An areal density detection device

Abstract

The utility model relates to a kind of area density detection devices, including the non-contact area density detection component of sliding arrangement, for cutting sampling sampling component, and for identification positioning positioning component, the sampling component is set in area density detection component sliding path one side, the positioning component includes the marking member for the identification of the material to be detected, the marking member is correspondingly set with area density detection component;Using the device of the application can be calibrated under the premise of not affecting normal coating process, and the detection position of area density instrument is determined by marking member identification, to improve calibration accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of electrode testing, specifically, it relates to an areal density testing device. Background Technology

[0002] With the continuous development of electronic products, people have increasingly higher requirements for battery performance. Currently, related technologies employ methods to improve the performance of positive and negative electrode sheets to optimize battery performance. During the electrode sheet manufacturing process, in order to accurately control the electrode sheet quality, a surface density meter is usually added to monitor parameters such as electrode sheet thickness and surface density in real time, facilitating real-time feedback and instrument adjustments.

[0003] However, due to the differences between different materials, an isobaric analyzer needs to be calibrated before preparing different electrodes to reduce detection errors. Currently, in related technologies, an X-ray isobaric analyzer is used for detection in the coating process. The isobaric analyzer is positioned at the tail of the coating machine and slides along a straight line perpendicular to the foil conveying direction. During the detection process, the data obtained by the isobaric analyzer is displayed in real time. Before preparing the electrodes, the operator first coats a small section of coating onto the foil surface. After the coated section is dried in an oven, it is transferred to the isobaric analyzer for initial detection. Subsequently, the coated section is cut off, sampled using a sampler, and the isobaric density is calculated a second time. The isobaric analyzer is then calibrated and verified based on the calculated data and monitoring data.

[0004] However, during actual testing, it was found that when the coating section is long, the sample taken in the second sampling is prone to misalignment with the sample taken in the first test, resulting in a certain deviation after calibration. When the coating section is short, in order to reduce the occurrence of tape breakage, the foil at both ends of the coating section is usually connected and the interface is wound on the take-up reel. The foil from the interface position to the coating head position is wasted, which increases the consumption of foil and increases the production cost. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a density detection device that improves the situation of high material consumption and reduces human error.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A areal density detection device includes a non-contact areal density detection component that slides, a sampling component for cutting and sampling, and a positioning component for marking and positioning. The sampling component is disposed on one side of the sliding path of the areal density detection component, and the positioning component includes a marking component for marking the material to be tested. The marking component is disposed corresponding to the areal density detection component.

[0008] Preferably, the areal density detection component includes a generator for transmitting signals and a receiver for receiving signals, with a gap formed between the generator and the receiver for placing the object to be tested, and the generator and the receiver are slidably positioned synchronously.

[0009] Preferably, the marking position of the marking machine is located within the sliding plane of the rays generated by the generator.

[0010] Preferably, the sampling assembly includes a plurality of sampling blades arranged in parallel and a pad, wherein the sampling blades are slidably disposed in a direction toward or away from the pad, and the sampling blades are in a state of being separated from the pad and generating force directly or indirectly.

[0011] Preferably, a sampling groove is formed on the side of the gasket facing the sampling knife, and the sampling groove is correspondingly arranged with the sampling knife.

[0012] Preferably, it also includes a weighing component electrically connected to the areal density meter. The weighing component is disposed on the side of the pad away from the sampling blade. The sampling groove penetrates the pad to form a sampling hole. The weighing surfaces of the sampling hole weighing component are all correspondingly disposed.

[0013] Preferably, the positioning component further includes sensors for identifying the identifier, the sensors being disposed on both sides of the sampling component.

[0014] Preferably, the sampling blades are arranged in a straight line array, and the sensing point of the sensing element is located on the straight line where the sampling blades are located.

[0015] Preferably, it also includes a frame-shaped frame, the areal density detection component is disposed within the space formed by the frame, rollers are disposed on both sides of the frame, the rollers are slidably disposed at least in the vertical direction, and the projection of the roller sliding plane on the vertical plane is at least parallel to the sliding plane of one of its areal densitometers, and the sampling component is disposed on the side of the roller away from the frame.

[0016] Preferably, a sliding rod is connected to the side wall of the frame, and a sliding sleeve is provided on the sliding rod. The sliding sleeve is arc-shaped, and the two ends of the sliding sleeve are connected by an adjusting member. The adjusting member is used to adjust the distance between the two ends of the sliding sleeve, and the sliding sleeve is connected to a roller.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art;

[0018] By setting a sampling component on one side of the areal density detection component and setting a marking component to assist in marking the sample detection position of the areal density detection component, the error caused by two misaligned areal density detections can be reduced. At the same time, this device can be used to continuously coat during the calibration process, effectively reducing the waste of raw materials caused by calibration and saving costs.

[0019] The marking position is confirmed by a sensor, and the sample is taken directly by a sampling knife, which can achieve direct and accurate sampling, effectively reducing the sampling area and thus reducing the tape breakage rate. Furthermore, during use, setting the winding position close to the sampling position can effectively shorten the time that the cut position is stretched under tension, further reducing the tape breakage rate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an areal density detection device according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the overall structure of a areal density detection device from another angle according to an embodiment of this application;

[0022] Figure 3 yes Figure 1 Enlarged view of part A in the image.

[0023] In the diagram: 1. Frame; 2. Areal density detection component; 21. Areal density meter; 22. Generator; 23. Receiver; 24. Threaded rod; 25. Reinforcing component; 26. Gear; 27. Servo motor; 3. Positioning component; 31. Marking component; 32. Sensor; 4. Sampling component; 41. Sampling knife; 42. Gasket; 43. Support frame; 44. Drive component; 45. Mounting plate; 46. Positioning rod; 47. Blocking plate; 48. Sampling slot; 5. Connector; 6. Sliding rod; 7. Sliding sleeve; 8. Connecting block; 9. Roller. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0028] Example

[0029] A surface density detection device, with reference to Figure 1 and Figure 2 The calibration apparatus includes a frame 1 arranged in a frame shape, an areal density detection component 2 slidably disposed inside the frame 1, a positioning component 3 for determining the position of the electrode sheet, and a sampling component 4 disposed on one side of the areal density meter 21. The sampling component 4 is disposed downstream of the areal density detection component 2 along the electrode sheet conveying direction. During the calibration process, the operator must first pass the coated electrode sheet through the frame 1 and keep the electrode sheet stationary by controlling the external unwinding device or other methods. At this time, the areal density detection component 2 is used to perform the first areal density detection, and the positioning component 3 is used to mark it. After completing the first detection and marking operation, the electrode sheet is moved again so that the position of the detected electrode sheet is moved to the position of the sampling component 4. The sampling component 4 is used to take a sample for the second areal density detection and calibration, which is convenient and quick.

[0030] Reference Figure 1 In this embodiment, the areal density detection component 2 includes a non-contact laser areal density meter 21 and a display (not shown in the figure) electrically connected to the areal density meter 21 for displaying the areal density detection results. The areal density meter 21 includes a generator 22 and a receiver 23 separately disposed. A gap is formed between the generator 22 and the receiver 23 to facilitate the passage of the electrode sheet. The generator 22 and the receiver 23 slide synchronously in a direction perpendicular to the electrode sheet conveying direction to detect the areal density of the electrode sheet and transmit the result to the display. After the detection is completed, the electrode sheet is controlled to continue sliding. When the marking position is observed to move to the position of the sampling component 4, a sample is taken, a secondary areal density calculation is performed, and the areal density meter 21 is calibrated according to the calculation result.

[0031] Reference Figure 1 and Figure 2A threaded rod 24 is connected between the two opposing side walls of the frame 1. The top side wall of the surface density meter 21 is threadedly connected to the threaded rod 24. The surface density meter 21 can be controlled to slide by controlling the rotation of the threaded rod 24, which is convenient and quick. In addition, in order to improve the sliding stability of the surface density meter 21, a reinforcing member 25 is also provided inside the side wall of the surface density meter 21 located on one side of the threaded rod 24. At least two planes of the reinforcing member 25 are arranged parallel to the axis of the threaded rod 24, and its two ends are respectively connected to the two opposing side walls of the frame 1. In this embodiment, the reinforcing member 25 is plate-shaped. The threaded rod 24 and the reinforcing member 25 are symmetrically arranged at both ends of the inner side wall of the frame 1. In addition, the ends of the two threaded rods 24 located on the same side are arranged through and protrude from the side wall of the frame 1. The protruding ends of the threaded rods 24 are fixedly connected to a coaxial gear 26 and connected to the same servo motor 27 through a belt (not shown in the figure) to realize the synchronous movement of the generator 22 and the receiver 23, ensuring the normal use of the surface density meter 21.

[0032] Reference Figure 1 and Figure 3 Two pairs of connectors 5 are respectively connected to the side walls of the frame 1. A sliding rod 6 is connected between the two connectors 5. The sliding rod 6 is separate from the frame 1. A sliding sleeve 7 is slidably mounted on the sliding rod 6. The sliding sleeve 7 is arc-shaped and its two ends are connected by adjusting bolts (not shown in the figure). By adjusting the bolts, the tightness of the connection between the sliding sleeve 7 and the sliding rod 6 can be controlled, and the relative position of the sliding sleeve 7 and the sliding rod 6 can be adjusted.

[0033] Reference Figure 3 Connecting blocks 8 are provided on the outer side wall of the sliding sleeve 7 away from both ends. For ease of adjustment, the connecting blocks 8 are located on the side of the sliding sleeve 7 facing the frame 1, and a roller shaft is connected between two connecting blocks 8 on the same side of the frame 1. A roller 9 is rotatably mounted on the outer side of the roller shaft. This arrangement ensures that rollers 9 are provided on both sides of the frame 1. The rollers 9 provide support for the electrode, facilitating the detection of surface density. Furthermore, the distance between the electrode and the detection end of the surface density meter 21 can be adjusted by adjusting the height of the rollers 9, improving the controllability and accuracy of the detection.

[0034] Reference Figure 2The positioning component 3 includes a marking element 31 disposed on the inner side wall of the frame 1 and a sensing element 32 for identifying the markings generated by the marking element 31. The marking element 31 is an infrared laser marking machine. The marking element 31 is disposed on both sides of the sliding path of the surface density detection component 2, and the sliding path of the laser generated by the marking element 31 and the laser generated by the surface density meter 21 is located in the same plane. The surface sampling component 4 is located on a plane parallel to but not overlapping with the laser sliding surface of the surface density meter 21. In other embodiments, the marking position and the laser sliding plane can be offset by a certain difference according to the actual situation, and the sampling positions of the sensing element 32 and the sampling component 4 can be offset by the same difference. During the detection process of the surface density meter 21, the marking machine simultaneously marks the edge of the electrode, which facilitates the determination of the detection position, reduces the occurrence of misalignment between the secondary detection position and the primary detection position, and improves the accuracy of calibration.

[0035] Reference Figure 2 The sampling component 4 includes several sampling blades 41 and pads 42. In this embodiment, five sampling blades 41 are arranged in a straight line array. A U-shaped support frame 43 is also connected to the side wall of the frame 1 facing one of its rollers 9. The sensing element 32 is arranged on the side wall of the support frame 43 facing the mounting plate 45 and is located on the array line of the sampling blades 41. The two ends of the pads 42 are respectively connected to the two opposite side walls of the support frame 43. A driving element 44 cylinder is connected to the support frame 43. The driving end of the cylinder passes through the support frame 43 and is connected to the mounting plate 45. The sampling blades 41 are arranged on the side of the mounting plate 45 away from the support frame 43, and both the sampling blades 41 and the mounting plate 45 slide with the driving end of the cylinder. The pads 42 are arranged on the side of the sampling blades 41 away from the mounting plate 45. There is a gap between the pads 42 and the sampling blades 41, and the gap between the generator 22 and the receiver 23 corresponds to this gap.

[0036] In addition, in order to improve the stability of the sliding process of the mounting plate 45, a positioning rod 46 is provided on the side of the mounting plate 45 away from the sampling knife 41. The end of the positioning rod 46 away from the mounting plate 45 passes through and protrudes from the support frame 43, and a blocking plate 47 is connected to the protruding end. The area of ​​the blocking plate 47 is larger than that of the positioning rod 46.

[0037] Reference Figure 2 and Figure 3In this embodiment, to improve the sampling effect, a sampling groove 48 is also provided on the pad 42, and the sampling groove 48 is correspondingly set with the sampling blade 41. In order to reduce the influence of the pad 42 on the electrode, during use, the roller 9 between the sampling component 4 and the areal density detection component 2 can be adjusted to be slightly higher than the surface of the pad 42 facing the sampling blade 41. In other embodiments, a sampling hole can be opened at the position corresponding to the sampling blade 41 on the pad 42, and a weighing component electronic scale can be set on the side of the pad 42 away from the sampling blade 41. The weighing component is electrically connected to the areal density meter 21 through the control terminal and adjusts the areal density meter 21 so that the weighing surface of the weighing device is correspondingly set with the sampling hole. After sampling is completed, the sample falls onto the weighing surface of the weighing device through the sampling hole. After the weighing result is calculated and processed by the control terminal, the difference between the weighing result and the detection result of the areal density meter 21 is obtained. The control terminal transmits the difference through an electrical signal and adjusts the areal density meter 21 to further realize the automation of adjustment, which is convenient and fast.

[0038] The principle of this embodiment is as follows: When calibrating the surface density meter 21, the electrode is passed sequentially through the gap between the roller 9, the generator 22 and the receiver 23, the roller 9, and the gap between the sampling blade 41 and the pad 42. The distance between the electrode and the generator 22 and the receiver 23 is adjusted by adjusting the height of the roller 9. After adjustment, the part to be tested is moved to the position of the surface density meter 21, keeping the electrode stationary. The surface density meter 21 is controlled to slide, and sampling and testing are performed along the width direction of the electrode strip. At the same time, a sample close to the surface density meter is used. Marking is performed at the initial end of the sliding path of the instrument 21 by the marking component 31; after the areal density detection and marking process is completed, the electrode is moved, and after the sensor 32 recognizes the mark, the electrode is brought to a standstill again. At this time, the part detected by the areal density meter 21 moves between the sampling knife 41 and the pad 42, and drives the sampling knife 41 to slide toward the pad 42, so that the sample that has been tested once can be cut out for secondary testing, which is used to provide feedback and adjust the areal density meter 21. This setting can improve the accuracy of the areal density meter 21 calibration without affecting the electrode coating production.

[0039] 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 preferred embodiments, 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-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. 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. An areal density detection device, characterized by, The device includes a non-contact areal density detection component (2) with a sliding setting, a sampling component (4) for cutting and sampling, and a positioning component (3) for marking and positioning. The sampling component (4) is set on one side of the sliding path of the areal density detection component (2). The positioning component (3) includes a marking component (31) for marking the material to be tested. The marking component (31) is set correspondingly to the areal density detection component (2).

2. The areal density detection apparatus according to claim 1, characterized by The areal density detection component (2) includes a generator (22) for transmitting signals and a receiver (23) for receiving signals. A gap for placing the object to be tested is formed between the generator (22) and the receiver (23), and the generator (22) and the receiver (23) are synchronously slidable.

3. The areal density detection apparatus according to claim 2, characterized by The marking position of the marking component (31) is located within the sliding plane of the ray generated by the generator (22).

4. The areal density detection device according to any one of claims 1 to 3, characterized in that, The sampling assembly (4) includes several sampling blades (41) arranged in parallel and a pad (42). The sampling blades (41) are slidably disposed in a direction toward or away from the pad (42), and the sampling blades (41) are in a state of being separated from the pad (42) and generating force directly or indirectly.

5. The areal density detection apparatus according to claim 4, characterized by The gasket (42) has a sampling groove (48) on the side facing the sampling knife (41), and the sampling groove (48) is correspondingly arranged with the sampling knife (41).

6. The areal density detection apparatus according to claim 5, wherein It also includes a weighing assembly electrically connected to the surface density meter (21), the weighing assembly being disposed on the side of the pad (42) away from the sampling knife (41), the sampling groove (48) penetrating the pad (42) to form a sampling hole, the sampling hole being disposed corresponding to the weighing surface of the weighing assembly.

7. The areal density detection apparatus according to claim 4, wherein The positioning component (3) also includes a sensor (32) for identifying the mark, the sensor (32) being disposed on both sides of the sampling component (4).

8. The areal density detection apparatus according to claim 7, characterized by The sampling blades (41) are arranged in a straight line array, and the sensing point of the sensing element (32) is located on the straight line where the sampling blades (41) are located.

9. The areal density detection apparatus according to claim 4, wherein It also includes a frame frame (1), the areal density detection component (2) is disposed in the space formed by the frame (1), rollers (9) are disposed on both sides of the frame (1), the rollers (9) are slidably disposed at least in the vertical direction, and the projection of the sliding plane of the rollers (9) on the vertical plane is at least parallel to the sliding plane of one of its areal density meters (21), and the sampling component (4) is disposed on the side of the rollers (9) away from the frame (1).

10. The areal density detection device according to claim 9, characterized in that, A sliding rod (6) is connected to the side wall of the frame (1). A sliding sleeve (7) is provided on the sliding rod (6). The sliding sleeve (7) is arc-shaped and the two ends of the sliding sleeve (7) are connected by an adjusting member. The adjusting member is used to adjust the distance between the two ends of the sliding sleeve (7). The sliding sleeve (7) is connected to the roller (9).

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