Appearance detection device

Abstract

The invention provides an appearance detection device, and belongs to the technical field of battery shell appearance detection. The appearance detection device comprises a conveying assembly and an image acquisition assembly, the conveying assembly comprises a rotating disc piece, a jacking mechanism and a cam piece. The turntable piece is provided with positioning parts, and each positioning part is used for accommodating a to-be-detected battery shell; the cam part is coaxially arranged below the rotary disc part, the jacking mechanisms are arranged between the cam part and the rotary disc part, and each jacking mechanism is movably connected with the cam part and the rotary disc part. The jacking mechanism can jack up the to-be-detected battery case to a target height under the action of the cam piece; the image acquisition assembly comprises a support member and an image acquisition unit, and the image acquisition unit is used for carrying out image acquisition on the to-be-detected battery shell at the target height. According to the appearance detection device, the image acquisition unit can perform image acquisition on the to-be-detected battery shell in the high-speed rotation process, and online high-speed appearance detection of the battery shell is realized.

Description

Technical Field

[0001] This application relates to the technical field of battery case appearance detection, and particularly relates to an appearance detection device. Background Art

[0002] In the production process of cylindrical batteries, the appearance and dimension detection of battery cases are crucial for the consistency of batteries and are an essential part of battery quality control.

[0003] In related technologies, the appearance detection of battery cases often adopts a stop-shot method, where the workpiece needs to stop at the photographing point for photographing, image acquisition, and arithmetic processing, resulting in low efficiency. Summary of the Invention

[0004] This application provides an appearance detection device that can solve the problem of low efficiency in the appearance detection of battery cases using the stop-shot method.

[0005] The technical solution is as follows:

[0006] On the one hand, an appearance detection device is provided. The appearance detection device includes: a conveying component and an image acquisition component;

[0007] The conveying component includes a turntable member, a plurality of lifting mechanisms, and a cam member;

[0008] The turntable member is provided with a plurality of positioning parts, and each positioning part is respectively used to accommodate a battery case to be detected;

[0009] The cam member is coaxially arranged below the turntable member. Between the cam member and the turntable member, a plurality of the lifting mechanisms are respectively and movably connected to the cam member and the turntable member;

[0010] The top of the lifting mechanism extends into the positioning part. The lifting mechanism rotates with the turntable member and can lift the battery case to be detected upward to a target height under the action of the cam member;

[0011] The image acquisition component includes a bracket member and at least one image acquisition unit;

[0012] The bracket member is located on one side of the turntable member. The at least one image acquisition unit is connected to the bracket member, and the at least one image acquisition unit is used to perform image acquisition on the battery case to be detected at the target height.

[0013] In some embodiments, the image acquisition unit includes a first image acquisition unit and a second image acquisition unit;

[0014] The first image acquisition unit is used to acquire an image of the upper inner wall of the battery case to be detected, and the second image acquisition unit is used to acquire an image of the lower inner wall of the battery case to be detected;

[0015] and / or,

[0016] The image acquisition assembly further includes at least one supplementary light unit, and the supplementary light units are arranged in one-to-one correspondence with the image acquisition units.

[0017] In some embodiments, the bottom end of the lifting mechanism is movably connected to the top surface of the cam member;

[0018] The top surface of the cam member includes a first guide rail section, a second guide rail section, and two transition guide rail sections. The distance between the first guide rail section and the turntable member is greater than the distance between the second guide rail section and the turntable member, and the transition guide rail sections are connected between the first guide rail section and the second guide rail section.

[0019] In some embodiments, a roller member is provided at the bottom end of the lifting mechanism, and the roller member is arranged to roll on the top surface of the cam member.

[0020] In some embodiments, the conveying assembly further includes a falling-back guiding mechanism. The falling-back guiding mechanism is located on one side of the cam member, and the falling-back guiding mechanism is used to guide the roller member so that the roller member smoothly rolls from the second guide rail section along the transition guide rail section to the first guide rail section.

[0021] In some embodiments, a plurality of first lifting holes are provided at the edge of the turntable member;

[0022] A top column member is respectively provided at the top end of each lifting mechanism. The top column member is movably inserted into the first lifting hole from bottom to top, and the battery case to be detected corresponds to the top end of the top column member.

[0023] In some embodiments, a guiding disk is further provided below the turntable member, and the guiding disk is coaxially and integrally connected to the turntable member; a plurality of guiding holes are provided on the guiding disk;

[0024] Each lifting mechanism respectively includes two guiding rods, a top connecting block, and a bottom connecting block. The two guiding rods respectively extend vertically and respectively pass through two adjacent guiding holes. The top connecting block is located at the top of the guiding disk and respectively connects the top ends of the two guiding rods. The bottom connecting block is located at the bottom of the guiding disk and respectively connects the bottom ends of the two guiding rods.

[0025] In some embodiments, each of the lifting structures further includes at least one buffer spring. The at least one buffer spring is sleeved on at least one of the two guide rods, and the upper and lower ends of the at least one buffer spring respectively abut against the guide disc and the bottom connection block.

[0026] In some embodiments, a plurality of first fixtures are provided at the top surface edge of the turntable member. Each of the first fixtures corresponds to one of the lifting mechanisms, and the first fixture contacts the side wall of the battery case to be detected.

[0027] In some embodiments, the appearance detection device further includes a negative pressure component;

[0028] The first fixture includes an adsorption concave surface. The adsorption concave surface is provided with a plurality of negative pressure holes communicating with the negative pressure component, and the adsorption concave surface is adsorbed and connected to the side wall of the battery case to be detected.

[0029] The beneficial effects brought by the technical solution provided in this application at least include:

[0030] For the appearance detection device of this application, the turntable member is used to accommodate a plurality of battery cases to be detected at the same time. The image acquisition unit located on one side of the turntable member can acquire images of the battery cases to be detected during the high-speed rotation process, and use image analysis algorithms to complete the size measurement of the battery cases, realizing the on-line high-speed appearance detection of the battery cases; moreover, considering that there will inevitably be slight positioning errors after the battery cases are transported to the turntable member, and the accuracy of directly acquiring images is poor. There is a lifting mechanism and a cam member below the turntable member. As the turntable member rotates, the lifting mechanism can lift the battery cases to be detected to the target height, and the image acquisition unit acquires images of the battery cases at the same height position, which is beneficial to improving the accuracy of the images and further improving the appearance detection accuracy of the battery cases. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0032] Figure 1 is a schematic structural diagram of the appearance detection device provided by the embodiment of this application;

[0033] Figure 2 is a working principle diagram of the first image acquisition unit provided by the embodiment of this application;

[0034] Figure 3 is a working principle diagram of the second image acquisition unit provided by the embodiment of this application;

[0035] Figure 4 is a schematic structural diagram of an image acquisition component provided by an embodiment of the present application;

[0036] Figure 5 is a schematic structural diagram of a cam member provided by an embodiment of the present application;

[0037] Figure 6 is a schematic structural diagram of a jacking mechanism provided by an embodiment of the present application;

[0038] Figure 7 is Figure 1 a partial enlarged view of part A in

[0039] Figure 8 is a schematic structural diagram of a conveying bottom tray provided by an embodiment of the present application;

[0040] Figure 9 is a schematic structural diagram of a guiding sliding sleeve provided by an embodiment of the present application.

[0041] The reference numerals in the figure are respectively represented as:

[0042] 100, battery case to be detected; 1001, side wall; 1002, bottom wall; 200, conveying bottom tray; 2001, second jacking hole;

[0043] 1, conveying assembly;

[0044] 11, turntable member; 1101, upper turntable; 1102, lower turntable; 1103, bearing area; 111, positioning portion; 112, first jacking hole; 113, first fixture; 1131, adsorption concave surface; 1132, negative pressure hole; 12, jacking mechanism; 121, roller member; 122, ejector pin member; 123, guide rod; 124, top connection block; 125, bottom connection block; 126, buffer spring; 13, cam member; 131, first guide rail section; 132, second guide rail section; 133, transition guide rail section; 1331, uphill transition section; 1332, downhill transition section; 14, falling-back guiding mechanism; 15, guiding disc; 151, guiding hole; 152, guiding sliding sleeve; 1521, sleeve portion; 1522, connecting flange;

[0045] 2, image acquisition component;

[0046] 21, bracket member; 211, lifting and adjusting mechanism; 212, arc bracket; 213, vertical support plate; 22, image acquisition unit; 221, first image acquisition unit; 222, second image acquisition unit; 23, light supplement unit;

[0047] 3, negative pressure component;

[0048] 31. Negative pressure generator; 32. Rotary adapter plate. Detailed implementation mode

[0049] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation modes described in the following exemplary embodiments do not represent all implementation modes consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the Figure 1 orientation or positional relationship shown. It is only for the convenience of describing the present 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 should not be construed as a limitation to the present application.

[0051] It should be understood that in the present application, "connection" and "connection" can both refer to a mechanical connection relationship or a physical connection relationship, that is, A is connected to B or A is connected to B can mean that there are fastening members (such as screws, bolts, rivets, etc.) between A and B, or A and B are in contact with each other and it is difficult to separate A and B.

[0052] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meaning as commonly understood by those of ordinary skill in the art.

[0053] To make the purpose, technical solution and advantages of the present application clearer, the following will further describe the implementation mode of the present application in detail with reference to the drawings.

[0054] Combined with Figure 1 and Figure 7 As shown, this embodiment provides an appearance detection device, and the appearance detection device includes: a conveying component 1 and an image acquisition component 2.

[0055] The conveying assembly 1 includes a turntable member 11, a plurality of lifting mechanisms 12, and a cam member 13; the turntable member 11 is provided with a plurality of positioning portions 111, and each positioning portion 111 is respectively used to accommodate a battery case 100 to be detected; the cam member 13 is coaxially arranged below the turntable member 11, and a plurality of lifting mechanisms 12 are respectively between the cam member 13 and the turntable member 11, and each lifting mechanism 12 is movably connected to the cam member 13 and the turntable member 11; the top of the lifting mechanism 12 extends into the positioning portion 111, the lifting mechanism 12 rotates with the turntable member 11, and can lift the battery case 100 to be detected upward to a target height under the action of the cam member 13.

[0056] The image acquisition assembly 2 includes a bracket member 21 and at least one image acquisition unit 22; the bracket member 21 is located on one side of the turntable member 11, and at least one image acquisition unit 22 is connected to the bracket member 21, and at least one image acquisition unit 22 is used to acquire an image of the battery case 100 to be detected at the target height.

[0057] For the appearance detection device of the present application, the turntable member 11 is used to accommodate a plurality of battery cases 100 to be detected at the same time. The image acquisition unit 22 located on one side of the turntable member 11 can acquire an image of the battery case 100 to be detected during high-speed rotation, and use an image analysis algorithm to complete the size measurement of the battery case, realizing the on-line high-speed appearance detection of the battery case; moreover, considering that there will inevitably be slight positioning errors after the battery case is conveyed onto the turntable member 11, and the accuracy of direct image acquisition is poor. There are lifting mechanisms 12 and a cam member 13 below the turntable member 11. As the turntable member 11 rotates, the lifting mechanism 12 can lift the battery case 100 to be detected to the target height, and the image acquisition unit 22 acquires an image of the battery case at the same height position, which is beneficial to improving the accuracy of the image, and further improving the appearance detection accuracy of the battery case.

[0058] In some possible implementation manners, the cam member 13 includes a guide rail surface that undulates in the vertical direction, and the cam member 13 and the turntable member 11 are coaxial structures. During the rotation of the cam member 13 along the lifting mechanism 12, the lifting mechanism 12 can move up and down along the undulating shape of the guide rail surface. When the lifting mechanism 12 moves upward, it can lift the battery case 100 to be detected upward. By reasonably designing the undulating shape of the guide rail surface, the up and down movement trajectory of the lifting mechanism 12 can be adjusted.

[0059] In some possible implementation manners, the appearance detection device acquires an image of the battery case 100 to be detected through an image acquisition unit 22 such as a camera and an image sensor, and then analyzes and processes the image by using image processing algorithms and pattern recognition technologies to detect whether there are appearance defects on the battery case, such as scratches, cracks, holes, color deviations, unqualified dimensions, etc., so as to realize rapid and accurate evaluation of product quality, improve production efficiency and product quality, and reduce the cost and error of manual detection.

[0060] Exemplarily, the appearance detection device further includes an image processing module and a control module. Among them, the image processing module is mainly composed of computer hardware and image processing software. The hardware part provides powerful computing capabilities to support the rapid processing of a large amount of image data; the software contains various image processing algorithms and tools, such as filtering, edge detection, feature extraction, pattern matching, etc., for analyzing and processing the acquired images and extracting the feature information of the products. Optionally, the image processing module measures the key dimensions of the battery case 100 to be detected through image processing technologies to achieve high-precision dimension detection and control, and ensure that the battery case meets the design requirements.

[0061] The control module is used to issue corresponding control signals according to the detection results of the image processing module to implement operations such as classification, rejection, and alarm of the battery case 100 to be detected. For example, when a defect is detected on the battery case, the control module can control the robotic arm to remove the defective battery case from the production line or issue an alarm signal to notify the operator for processing.

[0062] In some possible implementation manners, refer to Figure 1 and Figure 8 As shown, each battery case 100 to be detected is respectively accommodated in a conveying bottom tray 200. The conveying bottom tray 200 can maintain the battery case 100 to be detected in an attitude with the opening facing upward and transport it in this attitude on the battery case production line. A stepped second jacking hole 2001 is provided in the middle of the conveying bottom tray 200, and the inner diameter of the upper section of the second jacking hole 2001 is larger than the inner diameter of the lower section of the second jacking hole 2001.

[0063] Moreover, the inner diameter of the upper section of the second jacking hole 2001 is equal to the outer diameter of the bottom end of the battery case 100 to be detected, and the bottom end of the battery case 100 to be detected is inserted into the upper section of the second jacking hole 2001. The inner diameter of the lower section of the second jacking hole 2001 is larger than or equal to the outer diameter of the top of the jacking mechanism 12, and the top end of the jacking mechanism 12 can pass through the lower section of the second jacking hole 2001 and abut against the bottom of the battery case 100 to be detected, so as to jack up the battery case 100 to be detected.

[0064] Exemplarily, each positioning portion 111 of the turntable member 11 positions and clamps each conveying bottom tray 200 to achieve the positioning and clamping of the battery case 100 to be detected.

[0065] In some possible implementation manners, referring to Figure 1 and Figure 7 As shown, the turntable member 11 is a double-layer structure, including an upper turntable 1101 and a lower turntable 1102. The outer diameter of the lower turntable 1102 is larger than that of the upper turntable 1101, so that a stepped bearing area 1103 is formed at the edge of the turntable member 11. Moreover, a plurality of positioning portions 111 formed by depressions are provided on the circumferential edge of the upper turntable 1101. After the conveying bottom tray 200 loaded with the battery case 100 to be detected is input, the bottom surface of the conveying bottom tray 200 contacts the top surface of the lower turntable 1102, and the side wall 1001 of the conveying bottom tray 200 contacts the positioning portion 111 on the circumferential edge of the upper turntable 1101, thereby stably and reliably holding the conveying bottom tray 200 and the battery case 100 to be detected on the turntable member 11.

[0066] Combined with Figure 2 and Figure 3 As shown, in some embodiments, the image acquisition unit 22 includes a first image acquisition unit 221 and a second image acquisition unit 222.

[0067] The first image acquisition unit 221 is used to acquire an image of the upper inner wall of the battery case 100 to be detected, and the second image acquisition unit 222 is used to acquire an image of the lower inner wall of the battery case 100 to be detected.

[0068] Through the above arrangement, the first image acquisition unit 221 and the second image acquisition unit 222 can respectively acquire the upper inner wall image and the lower inner wall image of the battery case 100 to be detected, and realize the appearance detection and dimension measurement of the upper inner wall and the lower inner wall of the battery case 100 to be detected.

[0069] In some possible implementation manners, the image acquisition unit 22 is a CCD (Charge Coupled Device) industrial camera or a CMOS (Complementary Metal Oxide Semiconductor) camera.

[0070] Combined with Figure 4 As shown, in some embodiments, the image acquisition assembly 2 further includes at least one supplementary light unit 23, and the supplementary light unit 23 is arranged in one-to-one correspondence with the image acquisition unit 22.

[0071] In this embodiment, in order to further improve the image acquisition quality of the image acquisition unit 22, a supplementary lighting unit 23 is respectively configured for each image acquisition unit 22. The supplementary lighting unit 23 can illuminate the inside of the battery case 100 to be detected, making the images acquired by the image acquisition unit 22 clearer.

[0072] In some possible implementation manners, referring to Figure 4 As shown, the supplementary lighting unit 23 is an annular supplementary light, and the annular supplementary light is coaxially arranged below the image acquisition unit 22, and can perform supplementary lighting on the image acquisition unit 22 without dead angles in 360 degrees.

[0073] Combined with Figure 4 As shown, in some embodiments, the support member 21 includes a lifting adjustment mechanism 211. The image acquisition unit 22 and / or the supplementary lighting unit 23 are respectively installed on the lifting adjustment mechanism 211. The lifting adjustment mechanism 211 can be used to adjust the height of the image acquisition unit 22 and / or the supplementary lighting unit 23, so that the image acquisition assembly 2 can adjust its own height according to different working requirements, or adjust the distance between itself and the battery case 100 to be detected, improving the adaptability and application range of the appearance detection device.

[0074] Exemplarily, the lifting adjustment mechanism 211 includes, but is not limited to, a slide rail and slider mechanism, a lifting cylinder, a lifting hydraulic cylinder, a lead screw and nut mechanism, and the like.

[0075] Combined with Figure 4 As shown, in some embodiments, the support member 21 includes an arc-shaped support 212. The axis of the arc-shaped support 212 coincides with the axis of the turntable member 11. The multiple image acquisition units 22 supported and fixed by the arc-shaped support 212 coincide with the rotation trajectory of the battery case 100 to be detected along with the turntable member 11. Thus, the battery case 100 to be detected can respectively pass below the multiple image acquisition units 22 to realize multiple image acquisitions, and further realize the appearance detection of the battery case 100 to be detected.

[0076] In some possible implementation manners, a plurality of vertical support plates 213 are provided on the support member 21, and the lifting adjustment mechanism 211 is arranged on the vertical support plates 213.

[0077] Combined with Figure 1 and Figure 5 As shown, in some embodiments, the bottom end of the jacking mechanism 12 is movably connected to the top surface of the cam member 13; the top surface of the cam member 13 includes a first guide rail section 131, a second guide rail section 132 and two transition guide rail sections 133. The distance between the first guide rail section 131 and the turntable member 11 is greater than the distance between the second guide rail section 132 and the turntable member 11, and the transition guide rail section 133 is connected between the first guide rail section 131 and the second guide rail section 132.

[0078] Through the above arrangement, the top surface of the cam member 13 is a convex and concave undulating shape surrounded by the first guide rail segment 131, the second guide rail segment 132 and the two transition guide rail segments 133. During the relative rotation of the lifting mechanism 12 and the cam member 13, the lifting mechanism 12 is pushed by the top surface of the cam member 13. The lifting mechanism 12 can continue to move up and down with the undulating shape of the top surface of the cam member 13, thereby realizing the lifting of the battery shell 100 to be tested.

[0079] In some possible implementations, the two transition rail sections 133 can be divided into an uphill transition section 1331 and a downhill transition section 1332, and the uphill transition section 1331 and the downhill transition section 1332 are respectively connected between the first rail section 131 and the second rail section 132. Exemplarily, the top surface of the cam member 13 is formed by the first rail section 131, the uphill transition section 1331, the second rail section 132 and the downhill transition section 1332 connected end to end. When the lifting mechanism 12 moves from the first rail section 131 to the second rail section 132, it can lift the battery shell 100 to be tested upward, and when it moves from the second rail section 132 to the first rail section 131, it can drop the battery shell 100 to be tested back to the production line, so as to facilitate the delivery of the battery shell 100 to be tested back to the production line.

[0080] Combination Figure 6 As shown, in some embodiments, a roller member 121 is provided at the bottom end of the lifting mechanism 12 , and the roller member 121 is arranged to roll on the top surface of the cam member 13 .

[0081] In order to improve the smoothness of the relative movement between the lifting mechanism 12 and the cam member 13, the present embodiment arranges a roller member 121 at the bottom end of the lifting mechanism 12, so that the lifting mechanism 12 and the top surface of the cam member 13 can roll relative to each other, and can also reduce the friction between the lifting mechanism 12 and the top surface of the cam member 13, reduce the wear of the lifting mechanism 12 and the cam member 13, and improve the service life of the appearance inspection device.

[0082] Combination Figure 5 As shown, in some embodiments, the conveying assembly 1 also includes a falling guide mechanism 14, which is located on one side of the cam member 13. The falling guide mechanism 14 is used to guide the roller member 121 so that the roller member 121 can smoothly roll from the second guide rail segment 132 along the transition guide rail segment 133 to the first guide rail segment 131.

[0083] Through the above arrangement, the return guide mechanism 14 can make the roller member 121 smoothly roll from the second guide rail section 132 along the downhill transition section 1332 to the first guide rail section 131, preventing the roller member 121 from detaching from the top surface of the cam member 13 due to inertia or failing to return and reset in time.

[0084] Exemplarily, the fallback guiding mechanism 14 is arranged above the top surface of the cam member 13. The fallback guiding mechanism 14 can force the roller member 121 to fall back downward and reset by pressing against the top edge of the roller member 121, so as to roll along the downhill transition section 1332 and fit onto the second guide rail section 132.

[0085] The fallback guiding mechanism 14 is located in the area where the downhill transition section 1332 is located, and one end of the fallback guiding mechanism 14 extends to the second guide rail section 132, and the other end extends into the first guide rail section 131.

[0086] Combined Figure 7 As shown, in some embodiments, a plurality of first jacking holes 112 are provided on the edge of the turntable member 11; a jacking post member 122 is respectively provided at the top end of each jacking mechanism 12, and the jacking post member 122 is movably inserted into the first jacking hole 112 from bottom to top, and the battery case 100 to be detected is located at the top end of the jacking post member 122.

[0087] Through the above arrangement, the jacking post member 122 at the top end of the jacking mechanism 12 can pass through the first jacking hole 112 and abut against the bottom of the battery case with detection accommodated in the turntable member 11. When the jacking mechanism 12 moves upward under the action of the cam member 13, the jacking post member 122 moves upward along the first jacking hole 112 to jack up the battery case 100 to be detected.

[0088] Exemplarily, the first jacking hole 112 is located on the lower turntable 1102 of the turntable member 11, and the first jacking hole 112 is coaxially aligned with the second jacking hole 2001 of the conveying bottom tray 200. The jacking post member 122 can sequentially pass through the first jacking hole 112 and the second jacking hole 2001 to jack up the battery case 100 to be detected.

[0089] Combined Figure 7 As shown, in some embodiments, a guide disk 15 is further provided below the turntable member 11, and the guide disk 15 is coaxially and integrally connected to the turntable member 11; a plurality of guide holes 151 are provided on the guide disk 15.

[0090] Each jacking mechanism 12 respectively includes two guide rods 123, a top connecting block 124 and a bottom connecting block 125. The two guide rods 123 respectively extend vertically and pass through two adjacent guide holes 151. The top connecting block 124 is located at the top of the guide disk 15 and is respectively connected to the top ends of the two guide rods 123. The bottom connecting block 125 is located at the bottom of the guide disk 15 and is respectively connected to the bottom ends of the two guide rods 123.

[0091] With the above arrangement, the lifting mechanism 12 is inserted into the two guiding holes 151 through the two guiding rods 123. The lifting mechanism 12 can utilize the guiding function of the guiding rods 123 and the guiding holes 151 to perform stable and reliable up-and-down movement relative to the turntable member 11, thereby improving the stability and reliability of the lifting of the battery case 100 to be detected, and further improving the appearance detection accuracy of the battery case 100 to be detected.

[0092] The top connection block 124 and the bottom connection block 125 can be respectively connected to the two guiding rods 123 to form a stable parallelogram structure. The roller member 121 is located at the bottom of the bottom connection block 125.

[0093] Among them, the guiding disk 15 is not necessarily disk-shaped, and can also be non-disk-shaped, as long as it is fixedly connected to the turntable member 11, rotates synchronously, and correspondingly covers the positioning portion 111 of the turntable member 11.

[0094] Combined Figure 7 and Figure 9 As shown, in some embodiments, the guiding disk 15 further includes a plurality of guiding sliding sleeves 152. The guiding sliding sleeves 152 correspond to the guiding holes 151 one by one. The guiding sliding sleeve 152 includes a sleeve portion 1521 and a connecting flange 1522. The sleeve portion 1521 is inserted into the guiding hole 151, the guiding rod 123 is movably inserted into the sleeve portion 1521, and the connecting flange 1522 fixedly connects the guiding sliding sleeve 152 to the guiding disk 15. By using the guiding sliding sleeve 152, the axial cooperation stroke between the guiding disk 15 and the guiding rod 123 can be increased, the stability and reliability of the axial sliding of the guiding rod 123 can be improved, and further the lifting stability of the lifting mechanism 12 and the lifting stability of the battery case 100 to be detected can be improved.

[0095] Combined Figure 6 As shown, in some embodiments, each lifting structure further includes at least one buffer spring 126. At least one buffer spring 126 is sleeved on at least one of the two guiding rods 123. The upper and lower ends of at least one buffer spring 126 respectively abut against the guiding disk 15 and the bottom connection block 125.

[0096] With the above arrangement, at least one of the at least two guiding rods 123 is sleeved with a buffer spring 126. The buffer spring 126 can apply a downward pre-tightening force to the lifting mechanism 12, so that the lifting mechanism 12 is closely attached to the top surface of the cam member 13, and the lifting mechanism 12 maintains close contact with the top surface of the cam member 13, which can prevent the lifting mechanism 12 from jumping.

[0097] Moreover, after the battery case 100 to be detected has collected the image, the buffer spring 126 can also use its own compression elastic force to force the lifting mechanism 12 to move downward, so that the battery case 100 to be detected falls back to its original position, facilitating its conveyance back to the production line.

[0098] Combined Figure 6 As shown, in some embodiments, a plurality of first jigs 113 are provided at the top surface edge of the turntable member 11. Each first jig 113 corresponds to a lifting mechanism 12 respectively, and the first jig 113 contacts the side wall 1001 of the battery case 100 to be detected.

[0099] In this embodiment, the turntable member 11 supports the battery case 100 to be detected from below. The positioning portion 111 is a concave structure arranged at the circumferential edge of the turntable member 11. The positioning portion 111 can only provide a positioning limit for the battery case 100 to be detected radially outward. Therefore, the battery case 100 to be detected can enter and exit the turntable member 11 conveniently. However, there is no radial inward positioning for the battery case 100 to be detected, and the battery case 100 to be detected may slide outwards under the action of centrifugal force. Therefore, a plurality of first jigs 113 are provided on the top of the turntable member 11. By contacting the side wall 1001 of the battery case 100 to be detected, the first jig 113 can provide an inward movement restriction along the radial direction for the battery case 100 to be detected, so that the battery case 100 to be detected can overcome the action of centrifugal force and remain on the turntable member 11.

[0100] In addition, since the first jig 113 contacts the side wall 1001 of the battery case 100 to be detected, it does not limit the axial degree of freedom (i.e., the lifting degree of freedom) of the battery case 100 to be detected, and does not affect the lifting and falling of the battery case 100 to be detected under the action of the lifting mechanism 12.

[0101] Combined Figure 1 and Figure 7 As shown, in some embodiments, the appearance detection device further includes a negative pressure assembly 3; the first jig 113 includes an adsorption concave surface 1131, and a plurality of negative pressure holes 1132 communicating with the negative pressure assembly 3 are provided on the adsorption concave surface 1131, and the adsorption concave surface 1131 is adsorbed and connected to the side wall 1001 of the battery case 100 to be detected.

[0102] Through the above arrangement, the first jig 113 can be adsorbed and connected to the side wall 1001 of the battery case 100 to be detected in the direction of negative pressure adsorption. While providing an inward binding force along the radial direction for the battery case 100 to be detected, it does not affect the axial degree of freedom of the battery case 100 to be detected. Moreover, the first jig 113 with negative pressure adsorption function has the advantages of simple structure, low maintenance and low cost.

[0103] In some possible implementation manners, referring to Figure 1As shown in the figure, the negative pressure assembly 3 includes a negative pressure generator 3131 and a rotary adapter plate 32. The negative pressure generator 3131 and the rotary adapter plate 32 are respectively arranged coaxially above the turntable member 11. Among them, the position of the negative pressure generator 3131 is fixed, and the rotary adapter plate 32 is hermetically connected to the negative pressure generator 3131 and rotates coaxially therewith. The rotary adapter plate 32 rotates synchronously with the turntable member 11. A plurality of negative pressure connection ports are provided on the circumferential side of the rotary adapter plate 32, and each negative pressure connection port is respectively connected to a negative pressure hole 1132 of a first jig 113.

[0104] In the description of the present application, the terms "a number of" and "at least one" refer to one or more, and "a plurality of" and "at least two" refer to two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0105] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise clearly and specifically defined.

[0106] Unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower level than the second feature in terms of horizontal height.

[0107] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application.

[0108] The above are only the embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the principles of the present application shall be included within the protection scope of the present application.

Claims

1. An appearance inspection device, characterized in that: The appearance detection device comprises: a conveying component (1) and an image acquisition component (2); The conveying assembly (1) comprises a turntable component (11), a plurality of lifting mechanisms (12) and a cam component (13); The rotating disk (11) is provided with a plurality of positioning portions (111), and each positioning portion (111) is used to accommodate a battery shell (100) to be tested; The cam member (13) is coaxially arranged below the turntable member (11); a plurality of lifting mechanisms (12) are respectively disposed between the cam member (13) and the turntable member (11); and each lifting mechanism (12) is movably connected to the cam member (13) and the turntable member (11); The top of the lifting mechanism (12) extends into the positioning portion (111), and the lifting mechanism (12) rotates with the turntable member (11), and can lift the battery shell (100) to be tested upward to a target height under the action of the cam member (13); The image acquisition component (2) comprises a support member (21) and at least one image acquisition unit (22); The support member (21) is located on one side of the turntable member (11), and the at least one image acquisition unit (22) is connected to the support member (21), and the at least one image acquisition unit (22) is used to acquire an image of the battery shell (100) to be inspected that is located at a target height.

2. The appearance inspection device according to claim 1, characterized in that: The image acquisition unit (22) comprises a first image acquisition unit (221) and a second image acquisition unit (222); The first image acquisition unit (221) is used to acquire an image of the upper inner wall of the battery shell (100) to be detected, and the second image acquisition unit (222) is used to acquire an image of the lower inner wall of the battery shell (100) to be detected; and / or, The image acquisition component (2) further comprises at least one fill light unit (23), and the fill light unit (23) is arranged in a one-to-one correspondence with the image acquisition unit (22).

3. The appearance inspection device according to claim 1, characterized in that: The bottom end of the lifting mechanism (12) is movably connected to the top surface of the cam member (13); The top surface of the cam member (13) comprises a first guide rail segment (131), a second guide rail segment (132) and two transition guide rail segments (133); the distance between the first guide rail segment (131) and the turntable member (11) is greater than the distance between the second guide rail segment (132) and the turntable member (11); and the transition guide rail segment (133) is connected between the first guide rail segment (131) and the second guide rail segment (132).

4. The appearance inspection device according to claim 3, characterized in that: A roller member (121) is provided at the bottom end of the lifting mechanism (12), and the roller member (121) is arranged to roll on the top surface of the cam member (13).

5. The appearance inspection device according to claim 4, characterized in that: The conveying assembly (1) further comprises a return guide mechanism (14), wherein the return guide mechanism (14) is located on one side of the cam member (13), and the return guide mechanism (14) is used to guide the roller member (121) so that the roller member (121) can smoothly roll from the second guide rail section (132) along the transition guide rail section (133) to the first guide rail section (131).

6. The appearance inspection device according to any one of claims 1 to 5, characterized in that: The edge of the turntable (11) is provided with a plurality of first lifting holes (112); A top column (122) is provided at the top of each of the lifting mechanisms (12), and the top column (122) is movably inserted into the first lifting hole (112) from bottom to top, and the battery shell (100) to be tested corresponds to the top of the top column (122).

7. The appearance inspection device according to claim 6, characterized in that: A guide plate (15) is also provided below the turntable member (11), and the guide plate (15) is coaxially and integrally connected to the turntable member (11); a plurality of guide holes (151) are provided on the guide plate (15); Each of the lifting mechanisms (12) comprises two guide rods (123), a top connecting block (124) and a bottom connecting block (125); the two guide rods (123) extend vertically and pass through two adjacent guide holes (151) respectively; the top connecting block (124) is located at the top of the guide plate (15) and is respectively connected to the top ends of the two guide rods (123); the bottom connecting block (125) is located at the bottom of the guide plate (15) and is respectively connected to the bottom ends of the two guide rods (123).

8. The appearance inspection device according to claim 7, characterized in that: Each of the lifting mechanisms (12) further comprises at least one buffer spring (126), wherein the at least one buffer spring (126) is sleeved on at least one of the two guide rods (123), and the upper and lower ends of the at least one buffer spring (126) respectively abut against the guide plate (15) and the bottom connecting block (125).

9. The appearance inspection device according to any one of claims 1 to 8, characterized in that: A plurality of first jigs (113) are provided on the edge of the top surface of the turntable (11), each of the first jigs (113) corresponds to one of the lifting mechanisms (12), and the first jigs (113) are in contact with the side wall of the battery shell (100) to be tested.

10. The appearance inspection device according to claim 9, characterized in that: The appearance detection device also includes a negative pressure component (3); The first fixture (113) comprises an adsorption concave surface (1131), the adsorption concave surface (1131) being provided with a plurality of negative pressure holes (1132) connected to the negative pressure component (3), and the adsorption concave surface (1131) being adsorbedly connected to the side wall of the battery shell (100) to be tested.

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