Surface density detection device

Abstract

The utility model discloses a surface density detection device, which relates to the technical field of surface density detection and comprises a ray emission assembly, a ray receiver is arranged below the ray emission assembly, and a protective shell for bearing and protecting the ray receiver is arranged outside the ray receiver; a wiping piece is arranged on the protective shell and comprises a rotating stand column and a driving structure, the rotating stand column is rotationally arranged in the protective shell and penetrates through the top end of the protective shell to extend to the outside, the driving structure is arranged in the protective shell, and the top of the rotating stand column is fixedly connected with a wiping framework. According to the utility model, before the ray receiver receives the rays which are emitted by the ray emission assembly and penetrate through the pole piece, the driving structure in the wiping piece drives the rotating stand column to rotate, and the wiping framework is driven to wipe the receiving surface of the ray receiver, so that the influence of residues and scraps falling from the pole piece on the intensity of the received rays is eliminated; therefore, the detection precision of the surface density of the pole piece can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of surface density detection, in particular to a surface density detection device. Background Art

[0002] In the lithium battery manufacturing industry, the surface density detection of the electrode is one of the important processing steps, which can help ensure the quality and performance of lithium batteries, improve the consistency and stability of lithium batteries, and achieve the purpose of optimizing the production process.

[0003] In the prior art, the surface density detection device of the pole piece in the lithium battery is generally composed of a ray emitting device and a ray receiving device distributed above and below the pole piece. When the ray penetrates the pole piece, it is reflected, scattered, and absorbed by the pole piece, resulting in a certain attenuation of the intensity of the penetrating ray relative to the intensity of the incident ray. The attenuation ratio is in a negative exponential relationship with the surface density of the penetrated pole piece. By measuring the ray intensity before and after penetration, the surface density of the object can be inferred.

[0004] However, it was found during actual use that when the pole piece sheet is transmitted between the ray emitting device and the ray receiving device to change the detection position on the pole piece, the debris on the pole piece falls to the receiving lens position of the ray receiving device below due to the shaking or vibration in the transmission process, causing the receiving position of the ray receiving device to be blocked, affecting the accuracy of the ray receiving intensity, resulting in an increase in the surface density detection error of the pole piece. For this reason, a surface density detection device is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a surface density detection device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a surface density detection device, comprising:

[0007] A ray emitting assembly, wherein a ray receiver is provided below the ray emitting assembly, a gap is provided between the ray emitting assembly and the ray receiver for the pole piece to pass through, and a protective shell for carrying and protecting the ray receiver is provided outside the ray receiver;

[0008] Wherein, the protective housing is provided with a wiping piece for wiping the top of the radiation receiver, and the wiping piece includes:

[0009] A rotating column is rotatably arranged inside the protective shell and extends through the top of the protective shell to the outside, and a wiping frame is fixedly connected to the top of the rotating column. The wiping frame can be rotated to contact the top of the radiation receiver for wiping;

[0010] A driving structure is arranged inside the protective shell, and the driving structure can drive the rotating column to rotate inside the protective shell.

[0011] Preferably, a mounting groove is provided on a side of the wiping frame facing the radiation receiver, at least two rotatable wiping rollers are provided in the mounting groove, and the upper surface of the radiation receiver protrudes from the top of the protective shell and can contact the outer wall of the wiping roller.

[0012] Preferably, the driving structure comprises a transmission gear fixedly connected to the outer wall of the rotating column, a rack plate meshing with the outer wall of the rotating column is provided inside the wiping member, and a telescopic cylinder for driving the rack plate to move back and forth along a horizontal straight line is fixed inside the wiping member.

[0013] Preferably, detachable mounting seats are embedded at both sides of the mounting slot on the wiping frame, and both ends of the wiping roller are movably plugged into the mounting seats at corresponding positions.

[0014] Preferably, the protective shell includes a sealing base fixedly arranged at the bottom end of the radiation receiver, and a positioning frame used for limiting the positioning of the radiation receiver on the sealing base is fixedly arranged at the top end of the sealing base.

[0015] Preferably, a receiver shell is sleeved on the outside of the sealing base, a connecting portion bent toward the inside of the receiver shell is provided at the bottom of the receiver shell, and connecting through holes are provided at positions on the sealing base corresponding to the connecting portion.

[0016] Technical effects and advantages of the utility model:

[0017] The utility model can drive the rotating column to rotate through the driving structure in the wiping member before the ray receiver receives the ray emitted by the ray emitting component and penetrating the pole piece, so as to drive the wiping skeleton to wipe the receiving surface of the ray receiver, thereby eliminating the influence of the residues and debris dropped from the pole piece on the intensity of the received ray, thereby helping to improve the accuracy of the pole piece surface density detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the split structure of the ray receiving component of the utility model.

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the receiver housing of the utility model.

[0021] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a receiver housing of the utility model in a top view.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the wiping member of the utility model when viewed from above.

[0023] In the figure: 100, ray emitting assembly; 200, ray receiver; 201, receiver housing; 202, sealing base; 203, positioning frame; 204, connecting part; 300, protective shell; 400, wiping member; 401, rotating column; 402, transmission gear; 403, rack plate; 404, telescopic cylinder; 405, wiping skeleton; 406, mounting slot; 407, wiping roller; 408, mounting seat; 500, driving structure. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides Figure 1-5 The surface density detection device shown in the figure includes a ray emitting component 100, a ray receiver 200 is arranged below the ray emitting component 100, and a gap is provided between the ray emitting component 100 and the ray receiver 200 for the pole piece to pass through, and the pole piece passes through the gap between the ray emitting component 100 and the ray receiver 200. In this way, after the ray emitting component 100 emits rays, the rays penetrate the pole piece between the two and are received by the ray receiver 200. By measuring the intensity of the rays emitted on the ray emitting component 100 and the intensity of the rays received on the ray receiver 200, and using the formula Wherein I0 is the initial ray intensity, I is the ray intensity after the transmission pole piece, λ is the absorption coefficient of the pole piece to be measured, and m is the surface thickness of the pole piece to be measured; the outside of the ray receiver 200 is provided with a protective shell 300 for carrying and protecting the ray receiver 200, and the protective shell 300 includes a sealing base 202 fixedly arranged at the bottom end of the ray receiver 200, and a positioning frame 203 for limiting the position of the ray receiver 200 on the sealing base 202 is fixedly arranged at the top of the sealing base 202, and a receiver shell 201 is sleeved on the outside of the sealing base 202, and a bottom end of the receiver shell 201 is provided with a positioning frame 203 for limiting the position of the ray receiver 200 on the sealing base 202. 1, the connection part 204 is bent inwardly, and the sealing base 202 is provided with connection through holes at positions corresponding to the connection part 204. The positioning frame 203 can make the radiation receiver 200 more stably placed on the sealing base 202, and at the same time, it is matched with the receiver shell 201 to cover the outside of the radiation receiver 200, so as to achieve the function of safety protection and facilitate the installation of the subsequent wiper 400. The connection part 204 bent inwardly on the receiver shell 201 can facilitate the connection and disassembly between the receiver shell 201 and the sealing base 202, so as to facilitate the maintenance of the radiation receiver 200 inside.

[0026] Among them, the protective shell 300 is provided with a wiping piece 400 for wiping the top of the radiation receiver 200, and the wiping piece 400 includes: a rotating column 401 rotatably arranged inside the protective shell 300 and extending through the top of the protective shell 300 to the outside, and a driving structure 500 arranged inside the protective shell 300, a wiping skeleton 405 is fixedly connected to the top of the rotating column 401, and the wiping skeleton 405 can be rotated to contact with the top of the radiation receiver 200 for wiping, and the driving structure 500 can drive the rotating column 401 to rotate in the protective shell 300, and the wiping skeleton 405 is driven by the driving structure 500 to rotate on the upper surface position of the receiver shell 201, and the purpose of wiping the receiving end of the radiation receiver 200 can be achieved by the relative movement between the wiping skeleton 405 and the radiation receiver 200, so as to avoid the influence of debris dropped during the transmission of the pole piece on the accuracy of radiation intensity reception; further, the wiping skeleton 405 is provided with an installation on the side of the radiation receiver 200 The installation slot 406 is provided with at least two rotatable wiping rollers 407. The upper surface of the radiation receiver 200 protrudes from the top of the protective shell 300 and can contact the outer wall of the wiping roller 407. By installing the wiping roller 407, when the wiping frame 405 rotates, the wiping roller 407 can be driven to rotate when it contacts the surface of the radiation receiver 200, so that the debris on the surface of the radiation receiver 200 can be adhered, thereby improving the cleaning effect and helping In order to protect the receiving end surface of the radiation receiver 200 from scratches, at the same time, detachable mounting seats 408 are embedded at both sides of the mounting slot 406 on the wiping frame 405, and the two ends of the wiping roller 407 are respectively movably connected with the mounting seats 408 at the corresponding positions. The detachable installation of the mounting seats 408 enables the wiping roller 407 to be not only rotatably installed on the wiping frame 405, but also to be disassembled for cleaning or replacement, making the use of the wiping roller 407 more flexible.

[0027] In a preferred embodiment, the driving structure 500 includes a transmission gear 402 fixedly connected to the outer wall of the rotating column 401, a rack plate 403 meshing with the outer wall of the rotating column 401 is provided inside the wiping member 400, and a telescopic cylinder 404 for driving the rack plate 403 to move back and forth along a horizontal straight line is fixedly provided inside the wiping member 400. The telescopic cylinder 404 is controlled by an external air pump and a control switch to be extended and retracted, thereby driving the rack plate 403 to move back and forth horizontally, driving the transmission gear 402 and the rotating column 401 fixed thereto to rotate, thereby driving the wiping skeleton 405 to rotate.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A surface density detection device, characterized in that: include: A ray emitting assembly (100), wherein a ray receiver (200) is provided below the ray emitting assembly (100), a gap is provided between the ray emitting assembly (100) and the ray receiver (200) for a pole piece to pass through, and a protective shell (300) is provided outside the ray receiver (200) for carrying and protecting the ray receiver (200); Wherein, the protective housing (300) is provided with a wiping piece (400) for wiping the top of the radiation receiver (200), and the wiping piece (400) comprises: A rotating column (401) is rotatably arranged inside the protective shell (300) and penetrates the top of the protective shell (300) to extend to the outside, a wiping frame (405) is fixedly connected to the top of the rotating column (401), and the wiping frame (405) can be rotated to contact the top of the radiation receiver (200) for wiping; A driving structure (500) is arranged inside the protective shell (300), and the driving structure (500) can drive the rotating column (401) to rotate inside the protective shell (300).

2. A surface density detection device according to claim 1, characterized in that: The wiping frame (405) is provided with a mounting groove (406) on a side facing the radiation receiver (200), and at least two rotatable wiping rollers (407) are arranged in the mounting groove (406). The upper surface of the radiation receiver (200) protrudes from the top of the protective shell (300) and can contact the outer wall of the wiping roller (407).

3. A surface density detection device according to claim 2, characterized in that: The driving structure (500) comprises a transmission gear (402) fixedly connected to the outer wall of the rotating column (401); a rack plate (403) which can mesh with the outer wall of the rotating column (401) is provided inside the wiping member (400); and a telescopic cylinder (404) for driving the rack plate (403) to move back and forth along a horizontal straight line is fixedly provided inside the wiping member (400).

4. A surface density detection device according to claim 2, characterized in that: The wiping frame (405) is provided with detachable mounting seats (408) at both sides of the mounting slot (406), and the two ends of the wiping roller (407) are movably connected to the mounting seats (408) at corresponding positions.

5. The surface density detection device according to claim 1, characterized in that: The protective shell (300) comprises a sealing base (202) fixedly arranged at the bottom end of the radiation receiver (200), and a positioning frame (203) used for limiting the position of the radiation receiver (200) on the sealing base (202) is fixedly arranged at the top end of the sealing base (202).

6. A surface density detection device according to claim 5, characterized in that: The sealing base (202) is provided with a receiver housing (201) on its exterior, the receiver housing (201) is provided with a connecting portion (204) bent toward the inside of the receiver housing (201) at the bottom end, and connecting through holes are provided at positions corresponding to the connecting portion (204) on the sealing base (202).

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