Battery carbon rod detection sorting machine

The battery carbon rod inspection and sorting machine using a synchronous toothed belt and camera air nozzle solves the problems of high false negative rate and low automation in battery carbon rod inspection equipment, and achieves efficient and accurate defect removal and automated production.

CN121607336APending Publication Date: 2026-03-06WENLING SHENGGUANG CELL EQUIP PLANT
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Patent Information

Application Number
CN202610050425.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-15
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

Existing battery carbon rod testing equipment suffers from problems such as high false negative rate, low automation, low production efficiency and reliance on manual intervention. In particular, it cannot effectively detect and remove defective products during high-speed, high-volume production.

Method used

The inspection and sorting machine, which includes a synchronous toothed belt, a camera, and an air nozzle, identifies defects through the camera and controls the air nozzle to blow them off. Combined with the feeding conveyor, the first sorting and transfer mechanism, it realizes automated conveying and defect removal.

Benefits of technology

It reduces missed detections, improves the efficiency and accuracy of rejecting defective carbon rods, reduces production costs and human error, and enhances production efficiency and consistency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a battery carbon rod detecting and sorting machine which comprises a second sorting mechanism, the second sorting mechanism comprises a synchronous cog belt and a sorting driving motor, the sorting driving motor drives the synchronous cog belt to move, and the second sorting mechanism further comprises a first camera, a second camera, a third camera and a blowing nozzle which are sequentially arranged on the synchronous cog belt. The first camera and the second camera are located on the two sides of the synchronous cog belt respectively and arranged in a front-back staggered mode, a plurality of battery carbon rods are placed on the synchronous cog belt, and the first camera, the second camera and the third camera shoot pictures of the battery carbon rods and transmit the pictures to the controller to recognize end notches and the defective battery carbon rods with too long or too short lengths. And the controller controls the blowing nozzle to blow off the defective battery carbon rod. According to the battery carbon rod detecting and sorting machine, defective battery carbon rods can be sorted out, the influence on the quality of qualified carbon rods is avoided, the removing efficiency and accuracy are improved, and the problem of missing detection is reduced.
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Description

Technical Field

[0001] This invention belongs to the field of battery carbon rod production technology and relates to a battery carbon rod detection and sorting machine. Background Technology

[0002] As a key component of batteries, the quality of battery carbon rods directly affects battery performance, lifespan, and safety. However, quality control of battery carbon rods faces numerous challenges in traditional production processes, especially due to the limitations of manual inspection, which cannot effectively handle high production speeds and high precision requirements. This leads to defective products not being removed in a timely manner, thus affecting the overall battery quality. Currently, although machine vision technology is widely used in industrial inspection, it still faces several problems in defect detection of battery carbon rods. First, due to the complex shape and surface condition of battery carbon rods, existing technologies may miss some minor defects when handling comprehensive defect detection, thus affecting product quality control. Furthermore, while there has been progress in automation and intelligence, many production lines still cannot completely eliminate manual operation. Especially in the defect removal and packaging processes, many production lines still rely on manual intervention, which not only reduces production efficiency but also increases the possibility of human error. This reliance on manual labor affects the stability and consistency of the production line, making it impossible to guarantee that every carbon rod is accurately inspected and processed. Simultaneously, existing conveying systems and inspection equipment are prone to problems such as carbon rod overlap, missed detections, and misalignment when handling high-speed, high-volume production. Because overlapping of carbon rods was not effectively avoided during the conveying process, the detection system could not perform timely and accurate independent inspection of each carbon rod, increasing the risk of missed detections and thus affecting the final product's pass rate. In summary, current carbon rod defect detection and sorting still suffer from problems such as insufficient comprehensive inspection, low automation, low production efficiency, and excessive manual intervention. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the prior art by providing a battery carbon rod detection and sorting machine that reduces missed detections.

[0004] The objective of this invention can be achieved through the following technical solution: a battery carbon rod detection and sorting machine, including a second sorting mechanism, the second sorting mechanism including a synchronous toothed belt and a sorting drive motor, the sorting drive motor driving the synchronous toothed belt to move, the second sorting mechanism further including a first camera, a second camera, a third camera and an air nozzle arranged sequentially on the synchronous toothed belt, the first camera and the second camera being located on both sides of the synchronous toothed belt and staggered front and back, a plurality of battery carbon rods being placed on the synchronous toothed belt, the first camera, the second camera and the third camera taking pictures of the battery carbon rods and transmitting them to a controller to identify defective battery carbon rods with end notches and lengths that are too long or too short, the controller controlling the air nozzle to blow off the defective battery carbon rods.

[0005] In the aforementioned battery carbon rod inspection and sorting machine, a plurality of sorting grooves for placing battery carbon rods are uniformly formed on the synchronous toothed belt. A sorting baffle is also arranged parallel above the synchronous toothed belt. A first detection notch is formed on the sorting baffle at a position corresponding to the first camera, and a second detection notch is formed on the sorting baffle at a position corresponding to the second camera. The two ends of the battery carbon rod are exposed sequentially from the first detection notch and the second detection notch, respectively. The first camera takes a picture of the end of the battery carbon rod exposed from the first detection notch to identify end defects. The second camera takes a picture of the end of the battery carbon rod exposed from the second detection notch to identify end defects. A third camera is located above the synchronous toothed belt. Two third detection notches are formed on the sorting baffle. The third detection notches are located directly below the third camera. The two ends of the battery carbon rod are exposed from the third detection notches. The third camera takes a picture of the battery carbon rod exposed from the third detection notches to identify the length of the battery carbon rod.

[0006] In the aforementioned battery carbon rod inspection and sorting machine, the air nozzle is located on the side of the synchronous toothed belt. The air inlet of the air nozzle is connected to an air compressor via an air pipe, and the air outlet of the air nozzle faces the synchronous toothed belt. It can blow off the defective battery carbon rods on the synchronous toothed belt by outputting a strong airflow. A recovery pipe is also provided on the side of the synchronous toothed belt. The recovery pipe is arranged opposite to the air nozzle, and a recovery frame is provided below the recovery pipe. The defective battery carbon rods blown off by the air nozzle fall into the recovery frame through the recovery pipe.

[0007] The battery carbon rod detection and sorting machine described above also includes a feeding and conveying mechanism, a first sorting mechanism, and a transfer mechanism. The battery carbon rods pass through the feeding and conveying mechanism, the first sorting mechanism, and the transfer mechanism in sequence and are then located on the synchronous toothed belt.

[0008] In the aforementioned battery carbon rod detection and sorting machine, the feeding and conveying mechanism includes a feeding conveyor belt and a feeding motor. The feeding motor drives the feeding conveyor belt to move. Several battery carbon rods are placed on the feeding conveyor belt. A pressing baffle is also provided parallel above the feeding conveyor belt. The longitudinal space between the pressing baffle and the feeding conveyor belt allows the battery carbon rods lying flat on the feeding conveyor belt to pass through.

[0009] In the aforementioned battery carbon rod detection and sorting machine, the first sorting mechanism includes a sorting block connected to the feeding conveyor belt. The sorting block has a sorting drop hole in its center, and a sorting baffle is provided above the sorting block, extending above the feeding conveyor belt. The battery carbon rods on the feeding conveyor belt move to the sorting block and are pressed forward by subsequent battery carbon rods. When the middle of a battery carbon rod breaks, it falls into the sorting drop hole. Unbroken battery carbon rods continue to move forward to the transfer mechanism under the pressure of subsequent battery carbon rods.

[0010] In the aforementioned battery carbon rod inspection and sorting machine, the transfer mechanism includes a single-track curved-straight flow channel, a brush wheel, and a guide wheel. The inlet of the single-track curved-straight flow channel is connected to the tail of the first sorting mechanism. The single-track curved-straight flow channel includes a connected curved flow channel and a vertical straight flow channel. The curved flow channel is located above the straight flow channel. The single-track curved-straight flow channel is used to arrange the battery carbon rods for vertical placement. The brush wheel is driven to rotate by a brush wheel motor. The side of the single-track curved-straight flow channel has an opening for the brush wheel to pass through. The brush wheel enters the opening and contacts the battery carbon rod. The rotation of the brush wheel assists in moving the battery carbon rod in the single-track curved flow channel downward. The guide wheel is provided with several guide wheel grooves evenly spaced on its circumference to accommodate one battery carbon rod. The guide wheel is driven to rotate by the guide wheel motor. The battery carbon rod on the first sorting mechanism moves to the single-track curved flow channel. The battery carbon rod falling in the single-track curved flow channel enters the guide wheel groove on the guide wheel. The guide wheel drives the battery carbon rod to rotate to the second sorting mechanism.

[0011] Compared with existing technologies, this battery carbon rod detection and sorting machine transmits images captured by a first, second, and third camera to a controller to identify defective battery carbon rods with end notches, excessive length, or excessive shortness. It then controls an air nozzle to blow away the defective carbon rods, ensuring that defective rods are sorted out and reducing missed detections. The air nozzle uses a strong airflow to quickly blow away detected defective carbon rods, ensuring they are promptly removed and preventing them from affecting the quality of qualified carbon rods, thus improving removal efficiency and accuracy. The defective carbon rods blown away by the air nozzle fall into a recycling box through a recycling tube. The collection process is carried out internally; the sorting grooves on the synchronous toothed belt allow each battery carbon rod to be placed individually and limit the placement of the battery carbon rods, avoiding overlapping or tilting of the battery carbon rods and causing missed detection, thus avoiding affecting the final product qualification rate; the first sorting mechanism sorts the battery carbon rods that are broken in the middle, causing the broken battery carbon rods to fall into the sorting drop hole; through the coordinated work of the feeding conveyor mechanism, the first sorting mechanism, the transfer mechanism, and the second sorting mechanism, the automated carbon rod conveying and defect removal are realized, reducing manual intervention, lowering production costs and human error, and improving production efficiency and consistency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the battery carbon rod detection and sorting machine.

[0013] Figure 2 This is a three-dimensional structural diagram of some components of the battery carbon rod detection and sorting machine.

[0014] In the diagram, 1. Feeding conveyor mechanism; 11. Feeding conveyor belt; 12. Pressing baffle; 2. First sorting mechanism; 21. Sorting block; 22. Sorting drop hole; 23. Sorting baffle; 3. Transfer mechanism; 31. Single-track curved straight flow channel; 32. Brush wheel; 33. Guide wheel; 34. Brush wheel motor; 4. Second sorting mechanism; 41. Synchronous toothed belt; 42. Sorting baffle; 421. First detection notch; 422. Second detection notch; 423. Third detection notch; 43. First camera; 44. Second camera; 45. Third camera; 46. Air nozzle; 47. Recycling pipe; 48. Recycling frame; 49. Sorting drive motor. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] like Figure 1 and Figure 2 As shown, this battery carbon rod detection and sorting machine includes a feeding and conveying mechanism 1, a first sorting mechanism 2, a transfer mechanism 3, and a second sorting mechanism 4.

[0017] In the above technical solution: the feeding conveyor mechanism 1 includes a feeding conveyor belt 11 and a feeding motor. The feeding motor drives the feeding conveyor belt 11 to move, and several battery carbon rods are placed on the feeding conveyor belt 11. A pressing baffle 12 is also provided parallel above the feeding conveyor belt 11. The longitudinal space between the pressing baffle 12 and the feeding conveyor belt 11 allows the battery carbon rods placed flat on the feeding conveyor belt 11 to pass through. The pressing baffle 12 prevents the battery carbon rods from overlapping during feeding, ensuring that the battery carbon rods are neatly arranged during feeding. At the same time, the pressing baffle 12 prevents the battery carbon rods from detaching from the feeding conveyor belt 11 during its movement.

[0018] In the above technical solution: the first sorting mechanism 2 includes a sorting block 21 connected to the feeding conveyor belt 11. A sorting drop hole 22 is formed in the middle of the sorting block 21. A sorting baffle 23 is provided above the sorting block 21, extending above the feeding conveyor belt 11. Battery carbon rods on the feeding conveyor belt 11 move to the sorting block 21 and are pressed forward by subsequent battery carbon rods. The sorting baffle 23 prevents the battery carbon rods from stacking, ensuring that the battery carbon rods are neatly arranged. When the middle of a battery carbon rod breaks, it falls into the sorting drop hole 22 and is discarded as a defective product. Unbroken battery carbon rods continue to move forward to the transfer mechanism 3 under the pressure of subsequent battery carbon rods.

[0019] In the above technical solution: the transfer mechanism 3 includes a single-track curved-straight flow channel 31, a brush wheel 32, and a guide wheel 33. The inlet of the single-track curved-straight flow channel 31 is connected to the tail of the first sorting mechanism 2. The single-track curved-straight flow channel 31 includes a connected curved flow channel and a vertical straight flow channel. The curved flow channel is located above the straight flow channel. The single-track curved-straight flow channel 31 is used to arrange the battery carbon rods vertically, preventing the battery carbon rods after passing through the first sorting mechanism 2 from stacking during the downward movement. At the same time, the curved flow channel can reduce the falling speed of the battery carbon rods, making them easier to arrange. The brush wheel 32 is driven to rotate by the brush wheel motor 34. The brush wheel 32 is located on the side of the single-track curved-straight flow channel 31. Specifically, the brush wheel 32 is located on the side of the straight flow channel. The side of the single-track curved-straight flow channel 31 has an opening for the brush wheel 32 to pass through. The brush wheel 32 enters the opening and contacts the battery carbon rod. The rotation of the brush wheel 32 assists in moving the battery carbon rods in the single-track curved-straight flow channel 31 downward, preventing the battery carbon rods from blocking the single-track curved-straight flow channel 31. The guide wheel 33 has several evenly spaced guide wheel grooves on its circumference, each capable of accommodating a single battery carbon rod. The guide wheel 33 is driven to rotate by a guide wheel motor. The battery carbon rod on the first sorting mechanism 2 moves to the monorail curved straight flow channel 31. The battery carbon rod falling into the monorail curved straight flow channel 31 enters the guide wheel groove on the guide wheel 33. The guide wheel 33 drives the battery carbon rod to rotate to the second sorting mechanism 4. The guide wheel 33 is used to change the direction of travel of the battery carbon rod between the monorail curved straight flow channel 31 and the second sorting mechanism 4.

[0020] In the above technical solution: the second sorting mechanism 4 includes a synchronous toothed belt 41 and a sorting drive motor 49, which drives the synchronous toothed belt 41 to move. The synchronous toothed belt 41 has multiple sorting grooves evenly formed on it for placing battery carbon rods. Each sorting groove holds one battery carbon rod. A sorting baffle 42 is also arranged parallel above the synchronous toothed belt 41. After passing through the feeding and conveying mechanism 1, the first sorting mechanism 2, and the transfer mechanism 3 in sequence, the battery carbon rods are located in the sorting grooves on the synchronous toothed belt 41, so that several battery carbon rods are placed on the synchronous toothed belt 41. The second sorting mechanism 4 also includes a first camera 43, a second camera 44, a third camera 45, and an air nozzle 46 sequentially arranged on the synchronous toothed belt 41. The first camera 43 and the second camera 44 are located on both sides of the synchronous toothed belt 41 and are staggered. A first detection notch 421 is formed on the sorting baffle 42 at the position corresponding to the first camera 43, and a second detection notch 422 is formed on the sorting baffle 42 at the position corresponding to the second camera 44. The two ends of the battery carbon rod are exposed from the first detection notch 421 and the second detection notch 422 respectively. The first camera 43 takes a picture of the end of the battery carbon rod exposed from the first detection notch 421 to identify end defects, and the second camera 44 takes a picture of the end of the battery carbon rod exposed from the second detection notch 422 to identify end defects. The third camera 45 is located above the synchronous toothed belt 41. Two opposing third detection notches 423 are formed on the sorting baffle 42, directly below the third camera 45. The ends of the battery carbon rods are exposed through the third detection notches 423. The third camera 45 photographs the exposed battery carbon rods to identify their length. An air nozzle 46 is located on the side of the synchronous toothed belt 41. The air inlet of the air nozzle 46 is connected to an air compressor via an air pipe, and the air outlet of the air nozzle 46 faces the synchronous toothed belt 41, capable of blowing off defective battery carbon rods from the synchronous toothed belt 41 by outputting a strong airflow. The first camera 43, the second camera 44, and the third camera 45 photograph the battery carbon rods and transmit the images to the controller to identify end notches and defective battery carbon rods that are too long or too short. The controller controls the solenoid valve to open the air compressor, causing the air nozzle 46 to blow off the defective battery carbon rods. The side of the synchronous toothed belt 41 is also provided with a recycling tube 47, which is arranged opposite to the air nozzle 46. A recycling frame 48 is provided below the recycling tube 47. The defective battery carbon rods blown off by the air nozzle 46 fall into the recycling frame 48 through the recycling tube 47.

[0021] In this battery carbon rod inspection and sorting machine, images captured by the first camera 43, the second camera 44, and the third camera 45 are transmitted to the controller to identify defective battery carbon rods with end notches, excessive length, or excessive shortness. The controller then controls the air nozzle 46 to blow away the defective carbon rods, ensuring that defective carbon rods are sorted out and reducing missed detections. The air nozzle 46 can quickly blow away detected defective carbon rods with a strong airflow, ensuring that defective carbon rods are promptly removed, avoiding affecting the quality of qualified carbon rods, and improving removal efficiency and accuracy. The defective battery carbon rods blown away by the air nozzle 46 fall into the recycling box 48 through the recycling pipe 47. The carbon rods are collected internally; the sorting grooves on the synchronous toothed belt 41 allow each battery carbon rod to be placed individually and limit the placement of the battery carbon rods to avoid overlapping or tilting of the battery carbon rods, which would cause missed inspections and affect the final product qualification rate; the first sorting mechanism 2 sorts the battery carbon rods that are broken in the middle, so that the broken battery carbon rods fall into the sorting drop hole 22; through the coordinated work of the feeding conveyor mechanism 1, the first sorting mechanism 2, the transfer mechanism 3, and the second sorting mechanism 4, the carbon rod conveying and defect removal are automated, reducing manual intervention, production costs and human error, and improving production efficiency and consistency.

[0022] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0023] Although this document frequently uses terms such as feeding conveyor mechanism 1; feeding conveyor belt 11; pressing baffle 12; first sorting mechanism 2; sorting block 21; sorting drop hole 22; sorting baffle 23; transfer mechanism 3; single-track curved and straight flow channel 31; brush wheel 32; guide wheel 33; brush wheel motor 34; second sorting mechanism 4; synchronous toothed belt 41; sorting baffle 42; first detection notch 421; second detection notch 422; third detection notch 423; first camera 43; second camera 44; third camera 45; air nozzle 46; recovery pipe 47; recovery frame 48; sorting drive motor 49, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

[0024] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A battery carbon rod detection and sorting machine characterized by The second sorting mechanism (4) comprises a synchronous toothed belt (41) and a sorting driving motor (49) driving the synchronous toothed belt (41) to move, and further comprises a first camera (43), a second camera (44), a third camera (45) and a blowing nozzle (46) arranged on the synchronous toothed belt (41) in sequence, wherein the first camera (43) and the second camera (44) are respectively located on two sides of the synchronous toothed belt (41) and are arranged staggered in front and back, and a plurality of battery carbon rods are placed on the synchronous toothed belt (41), the first camera (43), the second camera (44) and the third camera (45) take photos of the battery carbon rods and transmit the photos to a controller to identify defective battery carbon rods with end notches and with too long or too short length, and the controller controls the blowing nozzle (46) to blow off the defective battery carbon rods.

2. The battery carbon rod detection and sorting machine of claim 1, wherein A plurality of sorting teeth grooves for placing the battery carbon rods are uniformly formed on the synchronous toothed belt (41), and a sorting baffle (42) is further arranged parallel above the synchronous toothed belt (41), a first detection notch (421) is formed on the sorting baffle (42) at a position corresponding to the first camera (43), a second detection notch (422) is formed on the sorting baffle (42) at a position corresponding to the second camera (44), and the two ends of the battery carbon rods are sequentially exposed from the first detection notch (421) and the second detection notch (422) respectively, the first camera (43) takes photos of the ends of the battery carbon rods exposed from the first detection notch (421) to identify end defects, the second camera (44) takes photos of the ends of the battery carbon rods exposed from the second detection notch (422) to identify end defects, the third camera (45) is located above the synchronous toothed belt (41), two third detection notches (423) are formed on the sorting baffle (42), the third detection notches (423) are located directly below the third camera (45), the two ends of the battery carbon rods are exposed from the third detection notches (423), and the third camera (45) takes photos of the battery carbon rods exposed from the third detection notches (423) to identify the length of the battery carbon rods.

3. The battery carbon rod detection and sorting machine of claim 1, wherein The blowing nozzle (46) is located on the side of the synchronous toothed belt (41), the air inlet end of the blowing nozzle (46) is connected with an air compressor through an air pipe, the air outlet end of the blowing nozzle (46) faces the synchronous toothed belt (41) and can blow off the defective battery carbon rods on the synchronous toothed belt (41) through output of strong air flow, a recovery pipe (47) is further arranged on the side of the synchronous toothed belt (41), the recovery pipe (47) is arranged opposite to the blowing nozzle (46), a recovery frame (48) is arranged below the recovery pipe (47), and the defective battery carbon rods blown off by the blowing nozzle (46) fall into the recovery frame (48) through the recovery pipe (47).

4. The battery carbon rod detection and sorting machine of claim 1, wherein It also includes a feeding transmission mechanism (1), a first sorting mechanism (2), a transfer mechanism (3), and the battery carbon rod is sequentially located on the synchronous toothed belt (41) after passing through the feeding transmission mechanism (1), the first sorting mechanism (2) and the transfer mechanism (3).

5. The battery carbon rod detection and sorting machine of claim 4, wherein The feeding transmission mechanism (1) includes a feeding conveyor belt (11) and a feeding motor, the feeding motor drives the feeding conveyor belt (11) to move, a plurality of battery carbon rods are placed on the feeding conveyor belt (11), a pressing baffle (12) is further provided parallel above the feeding conveyor belt (11), and the longitudinal space between the pressing baffle (12) and the feeding conveyor belt (11) allows the battery carbon rods placed on the feeding conveyor belt (11) to pass through.

6. The battery carbon rod detection and sorting machine of claim 5, wherein The first sorting mechanism (2) includes a sorting block (21) connected with the feeding conveyor belt (11), a sorting falling hole (22) is formed in the middle of the sorting block (21), a sorting baffle (23) is arranged above the sorting block (21), the sorting baffle (23) extends above the feeding conveyor belt (11), the battery carbon rods on the feeding conveyor belt (11) move to the sorting block (21) and are extruded to move forward by the subsequent battery carbon rods, when the middle part of the battery carbon rod breaks, the battery carbon rod falls in the sorting falling hole (22); the unbroken battery carbon rod continues to move forward to the transfer mechanism (3) under the extrusion of the subsequent battery carbon rod.

7. The battery carbon rod detection and sorting machine of claim 4, wherein The transfer mechanism (3) includes a single-track curved and straight linear flow tank (31), a brush wheel (32) and a guide wheel (33), the inlet of the single-track curved and straight linear flow tank (31) is communicated with the tail of the first sorting mechanism (2), the single-track curved and straight linear flow tank (31) includes a curved flow tank and a vertical straight linear flow tank in communication, the curved flow tank is located above the straight linear flow tank, the single-track curved and straight linear flow tank (31) is used for arranging the vertically placed battery carbon rods, the brush wheel (32) is driven to rotate by a brush wheel motor (34), the side surface of the single-track curved and straight linear flow tank (31) is provided with an opening for the brush wheel (32) to pass through, the brush wheel (32) enters the opening and contacts the battery carbon rod, the brush wheel (32) rotates to assist driving the battery carbon rod in the single-track curved and straight linear flow tank (31) to move downward, the guide wheel (33) is provided with a plurality of guide wheel tooth grooves evenly distributed in a circle and matched with one battery carbon rod, the guide wheel (33) is driven to rotate by a guide wheel motor, the battery carbon rod on the first sorting mechanism (2) moves to the single-track curved and straight linear flow tank (31), the falling battery carbon rod in the single-track curved and straight linear flow tank (31) enters the guide wheel tooth groove on the guide wheel (33), and the guide wheel (33) drives the battery carbon rod to rotate to the second sorting mechanism (4).