An aluminum plastic film pit quality measuring device

Abstract

This utility model belongs to the field of aluminum-plastic film production and testing technology, specifically relating to an improved aluminum-plastic film dent quality measuring device, comprising: a working platform with a rigid reference surface on its upper surface for supporting the aluminum-plastic film; a measuring block with an auxiliary positioning surface parallel to the rigid reference surface on its lower surface and a measuring part providing a certain range on its side surface, the starting point of which is set at the connection between the fixed surface and the side surface; and a fixing clamp located away from the center of the working platform for clamping the edge of the aluminum-plastic film. During measurement, the dented area of ​​the aluminum-plastic film is placed on the rigid reference surface of the working platform. The auxiliary positioning surface parallel to the rigid reference surface can press against the surface of the aluminum-plastic film to keep it flat, ensuring accurate measurement results, improving measurement efficiency, and avoiding damage to the surface of the aluminum-plastic film by the measuring device.

Description

Technical Field

[0001] This utility model belongs to the field of aluminum-plastic film production and testing technology, specifically relating to an improved aluminum-plastic film denting quality measuring device. Background Technology

[0002] Aluminum-plastic film is the encapsulation material for pouch batteries, used to protect the battery cells and accommodate their expansion and contraction during charging and discharging. Punching is a core processing step in aluminum-plastic film manufacturing, referring to the process of creating recesses of specific depth and shape on the film using a mold to accommodate the battery cell. Punching quality includes both depth and flatness. Deviations in depth or flatness can lead to poor adhesion between the aluminum-plastic film and the tabs / cells during subsequent encapsulation, resulting in gaps and electrolyte leakage. Therefore, the quality control department needs to inspect the punching quality of aluminum-plastic film samples during production.

[0003] In the prior art, patent CN201610887206.X discloses a device for measuring the depth of dents in aluminum-plastic film. This device includes a thickness gauge platform and a thickness gauge. The thickness gauge platform is provided with a die hole corresponding to the dent in the aluminum-plastic film. A positioning ruler for fixing the aluminum-plastic film is slidably connected to the bottom surface of the thickness gauge platform. The thickness gauge includes a transparent main scale fixed to the edge of the die hole. A receiving cavity is provided at the axis of the transparent main scale. A secondary scale is slidably connected in the receiving cavity. An air pump is provided at the top of the transparent main scale. The air pump is connected to the receiving cavity through an air pipe. A contact head is provided at the bottom of the secondary scale. An air channel is provided through the axis of the secondary scale and the contact head. A buffer air cushion is provided near the bottom edge of the contact head. Several exhaust holes are provided on the side of the contact head. The exhaust holes are connected to the air channel. The drawback of this solution is that the working principle of the device is to use a pneumatic device to push the contact head to contact the bottom surface of the aluminum-plastic film for measurement. However, the aluminum-plastic film itself is a soft material, and the point-contact measurement method during pneumatic operation may cause local deformation or damage to the aluminum-plastic film. Utility Model Content

[0004] In view of this, the present invention aims to provide a device for measuring the depth of dents in aluminum-plastic film, thereby solving the problems of potential damage to the aluminum-plastic film and errors in test results caused by the point-contact measurement method in the prior art.

[0005] This utility model is achieved through the following technical solution:

[0006] A device for measuring the quality of dents in aluminum-plastic film, wherein the aluminum-plastic film includes a recessed dent area and an edge surrounding the dent area; the device for measuring the quality of dents in aluminum-plastic film includes:

[0007] The work platform has a rigid reference surface on its upper surface to support the aluminum-plastic film;

[0008] The measuring block has an auxiliary positioning surface on its lower surface that is parallel to the rigid reference surface, and a measuring part on its side surface that provides a certain range. The starting point of the range is set at the connection between the auxiliary positioning surface and the side surface.

[0009] A fixing clip is positioned away from the center of the working platform and is used to clamp the edge of the aluminum-plastic film.

[0010] This invention proposes a device for measuring the quality of dents in aluminum-plastic film. During measurement, the dented area of ​​the aluminum-plastic film is placed on a rigid reference surface of the working platform. Since the aluminum-plastic film itself is a flexible material, the dented area will not strictly adhere to the rigid reference surface when naturally placed. Therefore, this solution sets the measuring part on the measuring block, and an auxiliary positioning surface parallel to the rigid reference surface can press against the surface of the aluminum-plastic film to keep it flat. This reduces damage to the surface of the aluminum-plastic film caused by the measuring device, while also making the measurement results accurate and improving the measurement efficiency.

[0011] Preferably, the device also includes multiple sets of feeler gauges; the feeler gauges cooperate with the auxiliary positioning surface of the measuring block to form a clamping structure for the perforated area of ​​the aluminum-plastic film.

[0012] Multiple feeler gauges engage with the auxiliary positioning surface of the measuring block to form a clamping structure. After the dented area of ​​the aluminum-plastic film is flattened, the feeler gauges can be inserted into the gap between the dented area and the auxiliary positioning surface. By measuring the size of the gap at different locations, it can be determined whether the dented area is parallel. If the dented area is parallel, the gaps should be approximately the same at all points; otherwise, it is not parallel. This allows for the measurement of the parallelism of the dented area of ​​the aluminum-plastic film. This device also has the function of measuring dent depth and dent parallelism, enabling comprehensive testing of dent quality.

[0013] Preferably, the system also includes a robotic arm and a robotic arm scheduling track; the robotic arm has a degree of freedom of movement in the horizontal plane and a degree of freedom of lifting in the vertical direction.

[0014] The robotic arm has horizontal movement and vertical lifting freedom. Combined with a track-manipulating mechanism, it can move flexibly above the work platform. It can move the measuring block to different positions within the crater area according to measurement needs, allowing for measurements of various parts of the crater area without the need for manual movement of the measuring device. This improves the convenience and efficiency of measurement while ensuring the accuracy and consistency of the measurement positions.

[0015] Preferably, the measuring unit is provided in multiple sets on the measuring block, at least on two side surfaces of the measuring block facing different directions.

[0016] The measuring unit has multiple sets of measuring blocks with different orientations, allowing simultaneous measurement of multiple points in the aluminum-plastic film dented area. For example, it can simultaneously measure the length, width, or depth of the dented area at different angles, eliminating the need for repeated adjustments to the measuring block position and angle. This significantly improves measurement efficiency and provides a more comprehensive reflection of the dented area's quality, facilitating a holistic assessment of the dent's quality.

[0017] Preferably, the connection between the side surface of the measuring block (without the measuring part) and the auxiliary positioning surface is chamfered.

[0018] A chamfer is provided at the junction of the auxiliary positioning surface and part of the measuring block side surface to eliminate sharp edges in this area. During the measurement process, when the auxiliary positioning surface flattens the aluminum-plastic film, the chamfer prevents scratches on the surface of the aluminum-plastic film, protecting it from test damage and ensuring that the measurement results accurately reflect the quality of the perforation on the aluminum-plastic film, rather than inaccurate measurements due to test damage.

[0019] Preferably, the fixing clamp includes a pair of opposing clamping arms, the inner surfaces of the two clamping arms forming clamping surfaces, and the clamping surfaces being parallel to the rigid reference surface.

[0020] The inner sides of the pair of clamping arms of the fixing clamp form clamping surfaces parallel to the rigid reference plane, ensuring that the aluminum-plastic film is horizontal and parallel to the rigid reference plane when clamping the edge of the aluminum-plastic film. This allows the dented area to be placed more stably on the rigid reference plane, facilitating accurate flattening and measurement of the measuring block, while also ensuring the accuracy of the measurement results and avoiding measurement errors caused by the tilt of the aluminum-plastic film.

[0021] Preferably, the area of ​​the clamping surface is not less than 30 mm². 2 .

[0022] With a clamping surface area of ​​not less than 30mm², it can provide sufficient clamping force to stably hold the aluminum-plastic film edge. The larger clamping area can keep the aluminum-plastic film fixed during the measurement process, preventing it from moving or shaking due to measurement operations or other external forces, thus ensuring the stability of the measurement process and the reliability of the measurement results.

[0023] Preferably, the flatness of the rigid reference surface is grade 00 or grade 0.

[0024] The rigid reference surface has a flatness grade of 00 or 0, providing extremely high flatness. This ensures a very flat surface for the aluminum-plastic film, allowing the perforated area to fit tightly against the reference surface after flattening. This reduces measurement errors caused by unevenness of the reference surface, guarantees that the measurement results accurately reflect the actual condition of the perforated aluminum-plastic film, and improves the measurement accuracy of the measuring device.

[0025] Preferably, the measuring range of the measuring unit is not less than 50 mm.

[0026] Preferably, the minimum graduation value of the measuring part is 0.001 to 0.01 mm.

[0027] The measuring unit has a range of at least 50 mm and a minimum graduation of 0.001–0.01 mm, enabling precise measurement of minute dimensional changes in the dented area and meeting the measurement needs for a large range of dented areas on aluminum-plastic film. Because the depth and diameter of dents on aluminum-plastic film can be large, the large measuring range ensures that the measuring unit can cover common dent sizes, eliminating the need to replace the measuring device or use other complex measurement methods for larger dent sizes, thus guaranteeing the versatility and practicality of the measuring device.

[0028] This invention offers the following technical advantages. First, it solves the problem of potential damage to the aluminum-plastic film caused by point-contact measurement in existing technologies. By using the auxiliary positioning surface of the measuring block to flatten the aluminum-plastic film, combined with the chamfering of the side surface without a measuring section, scratches on the aluminum-plastic film are avoided, ensuring the integrity of the measured object. Second, this invention improves the accuracy and reliability of the measurement. Multiple sets of measuring sections enable multi-point measurement; the flatness of the rigid reference surface reduces errors caused by unevenness; the clamping surface of the fixing clamp is parallel to the rigid reference surface, ensuring the aluminum-plastic film is stably placed and horizontal, avoiding measurement deviations due to tilting or movement. Simultaneously, it expands the functionality and applicability of the device. Through the cooperation of multiple feeler gauges and auxiliary positioning surfaces, comprehensive measurement of crater depth and parallelism is achieved, enabling a comprehensive assessment of crater quality. Furthermore, it improves the convenience and efficiency of measurement. The robotic arm and scheduling track allow for flexible movement of the measuring block, eliminating the need for manual adjustment, ensuring the accuracy and consistency of the measurement points, significantly improving operational convenience and measurement efficiency, and making the entire measurement process more efficient and stable. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model.

[0030] Legend:

[0031] 1 aluminum-plastic film, 110 punching area, 120 edge wrapping;

[0032] 2 working platforms, 210 rigid reference planes;

[0033] 3 measuring blocks, 310 auxiliary positioning surface, 320 measuring section;

[0034] 4. Fixed clamp, 410 clamping arm, 420 clamping surface;

[0035] 5 robotic arms, 6 robotic arms to manage the track. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Those skilled in the art will be able to implement the present invention based on these descriptions. Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Example

[0037] The aluminum-plastic film perforation quality measuring device provided in this embodiment is mainly used to accurately measure perforation quality parameters such as perforation depth and parallelism of aluminum-plastic film used for lithium battery packaging. It aims to solve the problems of potential damage to the aluminum-plastic film and errors in test results caused by the point-contact measurement method in the prior art. The aluminum-plastic film involved in this embodiment is a double-perforated aluminum-plastic film, comprising two adjacent recessed perforation areas and an edge surrounding the perforation areas.

[0038] Please see Figure 1 The basic structure of the measuring device includes a working platform 2, a measuring block 3, and a fixing clamp 4. The working platform 2 has a marble tabletop with a rigid reference surface 210 on its upper surface to support the aluminum-plastic film 1. The measuring block 3 has an auxiliary positioning surface 310 parallel to the rigid reference surface 210 on its lower surface, and a measuring section 320 on its side surface providing a certain measurement range. The starting point of the measurement range is located at the connection between the auxiliary positioning surface 310 and the side surface. The fixing clamp 4 is located away from the center of the working platform 2 and is used to clamp the edge 120 of the aluminum-plastic film 1. During measurement, the pitted area 110 of the aluminum-plastic film 1 is placed on the rigid reference surface 210 of the working platform 2. Since the aluminum-plastic film 1 is a flexible material, the pitted area 110 will not strictly adhere to the rigid reference surface 210 when naturally placed. Therefore, the aluminum-plastic film 1 is flattened by the auxiliary positioning surface 310 on the measuring block 3, which is parallel to the rigid reference surface 210, and then measured using the measuring section 320. The value is then visually observed to see if it is within the process standard range. This measuring device is used in production quality control laboratories to conduct random inspections of production samples in the workshop. It can improve testing efficiency while ensuring accurate readings and avoiding damage to test samples, thus enabling the reuse of test samples.

[0039] Based on this, the measuring device is further equipped with multiple sets of feeler gauges. The feeler gauges cooperate with the auxiliary positioning surface 310 of the measuring block 3 to form a clamping structure for the perforated area 110 of the aluminum-plastic film 1. When the perforated area 110 of the aluminum-plastic film 1 is flattened, the feeler gauges can be inserted into the gap between the perforated area 110 and the auxiliary positioning surface 310. By measuring the size of the gap at different positions, it is determined whether the perforated area 110 is parallel, thus realizing the comprehensive measurement of perforation quality indicators such as perforation depth and parallelism.

[0040] To enhance the automation and flexibility of measurement, the device also includes a robotic arm 5 and a robotic arm scheduling track 6. The robotic arm 5 has a degree of freedom of movement in the horizontal plane and a degree of freedom of lifting in the vertical direction. In conjunction with the robotic arm scheduling track 6, it can move flexibly above the work platform 2 and can move the measuring block 3 to different positions in the crater area 110 according to the measurement requirements. This improves the convenience, efficiency, accuracy, and consistency of the measurement position, while avoiding test scrap caused by manual use of calipers.

[0041] Meanwhile, the setup of the measuring unit 320 is optimized by placing multiple sets of the measuring unit 320 on the measuring block 3, with at least two sets on two different side surfaces of the measuring block 3. This allows for simultaneous measurement of multiple points on the dented area 110 of the aluminum-plastic film 1, such as simultaneously measuring the length, width, or depth of the dented area 110 at different angles, without needing to repeatedly adjust the position and angle of the measuring block 3. This significantly improves measurement efficiency and provides a more comprehensive reflection of the quality of the dented area 110, facilitating a comprehensive evaluation of the dent quality.

[0042] To protect the aluminum-plastic film 1 from damage, a chamfer is provided at the connection point between the measuring block 3 (without the measuring section 320) and the auxiliary positioning surface 310. This design eliminates the sharp edge at this location. During measurement, when the auxiliary positioning surface 310 flattens the aluminum-plastic film 1, it avoids scratching the surface of the aluminum-plastic film 1, protecting it from test damage and ensuring that the measurement results accurately reflect the quality of the perforation on the aluminum-plastic film 1.

[0043] The structure of the fixing clamp 4 has also been optimized. The fixing clamp 4 includes a pair of opposing clamping arms 410, the inner surfaces of which respectively form clamping surfaces 420, and the clamping surfaces 420 are parallel to the rigid reference surface 210. This ensures that when clamping the aluminum-plastic film 1 edge 120, the aluminum-plastic film 1 is in a horizontal state, parallel to the rigid reference surface 210, so that the pitted area 110 is placed more stably on the rigid reference surface 210, which facilitates the accurate flattening and measurement of the measuring block 3, ensures the accuracy of the measurement results, and avoids measurement errors caused by the tilt of the aluminum-plastic film 1. In addition, the area of ​​the clamping surface 420 is not less than 30mm², which can provide sufficient clamping force to stably clamp the aluminum-plastic film 1 edge 120. The large clamping surface area 420 can keep the aluminum-plastic film 1 fixed during the measurement process, and will not move or shake due to the measurement operation or other external forces, ensuring the stability of the measurement process and the reliability of the measurement results.

[0044] To improve the accuracy of the reference surface, the flatness of the rigid reference surface 210 is set to grade 00 or 0, giving it extremely high flatness. This provides a very flat placement surface for the aluminum-plastic film 1, allowing the punched area 110 of the aluminum-plastic film 1 to fit tightly with the reference surface after being flattened. This reduces measurement errors caused by unevenness of the reference surface, ensures that the measurement results can truly reflect the actual situation of the punched area of ​​the aluminum-plastic film 1, and improves the measurement accuracy of the measuring device.

[0045] Furthermore, the measuring unit 320 has a measuring range of no less than 50 mm, which can meet the measurement needs of a large range of dimensions in the perforated area 110 of the aluminum-plastic film 1. Since the depth, diameter, and other dimensions of the perforations in the aluminum-plastic film 1 may be large, the large measuring range ensures that the measuring unit 320 can cover common perforation sizes, eliminating the need to change the measuring device or use other complex measuring methods due to larger perforation sizes, thus ensuring the versatility and practicality of the measuring device. Simultaneously, the minimum graduation value of the measuring unit 320 is 0.001–0.01 mm, providing extremely high measurement accuracy. It can accurately measure minute dimensional changes in the perforated area 110 of the aluminum-plastic film 1, meeting the requirement for high-precision measurement of the perforation quality of the aluminum-plastic film 1, and further ensuring the accuracy of the measurement results.

Claims

1. A device for measuring the quality of dents in aluminum-plastic film, wherein the aluminum-plastic film (1) includes a recessed dent area (110) and an edge (120) surrounding the dent area (110); characterized in that, The aluminum-plastic film dent quality measuring device includes: The work platform (2) has a rigid reference surface (210) on its upper surface for supporting the aluminum-plastic film (1); The measuring block (3) has an auxiliary positioning surface (310) on its lower surface that is parallel to the rigid reference surface (210), and a measuring part (320) on its side surface that provides a certain range. The starting point of the range is set at the connection between the auxiliary positioning surface (310) and the side surface. The fixing clip (4) is positioned away from the center of the working platform (2) and is used to clamp the edge (120) of the aluminum-plastic film (1).

2. The aluminum-plastic film dent quality measuring device according to claim 1, characterized in that, It also includes multiple sets of feeler gauges; the feeler gauges cooperate with the auxiliary positioning surface (310) of the measuring block (3) to form a clamping structure for the pitted area (110) of the aluminum-plastic film (1).

3. The aluminum-plastic film dent quality measuring device according to claim 1, characterized in that, It also includes a robotic arm (5) and a robotic arm scheduling track (6); the robotic arm (5) has a degree of freedom of movement in the horizontal plane and a degree of freedom of lifting in the vertical direction.

4. The aluminum-plastic film dent quality measuring device according to claim 1, characterized in that, The measuring unit (320) is provided in multiple sets on the measuring block (3), at least on two side surfaces of the measuring block (3) facing different directions.

5. The aluminum-plastic film dent quality measuring device according to claim 4, characterized in that, The side surface of the measuring block (3) without the measuring part (320) is chamfered at the connection between it and the auxiliary positioning surface (310).

6. The aluminum-plastic film dent quality measuring device according to claim 1, characterized in that, The fixing clamp (4) includes a pair of clamping arms (410) arranged opposite to each other. The inner surfaces of the two clamping arms (410) respectively form clamping surfaces (420), and the clamping surfaces (420) are parallel to the rigid reference surface (210).

7. The aluminum-plastic film perforation quality measuring device according to claim 6, characterized in that, The area of ​​the clamping surface (420) is not less than 30 mm2.

8. The aluminum-plastic film dent quality measuring device according to claim 1, characterized in that, The flatness of the rigid reference surface (210) is grade 00 or grade 0.

9. The aluminum-plastic film perforation quality measuring device according to claim 1, characterized in that, The measuring range of the measuring unit (320) is not less than 50 mm.

10. The aluminum-plastic film dent quality measuring device according to claim 1, characterized in that, The minimum graduation value of the measuring unit (320) is 0.001~0.001mm.

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