A feeding detection device and a winding machine

Abstract

The present application relates to a feeding detection device and a winding machine, and relates to the technical field of lithium battery production. The feeding detection device includes a frame body, a material taking structure, an ejecting structure, and an image detection module. A pair of substrates are fixedly arranged on the frame body at an upper and lower interval; a pair of material taking structures are both slidably connected to the frame body and are respectively located above the two substrates in one-to-one correspondence. Each material taking structure reciprocates along the length direction of the corresponding substrate; the image detection module includes a controller and a pair of cameras arranged on the frame body and respectively located above the pair of substrates. The cameras are connected to the controller and are used to obtain the shooting information of the material to be tested and transmit it to the controller; a pair of ejecting structures are respectively located behind the cameras along the direction of the pole piece transportation and are slidably arranged along the width direction of the corresponding substrate; wherein, the controller is connected to the ejecting structure. When the controller determines that the pole piece corresponding to the shooting information has defects, it controls the ejecting mechanism to eject the corresponding pole piece. The present application can ensure the quality of the battery cells.

Description

Technical Field

[0001] This application relates to the technical field of lithium battery production, and particularly to a feeding detection device and a winding machine. Background Art

[0002] A lithium battery winding machine is a key device in the lithium battery manufacturing process, mainly used for winding electrode sheets (including positive electrode sheets and negative electrode sheets) and diaphragms into battery cores according to a certain sequence and tension. This device has a direct impact on the performance and safety of lithium batteries.

[0003] A lithium battery winding machine includes a material taking device and a winding device. Among them, the material taking device transports the positive electrode sheet and the negative electrode sheet to the winding device, and they are wound together with the diaphragm by the winding device to form a battery core. In the actual production process, some electrode sheets have defects such as breakage and wrinkles, which affect the quality of the battery core. Summary of the Invention

[0004] The purpose of this application is to provide a feeding detection device and a winding machine, which can reject defective positive electrode sheets and ensure the quality of the produced battery cores.

[0005] In a first aspect, a feeding detection device provided by this application adopts the following technical solution:

[0006] A feeding detection device includes:

[0007] A frame body, on which two substrates for supporting the positive electrode sheet and the negative electrode sheet are fixedly provided, and a pair of the substrates are arranged at intervals up and down;

[0008] A pair of material taking structures, both of the pair of material taking structures are slidably connected to the frame body, and are respectively located above the two substrates in one-to-one correspondence, and each material taking structure reciprocates along the length direction of the corresponding substrate;

[0009] An image detection module, including a controller, and a pair of cameras arranged on the frame body and respectively located above the pair of substrates, the cameras are connected to the controller, and are used for obtaining the shooting information of the material to be tested and transmitting it to the controller;

[0010] A pair of ejecting structures, which are respectively located behind the cameras along the electrode sheet conveying direction and are slidably arranged along the width direction of the corresponding substrate;

[0011] Among them, the controller is connected to the ejecting structure, and when the controller determines that the electrode sheet corresponding to the shooting information has a defect, it controls the ejecting mechanism to eject the corresponding electrode sheet.

[0012] Furthermore, it also includes a positioning component for positioning the camera, the positioning component includes a slide rail and a slider, the slide rail is fixed on the frame, one end of the slider is slidably connected to the slide rail, and the other end of the slider is detachably connected to the camera.

[0013] Furthermore, a movable groove is provided on the substrate for storing spare pole pieces;

[0014] A feeding structure is provided in the movable tank, and the feeding structure comprises:

[0015] A cover plate, rotatably connected to the base plate and flush with the upper side of the base plate, the cover plate being used to open or close the movable slot;

[0016] A bottom plate, slidably connected in the movable groove and having a sliding stroke along the width direction of the base plate;

[0017] The lifting member is fixed in the movable groove and plugged with the bottom plate to push the pole piece out of the movable groove.

[0018] Furthermore, two groups of positive plates or negative plates are arranged on the frame, and the material taking structure includes:

[0019] A splint, the length of which is adjustable;

[0020] A material taking driving member, connected to the clamping plate, and used to drive the clamping plate to move;

[0021] When the controller determines that the pole piece corresponding to the photographed information has defects, the controller controls the clamping plate to extend so as to synchronously clamp the two groups of pole pieces.

[0022] Furthermore, it also includes a material feeding drive, and the material feeding drive is drivingly connected to the cover plate;

[0023] A gear is arranged on the output shaft of the feeding driving member, and a tooth groove is provided on the side wall of the bottom plate, and the bottom plate is meshed with the gear through the tooth groove.

[0024] Furthermore, a limit plate is vertically extended upward on one side of the cover plate away from the frame body, and the clamping plate includes:

[0025] Fixed plate;

[0026] An upper clamping plate connected to one end of the fixing plate;

[0027] The lower clamping plate comprises a first connecting plate and a second connecting plate, wherein one end of the first connecting plate is connected to the fixing plate, and the other end of the first connecting plate is twisted with the second connecting plate.

[0028] Further, it further includes a loading rack, which is installed on the substrate and used for storing the pole pieces. A baffle is connected to one side of the loading rack close to the material taking structure. The baffle is in clearance fit with the bottom wall of the loading rack to form a first notch for the material taking structure to clamp the pole pieces.

[0029] Further, a second notch is formed in the bottom wall of the loading rack, and a roller is rotatably connected in the second notch.

[0030] Further, the ejecting structure includes:

[0031] A push plate;

[0032] An ejecting driving member for pushing the push plate to move;

[0033] A sliding groove is formed in the substrate along its own width direction, and at least a part of the push plate extends into the sliding groove.

[0034] In a second aspect, a loading detection device provided by the present application adopts the following technical solution:

[0035] A winding machine includes a coiling device, an appearance detection module, and the above-mentioned loading detection device. The loading detection device is arranged on one side of the coiling device, and the appearance detection module is arranged on the other side of the coiling device for detecting the appearance of the product.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. An image detection module is provided in the present application. The image detection module is connected to the ejecting structure and the replenishing structure. When the image detection module scans a defective pole piece, the ejecting mechanism will eject the defective pole piece, and the replenishing structure will promptly eject the spare pole piece to replace the defective pole piece, thereby ensuring the quality of the battery cell.

[0038] 2. The image detection module in the present application is connected to the telescopic material taking structure. When the image detection module scans a defective pole piece, the material taking structure extends to simultaneously clamp two pole pieces next time and promptly replenish the material in the accommodating groove.

[0039] 3. A limiting plate extends vertically upward on the side of the cover plate facing away from the frame body. When the cover plate closes the movable groove, the limiting plate can limit the movement of the pole piece and reduce the possibility of the pole piece shifting; when the cover plate rotates and the movable groove is in an open state, at this time the clamping structure clamps two pole pieces simultaneously, and the limiting plate can intercept the pole piece relatively far from the frame body to make the pole piece fall onto the bottom plate. Description of the Drawings

[0040] Figure 1It is a schematic three-dimensional structure diagram of the feeding detection device in this application;

[0041] Figure 2 It is Figure 1 a partial enlarged schematic diagram of part A in

[0042] Figure 3 It is Figure 1 a partial enlarged schematic diagram of part B in

[0043] Figure 4 a schematic cross-sectional structure diagram of the feeding detection device in this application;

[0044] Figure 5 It is Figure 4 a partial enlarged schematic diagram of part C in

[0045] In the figure, 1 is the frame body; 2 is the substrate; 21 is the movable groove; 3 is the material taking structure; 31 is the clamping plate; 311 is the fixing plate; 312 is the upper clamping plate; 313 is the lower clamping plate; 3131 is the first connecting plate; 3132 is the second connecting plate; 32 is the material taking driving part; 4 is the ejecting structure; 41 is the push plate; 42 is the ejecting driving part; 5 is the image detection module; 6 is the positioning component; 61 is the slide rail; 62 is the slider; 7 is the replenishing material structure; 71 is the cover plate; 72 is the bottom plate; 721 is the tooth groove; 73 is the lifting part; 74 is the replenishing material driving part; 75 is the gear; 8 is the feeding rack; 81 is the first notch; 82 is the second notch; 9 is the baffle; 10 is the roller; 20 is the limiting plate. Detailed implementation manners

[0046] Next, the technical solutions of this application will be clearly and completely described in conjunction with the attached Figures 1-5 The following embodiments are exemplary and are only used to explain this application, and cannot be construed as a limitation to this application. In the following description, the same reference numerals are used to represent the same or equivalent elements, and repeated descriptions are omitted.

[0047] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when this application product is commonly placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to this application.

[0048] In addition, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] It should be further understood that the term "and / or" used in the specification and the corresponding claims of this application refers to any combination of one or more of the listed items and all possible combinations.

[0050] A winding machine, referring to Figure 1 , includes a coil material device, an appearance detection module, and the above-mentioned feeding detection device. The feeding detection device is arranged on one side of the coil material device, and the appearance detection module is arranged on the other side of the coil material device. When producing the battery cells, the positive electrode sheets, negative electrode sheets, and separators are fed at the feeding detection device, transported to the coil material device, wound into columnar battery cells, and then transported to the next position.

[0051] In a specific embodiment, there are two conveyor belts (main conveyor belt and auxiliary conveyor belt) on the side of the coil material device facing away from the feeding detection device. Among them, a screening robot arm is arranged on the main conveyor belt, and the appearance detection module is arranged on the main conveyor belt and is wirelessly connected to the screening robot arm.

[0052] The appearance detection module scans the appearance of the battery cells. When it is found that there are damages on the surface of the battery cells, the appearance detection module will emit a control signal to make the screening robot arm push the defective battery cells onto the auxiliary conveyor belt, thereby ensuring the yield of the products.

[0053] Further, referring to Figure 1 and Figure 2 , the feeding detection device includes a frame 1 and a material taking structure 3. On the frame 1, two substrates 2 for supporting the positive electrode sheets and negative electrode sheets are fixedly provided; a pair of substrates 2 are arranged at intervals up and down, and a pair of material taking structures 3 are slidably connected to the frame 1 and are respectively located above the two substrates 2, and each material taking structure 3 reciprocates along the length direction of the corresponding substrate 2.

[0054] When producing the battery cells, the positive electrode sheets are placed on one substrate 2, and the negative electrode sheets are placed on the other substrate 2. After the positive electrode sheets and negative electrode sheets are clamped by the material taking structures 3 on the corresponding substrates 2, they are dragged.

[0055] Further, there are also two feeding disks rotatably arranged on the feeding detection device, and diaphragms are wound around both of the two feeding disks. When the positive electrode sheet and the negative electrode sheet are dragged, the diaphragms unwind synchronously. The diaphragms are used to separate the positive electrode sheet and the negative electrode sheet, that is, the battery cell is wound from four layers of materials: one layer of positive electrode sheet, one layer of diaphragm, one layer of negative electrode sheet, and one layer of diaphragm.

[0056] Further, an image detection module 5 and a pair of ejecting structures 4 are correspondingly arranged for each substrate 2. Among them, the image detection module 5 includes a controller, and a pair of cameras arranged on the frame body 1 and located above a pair of substrates 2 respectively. The cameras are connected to the controller and are used to obtain the shooting information of the material to be detected and transmit it to the controller;

[0057] A pair of ejecting structures are correspondingly located behind the cameras along the conveying direction of the electrode sheet, and are slidably arranged along the width direction of the corresponding substrate; the controller is connected to the ejecting structure 4. When the controller determines that the electrode sheet corresponding to the shooting information has defects (such as wrinkling or breakage), it controls the ejecting mechanism to eject the corresponding electrode sheet.

[0058] It should be noted that in this embodiment, the front end / rear end is related to the moving stroke of the electrode sheet. Specifically, the electrode sheet is first photographed by the camera, and then passes through the ejecting structure 4, that is, the camera is closer to the feeding point of the electrode sheet than the ejecting structure 4 in the length direction of the substrate 2.

[0059] Refer to Figure 2 , and a positioning component 6 for positioning the camera is further included. The positioning component 6 includes a slide rail 61 and a slider 62. The slide rail 61 is fixedly arranged on the frame body 1. One end of the slider 62 is slidably connected to the slide rail 61, and the other end of the slider 62 is detachably connected to the camera.

[0060] Refer to Figure 1 and Figure 3 , the ejecting structure 4 has a reciprocating sliding stroke along the width direction of the substrate 2. Specifically, the ejecting structure 4 includes a push plate 41 and an ejecting driving part 42. The ejecting driving part 42 can be specifically set according to actual situations. In a specific embodiment, the ejecting driving part 42 can be set as a linear cylinder. In another specific embodiment, the ejecting driving part 42 can also be set as an electric push rod, as long as it can ensure that the push plate 41 can push the defective electrode sheet off the substrate 2.

[0061] Further, in a specific embodiment, a chute is opened on the substrate 2 along its own width direction, and at least a part of the push plate 41 extends into the chute. By making a part of the push plate 41 extend into the chute, when the push plate 41 pushes the electrode sheet located on the substrate 2, it can stably contact the electrode sheet, thereby reducing the occurrence of the situation of pushing empty.

[0062] Furthermore, since the battery cell includes a positive electrode sheet and a negative electrode sheet, when any one of the electrode sheets on the substrate 2 is damaged, the battery cell cannot be produced due to the lack of materials. At this time, the feeding detection device needs to stop and replenish an electrode sheet again to ensure the smooth operation of the feeding detection device.

[0063] Therefore, in the present application, a movable groove 21 is formed on the substrate 2 for storing spare electrode sheets. Correspondingly, a feeding structure 7 is arranged in the movable groove 21.

[0064] The feeding structure 7 can eject the spare electrode sheet from the movable groove 21 for timely feeding. By setting the feeding structure 7, the winding machine does not need to stop when detecting that the electrode sheet is damaged, and can ensure the continuous operation of the winding machine.

[0065] Specifically, referring to Figure 3 and Figure 4 , the feeding structure 7 includes a cover plate 71, a bottom plate 72 and a lifting member 73. The cover plate 71 is rotatably connected to the substrate 2 and is flush with the upper side of the substrate 2. The cover plate 71 is used to open or close the movable groove 21; the bottom plate 72 is slidably connected in the movable groove 21 and has a stroke of sliding along the width direction of the substrate 2; the lifting member 73 is fixedly arranged in the movable groove 21 and is inserted and matched with the bottom plate 72 for ejecting the electrode sheet from the movable groove 21.

[0066] The feeding action of the feeding structure 7 is as follows:

[0067] The cover plate 71 rotates to open the movable groove 21. At this time, the lifting member 73 moves vertically upward to push the electrode sheet located on the lifting member 73. When the battery cell winding is completed, the lifting member 73 retracts, and the cover plate 71 resets to re-close the movable groove 21 to ensure that when the material taking structure 3 pulls the electrode sheet, the electrode sheet will not fall into the movable groove 21.

[0068] In a specific embodiment, several electrode sheets can be directly stored in the movable groove 21, and the lifting member 73 ejects the several electrode sheets one by one for feeding.

[0069] However, considering the case of directly storing several electrode sheets in the movable groove 21, these electrode sheets have not been scanned by the image detection module 5, that is, the several electrode sheets stored in the movable groove 21 may also have defects.

[0070] Therefore, in another specific embodiment, two groups of electrode sheets can be arranged at one end of the substrate 2. Correspondingly, the material taking structure 3 includes a clamping plate 31 and a material taking driving member 32. The material taking driving member 32 is connected to the clamping plate 31 for driving the clamping plate 31 to move;

[0071] The length of the clamping plate 31 is adjustable (electrically retractable). When the camera scans a defective pole piece, the clamping plate 31 is extended to synchronously clamp two sets of pole pieces.

[0072] After a defect is detected in a pole piece, the clamp 31 will clamp two pole pieces at the same time when clamping the pole piece next time. One pole piece will be loaded normally, and the pole piece relatively far away from the frame 1 will enter the movable groove 21, so that it can be replenished in time when a defect is detected next time.

[0073] It should be noted that, in this embodiment, when the feeding detection device is just started, the clamping plate 31 is in an extended state, so that when a defective electrode is detected, there is already a electrode in the movable slot 21 that can be replenished. If there are two consecutive electrode defects, it indicates that there may be problems with the electrode batch, and the feeding detection device is shut down.

[0074] Further, refer to Figure 1 and Figure 2 A loading rack 8 for storing pole pieces is installed at one end of each of the two substrates 2. A baffle 9 is connected to the side of the loading rack 8 close to the material taking structure 3. The baffle 9 is matched with the bottom wall gap of the loading rack 8 to form a first notch 81 for the material taking structure 3 to clamp the pole piece.

[0075] When two groups of pole pieces are placed on the loading rack 8 , the baffle 9 can limit the pole pieces so that the ends of the pole pieces remain flush, and the picking structure 3 clamps the pole pieces from the first notch 81 .

[0076] In a specific embodiment, a second notch 82 is provided on the bottom wall of the loading rack 8, and a roller 10 is rotatably connected in the second notch 82. When the material taking structure 3 clamps the electrode piece, the electrode piece will scrape against the bottom wall of the loading rack 8 and the electrode piece located at the upper position, and a small amount of debris will be generated (depending on the different materials of the electrode piece, the debris can be lithium cobalt oxide, graphite, lead oxide or nickel oxide), and this part of the debris will cause pollution to the environment.

[0077] By setting the roller 10 and the second notch 82, the roller 10 rotates to drive the pole piece to move, while reducing the degree of scratching, and the debris generated by the scratching can also be collected in the second notch 82, thereby better protecting the environment.

[0078] Further, refer to Figure 4 and Figure 5 In a specific embodiment, the feeding structure 7 also includes a feeding driving member 74, which is transmission-connected to the cover plate 71; a gear 75 is provided on the output shaft of the feeding driving member 74, and a tooth groove 721 is provided on the side wall of the bottom plate 72, and the bottom plate 72 is meshed with the gear 75 through the tooth groove 721.

[0079] When the feeding drive 74 drives the cover plate 71 to rotate and the receiving slot is in an open state, the feeding drive 74 also synchronously drives the bottom plate 72 to slide along the width direction of the base plate 2 through the gear 75 and the tooth groove 721. Through this connection method, one drive member can simultaneously drive the cover plate 71 to rotate and the bottom plate 72 to translate.

[0080] In addition, the feeding drive 74 and the lifting member 73 are both wirelessly connected to the controller. When the camera scans a pole piece with defects (such as wrinkles or damage), the feeding drive 74 and the lifting member 73 move synchronously.

[0081] That is, the lifting member 73 pushes out the pole piece in the accommodating groove for loading, and the bottom plate 72 that has been translated to the outside of the movable groove 21 will receive a pole piece. When the cover plate 71 closes the movable groove 21 again, the bottom plate 72 that receives a pole piece at this time retreats back into the movable groove 21 and supports the pole piece together with the lifting member 73.

[0082] Furthermore, in a specific embodiment, a suction cup may be provided at the top of the lifting member 73 to enhance the adsorption effect on the pole piece, thereby reducing the possibility that the pole piece in the movable groove 21 is displaced due to the sliding of the bottom plate 72 when the pole piece is lifted.

[0083] Further, refer to Figure 3 and Figure 4 The side of the cover plate 71 away from the frame 1 is vertically extended upward with a limit plate 20. When the cover plate 71 closes the movable groove 21, the limit plate 20 can limit the movement of the pole piece, reducing the possibility of the pole piece being offset; and when the cover plate 71 rotates and the movable groove 21 is in an open state, the clamping structure clamps two pole pieces at the same time, and the limit plate 20 can intercept the pole piece that is relatively far away from the frame 1, so that the pole piece falls onto the bottom plate 72. When the cover plate 71 is reset, the bottom plate 72 retreats into the movable groove 21, and the pole piece is supported by the bottom plate 72 and the lifting member 73.

[0084] Specifically, in a specific embodiment, the clamping plate 31 includes a fixed plate 311, an upper clamping plate 312 and a lower clamping plate 313, the upper clamping plate 312 is connected to one end of the fixed plate 311; the lower clamping plate 313 includes a first connecting plate 3131, a second connecting plate 3132 and a torsion spring, the first connecting plate 3131 is connected to the fixed plate 311, the second connecting plate 3132 is rotatably connected to the first connecting plate 3131, and the torsion spring is arranged at the connection point between the first connecting plate 3131 and the second connecting plate 3132, and the two ends are respectively against the first connecting plate 3131 and the second connecting plate 3132.

[0085] When the splint 31 clamps the electrode tab and the electrode tab is being dragged, the second connecting plate 3132 will come into contact with the limiting plate 20. The second connecting plate 3132 will rotate under the obstruction of the limiting plate 20. At this time, it is difficult for the splint 31 to clamp the electrode tab on the outside, and the electrode tab naturally falls onto the bottom plate 72.

[0086] The embodiments of the specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A feeding detection device, characterized in that, include: A frame (1) on which two substrates (2) for supporting the positive electrode sheet and the negative electrode sheet are fixedly provided, wherein a pair of the substrates (2) are arranged in an upper and lower spaced relationship; A pair of material taking structures (3), the pair of material taking structures (3) are both slidably connected to the frame (1), and are located one-to-one above the two substrates (2), and each of the material taking structures (3) reciprocates along the length direction of the corresponding substrate (2); An image detection module (5) comprising a controller and a pair of cameras disposed on the frame (1) and respectively located above a pair of substrates (2), wherein the cameras are connected to the controller and are used to obtain photographic information of the material to be detected and transmit the information to the controller; A pair of ejection structures (4), located behind the camera in a one-to-one correspondence along the electrode conveying direction, and slidably arranged along the width direction of the corresponding substrate; Wherein, the controller is connected to the ejection structure (4), and when the controller determines that the electrode piece corresponding to the photographed information has a defect, the controller controls the ejection structure (4) to eject the corresponding electrode piece; The substrate (2) is provided with an active groove (21) for storing spare pole pieces, and a material replenishment structure (7) is arranged in the active groove (21), and the material replenishment structure (7) comprises: a cover plate (71) rotatably connected to the base plate (2) and flush with the upper side of the base plate (2), the cover plate (71) being used to open or close the movable groove (21); A bottom plate (72) is slidably connected in the movable groove (21) and has a sliding stroke along the width direction of the base plate (2); A lifting member (73) is fixedly disposed in the movable groove (21) and is plugged into and matched with the bottom plate (72) to push the pole piece out of the movable groove (21); Two groups of positive plates or negative plates are arranged on the frame (1), and the material taking structure (3) comprises: A clamping plate (31), wherein the length of the clamping plate (31) is adjustable; A material taking driving member (32) connected to the clamping plate (31) and used for driving the clamping plate (31) to move; When the controller determines that the pole piece corresponding to the photographed information has a defect, the controller controls the clamping plate (31) to extend so as to synchronously clamp the two sets of pole pieces; A limiting plate (20) extends vertically upward on one side of the cover plate (71) away from the frame body (1), and the clamping plate (31) comprises: Fixed plate (311); An upper clamping plate (312) connected to one end of the fixing plate (311); The lower clamping plate (313) comprises a first connecting plate (3131) and a second connecting plate (3132), wherein one end of the first connecting plate (3131) is connected to the fixing plate (311), and the other end of the first connecting plate (3131) is twistedly connected to the second connecting plate (3132).

2. The feeding detection device according to claim 1, wherein It also includes a positioning component (6) for positioning the camera, the positioning component (6) including a slide rail (61) and a slider (62), the slide rail (61) is fixedly mounted on the frame (1), one end of the slider (62) is slidably connected to the slide rail (61), and the other end of the slider (62) is detachably connected to the camera.

3. The feeding and detecting device according to claim 1, wherein, It further includes a feeding driving member (74), and the feeding driving member (74) is in transmission connection with the cover plate (71); A gear (75) is arranged on the output shaft of the feeding driving member (74), a tooth groove (721) is formed in the side wall of the bottom plate (72), and the bottom plate (72) is meshed with the gear (75) through the tooth groove (721).

4. An automatic feeding and detecting device according to claim 1, wherein, It further includes a loading rack (8), the loading rack (8) is installed on the substrate (2) and is used for storing pole pieces. A baffle (9) is connected to one side of the loading rack (8) close to the material taking structure (3), and the baffle (9) is in clearance fit with the bottom wall of the loading rack (8) to form a first notch (81) for the material taking structure (3) to clamp the pole pieces.

5. The feeding and detecting device according to claim 4, wherein A second notch (82) is formed in the bottom wall of the loading rack (8), and a roller (10) is rotatably connected in the second notch (82).

6. The feeding and detecting device according to claim 1, wherein The ejecting structure (4) includes: A push plate (41); An ejecting driving member (42) for pushing the push plate (41) to move; A chute is formed in the substrate (2) along its own width direction, and at least part of the push plate (41) extends into the chute.

7. A coiling machine, characterized in that, It includes a coiling device, an appearance detection module and the loading detection device according to any one of claims 1-6. The loading detection device is arranged on one side of the coiling device, and the appearance detection module is arranged on the other side of the coiling device for detecting the appearance of the product.

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