Sucking disc and detection equipment

Abstract

The utility model discloses a suction cup and detection equipment. The sucker comprises a first adsorption part, a second adsorption part and a flow guide part; the first adsorption part is provided with an air blowing cavity, the outer edge of the first adsorption part comprises a plurality of gap openings arranged in the circumferential direction, the air blowing cavity is communicated with the gap openings, the airflow sectional area of the air blowing cavity is larger than that of the gap openings, and the air blowing cavity is connected with compressed air; the flow guide part is arranged on the outer side of the first adsorption part corresponding to the gap opening; the second adsorption part is arranged on the outer side of the first adsorption part and is not located at the flow guide part, the second adsorption part comprises a plurality of adsorption areas distributed in the circumferential direction, a plurality of adsorption holes are formed in the adsorption surface of each adsorption area, and the adsorption holes are connected with a vacuum generator through an adsorption cavity; wherein the adsorption surface of the second adsorption part protrudes relative to the surface of the first adsorption part, the surface flatness of the surface of the second adsorption area is guaranteed through machining, and therefore it is guaranteed that the adsorbed silicon wafer is flat, and flow can be saved by opening the first adsorption part firstly and then opening the second adsorption area to close the first adsorption area.

Description

Technical Field

[0001] The utility model belongs to the technical field of suction cups, and in particular relates to a suction cup and a detection device. Background Art

[0002] Laser processing technology is increasingly being used in photovoltaic cell processing. The requirements for laser pattern accuracy on cell wafers are becoming increasingly stringent. Cells that fail to meet these precision standards are considered substandard and are prohibited from entering the market. Consequently, processed cells require AOI inspection. Currently, AOI inspection involves moving processed cells from a conveyor line onto an inspection platform for AOI inspection. This method requires removing the cells from the conveyor line, which is costly and impacts production capacity. It also requires pre-planning and reserved space for the inspection platform, resulting in limited flexibility. Utility Model Content

[0003] In response to the above defects or improvement needs of the prior art, the utility model provides a suction cup and a detection device, which can adsorb battery cells flatly, consume little air on the suction cup, and have low online detection costs.

[0004] To achieve the above-mentioned object, in a first aspect, the present invention provides a suction cup, comprising a first adsorption portion, a second adsorption portion and a flow guide portion;

[0005] The first adsorption portion is provided with an air blowing cavity, the outer edge of the air blowing cavity includes a plurality of slit openings arranged along the circumferential direction, the air blowing cavity is connected to each of the slit openings, and the air flow cross-sectional area of ​​the air blowing cavity is larger than the air flow cross-sectional area of ​​the slit openings, wherein the air blowing cavity is connected to compressed air;

[0006] The guide portion is arranged on the outer side of the first adsorption portion corresponding to the slit opening, extending outward along the slit opening to provide a gas guide channel; wherein the guide portion and the bottom of the slit opening are at the same height;

[0007] The second adsorption portion is arranged outside the first adsorption portion at a position other than the flow-guiding portion, and the second adsorption portion includes a plurality of adsorption areas distributed along the circumferential direction, and a plurality of adsorption holes are arranged on the adsorption surface of each adsorption area, and the adsorption holes are connected to the vacuum generator through the adsorption cavity;

[0008] The adsorption surface of the second adsorption portion is convex relative to the surface of the first adsorption portion.

[0009] Optionally, the first adsorption portion is circular or a regular polygon, the overall shape of the adsorption side of the suction cup is circular or a regular polygon, the gap openings are evenly distributed along the circumference, and the guide portion and the adsorption area are alternately arranged in the circumference.

[0010] Optionally, the first adsorption portion is circular, the overall shape of the adsorption side of the suction cup is square, the number of the slit openings is 4, and the slit openings and the guide portion are arranged corresponding to the sides of the square.

[0011] Optionally, the edge of the suction cup has a plurality of notches arranged at even intervals.

[0012] Optionally, the edge of the suction cup has four notches arranged at intervals, and the notches are located at the four corners of the suction cup.

[0013] Optionally, the suction cup includes an integrally formed suction cup base, the suction cup base includes a central portion, the central portion is provided with a vent, the suction cup base further includes a guide portion, the guide portion is provided on the suction side of the suction cup base, and the suction cup base further includes a plurality of suction areas;

[0014] The suction cup also includes a first adsorption part cover body, which is a barrel-shaped structure. The open end of the first adsorption part cover body is connected to the center part of the suction cup base to form the blowing cavity. The open end of the first adsorption part cover body has a plurality of spaced-apart notches. After the first adsorption part cover body is fixed to the center part of the suction cup base, a plurality of slit openings are formed between the first adsorption part cover body and the suction cup base.

[0015] Optionally, the suction cup includes an integrally formed suction cup base, the suction cup base includes a central portion, the central portion is provided with a vent, the suction cup base further includes a guide portion, the guide portion is provided on the suction side of the suction cup base, and the suction cup base further includes a plurality of suction areas;

[0016] The suction cup also includes a first adsorption part cover, which is a plate-like structure. A plurality of spaced-apart bosses are arranged between the first adsorption part cover and the central part of the suction cup base. One end of the boss is arranged at the outer edge of the vent, and the other end extends toward the second adsorption part, and the gap opening is formed between two adjacent bosses.

[0017] Optionally, the vent is arranged close to the adsorption side in a stepped or trumpet-shaped manner that expands outward.

[0018] Optionally, the cross section of the boss is fan-shaped, with the tip facing the vent.

[0019] Optionally, the size of the suction cup adsorption surface is 200*200mm-230*230mm, and the size of the gap is 20*20mm-50*50mm; and / or,

[0020] The slit opening width is 0.1-0.2 mm; and / or,

[0021] The guide portion has a width of 35-40 mm and a depth of 3-5 mm.

[0022] In the second aspect, the utility model provides a detection device, which includes a belt conveyor line, a gantry, a detection camera module and the aforementioned suction cup. The belt conveyor line is used to convey battery cells, the gantry is arranged across the conveyor line, and the suction cup and the detection camera module are arranged on the gantry.

[0023] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0024] In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:

[0025] The suction cup provided by the embodiment of the present invention can suck up the battery cell through the first adsorption part when it is at a certain distance from the battery cell, generally about 1 cm, and then close the first adsorption through the adsorption of the second adsorption part to ensure the flatness of the battery cell.

[0026] At the same time, it can effectively avoid using the Bernoulli principle to adsorb battery cells, thereby greatly reducing gas consumption and further reducing production costs.

[0027] The detection device provided by the embodiment of the present invention does not need to use a transport mechanism to transport the battery cell to the detection platform for detection, and the online detection cost is low and the efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a bottom view schematic diagram of a suction cup provided by an embodiment of the present utility model;

[0029] Figure 2 This is a bottom view schematic diagram of a suction cup provided by an embodiment of the present utility model;

[0030] Figure 3 This is a bottom view schematic diagram of a suction cup provided by an embodiment of the present utility model;

[0031] Figure 4 This is a bottom view schematic diagram of a suction cup provided by an embodiment of the present utility model;

[0032] Figure 5 This is a bottom view schematic diagram of a suction cup provided by an embodiment of the present utility model;

[0033] Figure 6 1 is a bottom view schematic diagram of a suction cup base of a suction cup provided by an embodiment of the present utility model;

[0034] Figure 7 This is a bottom view schematic diagram of a suction cup provided by an embodiment of the present utility model;

[0035] Figure 8This is a bottom view schematic diagram of a suction cup provided by an embodiment of the present utility model;

[0036] Figure 9 It is a structural schematic diagram of a detection device provided by an embodiment of the utility model.

[0037] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0038] 1. First adsorption part; 2. Second adsorption part; 3. Guide part; 4. Camera avoidance gap; 11. Blowing cavity; 12. Slit opening; 14. Vent; 15. First adsorption part cover; 16. Center part; 17. Boss; 21. Adsorption hole; 10. Suction cup; 20. Belt conveyor line; 30. Gantry; 40. Inspection camera module; 50. Battery cell adjustment module. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0040] In the description of the present invention, it should be understood that, unless otherwise specified, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] Furthermore, unless otherwise specified, 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, for example, two, three, etc., unless otherwise specified.

[0042] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0043] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0044] Example:

[0045] Figure 1 and Figure 2 This is a bottom view of a suction cup provided by an embodiment of the present utility model, wherein: Figure 2 Some details of the first adsorption part are shown in dotted lines. Figure 1 and Figure 2 As shown, the suction cup 10 includes a first adsorption portion 1 , a second adsorption portion 2 and a flow guide portion 3 .

[0046] The first adsorption part 1 is provided with a blowing cavity 11. The outer edge of the blowing cavity 11 of the first adsorption part 1 includes a plurality of slit openings 12 arranged along the circumferential direction. The blowing cavity 11 is connected to each slit opening 12, and the air flow cross-sectional area of ​​the blowing cavity 11 is larger than the air flow cross-sectional area of ​​the slit opening 12. The blowing cavity 11 is connected to the compressed gas. As a commonly used setting, the blowing cavity 11 is connected to the compressed gas through the vent 14. The compressed gas enters the blowing cavity 11 from the vent 14 and flows out through the slit opening 12.

[0047] The guide portion 3 is disposed outside the first adsorption portion 1, corresponding to the slit opening 12. Specifically, the guide portion 3 extends outward from the slit opening 12, providing a gas flow channel. The guide portion 3 and the bottom of the slit opening 12 are at the same height. Typically, the width of the guide portion 3 is greater than the length of the slit opening 12.

[0048] The second adsorption portion 2 is arranged outside the first adsorption portion 1 at a position other than the flow-guiding portion 3, and includes multiple adsorption zones distributed along the circumference. Preferably, the adsorption portions and the flow-guiding portions are alternately distributed, with each adsorption zone being located between two adjacent flow-guiding portions. A plurality of adsorption holes 21 are provided on the adsorption surface of each adsorption zone of the second adsorption portion 2. The adsorption holes 21 are connected to a vacuum generator via an adsorption chamber (not shown in the figure) to form negative pressure adsorption.

[0049] The adsorption surface of the second adsorption part 2 is raised relative to the surface of the first adsorption part 1. As a common use state of the suction cup, the adsorption surface is set downward. In this use state, in the vertical direction, the surface of the first adsorption part 1 is lower than the adsorption surface of the second adsorption part 2.

[0050] As those skilled in the art will appreciate, the suction cup includes a suction side (i.e., the side for adsorbing material), and the aforementioned slit openings, flow guide, and vacuum adsorption holes are all located on the suction side. The compressed gas can be introduced on the side of the suction cup facing away from the suction side, blowing air into the blowing chamber. The compressed gas then passes through the blowing chamber and the slit openings in sequence. Because the airflow cross-sectional area of ​​the blowing chamber is larger than that of the slit openings, the compressed gas generates a higher flow rate when passing through the smaller slit openings, thereby generating the Bernoulli principle: a greater negative pressure is formed at the slit openings, adsorbing the battery cell.

[0051] The second adsorption part 2 has at least two air inlets, one end of each air inlet can also be set on the side of the suction cup away from the adsorption side, connected to the adsorption chamber, the other end of one air inlet is plugged with a vacuum air pipe joint, and the other air inlet is plugged with a vacuum-breaking air pipe joint.

[0052] That is, when it is necessary to maintain the adsorption of the battery cell, the vacuum gas pipe joint is connected to the vacuum generator (the vacuum gas pipe joint seal is broken at this time), thereby forming a vacuum and achieving low-gas-consumption adsorption of the battery cell. When it is necessary to remove the battery cell, the vacuum gas pipe joint is connected to the external atmosphere (the vacuum gas pipe joint seal is broken at this time) to break the vacuum and release the adsorption of the battery cell.

[0053] For the suction cup provided in an embodiment of the present invention, when adsorbing a battery cell, the suction cup 10 is located above the battery cell (with the adsorption side facing downward), and the adsorption surface of the suction cup 10 and the battery cell are at an appropriate spacing distance. First, compressed gas is blown into the blowing chamber, and the compressed gas passes through the blowing chamber 11 and each slit opening 12 in sequence. Since the airflow cross-sectional area of ​​the blowing chamber is larger than the airflow cross-sectional area of ​​the slit opening 12, the compressed gas generates a higher flow rate when passing through the smaller slit opening 12, thereby generating the Bernoulli principle, that is, a large negative pressure is formed at the slit opening 12 to adsorb the battery cell and make the battery cell close to or against the adsorption surface of the second adsorption part 2. At this time, the compressed gas consumption is relatively large, and after the compressed gas passes through the slit opening 12, the gas is guided horizontally through the guide part 3. Next, the vacuum generator is connected to each vacuum adsorption hole 21, and compressed gas is injected into the vacuum generator. A vacuum negative pressure is formed in each vacuum adsorption hole 21, which also adsorbs the battery cell. At this time, the compressed gas is synchronously stopped from being blown into the blowing chamber 11, that is, the battery cell is only adsorbed through multiple vacuum adsorption holes 21. Since the gas consumption of the vacuum generator used subsequently is much less than the gas consumption of the previous Bernoulli principle, it is avoided to always use the Bernoulli principle to adsorb the battery cell, which can greatly reduce the gas consumption and thus reduce the production cost. Moreover, the second adsorption part 2 is distributed along the circumference, which can adsorb the battery cell flatly to avoid edge bending. Therefore, the suction cup of the present application can save gas consumption, and when it is at a certain distance from the battery cell, it can suck up the battery cell and keep the battery cell flat.

[0054] It is easy to understand that the suction cup 10 can absorb the battery cell at a distance (about 10 mm) above the battery cell.

[0055] For example, the first adsorption portion 1 can be circular or regular polygonal, and the overall shape of the adsorption side of the suction cup can also be circular or regular polygonal, and it can be made of aluminum alloy or stainless steel. Regardless of whether it is circular or regular polygonal, the first adsorption portion 1 is set at the center of the suction cup to facilitate uniform distribution. As a specific embodiment, the aforementioned slit opening 12 and the guide portion 3 are evenly arranged along the circumference of the suction cup. When the first adsorption portion 1 is circular, the slit opening 12 is evenly distributed along the circumference. When the first adsorption portion 1 is a regular polygon, it is set at the center of the corresponding side, or at the corresponding polygon corner. Figure 1 This is an example in which the first adsorption portion is circular and the suction cup is square. In other embodiments, such as Figure 3 1 is a bottom view of a suction cup according to another embodiment, wherein the first suction portion 1 is circular and the suction side of the suction cup is also circular as a whole.

[0056] Continue to see Figure 1 and Figure 2As a specific implementation method, the slit openings 12 are evenly distributed in the circumferential direction into 4, and the adjacent slit openings 12 are spaced 90 degrees apart. The corresponding guide portions 3 are also evenly distributed in the circumferential direction. Specifically, the adjacent guide portions 3 are spaced 90 degrees apart, and the four adsorption areas are also evenly distributed in the circumferential direction. The adsorption areas and the guide portions 3 are alternately arranged in the circumferential direction.

[0057] The present application is not limited thereto, and the number of slit openings may be 6, 8, 12, etc. uniformly distributed along the circumference. The guide portion is provided corresponding to the slit opening, and the adsorption area is also correspondingly distributed alternately with the guide portion. More preferably, see Figure 3 The interval between two adjacent slit openings 12 of the six slit openings is 60 degrees, the interval between adjacent guide portions 3 is also 60 degrees, and the interval between adjacent adsorption areas in the six adsorption areas is also 60 degrees.

[0058] The circumferentially evenly distributed gap openings and guide parts can make the first adsorption part more stable when acting as a Bernoulli suction cup to adsorb the battery cell. The adsorption area is also evenly distributed along the circumference, which can ensure smooth adsorption during negative pressure adsorption, especially smooth adsorption at the edge position to avoid edge bending.

[0059] It should be noted that the adsorption side of the aforementioned suction cup is circular or regular polygonal as a whole, and can be roughly circular or regular polygonal. For example, the guide part can be shorter or longer than the adsorption part, as long as it can provide a guide channel.

[0060] For example, the width of the slit opening 12 (in the vertical direction) is 0.1-0.2 mm. The width of the guide portion 3 (in the horizontal direction) is 35-40 mm, and the depth (in the vertical direction) is 3-5 mm. The bottom of the slit opening 12 is flush with the guide portion 3.

[0061] The thickness of the first adsorption part 1 can be 3-5 mm. The size of the vacuum adsorption hole 21 can be φ1.5-2.5 mm.

[0062] In this embodiment, the suction surface of the second suction portion 2 is raised relative to the surface of the first suction portion 1, and the flatness of the suction surface of the second suction portion 2 is 0.01-0.05 mm. During suction, the battery cell contacts only the second suction portion 2. Therefore, ensuring the flatness of the suction surface of the second suction portion 2 ensures close contact between the battery cell and the second suction portion 2. Therefore, ensuring the flatness of the second suction portion 2 through machining can ensure the flatness of the entire suction cup 10 during suction.

[0063] For example, the height of the adsorption surface of the second adsorption part 2 relative to the surface of the first adsorption part 1 is 0.3-0.5 mm.

[0064] See also Figure 4In this embodiment, a suction cup used for AOI inspection of battery cells has multiple spaced-apart camera-avoiding notches 4 on its outer edge. These notches provide a way for the inspection camera module 40 positioned above the suction cup to take photos after the suction cup 10 has attached the battery cell, ensuring that the inspection camera module 40 can capture the battery cell.

[0065] See also Figure 4 、 Figure 5 and Figure 6 , are bottom views of the suction cups of one embodiment. Figure 4 The first suction portion 1 is circular, the overall suction cup is square, and the camera avoidance notches 4 are located at right angles to the overall suction cup. This allows the use of four cameras to position the cell. Regardless of the notch placement, each suction area is equipped with multiple vacuum suction holes 21, and the suction holes near the notch are positioned as close to the notch as possible to ensure proper absorption of the cell edge.

[0066] Through the above-mentioned settings, the present application can not only achieve camera avoidance, but also achieve adsorption of the edge of the battery cell, preventing the edge of the battery cell from bending downward due to gravity, thereby ensuring the adsorption effect of the battery cell.

[0067] For example, the size of the suction cup adsorption surface may be 200*200mm-230*230mm, and the size of each camera avoidance gap 4 may be 20*20mm-50*50mm.

[0068] The suction cup of the present application, the first suction part 1, the second suction part 2 and the guide part 3 can be processed separately and then assembled together. As a preferred embodiment, the second suction part 2, the guide part 3 and part of the first suction part of the suction cup can be integrally formed into a suction cup base, and then through the first suction part cover 15. Figure 6 , Figure 6 It is a bottom-up schematic diagram of the suction cup base, which includes a central portion 16, on which a vent 14 and a guide portion 3 are provided. The guide portion 3 is provided on the adsorption side of the suction cup base, has the same height as the central portion, and is evenly distributed along the circumference. The suction cup base also includes multiple adsorption areas, wherein each adsorption area is provided with an adsorption cavity, and the adsorption side of the adsorption area is provided with a negative pressure adsorption hole 21 connected to the adsorption cavity, wherein the adsorption surface of the second adsorption portion 2 is raised relative to the guide portion 3.

[0069] See also Figure 7, is a bottom-up schematic diagram of a suction cup according to an embodiment of the present application, wherein the position of the slit is indicated to show the slit opening. The suction cup of the present application further comprises a first adsorption portion cover 15, which is fixed to the central portion 16 of the suction cup base, and the slit opening 12 is arranged on the first adsorption portion cover 15. For example, the first adsorption portion cover 15 can be a barrel-shaped structure, for example, it can be a bowl-shaped structure or a bottle cap-shaped structure, and its open end is connected to the central portion 16 of the suction cup base to form the blowing cavity 11. In addition, the open end of the first adsorption portion cover 15 has a plurality of spaced-apart notches, so that after the first adsorption portion cover 15 is fixed to the suction cup base, a plurality of slit openings 12 are formed between the first adsorption portion cover 15 and the suction cup base. In this embodiment, the slit opening 12 is preferably arc-shaped. The first adsorption portion cover 15 can be fixed to the central portion 16 of the suction cup base by bolts or the like, for example, the edge of the first adsorption portion cover 15 is fixed to the central portion 16 of the suction cup base by bolts.

[0070] See also Figure 8 , is a bottom view schematic diagram of a suction cup according to an embodiment of the present application, wherein the boss is indicated by a dotted line and the direction of the airflow is indicated by an arrow. As another embodiment, the first adsorption part cover 15 can also be a plate-like structure, and a plurality of spaced bosses 17 are provided between the first adsorption part cover 15 and the center part 16 of the suction cup base. One end of the boss 17 is provided at the outer edge of the vent 14, and the other end extends toward the second adsorption part 2, so that the gap opening 12 is formed between two adjacent bosses 17. When arranged in this way, the vent 14 near the adsorption side can be arranged in an outwardly expanding stepped shape or a trumpet shape, thereby forming a larger blowing cavity 11. With such an arrangement, the first adsorption part cover 15, the boss 17 and the center part 16 of the suction cup base can be locked with bolts. Among them, the boss 17 can be integrally formed with the center part of the suction cup base, or integrally formed with the first adsorption part cover 15, or formed separately.

[0071] In the above embodiment, on the one hand, the boss 17 can cooperate with the first adsorption portion cover 15 and the suction cup base to form the gap opening 12, without the need for additional processing to form the gap opening 12. On the other hand, the boss 17 plays the role of connecting the first adsorption portion cover 15 and the suction cup base.

[0072] Furthermore, the cross-section of the boss 17 is fan-shaped, with its tip pointing toward the vent 14. This creates a fan-shaped structure for the slit openings 12, and the cross-sectional area of ​​each slit opening 12 facing the air guide 3 is larger than the cross-sectional area of ​​the air flow facing the vent. In other words, one end of the slit opening 12 is larger, while the other end is smaller. The smaller end directly connects to the inflatable chamber, resulting in a higher gas flow rate and a greater negative pressure. The larger end, on the other hand, can conveniently connect to the air guide 3, facilitating air diversion and exhaust.

[0073] Figure 9This is a schematic diagram of the structure of a detection device provided by an embodiment of the present utility model. Figure 9 As shown, the detection equipment includes a belt conveyor line 20, a gantry 30, a detection camera module 40 and the above-mentioned suction cup 10. The belt conveyor line 20 is used to convey battery cells. The gantry 30 is arranged across the belt conveyor line 20. The suction cup 10 and the detection camera module 40 can be movably arranged on the gantry 30. Specifically, they are arranged above the belt conveyor line 20 to absorb the battery cells on the belt conveyor line 20 and then take pictures.

[0074] Specifically, the battery cell is transferred to the bottom of the gantry 30 via the belt conveyor line 20, the suction cup 10 sucks up the battery cell, and the inspection camera module 40 takes a picture to perform AOI inspection on the battery cell. After the inspection is completed, the suction cup 10 releases the vacuum and the battery cell falls back onto the belt conveyor line 20.

[0075] Exemplarily, the detection camera module 40 is composed of four camera units, each of which takes a picture of the battery cell through the corresponding camera avoidance notch 4 .

[0076] Furthermore, the inspection device also includes a cell adjustment module 50, which is used to adjust the position of the cells on the belt conveyor line 20 to ensure that the cells are in the center of the field of view of the inspection camera module 40. The cell adjustment module 50 can be a two-side centering clamp, a four-side centering clamp, etc. in the prior art.

[0077] The testing equipment provided by this application does not require a transport mechanism to transport the battery cells to the testing platform for testing, which reduces the cost and improves the efficiency of online testing. The aforementioned suction cup ensures that the battery cells are adsorbed flatly and consumes little gas.

[0078] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A suction cup, characterized in that: The suction cup includes a first adsorption portion, a second adsorption portion and a flow guide portion; The first adsorption portion is provided with an air blowing cavity, the outer edge of the air blowing cavity includes a plurality of slit openings arranged along the circumferential direction, the air blowing cavity is connected to each of the slit openings, and the air flow cross-sectional area of ​​the air blowing cavity is larger than the air flow cross-sectional area of ​​the slit openings, wherein the air blowing cavity is connected to compressed air; The guide portion is arranged on the outer side of the first adsorption portion corresponding to the slit opening, extending outward along the slit opening to provide a gas guide channel; wherein the guide portion and the bottom of the slit opening are at the same height; The second adsorption portion is arranged outside the first adsorption portion at a position other than the flow-guiding portion, and the second adsorption portion includes a plurality of adsorption areas distributed along the circumferential direction, and a plurality of adsorption holes are arranged on the adsorption surface of each adsorption area, and the adsorption holes are connected to the vacuum generator through the adsorption cavity; The adsorption surface of the second adsorption portion is convex relative to the surface of the first adsorption portion.

2. The suction cup according to claim 1, wherein The first adsorption portion is circular or a regular polygon, the overall shape of the adsorption side of the suction cup is circular or a regular polygon, the slit openings are evenly distributed along the circumference, and the guide portion and the adsorption area are alternately arranged in the circumference.

3. The suction cup according to claim 2, wherein: The first adsorption portion is circular, the overall shape of the adsorption side of the suction cup is square, there are four slit openings, and the slit openings and the guide portion are arranged corresponding to the sides of the square.

4. The suction cup according to claim 1, wherein: The edge of the suction cup has a plurality of notches arranged at even intervals.

5. The suction cup according to claim 4, characterized in that: The edge of the suction cup has four notches arranged at intervals, and the notches are located at the four corners of the suction cup.

6. The suction cup according to any one of claims 1 to 5, characterized in that: The suction cup includes an integrally formed suction cup base, the suction cup base includes a central portion, the central portion is provided with a vent, the suction cup base also includes a guide portion, the guide portion is provided on the suction side of the suction cup base, and the suction cup base also includes a plurality of suction areas; The suction cup also includes a first adsorption part cover body, which is a barrel-shaped structure. The open end of the first adsorption part cover body is connected to the center part of the suction cup base to form the blowing cavity. The open end of the first adsorption part cover body has a plurality of spaced-apart notches. After the first adsorption part cover body is fixed to the center part of the suction cup base, a plurality of slit openings are formed between the first adsorption part cover body and the suction cup base.

7. The suction cup according to any one of claims 1 to 5, characterized in that: The suction cup includes an integrally formed suction cup base, the suction cup base includes a central portion, the central portion is provided with a vent, the suction cup base also includes a guide portion, the guide portion is provided on the suction side of the suction cup base, and the suction cup base also includes a plurality of suction areas; The suction cup also includes a first adsorption part cover, which is a plate-like structure. A plurality of spaced-apart bosses are arranged between the first adsorption part cover and the central part of the suction cup base. One end of the boss is arranged at the outer edge of the vent, and the other end extends toward the second adsorption part, and the gap opening is formed between two adjacent bosses.

8. The suction cup according to claim 7, characterized in that: The vent is arranged close to the adsorption side in a stepped or trumpet-shaped manner that expands outward.

9. The suction cup according to claim 7, wherein: The cross section of the boss is fan-shaped, and the tip is arranged toward the vent.

10. The suction cup according to claim 4 or 5, characterized in that: The size of the suction cup adsorption surface is 200*200mm-230*230mm, and the size of the gap is 20*20mm-50*50mm; and / or, The slit opening width is 0.1-0.2 mm; and / or, The guide portion has a width of 35-40 mm and a depth of 3-5 mm.

11. A detection device, characterized in that: The detection equipment includes a belt conveyor line, a gantry, a detection camera module and the suction cup according to any one of claims 1 to 10. The belt conveyor line is used to convey battery cells. The gantry is arranged across the conveyor line. The suction cup and the detection camera module are arranged on the gantry.

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