Screening device for testing fiber foreign matters of graphite negative electrode material

Abstract

The utility model provides a screening device for graphite negative electrode material fiber foreign matter testing, and belongs to the technical field of graphite negative electrode material testing. The bearing plate is arranged below the top plate in parallel, and a placing groove is formed in the bearing plate; the mounting plate is parallel to the top plate and detachably arranged between the top plate and the bearing plate, a stroke hole is formed in the middle of the mounting plate, a pair of sliding rods are erected on the mounting plate in parallel, and the two sliding rods are arranged in parallel and located on the two sides of the stroke hole respectively; the two sides of the vibration plate are arranged on the corresponding sliding rods in a sliding and penetrating mode respectively, a mounting hole is formed in the middle of the vibration plate, and a matching groove is downwards formed in the vibration plate area located on the peripheral side of the mounting hole and communicates with the inner wall of the mounting hole; a screen is arranged at the bottom of the screen frame, and the top of the screen frame is folded outwards to form a matching table; and the driving part is arranged between the mounting plate and the top plate. The device simplifies the screening mode of the fiber foreign matters of the graphite negative electrode material, and effectively improves the detection efficiency.

Description

Technical Field

[0001] This application belongs to the field of graphite anode material testing technology, and particularly relates to a sieving device for testing foreign matter fibers in graphite anode materials. Background Technology

[0002] In the battery manufacturing process, the quality of the graphite anode material has a crucial impact on battery performance. The presence of fibrous foreign matter can lead to internal short circuits, impaired charge / discharge performance, and battery swelling and deformation, severely affecting battery safety and lifespan.

[0003] Currently, the main method for testing graphite anode materials for fiber foreign matter is to manually sieve them using a sieve. This sieve method is inefficient and difficult to operate, and cannot meet the requirements for high-efficiency testing. Utility Model Content

[0004] To address the shortcomings of the prior art, this application provides a sieving device for testing foreign matter in graphite anode materials, which simplifies the sieving process for foreign matter in graphite anode materials and effectively improves detection efficiency.

[0005] To achieve the above objectives, the present invention employs the following technology:

[0006] A sieving device for testing foreign matter in graphite anode materials, comprising:

[0007] The top plate has a material drop hole in the middle.

[0008] A support plate is positioned parallel to the bottom of the top plate, and a placement groove is provided on the support plate for placing a container to hold the graphite negative electrode material.

[0009] A mounting plate is parallel to the top plate and detachably installed between the top plate and the support plate. A stroke hole is opened in the middle of the mounting plate. A pair of sliding rods are mounted parallel to each other on the mounting plate. The two sliding rods are arranged in parallel and are located on both sides of the stroke hole.

[0010] The vibrating plate has its two sides slidably mounted on corresponding sliding rods. The vibrating plate has a mounting hole in the middle and a mating groove is formed in the vibrating plate area around the mounting hole. The mating groove is connected to the inner wall of the mounting hole.

[0011] The screen frame is sized to match the mounting holes. The bottom of the screen frame is equipped with a screen mesh, and the top of the screen frame is folded outward to form a mating platform, which is used to mate with the mating groove so that the screen frame is located within the mounting holes and the stroke holes.

[0012] The drive unit, located between the mounting plate and the top plate, is used to drive the vibrating plate to vibrate.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. Through the detachable mounting plate and the detachable connection between the vibrating plate and the screen frame, and in conjunction with the drive unit, automatic sieving of graphite anode materials is achieved, which has high sieving efficiency, simplifies sieving operation, and facilitates the replacement and cleaning of the screen frame and the maintenance of the mounting plate and the vibrating plate.

[0015] 2. The strip plates are arranged in a V-shape. After the pin is inserted into the corresponding pin hole, the strip plates, columns, and mounting plates form a triangular structure, which restricts the degrees of freedom of the mounting plates and improves the stability of the mounting plates when the vibrating plate vibrates. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the device according to an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the top plate structure in an embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the structure of the vibration plate implemented in this application.

[0019] Figure 4 This is a schematic diagram of the structure of the strip plate in an embodiment of this application.

[0020] Figure 5 This is a schematic diagram of the structure of the sieve frame in an embodiment of this application.

[0021] Figure 6 yes Figure 3 A magnified view of part A in the middle.

[0022] Reference numerals in the attached drawings: 1-Top plate, 11-Discharge hole, 12-Column, 13-Mounting groove, 14-Matching hole, 15-Strip plate, 16-Connecting rod, 17-Matching shaft, 18-Pin rod, 19-Bracket, 2-Bearing plate, 21-Placement groove, 3-Mounting plate, 31-Stroke hole, 32-Slide rod, 33-Pin hole, 34-Support plate, 35-Second spring, 36-Positioning block, 4-Vibrating plate, 41-Mounting hole, 42-Matching groove, 43-Mounting rod, 44-Rotating rod, 5-Screen frame, 51-Screen mesh, 52-Matching platform, 6-Drive unit, 61-Cam, 62-Motor, 7-Feed hopper, 8-First spring. Detailed Implementation

[0023] To make the objectives, technical solutions and advantages of the present utility model clearer, the implementation methods of the present utility model will be described in detail below with reference to the accompanying drawings. However, the embodiments described in the present utility model are only some embodiments of the present utility model, and not all embodiments.

[0024] This application provides a sieving device for testing foreign matter in graphite anode materials, such as... Figures 1-5As shown, it includes: top plate 1, bearing plate 2, mounting plate 3, vibrating plate 4, screen frame 5, drive unit 6, etc.

[0025] Among them, such as Figure 1 and Figure 2 As shown, the top plate 1 is square, and a material discharge hole 11 is provided in the middle of the top plate 1. A feeding hopper 7 is also provided on the top surface of the top plate 1. The bottom end of the feeding hopper 7 is connected to the material discharge hole 11. The feeding hopper 7 can effectively ensure that the graphite negative electrode material enters the material discharge hole 11 and avoid spillage, thereby affecting the accuracy of the test.

[0026] like Figure 1 and Figure 2 As shown, the support plate 2 is arranged parallel to the bottom of the top plate 1, and a circular placement groove 21 is provided on the support plate 2 for placing a beaker that receives the graphite negative electrode material.

[0027] like Figure 1 and Figure 3 As shown, the mounting plate 3 is square and parallel to the top plate 1 and is detachably disposed between the top plate 1 and the bearing plate 2. A rectangular travel hole 31 is provided in the middle of the mounting plate 3. A pair of sliding rods 32 are mounted parallel to each other on the mounting plate 3. The two sliding rods 32 are arranged in parallel and are located on both sides of the travel hole 31. The plane formed by the axes of the two sliding rods 32 is parallel to the mounting plate 3.

[0028] like Figure 1 and Figure 3 As shown, the vibrating plate 4 is square and is positioned along the length of the slide rod 32. The two sides of the vibrating plate 4 slide onto the corresponding slide rods 32. A square mounting hole 41 is provided in the center of the vibrating plate 4. A mating groove 42 is provided downwards in the area of ​​the vibrating plate 4 surrounding the mounting hole 41, and the mating groove 42 connects to the inner wall of the mounting hole 41. The screen frame 5 has a square frame structure, and its dimensions match the mounting hole 41. The top of the screen frame 5 is folded outwards at a 90-degree angle to form a mating platform 52 that matches the mating groove 42. A screen mesh 51 is provided at the bottom of the screen frame 5. When installing the screen frame 5, the outer wall of the screen frame 5 is vertically inserted into the mounting hole 41 and the stroke hole 31, with the inner wall of the mounting hole 41 against it, until the mating platform 52 at the top of the screen frame 5 is embedded in the mating groove 42, thus completing the installation of the screen frame 5. The driving unit 6 is located between the mounting plate 3 and the top plate 1 and is used to drive the vibrating plate 4 to vibrate.

[0029] In application, the sieve frame 5 is divided into multiple types according to the mesh size of its bottom sieve 51. The operator selects the corresponding sieve frame 5 according to the required mesh size and installs the sieve frame 5 on the vibrating plate 4 in the above installation method. Then, the mounting plate 3 is installed between the top plate 1 and the bearing plate 2, and the beaker is placed in the placement groove 21. The operator pours the graphite negative electrode material into the feed hopper 7. The graphite negative electrode material enters the sieve frame 5 through the discharge hole 11 and falls onto the sieve 51. The drive unit 6 drives the vibrating plate 4 to vibrate at a low frequency along the length direction of the slide rod 32. Since the sieve frame 5 is fitted into the mounting hole 41 and the mating platform 52 is embedded in the mating groove 42, the vibrating plate 4 drives the sieve frame 5 to vibrate together, thereby screening out fibrous foreign objects through the sieve 51. During the vibration of the sieve frame 5, the screened graphite negative electrode material is collected by the beaker placed on the placement groove 21. By detaching the mounting plate 3 and the vibrating plate 4 and the screen frame 5, and with the drive of the drive unit 6, automatic sieving of graphite negative electrode materials is achieved. It has high sieving efficiency, simplifies sieving operation, and facilitates the replacement and cleaning of the screen frame 5 and the maintenance of the mounting plate 3 and the vibrating plate 4.

[0030] Preferred, such as Figure 5 and Figure 6 As shown, to ensure that the screen frame 5 can vibrate stably with the vibrating plate 4, the depth of the mating groove 42 can be set to be equal to the height of the mating platform 52. Mounting rods 43 are vertically mounted on the vibrating plate 4 at both ends of the mounting hole 41. A rotating rod 44 is coaxially mounted on the mounting rod 43, with the bottom surface of the rotating rod 44 always in contact with the top surface of the vibrating plate 4. When the rotating rod 44 rotates to a predetermined angle, the projection of the end of the rotating rod 44 along the height direction of the vibrating plate 4 is located within the mating groove 42. That is, when the mating platform 52 is embedded in the mating groove 42, the top surface of the mating platform 52 is coplanar with the top surface of the vibrating plate 4. Rotating the rotating rod 44 to a predetermined angle locks the mating platform 52 between the rotating rod 44 and the mating groove 42, thereby achieving relative fixation of the screen frame 5 and ensuring that the screen frame 5 vibrates with the vibrating plate 4, effectively improving the reliability of the screening device.

[0031] Specifically, such as Figures 1-4As shown, each of the four corners of the top plate 1 is provided with a vertical column 12. Each column 12 has a mounting groove 13 on one side along the length of the top plate 1. The width of the groove is equal to the thickness of the mounting plate 3. The distance between the bottom surfaces of two opposite mounting grooves 13 is equal to the width of the mounting plate 3. Both ends of the top plate 1 have mating holes 14 along its width direction. The middle of the side of the mounting plate 3 has two pin holes 33 along its width direction. The pin holes 33 are arranged along the length direction of the mounting plate 3. The side of the top plate 1 has two V-shaped strip plates 15. The strip plates 15 are parallel to the side of the top plate 1. The two strip plates 15 are connected by a connecting rod 16 that is arranged along the length of the top plate 1. At one end of the two strip plates 15, that is, at the separated end of the two strip plates 15, a mating shaft 17 is provided vertically. The mating shaft 17 slides through the corresponding mating hole 14. At the other end of the strip plates 15, that is, at the close end of the two strip plates 15, a pin 18 is provided vertically. The two pins 18 are used to pass through the corresponding pin holes 33. A first spring 8 is sleeved on the mating shaft 17. The first spring 8 is connected between the strip plate 15 and the side of the top plate 1. When the first spring 8 is in its natural state, the end of the pin 18 is located between two opposite mounting grooves 13.

[0032] When applying, such as Figures 1-3 As shown, first pull the connecting rod 16 to both sides of the top plate 1. The first spring 8 is stretched, causing the end of the pin 18 to move to both sides of the top plate 1, thereby exiting between the two corresponding mounting slots 13. After installing the screen frame 5, insert the mounting plate 3 into the mounting slot 13 parallel to the top plate 1 from one side of the column 12 until the four corners of the mounting plate 3 are respectively fitted into the mounting slots 13 of the corresponding columns 12. At this time, the axes of the two pin holes 33 on the mounting plate 3 are respectively aligned with the axes of the corresponding pins 18. Release the connecting rod 16, the first spring 8 retracts, and drives the pins 18 to be inserted into the corresponding pin holes 33 respectively, thereby completing the installation of the mounting plate 3.

[0033] The strip plate 15 is arranged in a V-shape. After the pin 18 is inserted into the corresponding pin hole 33, the strip plate 15, the column 12, and the mounting plate 3 form a triangular structure, which restricts the degrees of freedom of the mounting plate 3 and improves the stability of the mounting plate 3 when the vibrating plate 4 vibrates.

[0034] Preferred, such as Figures 1-3 As shown, a positioning block 36 can be set at one end of both sides of the mounting plate 3. When both sides of the mounting plate 3 are inserted into the mating groove 13 and the positioning block 36 abuts against one side of the column 12, the axes of the two pin holes 33 on the mounting plate 3 coincide with the axes of the corresponding pin rods 18. The positioning block 36 can effectively position the mounting plate 3, which facilitates the mating of the pin rods 18 and the pin holes 33, and simplifies the installation method of the mounting plate 3.

[0035] Specifically, such as Figure 1 and Figure 3As shown, both ends of the slide rod 32 are vertically provided with support plates 34, which are fixedly mounted on the mounting plate 3. A second spring 35 is sleeved on the slide rod 32, and the second spring 35 connects the support plate 34 and the end face of the vibrating plate 4. Figure 1 and Figure 2 As shown, a bracket 19 is provided on the bottom surface of the top plate 1. The bracket 19 is a folded plate, with its horizontal part parallel to the bottom of the top plate 1. The drive unit 6 includes a motor 62 fixed on the horizontal part of the bracket 19. Its drive end is perpendicularly inserted through the horizontal part of the bracket 19 and connected to a cam 61. The distal end of the cam 61, that is, the end away from the axis of the drive end of the motor 62, is used to push the end face of the vibrating plate 4. When the motor 62 drives the cam 61 to rotate, the distal end of the cam 61 pushes the end face of the vibrating plate 4, causing the vibrating plate 4 to move along the slide rod 32 and compressing the second spring 35. When the distal end of the cam 61 separates from the end face of the vibrating plate 4, the second spring 35 extends, pushing the vibrating plate 4 back to its original position. The motor 62 continues to drive the distal end of the cam 61 to abut against the end face of the vibrating plate 4, forming a reciprocating motion, thereby realizing the vibration of the vibrating plate 4 along the length direction of the slide rod 32. By setting the motor 62 and cooperating with the cam 61 and the vibrating plate 4, the vibration of the screen frame 5 is realized, which simplifies the screening method of graphite negative electrode material, improves the detection efficiency of fiber foreign matter, and has a simpler structure and lower production cost.

[0036] The above description is only a preferred embodiment of this application and is not intended to limit this application. Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application.

Claims

1. A sieving device for testing foreign matter in graphite anode materials fibers, characterized in that, include: Top plate (1), with a material drop hole (11) in the middle; The support plate (2) is arranged parallel to the bottom of the top plate (1). The support plate (2) has a placement groove (21) for placing a container to receive the graphite negative electrode material. Mounting plate (3) is parallel to top plate (1) and detachably mounted between top plate (1) and bearing plate (2). A stroke hole (31) is provided in the middle of mounting plate (3). A pair of sliding rods (32) are mounted on mounting plate (3) in parallel. The two sliding rods (32) are set in parallel and located on both sides of stroke hole (31). The vibrating plate (4) is slidably mounted on the corresponding sliding rod (32) on both sides. The vibrating plate (4) has an installation hole (41) in the middle. The area of ​​the vibrating plate (4) around the installation hole (41) has a mating groove (42) downward. The mating groove (42) is connected to the inner wall of the installation hole (41). The screen frame (5) is sized to match the mounting hole (41). The bottom of the screen frame (5) is provided with a screen mesh (51). The top of the screen frame (5) is folded outward to form a mating platform (52) for mating with the mating groove (42) so that the screen frame (5) is located in the mounting hole (41) and the stroke hole (31). The drive unit (6) is located between the mounting plate (3) and the top plate (1) and is used to drive the vibrating plate (4) to vibrate.

2. The sieving device for testing foreign matter in graphite anode materials according to claim 1, characterized in that, The top plate (1) and the mounting plate (3) are both square. There are vertical columns (12) at the four corners of the top plate (1). Each column (12) has a mounting groove (13) on one side along the length of the top plate (1). The width of the groove is equal to the thickness of the mounting plate (3). The distance between the bottom surfaces of two mounting grooves (13) is equal to the width of the mounting plate (3).

3. The sieving device for testing foreign matter in graphite anode materials according to claim 2, characterized in that, Both ends of the top plate (1) are provided with mating holes (14) along its width direction. The middle of the side of the mounting plate (3) is provided with two pin holes (33) along its width direction. The pin holes (33) are arranged along the length direction of the mounting plate (3). The side of the top plate (1) is provided with two strip plates (15) arranged in a V shape. The two strip plates (15) are connected by a connecting rod (16). One end of the strip plate (15) is provided with a mating shaft (17) vertically. The mating shaft (17) slides through the corresponding mating hole (14). The other end of the strip plate (15) is provided with a pin (18) vertically, which is used to pass through the corresponding pin hole (33). A first spring (8) is sleeved on the mating shaft (17). The first spring (8) is connected between the strip plate (15) and the side of the top plate (1).

4. The sieving device for testing foreign matter in graphite anode materials according to claim 1, characterized in that, The slide bar (32) has support plates (34) at both ends, and the support plates (34) are fixed on the mounting plate (3).

5. A sieving device for testing foreign matter in graphite anode materials according to claim 4, characterized in that, A second spring (35) is fitted on the slide bar (32), and the second spring (35) is connected between the support plate (34) and one end of the vibrating plate (4).

6. A sieving device for testing foreign matter in graphite anode materials according to claim 5, characterized in that, The bottom surface of the top plate (1) is provided with a bracket (19), and the drive unit (6) includes a cam (61) located at the other end of the vibrating plate (4). The cam (61) is located between two slide rods (32) and is used to push the end face of the vibrating plate (4). The cam (61) is driven by a motor (62) located on the bracket (19).

Images