Positive and negative collector plate appearance detection machine

Abstract

The invention discloses a positive and negative collector plate appearance detection machine, and relates to the technical field of positive and negative collector plate appearance detection, the positive and negative collector plate appearance detection machine comprises a rack, one side of the rack is provided with a feeding mechanism; the detection mechanism is installed in the middle of the rack and used for appearance detection of the front face and the back face of the collector plate. The discharging mechanism is installed at the discharging end of the detection mechanism. The feeding mechanism and the discharging mechanism are used for feeding and discharging of the flow collecting disc on the detection mechanism correspondingly. And a servo motor is mounted on the marking mechanism. Through the arrangement mode that the feeding mechanism, the detection mechanism and the discharging mechanism are matched, the third CCD detection camera can detect the reverse side of the current collecting disc through the transparent rotating disc, the first CCD detection camera and the second CCD detection camera can detect the front side and the size of the current collecting disc, the appearance detection efficiency of the current collecting disc is improved, and the appearance of the current collecting disc is detected through the discharging mechanism. And defective products and qualified products of the collector plates can be conveniently discharged separately, so that the collector plate products are convenient to discharge.

Description

Technical Field

[0001] The present invention relates to the technical field of appearance inspection of positive and negative current collecting plates, and in particular to a positive and negative current collecting plate appearance inspection machine. Background Art

[0002] A collector disk is an electronic component that is usually used to connect multiple devices in a circuit. Its basic structure consists of a flat metal disk and some contacts. The contacts are usually small pillars raised on the disk that can be connected to the pins of other components. The surface of the existing positive collector disk is a smooth disk with a slightly raised structure in the middle, while the surface of the negative collector disk is a fan-shaped groove, with an open hole in the middle and a raised structure on the sides. After the positive and negative collector disks are produced, the appearance of the collector disks needs to be inspected.

[0003] Currently, the collector plate is inspected by an optical inspection machine, but the existing optical inspection machine is in a single-sided inspection state. If the front and back sides of the collector plate need to be inspected, the collector plate needs to be turned over by a flipping mechanism before inspection, which affects the appearance inspection efficiency of the collector plate. With the development of the modern battery industry, the efficiency of the appearance inspection of the collector plate still needs to be further improved. Summary of the invention

[0004] The object of the present invention is to provide a positive and negative current collecting plate appearance inspection machine to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a positive and negative collector plate appearance inspection machine, comprising:

[0006] A frame, one side of which is provided with a feeding mechanism;

[0007] Also includes,

[0008] A detection mechanism, which is installed in the middle of the frame and is used for appearance detection of the front and back sides of the collecting plate;

[0009] A material discharge mechanism, which is installed at the discharge end of the detection mechanism, and is used to separate defective and qualified products from the current collecting plate, and the loading and unloading mechanisms are used to load and unload the current collecting plate on the detection mechanism respectively;

[0010] A marking mechanism is used for marking defective collector plates and for sorting and unloading positive and negative collector plates. A servo motor is installed on the marking mechanism.

[0011] Preferably, the feeding mechanism comprises:

[0012] A feeding belt, wherein the feeding belt is fixed to one side of the frame;

[0013] A feeding robot, which is fixed to one side of the feeding belt and is used to transfer the collecting tray in the material tray to the feeding belt;

[0014] A 3D camera is installed on one side of the feeding belt, and is used for 3D detection of the flatness of the collecting plate on the feeding belt.

[0015] Preferably, the detection mechanism comprises:

[0016] A transparent turntable, which is rotated in the middle of the frame through a driving shaft;

[0017] A fan-shaped plate, wherein the fan-shaped plate is installed on the surface of the transparent turntable;

[0018] A first CCD detection camera and a second CCD detection camera, wherein the first CCD detection camera and the second CCD detection camera are adjacently installed on one side of the transparent turntable, and the first CCD detection camera and the second CCD detection camera are used for front detection and size detection of the current collecting plate, respectively;

[0019] The third CCD detection camera is installed at the bottom of the transparent turntable and is used for detecting the back side of the current collecting plate.

[0020] Preferably, the unloading mechanism comprises:

[0021] A conveyor belt, wherein the conveyor belt is installed on one side of the transparent turntable, and the marking mechanism is installed on one end of the conveyor belt;

[0022] Transition belt, which is installed vertically on one side of the conveyor belt;

[0023] A PPU unloading robot, which is mounted on the top of the conveyor belt and is used to transfer the collecting plate on the conveyor belt to the transition belt;

[0024] The grabbing robot is installed just above the transition belt.

[0025] Preferably, the marking mechanism comprises:

[0026] A protective shell, wherein the protective shell is fixed to one side of the frame by bolts;

[0027] A connecting component, wherein the connecting component is installed in the inner cavity of the protective shell;

[0028] A rotating rod, both ends of which are rotatably connected to both sides of the protective shell through bearings, and the rotating rod is drivingly connected to the output end of the servo motor;

[0029] A synchronization component, wherein the synchronization component is installed between the rotating rod and the connecting component;

[0030] A bearing assembly, the bearing assembly is arranged below the connecting assembly and is mounted on the end of the conveying belt;

[0031] A material distribution component, the material distribution component is installed at one end of the connecting component;

[0032] A marking component is installed on a side opposite to the bearing component and the connecting component.

[0033] Preferably, the connection assembly comprises:

[0034] A positioning plate, the positioning plate is fixed to the inner wall of the protective shell, and the marking component is inserted into the bottom of the positioning plate;

[0035] A positioning shaft, the positioning shaft is rotatably inserted into the bottom of the positioning plate;

[0036] A rubber roller, the rubber roller is fixedly inserted in the middle of the positioning shaft, and the rubber roller is rotatably inserted and connected with the bottom of the positioning plate;

[0037] A push switch is fixed to the top of the inner wall of the positioning plate.

[0038] Preferably, the bearing assembly comprises:

[0039] A carrying plate, wherein the carrying plate is fixed to the inner wall of the protective shell in an inclined surface, and the marking component is inserted in the middle of the carrying plate;

[0040] The rollers are rolled and inserted on the top of the bearing plate.

[0041] Preferably, the material distribution component comprises:

[0042] A fixing frame, the fixing frame being fixed to one end of the positioning plate;

[0043] A motor-driven rotating shaft, wherein the motor-driven rotating shaft is rotatably inserted into the bottom of the fixed frame through a bearing;

[0044] A material dividing plate is fixedly inserted into the middle of the rotating shaft.

[0045] Preferably, the marking assembly comprises:

[0046] A movable plate, one of which is attached to the pressing end of the push switch;

[0047] A marking pen, the marking pen is slidably connected with the middle of the carrying plate and the bottom of the positioning plate respectively;

[0048] A spherical pen tip, wherein the spherical pen tip is fixed to one end of the marking pen;

[0049] A fixing sleeve, wherein the fixing sleeve is respectively connected with the middle of the bearing plate and the bottom of the positioning plate in a sliding manner;

[0050] A compression spring is fixed to the back ends of the bearing plate and the positioning plate.

[0051] Preferably, the compression spring is sleeved on the outer wall of the marking pen, the marking pen is fixedly connected to the middle part of the movable plate, and one end of the compression spring is fixed to the outer wall of the movable plate.

[0052] Technical effects and advantages of the present invention:

[0053] (1) The present invention adopts a setting mode in which a loading mechanism, a detection mechanism and a unloading mechanism are coordinated, so that the collecting disk in the material tray can be transferred to the detection mechanism through the loading mechanism for detection, and the detection mechanism includes: a transparent turntable, a material separation plate, a first CCD detection camera, a second CCD detection camera and a third CCD detection camera, so that the third CCD detection camera can detect the back of the collecting disk through the transparent turntable, while the first CCD detection camera and the second CCD detection camera can detect the front and size of the collecting disk, thereby improving the efficiency of the appearance detection of the collecting disk. Through the unloading mechanism, it is convenient to separate and unload the defective and qualified collecting disks, so that the unloading of the collecting disk products is convenient;

[0054] (2) The present invention adopts a setting mode in which a material unloading mechanism and a marking mechanism are matched, and the marking mechanism includes a protective shell, a connecting component, a rotating rod, a synchronization component, a bearing component, a material distribution component and a marking component. By using the connecting component and the bearing component, the collecting plate can stably pass between the two marking components, so that the marking component can mark the front and back sides of the collecting plate, so that defective products can be marked, and the probability of defective products being mixed with qualified products is reduced;

[0055] (3) The present invention adopts a configuration in which a connecting component, a rotating rod, a synchronization component, a bearing component and a material dividing component are coordinated, and utilizes a synchronization component and a servo motor so that the rubber roller on the connecting component can push the collecting plate, thereby facilitating the passage of the collecting plate between the connecting component and the bearing component. At the same time, when the protrusion of the negative collecting plate moves to the marking component, one of the marking components drives the push-type switch so that the material dividing component can separate the positive collecting plate and the negative collecting plate for unloading, thereby facilitating the classification and collection of defective positive collecting plates and negative collecting plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0057] Figure 2 It is a schematic diagram of the overall top structure of the present invention.

[0058] Figure 3It is a schematic diagram of the overall structure of the conveyor belt of the present invention.

[0059] Figure 4 It is a schematic diagram of the overall structure of the transparent turntable of the present invention.

[0060] Figure 5 It is a schematic diagram of the side sectional structure of the protective shell of the present invention.

[0061] Figure 6 For the present invention Figure 5 Schematic diagram of the local enlarged structure at point A in the middle.

[0062] Figure 7 It is a schematic diagram of the overall structure of the positioning plate of the present invention.

[0063] In the figure: 1, frame; 2, feeding mechanism; 21, feeding belt; 22, feeding manipulator; 23, 3D camera; 3, detection mechanism; 31, transparent turntable; 32, fan-shaped plate; 33, first CCD detection camera; 34, second CCD detection camera; 35, third CCD detection camera; 4, unloading mechanism; 41, conveyor belt; 42, transition belt; 43, PPU unloading manipulator; 44, grabbing manipulator; 5, marking mechanism; 51, protective shell; 52, connecting Connecting assembly; 521, positioning plate; 522, positioning shaft; 523, rubber roller; 524, push switch; 53, rotating rod; 54, synchronization assembly; 55, bearing assembly; 551, bearing plate; 552, roller; 56, material dividing assembly; 561, fixing frame; 562, rotating shaft; 563, material dividing plate; 57, marking assembly; 571, movable plate; 572, marking pen; 573, spherical pen head; 574, fixing sleeve; 575, compression spring; 6, servo motor. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] The present invention provides Figure 1-7 A positive and negative current collecting plate appearance inspection machine shown includes:

[0066] A frame 1, a feeding mechanism 2 is installed on one side of the frame 1, and also includes a detection mechanism 3, a discharge mechanism 4 and a marking mechanism 5. The frame 1 is used to carry the feeding mechanism 2, the detection mechanism 3, the discharge mechanism 4 and the marking mechanism 5. The detection mechanism 3 is installed in the middle of the frame 1. The detection mechanism 3 is used for the appearance detection of the front and back sides of the collecting plate. The discharge mechanism 4 is installed at the discharge end of the detection mechanism 3. The discharge mechanism 4 is used to separate the defective and qualified collecting plates. The feeding mechanism 2 and the discharge mechanism 4 are used for loading and unloading the collecting plates on the detection mechanism 3 respectively. The marking mechanism 5 is used for marking defective collecting plates and classifying and unloading positive and negative collecting plates. A servo motor 6 is installed on the marking mechanism 5, and the servo motor 6 is electrically connected to an external power supply through an external switch;

[0067] Furthermore, the feeding mechanism 2 includes: a feeding belt 21, a feeding robot 22 and a 3D camera 23. The feeding belt 21 is fixed to one side of the frame 1. The bottoms of the feeding robot 22 and the 3D camera 23 are fixed to the top of the frame 1. The feeding robot 22 is fixed to one side of the feeding belt 21. The feeding robot 22 is used to transfer the collecting plate in the material tray to the feeding belt 21, so that the feeding of the collecting plate is convenient through the feeding belt 21. The 3D camera 23 is installed on one side of the feeding belt 21. The 3D camera 23 is used for 3D detection of the flatness of the collecting plate on the feeding belt 21.

[0068] Specifically, the detection mechanism 3 includes: a transparent turntable 31, a fan-shaped plate 32, a first CCD detection camera 33, a second CCD detection camera 34 and a third CCD detection camera 35. The transparent turntable 31 is rotated in the middle of the frame 1 by driving the rotating shaft, so that the transparent turntable 31 can stably rotate on the frame 1. The fan-shaped plate 32 is installed on the surface of the transparent turntable 31. The fan-shaped plate 32 can push the collecting plate on the transparent turntable 31 to the outer position, so that the first CCD detection camera 33, the second CCD detection camera 34 and the third CCD detection camera 35 can detect the current of the first turntable 31. For the detection of the current collecting plate, the first CCD detection camera 33 and the second CCD detection camera 34 are adjacently installed on one side of the transparent turntable 31, and the first CCD detection camera 33 and the second CCD detection camera 34 are respectively used for the front detection and size detection of the current collecting plate, and the third CCD detection camera 35 is installed at the bottom of the transparent turntable 31, and the third CCD detection camera 35 is used for the back detection of the current collecting plate. Through the transparent material of the transparent turntable 31, the back of the current collecting plate located on the transparent turntable 31 can be detected by the third CCD detection camera 35.

[0069] Furthermore, the unloading mechanism 4 includes: a conveyor belt 41, a transition belt 42, a PPU unloading manipulator 43 and a grabbing manipulator 44. The bottoms of the conveyor belt 41, the transition belt 42, the PPU unloading manipulator 43 and the grabbing manipulator 44 are all fixed to the top of the frame 1. The conveyor belt 41 is installed on one side of the transparent turntable 31. The conveyor belt 41 and the loading belt 21 are respectively located on both sides of the transparent turntable 31, which is convenient for the feeding and unloading of the collecting disk on the transparent turntable 31. A plurality of transition belts 42 are arranged on one side of the conveyor belt 41, which is convenient for feeding and unloading the collecting disk on the transition belt 42. The conveyor belt 41 is used to carry out diversion so that qualified products can be transferred to the transition belt 42, and defective products flow out through the conveyor belt 41. The transition belt 42 is installed on one side of the conveyor belt 41 in a vertical direction. The PPU unloading robot 43 is mounted on the top of the conveyor belt 41. The PPU unloading robot 43 is used to transfer the collecting plate on the conveyor belt 41 to the transition belt 42. The grabbing robot 44 is installed directly above the transition belt 42. The PPU unloading robot 43 and the grabbing robot 44 are both existing structures that can grab the qualified product collecting plate, so that the qualified product collecting plate can be stably loaded and transported out.

[0070] Furthermore, the marking mechanism 5 is installed at one end of the conveyor belt 41, and the marking mechanism 5 includes: a protective shell 51, a connecting component 52, a rotating rod 53, two synchronous components 54, a bearing component 55, a material distribution component 56 and a marking component 57. The protective shell 51 is fixed to one side of the frame 1 by bolts, and the connecting component 52 is installed in the inner cavity of the protective shell 51. The connecting component 52 is used to push the collecting plate to discharge, and the two ends of the rotating rod 53 are respectively rotatably connected with the two sides of the protective shell 51 through bearings. The rotating rod 53 is connected to the output end of the servo motor 6 by transmission, and the synchronous component 54 is installed between the rotating rod 53 and the connecting component 52. The bearing component 55 is arranged below the connecting component 52, and the bearing component 55 is installed at the end of the conveyor belt 41. The material distribution component 56 is installed at one end of the connecting component 52, and the marking component 57 is installed on the opposite side of the bearing component 55 and the connecting component 52. The marking component 57 can mark the outer wall of the collecting plate to prevent the mixing of defective products and qualified products.

[0071] The connecting assembly 52 includes: a positioning plate 521, two positioning shafts 522, two rubber rollers 523 and a push-type switch 524. The positioning plate 521 is fixed to the inner wall of the protective shell 51. The outer wall of one end of the positioning plate 521 is in an arc-shaped structure, so that the current collecting plate can stably enter the bottom of the positioning plate 521. The positioning shaft 522 rotates and inserts into the bottom of the positioning plate 521. The rubber roller 523 is fixed and inserted into the middle of the positioning shaft 522. The rubber roller 523 is rotatably inserted and connected with the bottom of the positioning plate 521. The rubber roller 523 is made of rubber material. The rubber roller 523 will not cause extrusion and wear on the outer wall of the current collecting plate, and the bottom of the rubber roller 523 The bottom of the protruding positioning plate 521 is convenient for the rubber roller 523 to push the collecting plate, the push switch 524 is fixed to the top of the inner wall of the positioning plate 521, the synchronous component 54 is fixed between the positioning shaft 522 and the rotating rod 53, the synchronous component 54 includes two synchronous wheels and a synchronous belt, the synchronous belt is arranged between the two synchronous wheels, two of which are fixed to one end of the rotating rod 53, and the other two synchronous wheels are respectively fixed to one end of the two positioning shafts 522. The servo motor 6 drives the rotating rod 53 to rotate stably, so that the synchronous component 54 can drive the two rubber rollers 523 to rotate synchronously, which is convenient for the stable unloading of the collecting plate;

[0072] In particular, the bearing assembly 55 includes: a bearing plate 551 and a roller 552, the bearing plate 551 is arranged below the positioning plate 521, and the bearing plate 551 is arranged at the extension line of the inclined surface of the conveying belt 41, so that the collecting plate can be transferred from the conveying belt 41 to the bearing plate 551, the bearing plate 551 is fixed to the inner wall of the protective shell 51 in an inclined surface, and the roller 552 rolls and penetrates the top of the bearing plate 551, and the outer wall of the roller 552 is made of rubber material, so that when the collecting plate moves on the roller 552, it can prevent the outer wall of the collecting plate from being worn;

[0073] In particular, the material dividing assembly 56 includes: a fixed frame 561, a rotating shaft 562 with a motor and a material dividing plate 563. The fixed frame 561 is fixed to one end of the positioning plate 521. The rotating shaft 562 with a motor rotates and is inserted into the bottom of the fixed frame 561 through a bearing. The material dividing plate 563 is fixed and inserted into the middle of the rotating shaft 562. One end of the rotating shaft 562 is connected to the motor. The motor is fixed to the outer wall of the fixed frame 561. The push-type switch 524 is electrically connected to the motor. Through the drive of the motor, the rotating shaft 562 can rotate stably, so that the material dividing plate 563 can rotate at the bottom of the fixed frame 561, so that the material dividing plate 563 can adjust its angle, so that the positive collecting plate and the negative collecting plate can be distinguished and unloaded.

[0074] Among them, the marking component 57 is inserted in the middle of the carrying plate 551, and the marking component 57 is inserted in the bottom of the positioning plate 521. The marking component 57 includes: a movable plate 571, a marking pen 572, a spherical pen head 573, a fixed sleeve 574 and a compression spring 575. One of the movable plates 571 is attached to the pressing end of the push switch 524, and the two marking pens 572 are respectively slidably inserted and connected with the middle of the carrying plate 551 and the bottom of the positioning plate 521. The spherical pen head 573 is fixed to one end of the marking pen 572. The spherical structure of the spherical pen head 573 is larger than the middle hole of the negative collector, which can prevent the spherical pen head 573 from being stuck in the middle of the negative collector, and the refill liquid in the marking pen 572 can pass through the spherical pen head 573 to mark defective products. Line marking, two fixed sleeves 574 are respectively slidably and interlacedly connected with the middle part of the carrying plate 551 and the bottom of the positioning plate 521, two compression springs 575 are respectively fixed to the back ends of the carrying plate 551 and the positioning plate 521, the compression spring 575 is sleeved on the outer wall of the marking pen 572, the marking pen 572 is fixedly connected to the middle part of the movable plate 571, and one end of the compression spring 575 is fixed to the outer wall of the movable plate 571. Through the elasticity of the compression spring 575, when the spherical pen head 573 contacts the protrusion on the outer wall of the negative collecting plate, the marking pen 572 drives one of the movable plates 571 to move, so that its push-type switch 524 is pressed, so that the dividing plate 563 can adjust its angle, which is convenient for the classified collection of defective products of the positive collecting plate and the negative collecting plate.

[0075] Working principle of the present invention:

[0076] When in use, the collecting disk in the material tray can be transferred to the transparent turntable 31 on the detection mechanism 3 through the loading manipulator 22 and the loading belt 21 on the loading mechanism 2 for detection, so that the third CCD detection camera 35 can detect the back of the collecting disk through the transparent turntable 31, and the first CCD detection camera 33 and the second CCD detection camera 34 can detect the front and size of the collecting disk, thereby improving the efficiency of the appearance detection of the collecting disk. Through the PPU unloading manipulator 43 on the unloading mechanism 4, it is convenient to classify and unload defective products and qualified products through the conveyor belt 41 and the transition belt 42, so as to separate and unload the defective and qualified products of the collecting disk, and make the unloading of the collecting disk products convenient;

[0077] By utilizing the synchronization component 54 and the servo motor 6, the rubber roller 523 on the connecting component 52 can push the collecting plate, which facilitates the passage of the collecting plate between the positioning plate 521 and the supporting plate 551, and facilitates the marking component 57 to mark the front and back sides of the collecting plate, so that defective products can be marked, reducing the probability of defective products being mixed with qualified products. At the same time, when the protrusion of the negative collecting plate moves to the marking component 57, one of the movable plates 571 drives the push-type switch 524, so that the dividing plate 563 can separate the positive collecting plate and the negative collecting plate for unloading, so that the defective positive collecting plate and the negative collecting plate can be classified and collected.

[0078] 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, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to 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 positive and negative collector plate appearance inspection machine, comprising: A frame (1), a feeding mechanism (2) being installed on one side of the frame (1); It is characterized by also including: A detection mechanism (3), the detection mechanism (3) being installed in the middle of the frame (1), and the detection mechanism (3) being used for visual inspection of the front and back sides of the collecting plate; A material discharge mechanism (4), the material discharge mechanism (4) being installed at the discharge end of the detection mechanism (3), the material discharge mechanism (4) being used to separate defective products from qualified products on the current collecting plate, the material loading mechanism (2) and the material discharge mechanism (4) being used to load and discharge the current collecting plate on the detection mechanism (3) respectively; A marking mechanism (5) is used for marking defective current collecting plates and for sorting and unloading positive and negative current collecting plates. A servo motor (6) is installed on the marking mechanism (5).

2. A positive and negative current collecting plate appearance inspection machine according to claim 1, characterized in that: The feeding mechanism (2) comprises: A feeding belt (21), wherein the feeding belt (21) is fixed to one side of the frame (1); A loading robot (22), the loading robot (22) being fixed to one side of the loading belt (21), and the loading robot (22) being used to transfer the collecting plate in the material tray to the loading belt (21); A 3D camera (23), wherein the 3D camera (23) is installed on one side of the feeding belt (21), and the 3D camera (23) is used for 3D detection of the flatness of the collecting plate on the feeding belt (21).

3. The positive and negative current collecting plate appearance inspection machine according to claim 1, characterized in that: The detection mechanism (3) comprises: A transparent rotating disk (31), wherein the transparent rotating disk (31) is rotated in the middle of the frame (1) by driving a rotating shaft; A fan-shaped plate (32), wherein the fan-shaped plate (32) is mounted on the surface of the transparent rotating disk (31); A first CCD detection camera (33) and a second CCD detection camera (34), wherein the first CCD detection camera (33) and the second CCD detection camera (34) are adjacently installed on one side of the transparent turntable (31), and the first CCD detection camera (33) and the second CCD detection camera (34) are used for front detection and size detection of the current collecting disk, respectively; A third CCD detection camera (35), the third CCD detection camera (35) is installed at the bottom of the transparent turntable (31), and the third CCD detection camera (35) is used for back surface detection of the current collecting disk.

4. The positive and negative current collecting plate appearance inspection machine according to claim 3, characterized in that: The unloading mechanism (4) comprises: A conveyor belt (41), wherein the conveyor belt (41) is mounted on one side of the transparent turntable (31), and the marking mechanism (5) is mounted on one end of the conveyor belt (41); A transition belt (42), the transition belt (42) is installed on one side of the conveyor belt (41) in a vertical direction; A PPU unloading robot (43), wherein the PPU unloading robot (43) is mounted on the top of the conveyor belt (41), and the PPU unloading robot (43) is used to transfer the collecting plate on the conveyor belt (41) to the transition belt (42); A grabbing robot (44) is installed just above the transition belt (42).

5. The positive and negative current collecting plate appearance inspection machine according to claim 4, characterized in that: The marking mechanism (5) comprises: A protective shell (51), wherein the protective shell (51) is fixed to one side of the frame (1) by means of bolts; A connecting component (52), wherein the connecting component (52) is installed in the inner cavity of the protective shell (51); A rotating rod (53), the two ends of which are rotatably connected to the two sides of the protective shell (51) through bearings, and the rotating rod (53) is drivingly connected to the output end of the servo motor (6); A synchronization component (54), wherein the synchronization component (54) is installed between the rotating rod (53) and the connecting component (52); A bearing assembly (55), the bearing assembly (55) being arranged below the connecting assembly (52), and the bearing assembly (55) being mounted on an end of a conveying belt (41); A material distribution assembly (56), wherein the material distribution assembly (56) is installed at one end of the connecting assembly (52); A marking component (57) is installed on a side opposite to the bearing component (55) and the connecting component (52).

6. The positive and negative current collecting plate appearance inspection machine according to claim 5, characterized in that: The connection assembly (52) comprises: A positioning plate (521), wherein the positioning plate (521) is fixed to the inner wall of the protective shell (51), and the marking component (57) is inserted into the bottom of the positioning plate (521); A positioning shaft (522), the positioning shaft (522) is rotatably inserted into the bottom of the positioning plate (521); A rubber roller (523), the rubber roller (523) is fixedly inserted into the middle of the positioning shaft (522), and the rubber roller (523) is rotatably inserted into the bottom of the positioning plate (521); A push switch (524), wherein the push switch (524) is fixed to the top of the inner wall of the positioning plate (521).

7. The positive and negative current collecting plate appearance inspection machine according to claim 6, characterized in that: The bearing assembly (55) comprises: A carrying plate (551), the carrying plate (551) being fixed to the inner wall of the protective shell (51) in an inclined surface, and the marking component (57) being inserted into the middle of the carrying plate (551); The roller (552) rolls and penetrates the top of the supporting plate (551).

8. The positive and negative current collecting plate appearance inspection machine according to claim 6, characterized in that: The material distribution assembly (56) comprises: A fixing frame (561), wherein the fixing frame (561) is fixed to one end of the positioning plate (521); A motor-driven rotating shaft (562), wherein the motor-driven rotating shaft (562) is rotatably inserted into the bottom of the fixed frame (561) via a bearing; A material dividing plate (563), wherein the material dividing plate (563) is fixedly inserted into the middle portion of the rotating shaft (562).

9. The positive and negative current collecting plate appearance inspection machine according to claim 7, characterized in that: The marking assembly (57) comprises: A movable plate (571), wherein one of the movable plates (571) is attached to a pressing end of a pressing switch (524); A marking pen (572), wherein the marking pen (572) is respectively connected to the middle of the carrying plate (551) and the bottom of the positioning plate (521) in a sliding manner; A spherical pen tip (573), wherein the spherical pen tip (573) is fixed to one end of the marking pen (572); A fixing sleeve (574), wherein the fixing sleeve (574) is respectively connected to the middle of the bearing plate (551) and the bottom of the positioning plate (521) in a sliding manner; A compression spring (575) is fixed to the back ends of the bearing plate (551) and the positioning plate (521).

10. The positive and negative current collecting plate appearance inspection machine according to claim 9, characterized in that: The compression spring (575) is sleeved on the outer wall of the marking pen (572), the marking pen (572) is fixedly connected to the middle part of the movable plate (571), and one end of the compression spring (575) is fixed to the outer wall of the movable plate (571).

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