foil surface defect detection device includes a detection frame (not shown in the figure), on which a clamping component 5 is provided. Two clamping components 5 are arranged vertically. The lower clamping component 5 is stationary, while the upper clamping component 5 can move vertically. Furthermore, the detection frame is provided with a linear module for driving the upper clamping component 5 to move.

[0020] Specifically, the linear module includes a guide rod 1 and a lead screw 2 arranged vertically on the testing frame. The input end of the lead screw 2 is powered by a motor 1 (not shown in the figure). A lifting seat 3 is provided outside the lead screw 2. The lifting seat 3 and the guide rod 1 are slidably connected. Therefore, when the motor 1 drives the lead screw 2 to rotate, the lifting seat 3 can move in the vertical direction.

[0021] The clamping assembly 5 includes a support body 515. The support body 515 of the lower clamping assembly 5 is fixedly connected to the guide rod 1, and the support body 515 of the upper clamping assembly 5 is slidably connected to the guide rod 1. It is located above the lifting seat 3 and a spring 4 is provided between the two. Therefore, when the lifting seat 3 moves upward, the clamping assembly 5 located above moves upward along with it through the spring 4. Conversely, when the lifting seat 3 moves downward, the clamping assembly 5 located above moves downward under the action of gravity. Furthermore, a sensor can be set on the lifting seat 3 to monitor the magnitude of the spring force of the spring 4 in real time. The sensor can be implemented using existing pressure sensor technology, which will not be elaborated here. Its technical advantages will be explained later.

[0022] Reference Figures 2-5 The support body 515 is provided with a horizontally arranged and parallel guide rod 503 and a lead screw 502. The input end of the lead screw 502 is powered by a motor 501. The lead screw 502 is divided into two threaded segments with opposite thread directions along the axis. Each threaded segment is provided with a slide block 504. The slide block 504 is also slidably connected to the guide rod 503. Therefore, when the motor 501 drives the lead screw 502 to rotate, it can drive the two slide blocks 504 to move closer or further apart.

[0023] The guide rod 2 503 has two lugs 507 on its outer side, and two slide blocks 504 are located between the two lugs 507. The guide rod 2 503 is sleeved with a spring 2 505 located between the lugs 507 and the slide blocks 504, and a spring 3 506 located on the side of the lugs 507 away from the slide blocks 504. There are two springs 2 505 and two springs 3 506. The elastic coefficient of spring 2 505 is greater than that of spring 3 506. Furthermore, a sensor 2 is provided on the slide block 504 for real-time monitoring of the elastic force of spring 2 505. Similarly, sensor 2 can be implemented using existing pressure sensor technology, which will not be described in detail.

[0024] A clamping unit is provided on one side of the lug 507, and two clamping units are provided in the same clamping assembly 5.

[0025] Specifically, refer to Figure 4 and Figure 5 The clamping unit includes a first clamping seat 508 connected to the lug 507 and a second clamping seat 509 located on the side of the first clamping seat 508 away from the lug 507. The first clamping seat 508 is provided with a guide hole, and the second clamping seat 509 is provided with a connecting rod 514. The end of the connecting rod 514 passes through the guide hole and is provided with a fixing ring.

[0026] A driving element is provided between the two clamps to drive the two clamps to move closer to each other or further away from each other. The driving element includes an electromagnet 511 and a magnet 512 embedded in the side of clamp 1 508 facing clamp 2 509, and a magnet 513 embedded in the side of clamp 2 509 facing clamp 1 508. The magnetic poles of magnet 1 513 and magnet 2 512 are the same and have a magnetic repulsion force. When electromagnet 511 is energized, there is a magnetic attraction force between it and magnet 1 513. The magnetic attraction force is greater than the magnetic repulsion force. Therefore, when electromagnet 511 is energized, clamp 2 509 can move closer to clamp 1 508. Conversely, when it is de-energized, clamp 2 509 can move away from clamp 1 508.

[0027] A protruding strip 510 is also provided on the side of clamp 1 508 facing clamp 2 509.

[0028] The area between the two clamps is called the clamping area.

[0029] The working principle of this utility model: First, take a foil sheet 15-20cm long and 4-6mm wide as a sample for aluminum foil surface defect detection; Then, the two sides of the same end of the aluminum foil sample are respectively placed in the two clamping areas of the same clamping assembly 5. Then, the electromagnet 511 is energized to make the clamping seat 509 approach the clamping seat 508. The aluminum foil is clamped by the clamping seat 509 and the protrusion 510. Then, the motor 501 drives the lead screw 502 to rotate, thereby making the two clamping units of the same clamping assembly 5 move away from each other and flatten the aluminum foil in the width direction. It should be noted that during the process of flattening the aluminum foil in the width direction, since the elastic coefficient of spring 2 505 is greater than that of spring 3 506, initially, spring 2 505 is not compressed, while spring 3 506 is compressed, thus flattening the aluminum foil. Then, spring 3 506 is not compressed, while spring 2 505 begins to compress, thus tautling the aluminum foil and maintaining its flattened state. In addition, the force experienced during tautness is equal to the elastic force of spring 2 505. Therefore, when sensor 2 detects that the elastic force of spring 2 505 has reached the preset value, it can send a signal, and motor 2 501 stops running. Similarly, the motor drives the lead screw 2 to rotate, causing the lifting seat 3 to move upward. The lifting seat 3 moves upward along with the clamping assembly 5 located above it, flattening the aluminum foil in the length direction. After flattening, the lifting seat 3 continues to move upward, but the clamping assembly 5 located above cannot move upward. Therefore, the compression of the spring 4 increases, and the elastic force increases. When the sensor detects that the elastic force of the spring 4 has reached the preset value, it can send a signal, and the motor stops running. At this point, the aluminum foil is completely flat and wrinkle-free. Staff can then visually inspect the aluminum foil to check its surface quality, or they can use existing optical inspection technologies to check the surface quality of the aluminum foil, which will not be elaborated further.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A device for detecting surface defects on aluminum foil, comprising a detection frame, characterized in that, The testing frame is equipped with a clamping assembly (5). There are two clamping assemblies (5) arranged vertically. The lower clamping assembly (5) is stationary, while the upper clamping assembly (5) can move vertically. The clamping assembly (5) includes a support body (515). A slide block (504) and a lug (507) are slidably arranged on the support body (515) along the same horizontal direction, and two of each are provided. The two slide blocks (504) are located between the two lugs (507). A second spring (505) is provided between the lug (507) and the slide block (504). A third spring (506) is provided on the side of the lug (507) away from the slide block (504). Two springs are provided for both the second spring (505) and the third spring (506). The elastic coefficient of the second spring (505) is greater than that of the third spring (506). A clamping unit is provided on one side of the lug (507), and two clamping units are provided in the same clamping assembly (5).

2. The aluminum foil surface defect detection device according to claim 1, characterized in that, The testing frame is equipped with a guide rod (1) and a lead screw (2) arranged vertically. The input end of the lead screw (2) is connected to a motor. The outside of the lead screw (2) is equipped with a lifting seat (3). The lifting seat (3) and the guide rod (1) form a sliding connection. The support body (515) of the clamping assembly (5) located below is fixedly connected to the guide rod (1), and the support body (515) of the clamping assembly (5) located above is slidably connected to the guide rod (1). The support body (515) of the clamping assembly (5) located above the lifting seat (3) is provided with a spring (4) between the two.

3. The aluminum foil surface defect detection device according to claim 2, characterized in that, The lifting seat (3) is equipped with a sensor for real-time monitoring of the elastic force of the spring (4).

4. The aluminum foil surface defect detection device according to claim 1, characterized in that, The support body (515) is provided with a horizontally arranged and parallel guide rod (503) and a lead screw (502). The input end of the lead screw (502) is connected to a motor (501). The lead screw (502) is divided into two threaded segments with opposite thread directions along the axis. The two threaded segments are respectively connected to two slides (504). The slides (504) and the guide rod (503) form a sliding connection. The lug (507) and the guide rod (503) form a sliding connection.

5. The aluminum foil surface defect detection device according to claim 1 or 4, characterized in that, The slide (504) is equipped with a sensor two for real-time monitoring of the elastic force of spring two (505).

6. The aluminum foil surface defect detection device according to claim 1 or 4, characterized in that, The clamping unit includes a clamping seat 1 (508) connected to the lug (507) and a clamping seat 2 (509) located on the side of the clamping seat 1 (508) away from the lug (507). The clamping seat 1 (508) is provided with a guide hole, and the clamping seat 2 (509) is provided with a connecting rod (514). The end of the connecting rod (514) passes through the guide hole and is provided with a fixing ring. A drive element is provided between clamp one (508) and clamp two (509) for driving clamp two (509) to approach clamp one (508).

7. The aluminum foil surface defect detection device according to claim 6, characterized in that, The driving component includes an electromagnet (511) and a magnet (512) embedded in the side of the first clamp (508) facing the second clamp (509), and a magnet (513) embedded in the side of the second clamp (509) facing the first clamp (508). There is a magnetic repulsion between magnet (513) and magnet (512), and a magnetic attraction between electromagnet (511) and magnet (513) when the electromagnet (511) is energized. The magnetic attraction is greater than the magnetic repulsion.

8. The aluminum foil surface defect detection device according to claim 6, characterized in that, A protrusion (510) is provided on the side of clamp one (508) facing clamp two (509).

Images