Pole piece defective product removing device and die cutting equipment

Abstract

The utility model belongs to the related technical field of battery cell pole piece production equipment, and particularly relates to a pole piece defective product removing device and die cutting equipment. A plurality of air pressure cavities and a conveying belt are arranged in a conveying mechanism, a plurality of air holes are formed in the conveying belt, and meanwhile, air pressure openings opposite to the conveying belt are formed in the positions, on the lower portion of the conveying mechanism, of the air pressure cavities, so that the air pressure openings can communicate with the air holes; a first air source mechanism is arranged to be connected with the air pressure cavity so as to form negative pressure in the air pressure cavity; the second air source mechanism is connected with at least one air pressure cavity so as to form positive pressure in the air pressure cavity; the air pressure change in the air pressure cavity can be realized through the first air source mechanism and the second air source mechanism, so that the adsorption or removal of the pole piece is realized through the air pressure change at the air hole. Positive pressure and negative pressure switching of the air pressure cavity is achieved through the first air source mechanism and the second air source mechanism, so that defective pole pieces are removed, and the defective product removing speed is increased.

Description

Technical Field

[0001] This utility model belongs to the technical field of battery cell electrode production equipment, and in particular relates to a defective electrode rejection device and die-cutting equipment. Background Technology

[0002] In the current process of cell stacking, efficient wafer fabrication is one of the key links to ensure equipment capacity. During the wafer fabrication process, the equipment may encounter defective products such as dimensional defects and surface defects.

[0003] In existing technologies, after equipment detects defective products, methods such as robotic arms picking up wafers or mechanical kicking are typically used to remove them from the production line to ensure that the electrode sheets used in subsequent battery cell production meet production standards. However, because the structure and movement trajectory of robotic arms picking up wafers and mechanical kicking are relatively complex, the removal efficiency is not high, and the debugging is also very difficult. Utility Model Content

[0004] To address the aforementioned issues, this invention proposes a defective electrode rejection device and a die-cutting equipment. This device achieves defect rejection through high-speed switching between positive and negative pressure. Compared to existing traditional electrode rejection structures, this method is simpler, more efficient, and easier to debug.

[0005] The purpose of this utility model, which provides a defective electrode rejection device and a die-cutting equipment, is achieved through the following technical solution:

[0006] In a first aspect, this utility model proposes a device for rejecting defective electrode sheets and a die-cutting equipment, characterized in that it includes:

[0007] The transmission mechanism includes multiple pneumatic chambers and a transmission belt, with multiple air holes provided on the transmission belt; the pneumatic chambers are located inside the transmission mechanism.

[0008] The first air source mechanism is connected to the air pressure chamber to create negative pressure within the air pressure chamber; and

[0009] The second air source mechanism is connected to at least one air pressure chamber to create positive pressure within the air pressure chamber;

[0010] The air pressure chamber has an air pressure port at the bottom of the transmission mechanism that is opposite to the transmission belt, and the air pressure port can be connected to the air hole so as to achieve adsorption or removal of the electrode through the air pressure change at the air hole.

[0011] The system incorporates multiple pressure chambers and a conveyor belt within a transmission mechanism. Multiple air vents are located within the conveyor belt. Each pressure chamber has a pressure inlet at its lower part, opposite the conveyor belt, allowing communication between the pressure inlet and the air vents. A first air source mechanism connects to the pressure chambers to create negative pressure within them, while a second air source mechanism connects to at least one pressure chamber to create positive pressure. These mechanisms allow for pressure changes within the pressure chambers, resulting in pressure variations at the air vents that attract or remove electrode sheets. The switching between positive and negative pressure within the pressure chambers via the first and second air source mechanisms removes defective electrode sheets, thereby increasing the defect removal speed.

[0012] In some embodiments, a lifting mechanism is also included, which is equipped with a lifting cylinder, and the driving end of the lifting cylinder is connected to the first bracket to lift the transmission mechanism.

[0013] The lifting mechanism allows the lifting cylinder to raise and lower the transport mechanism via the first bracket, facilitating maintenance and cleaning.

[0014] In some embodiments, a dust removal and iron removal mechanism is also included, which includes a second support, a dust removal brush, and a magnet;

[0015] The second support is installed at the bottom of the transmission mechanism. Dust removal brushes and magnets are installed on the second support to remove dust and iron filings from the lower surface of the transmission mechanism.

[0016] The dust and iron removal mechanism can clean the dust and iron filings on the belt, preventing contamination of the electrode sheets.

[0017] In some implementations, a limiting rod is also included, which is disposed at the bottom of the transmission mechanism to support the transmission mechanism.

[0018] The limit rod is used to prevent the transmission mechanism from rising or falling too low, or to prevent inconsistent height adjustments.

[0019] In some embodiments, a locking element is also included, which is disposed at the bottom of the transmission mechanism to limit the lifting height of the transmission mechanism.

[0020] Locking devices are used to prevent damage to the equipment caused by excessive lifting or lowering of the transmission mechanism.

[0021] In some embodiments, a defective product collection mechanism is also included, which is located at the bottom of the second gas source mechanism to recover defective products.

[0022] Defective electrode sheets can be recovered by means of a defective product collection mechanism located at the bottom of the second gas source mechanism.

[0023] In some embodiments, the transmission mechanism includes a drive motor, a drive roller, and a first support;

[0024] The drive motor is located on one side of the first support, and the drive roller is sleeved on the drive end of the drive motor and rotates above the first support; the conveyor belt is located on the first support and sleeved on the drive roller, and drives the vacuum belt to rotate through the drive roller.

[0025] The electrode sheet can be transported by adsorption via a vacuum belt through a transmission mechanism.

[0026] In some implementations, the pores are arranged on the conveyor belt, and the spacing between adjacent pores is smaller than the size of the electrode.

[0027] The spacing between the left and right pores is smaller than the size of the electrode sheet, which can prevent the electrode sheet from falling off during transportation.

[0028] Secondly, this utility model proposes a die-cutting device, including a die-cutting unit and a defective electrode rejection unit arranged in sequence, wherein the defective electrode rejection unit is the same as the defective electrode rejection unit described in the first aspect.

[0029] The beneficial effects of this utility model of a defective electrode rejection device and die-cutting equipment are:

[0030] The system incorporates multiple pressure chambers and a conveyor belt within a transmission mechanism. Multiple air vents are located within the conveyor belt. Each pressure chamber has a pressure inlet at its lower part, opposite the conveyor belt, allowing communication between the pressure inlet and the air vents. A first air source mechanism connects to the pressure chambers to create negative pressure within them, while a second air source mechanism connects to at least one pressure chamber to create positive pressure. These mechanisms allow for pressure changes within the pressure chambers, resulting in pressure variations at the air vents that attract or remove electrode sheets. The switching between positive and negative pressure within the pressure chambers via the first and second air source mechanisms removes defective electrode sheets, thereby increasing the defect removal speed. Attached Figure Description

[0031] Figure 1 Perspective view of the transmission mechanism, the first air source mechanism, and the second air source mechanism of the defective product rejection device of this utility model;

[0032] Figure 2 This is an isometric view of the defective product rejection device of this utility model;

[0033] Figure 3 This is a side view of the defective product rejection device of this utility model;

[0034] Figure 4 for Figure 3 Enlarged view of part a;

[0035] Figure 5 This is a side view of the defective product collection mechanism and the detection mechanism of the defective product rejection device of this utility model;

[0036] Figure 6 This is a side view of the die-cutting equipment of this utility model.

[0037] Figure label:

[0038] 100. Conveying mechanism; 110. Conveyor belt; 111. Air hole; 120. Drive roller; 121. Auxiliary roller; 130. First support; 140. Drive motor; 150. Pneumatic chamber;

[0039] 200. The first gas source organization;

[0040] 300. Second gas source institution;

[0041] 400. Lifting mechanism; 410. Lifting cylinder; 420. Third support;

[0042] 500. Dust and iron removal mechanism; 510. Second support; 520. Dust removal brush; 530. Magnet;

[0043] 600, Limit rod;

[0044] 700. Locking components;

[0045] 800. Defective product collection organization;

[0046] 910. Die-cutting device; 911. Die-cutting conveyor belt assembly; 912. Tab detection assembly; 913. Traction cutting assembly; 914. Dimension detection assembly; 915. Defect detection assembly; 920. Defective product rejection device. Detailed Implementation

[0047] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of this utility model can be combined with each other. The detailed description in the specific embodiments should be understood as an explanation of the spirit of this utility model and should not be regarded as an improper limitation of this utility model.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the specific technical solutions of this utility model will be further described in detail below with reference to the accompanying drawings of the embodiments of this utility model. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0049] In the embodiments of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0050] Furthermore, in this embodiment of the invention, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0051] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0052] In embodiments of this invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0053] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant information in a specific manner.

[0054] Example 1:

[0055] like Figure 1 As shown, this embodiment proposes a defective electrode rejection device and a die-cutting equipment, including a transmission mechanism 100, a first air source mechanism 200 and a second air source mechanism 300.

[0056] The transmission mechanism 100 includes multiple pressure chambers 150 and a transmission belt 110, the transmission belt 110 having multiple air holes 111; the pressure chambers 150 are located inside the transmission mechanism 100. A first air source mechanism 200 is connected to the pressure chambers 150 to create a negative pressure within the pressure chambers 150. A second air source mechanism 300 is connected to at least one pressure chamber 150 to create a positive pressure within the pressure chambers 150.

[0057] The air pressure chamber 150 has an air pressure port at the lower part of the transmission mechanism 100, which is opposite to the transmission belt 110. The air pressure port can be connected to the air hole 111 so as to achieve adsorption or removal of the electrode through the air pressure change at the air hole 111.

[0058] Specifically, the transmission mechanism 100 is equipped with a transmission belt 110. The electrode is disposed on the portion of the transmission belt 110 that runs to the bottom of the transmission mechanism 100 and is transported by adsorption. Multiple pressure chambers 150 can be formed inside the transmission belt 110. Each pressure chamber 150 is equipped with multiple air pressure ports (not shown in the figure), and the transmission belt 110 is equipped with multiple air holes 111. When the air holes 111 on the transmission belt 110 run to the bottom of the transmission mechanism 100, the air pressure ports align with the air holes 111, so that the electrode is adsorbed. At the same time, a first air source mechanism 200 is provided, which is connected to the pressure chambers 150 through a first air inlet (not shown in the figure) to achieve negative pressure inside the pressure chambers 150, thereby causing the air holes 111 to draw in air and adsorb the electrode. A second air source mechanism 300 is provided, connected to the pressure chamber 150 via a second air inlet (not shown in the figure). The second air source mechanism 300 allows for pressure switching within the pressure chamber 150. When no defective products are detected, the second air source mechanism 300 can operate without inputting pressure, or input negative pressure through the second air inlet to assist in adsorption. When a defective product is detected, the second air source mechanism 300 can convert the pressure inside the pressure chamber 150 to positive pressure through the second air inlet, simultaneously stopping or reducing the pressure supply from the first air source mechanism 200. This creates positive pressure inside the pressure chamber 150, blowing the electrode away from the conveyor belt 110 and, in conjunction with gravity, achieving rapid electrode removal.

[0059] Furthermore, to achieve flexible control, multiple boxes are arranged between the conveyor belts 110, each forming a pneumatic cavity 150. These boxes are arranged within the conveyor belts 110 and have air pressure holes. When the electrode is transported on the conveyor belts 110, the air pressure holes align with the air vents 111, causing the electrode to be adsorbed by negative pressure within the pneumatic cavity 150. Simultaneously, multiple first air source mechanisms 200 are provided and connected to the first air inlets of the boxes, allowing different first air source mechanisms 200 to control the pneumatic cavity 150 inside the box. Even further, at least one box near the outlet of the conveyor belt 110 is selected as a defective product discharge port, preferably two adjacent boxes. A second air inlet is provided on each box, and a second air source mechanism 300 is connected and controlled accordingly. When no defective products are detected, the second air source mechanism 300 does not output air pressure. When a defective product is detected, the second air source mechanism 300 supplies pressure while the first air source mechanism 200 connected to the same housing does not supply pressure, so as to achieve rapid switching between positive and negative pressure in the air pressure chamber 150, thereby achieving efficient rejection of defective products.

[0060] By providing multiple pressure chambers 150 and a conveyor belt 110 within the transmission mechanism 100, and providing multiple air holes 111 within the conveyor belt 110, the pressure chambers 150 are provided with air pressure ports at the lower part of the transmission mechanism 100, opposite to the conveyor belt 110, so that the air pressure ports can communicate with the air holes 111; and providing a first air source mechanism 200 connected to the pressure chambers 150 to form a negative pressure within the pressure chambers 150; and a second air source mechanism 300 connected to at least one pressure chamber 150 to form a positive pressure within the pressure chambers 150; so that the first air source mechanism 200 and the second air source mechanism 300 can achieve air pressure changes inside the pressure chambers 150, thereby achieving air pressure changes at the air holes 111 to achieve adsorption or removal of the electrode sheets. By employing a first air source mechanism 200 and a second air source mechanism 300, the positive and negative pressure of the air pressure chamber 150 can be quickly switched, thereby eliminating defective electrode sheets and improving the defective product rejection speed.

[0061] Example 2:

[0062] like Figures 2-3 As shown, in some embodiments, the transmission mechanism 100 further includes a drive motor 140, a drive roller 120, and a first support 130.

[0063] The drive motor 140 is located on one side of the first support 130, and the drive roller 120 is sleeved on the drive end of the drive motor 140 and rotates above the first support 130; the conveyor belt 110 is located on the first support 130 and sleeved on the drive roller 120, and drives the vacuum belt to rotate through the drive roller 120.

[0064] The transmission mechanism 100 rotates on a first support 130. A drive motor 140, preferably a belt-driven DD motor assembly, is fixed to one side of the first support 130 and can be screwed onto one side of the first support 130, with the drive unit facing the upper surface of the first support 130. A drive roller 120 is provided on the drive unit, rotating on the upper surface of the first support 130. A transmission belt 110, preferably a vacuum belt, is fitted onto the first support 130 and then onto the drive roller 120, causing the drive roller 120 to rotate the vacuum belt. Furthermore, reversing rollers can be provided on both sides of the first support 130 to improve the smoothness of the vacuum belt's rotation on the first support 130 and prevent damage to the vacuum belt.

[0065] Furthermore, the vacuum belt is provided with multiple air holes 111. When the air holes 111 rotate, they will coincide with the air pressure holes of the box, so that the air holes 111 can adsorb or blow out the electrode sheets.

[0066] In some embodiments, an auxiliary guide roller 121 is also included, which is arranged in parallel on both sides of the drive guide roller 120.

[0067] Specifically, the auxiliary guide rollers 121 are arranged parallel to both sides of the drive guide roller 120, and can be lowered relative to the height of the drive guide roller 120 to adjust the tension of the vacuum belt, in order to coordinate with the adjustment between the air vent 111 and the air pressure vent of the housing. By setting the auxiliary guide rollers 121, the tension of the belt can be adjusted to improve the stability of the belt during operation.

[0068] In some embodiments, the pores 111 are arranged on the vacuum belt, and the distance between adjacent pores 111 is smaller than the size of the electrode.

[0069] The pores 111 are arranged on the vacuum belt, with the spacing between adjacent pores 111 being smaller than the size of the electrode. Optionally, the adjacent pores 111 can be equal to the size of the electrode, allowing the electrode to be attracted during transport and preventing it from falling off. More preferably, the number of pores 111 can be more than four times the number of pores 111, arranged on the vacuum belt to prevent the electrode from falling off due to misalignment of the pores 111 and the air pressure port during vacuum belt movement. The spacing between the pores 111 being smaller than the size of the electrode prevents the electrode from falling off during transport.

[0070] Example 3:

[0071] like Figure 3-5 As shown, the electrode defective product rejection device of this embodiment may further include a lifting mechanism 400, a dust removal and iron removal mechanism 500, and a defective product collection mechanism 800, specifically:

[0072] In some embodiments, the lifting mechanism 400 is provided with a lifting cylinder 410, the driving end of which is connected to the first bracket 130 to lift the transmission mechanism 100.

[0073] Specifically, the lifting mechanism 400 is equipped with a lifting cylinder 410. The drive end of the lifting cylinder 410 is connected to the first bracket 130. Furthermore, the first bracket 130 is additionally screwed or integrally provided with a third bracket 420 specifically for connecting the lifting cylinder 410. The drive end of the lifting cylinder 410 is fixed to the third bracket 420 with screws to achieve lifting while avoiding damage to the components of the first bracket 130. The lifting cylinder 410 body can be fixed to an external device to achieve lifting of the drive end.

[0074] The lifting mechanism 400 enables the lifting cylinder 410 to lift the transport mechanism via the first bracket 130, facilitating maintenance and cleaning.

[0075] In some embodiments, the dust removal and iron removal mechanism 500 includes a second bracket 510, a dust removal brush 520, and a magnet 530.

[0076] The second support 510 is mounted on the bottom of the transmission mechanism 100. The dust removal brush 520 and magnet 530 are mounted on the second support 510 to remove dust and iron filings from the lower surface of the transmission mechanism 100.

[0077] Specifically, the second support 510 can be set at the bottom of the first support 130. A rotating shaft is provided on the second support 510, and a dust removal brush 520 is mounted on the rotating shaft and rotates around the shaft, with a portion of the dust removal brush 520 abutting against the conveyor belt 110. This allows the dust removal brush 520 to rotate and remove dust when the conveyor belt 110 is running. Furthermore, the dust removal brush 520 can be a bristle brush. Simultaneously, a magnet 530 is also provided on the second support 510, positioned near the conveyor belt 110, to attract metal debris. The dust removal and iron removal mechanism 500 can remove dust and iron filings from the conveyor belt 110 on the lower surface of the transmission mechanism 100, preventing dust and iron filings from contaminating the electrode sheets.

[0078] In some embodiments, a limiting rod 600 is also included, which is disposed at the bottom of the transmission mechanism 100 to support the transmission mechanism 100.

[0079] Specifically, the limiting rod 600 can be fixed to the bottom of external equipment or the electrode defective product rejection device. Preferably, the limiting rod 600 and the electrode defective product rejection device body are not integrally fixed, so that when the electrode defective product rejection device moves up and down, the limiting rod 600 moves away from the electrode defective product rejection device body. The height of the limiting rod 600 can also serve as a height limit. After determining the normal working height, the height can be positioned by the limiting rod 600 to prevent inconsistent heights during multiple adjustments. Furthermore, the limiting rod 600 is also provided with a plug-in part, and a plug-in hole can be provided on the first bracket 130. The connection and separation of the limiting rod 600 and the electrode defective product rejection device are realized by plugging and separating the plug-in part and the plug-in hole. The limiting rod 600 is used to prevent the transmission mechanism 100 from moving too low or to prevent inconsistent heights during multiple adjustments.

[0080] In some embodiments, a locking member 700 is also included, which is disposed at the bottom of the transmission mechanism 100 to limit the lifting height of the transmission mechanism 100.

[0081] Specifically, the locking component 700 is fixed to an external device, or it can be integrally fixed to the lifting cylinder 410 body. A locking part is provided on the first bracket 130, and the locking component 700 can be equipped with a locking platform. The locking platform and the locking part form a limit to prevent the entire device from lifting too high. The locking component 700 prevents damage to the equipment caused by the transmission mechanism 100 lifting too high.

[0082] In some embodiments, a defective product collection mechanism 800 is also included, which is disposed at the bottom of the second gas source mechanism 300 to recover defective products.

[0083] Specifically, the defective product collection mechanism 800 may include a collection box and a collection guide rail. The collection guide rail is located at the bottom of the pneumatic chamber 150 with the second air source mechanism 300, so that the electrode sheets are guided into the collection box by the collection guide rail during electrode sheet recovery. By setting the defective product collection mechanism 800 at the bottom of the second air source mechanism 300, defective electrode sheets can be recovered.

[0084] Example 4:

[0085] like Figure 6 As shown, this embodiment proposes a die-cutting device, including a die-cutting unit arranged in sequence, and an electrode defect rejection device 920 as mentioned in Embodiment 1 or Embodiment 2.

[0086] Specifically, the die-cutting device 910 may include a die-cutting conveyor belt assembly 911, an electrode detection assembly 912, a traction cutting assembly 913, a size detection assembly 914, and a defect detection assembly 915; the material belt released from the inlet of the die-cutting conveyor belt assembly 911 is transported to the outlet of the die-cutting conveyor belt assembly 911, and the electrode detection assembly 912, the traction cutting assembly 913, the size detection assembly 914, and the defect detection assembly 915 are arranged sequentially according to the electrode conveying direction. The material strip, input and released through the inlet of the die-cutting conveyor belt assembly 911, is inspected by the tab detection assembly 912. A dual-lens system detects the actual distance between the two tabs on the strip, controlling the main traction conveyor's electrode travel and the subsequent CCD electrode size detection. This data forms a closed loop for subsequent cutting, ensuring monitoring of the main traction conveyor size and the actual belt travel size of the electrode. Under the control of the front tab CCD and rear size CCD detection data, the traction cutting assembly 913 cuts the strip into electrode sheets. The size detection assembly 914 detects the dimensions of the four corners and positions of the tabs on the electrode sheets, forming a closed-loop control with the tab detection assembly 912 and the traction cutting assembly 913 to adjust the cutting accuracy. The defect detection assembly 915 performs front and back defect detection on the cut electrode sheets. Defective electrode sheets are rejected by the defect rejection device 920, and qualified electrode sheets are conveyed to subsequent equipment, such as a stacking device. Through multiple CCD detection closed-loop feedback and other functions, both die-cutting efficiency and electrode quality are guaranteed.

[0087] The serial numbers of the utility model embodiments are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent device or equivalent process transformation made based on the content of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this utility model.

Claims

1. A device for rejecting defective electrode sheets, characterized in that, include: The transmission mechanism (100) includes multiple pneumatic chambers (150) and a transmission belt (110), wherein multiple air holes (111) are provided on the transmission belt (110); the pneumatic chambers (150) are located inside the transmission mechanism (100); A first air source mechanism (200) is connected to the air pressure chamber (150) to form a negative pressure in the air pressure chamber (150); as well as A second air source mechanism (300) is connected to at least one of the air pressure chambers (150) to create positive pressure within the air pressure chambers (150); The air pressure chamber (150) is provided with an air pressure port at the lower part of the transmission mechanism (100) opposite to the transmission belt (110), and the air pressure port can be connected to the air hole (111) so as to achieve adsorption or removal of the electrode through the air pressure change at the air hole (111).

2. The electrode defect rejection device according to claim 1, characterized in that, It also includes a lifting mechanism (400), which is equipped with a lifting cylinder (410). The driving end of the lifting cylinder (410) is connected to the transmission mechanism (100) to lift the transmission mechanism (100).

3. The electrode defect rejection device according to claim 1, characterized in that, It also includes a dust removal and iron removal mechanism (500), which includes a second bracket (510), a dust removal brush (520), and a magnet (530); The second bracket (510) is mounted on the bottom of the transmission mechanism (100), and the dust removal brush (520) and the magnet (530) are mounted on the second bracket (510) to remove dust and iron filings from the lower surface of the transmission mechanism (100).

4. The electrode defect rejection device according to claim 1, characterized in that, It also includes a limiting rod (600), which is disposed at the bottom of the transmission mechanism (100) to support the transmission mechanism (100).

5. The electrode defect rejection device according to claim 1, characterized in that, It also includes a locking member (700) disposed at the bottom of the transmission mechanism (100) to limit the lifting height of the transmission mechanism (100).

6. The electrode defect rejection device according to claim 1, characterized in that, It also includes a defective product collection mechanism (800), which is located at the bottom of the second gas source mechanism (300) to collect defective products.

7. The electrode defect rejection device according to claim 1, characterized in that, The transmission mechanism (100) also includes a drive motor (140), a drive roller (120), and a first support (130); The drive motor (140) is located on one side of the first support (130), and the drive roller (120) is sleeved on the drive end of the drive motor (140) and rotates above the first support (130); the conveyor belt (110) is located on the first support (130) and sleeved on the drive roller (120), and the drive roller (120) drives the conveyor belt (110) to rotate.

8. The electrode defect rejection device according to claim 7, characterized in that, It also includes an auxiliary guide roller (121), which is arranged in parallel on both sides of the drive guide roller (120).

9. The electrode defective product rejection device according to claim 7, characterized in that, The pores (111) are arranged on the conveyor belt (110), and the distance between adjacent pores (111) is smaller than the size of the electrode.

10. A die-cutting device, characterized in that, It includes a die-cutting device and an electrode defect rejection device arranged in sequence, wherein the electrode defect rejection device is the electrode defect rejection device as described in any one of claims 1-9.

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