Visual inspection mechanism

Abstract

The utility model discloses a visual inspection mechanism, which comprises a transmission assembly, a detection assembly, a detection assembly and a control assembly, and is characterized in that the transmission assembly is used for transmitting a material belt along a first direction; the translation assembly is located on one side of the transmission assembly; the detection module is installed on the translation assembly, the detection module comprises a camera and a pose switching assembly, the pose switching assembly is installed on the translation assembly, the camera is installed on the pose switching assembly, and the camera is used for obtaining image information of an area corresponding to the material belt so as to detect the material belt; the pose switching assembly is used for driving the camera to be switched between the first state and the second state. According to the visual inspection mechanism provided by the embodiment of the utility model, the problem of pole piece quality inspection in the first direction and the second direction is solved by rotating a set of camera, and the traditional method that a set of camera can only independently detect the quality in one direction is replaced, so that the inspection cost of equipment is reduced exponentially.

Description

Technical Field

[0001] The utility model relates to the field of battery pole piece detection, in particular to a visual detection mechanism. Background Art

[0002] At present, in the production process of new energy lithium batteries, the positive and negative electrode sheet coils need to undergo surface processing such as laser cleaning, punching, and scribing. After processing, cameras are needed to inspect the processing quality in two directions of the electrode sheets to meet specific process requirements.

[0003] The existing method on the market to solve the quality inspection of the two directions of the pole piece is to use two sets of cameras for separate inspection. However, the configuration cost of two sets of cameras is relatively high, especially high-precision cameras are expensive and the inspection cost is high. Utility Model Content

[0004] The embodiment of the utility model provides a visual inspection mechanism, which uses a set of rotating cameras to solve the pole piece quality inspection in the first direction and the second direction, instead of a traditional set of cameras that can only inspect the quality in one direction alone, thereby reducing the inspection cost of the equipment by several times.

[0005] An embodiment of the utility model provides a visual inspection mechanism for inspecting a material strip of a battery electrode, the visual inspection mechanism comprising: a transmission component, the transmission component being used to transmit the material strip along a first direction; a translation component, the translation component being located on one side of the transmission component and extending along a second direction, the second direction being perpendicular to the first direction; a detection module, the detection module being mounted on the translation component, the translation component being used to drive the detection module to move along the second direction, the detection module comprising a camera and a posture switching component, the posture switching component being mounted on the translation component, the camera being mounted on the posture switching component, the camera being used to obtain image information of a corresponding area of ​​the material strip to inspect the material strip, the posture switching component being used to drive the camera to switch between a first state and a second state, wherein in the first state, the camera is parallel to the first direction, and in the second state, the camera is parallel to the second direction.

[0006] According to any of the foregoing embodiments of the present utility model, the posture switching component comprises:

[0007] A mounting frame connected to the translation assembly;

[0008] A rotating bracket, the rotating bracket is rotatably mounted on the mounting seat, and the camera is mounted on the rotating bracket;

[0009] A driving assembly is installed on the mounting seat and is drivingly connected to the rotating bracket. The driving assembly is used to drive the rotating bracket to rotate so that the camera switches between the first state and the second state.

[0010] According to any of the foregoing embodiments of the present utility model, the drive assembly comprises:

[0011] A telescopic driving member, the telescopic driving member having a driving portion and a telescopic portion, the driving portion being rotatably connected to the mounting seat;

[0012] A connecting rod, one end of which is fixedly connected to the rotating bracket, and the other end of which is rotatably connected to the telescopic part, the telescopic axis of the telescopic part is perpendicular to the rotating axis of the rotating bracket, and the telescopic movement of the telescopic part drives the rotating bracket to rotate through the connecting rod.

[0013] According to any of the aforementioned embodiments of the present utility model, the visual detection mechanism further includes:

[0014] At least one calibration piece is disposed on at least one side of the transmission component, and the camera can be calibrated based on acquiring an image of the calibration piece to obtain focal length deviation information.

[0015] According to any of the aforementioned embodiments of the present utility model, the number of the calibration members is two, and the two calibration members are respectively located on opposite sides of the transmission component.

[0016] According to any of the aforementioned embodiments of the utility model, the number of the detection modules is multiple, one of two adjacent detection modules is provided with a trigger member, and the other is provided with a detection member, and when the distance between the two adjacent detection modules is less than a preset value, the trigger member triggers the detection member.

[0017] According to any of the aforementioned embodiments of the present utility model, the visual detection mechanism has a first detection mode and a second detection mode.

[0018] In the first detection mode, the camera is switched to the first state, the translation component stops moving, and the transmission component continues to transmit the material strip along the first direction, so that the camera performs detection along the first direction of the material strip;

[0019] In the second detection mode, the camera switches to the second state, the transmission component suspends transmission, and the translation component drives the detection module to move along the second direction, so that the camera performs detection along the second direction of the material strip.

[0020] According to any of the aforementioned embodiments of the present invention, the transmission component includes a first roller and a second roller arranged at intervals along the first direction, and the material belt is wound around the first roller and the second roller.

[0021] According to any of the aforementioned embodiments of the present utility model, the translation assembly includes a linear module, a linear motor translation assembly, a belt translation assembly, a chain translation assembly, or a cylinder telescopic translation assembly.

[0022] According to any of the aforementioned embodiments of the utility model, the visual inspection mechanism is used to perform quality inspection on the laser cleaning area, laser scribing track or laser drilling area of ​​the material strip.

[0023] The embodiment of the utility model adopts a design in which a translation component is used to drive the detection module to move in coordination with the translation component. Through the translation component and the posture switching component, the camera can work in the first state and the second state, and detection in the first direction and the second direction is realized, thereby improving the flexibility and comprehensiveness of visual detection. The transmission component, the translation component and the detection module are tightly combined and occupy a small space, so that the volume of the entire visual detection system is small and suitable for limited working space. Detection in different directions can be completed on the same camera, reducing the number of cameras required and reducing the production cost exponentially. By acquiring the image information of the corresponding area of ​​the material belt through the camera, combined with the adjustment of the posture switching component, accurate detection of the material belt can be achieved, the accuracy and reliability of the detection are improved, and the transmission, movement and detection functions are integrated into one. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 This is a structural schematic diagram of an embodiment of the visual detection mechanism of the utility model;

[0026] Figure 2 This is a structural schematic diagram of a detection module in an embodiment of a visual detection mechanism of the utility model;

[0027] Figure 3 This is a structural schematic diagram of a camera in a first state in an embodiment of a visual detection mechanism of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the second state of the camera in one embodiment of the visual detection mechanism of the utility model.

[0029] Description of Figure Numbers:

[0030] 100-transmission assembly; 111-first roller; 112-second roller;

[0031] 200-translation component;

[0032] 300-detection module; 310-camera; 320-position switching assembly; 321-mounting frame; 322-rotating bracket; 323-driving assembly; 3231-telescopic driving member; 3232-connecting rod; 3231a-driving part; 3231b-telescopic part;

[0033] 400-calibration parts;

[0034] 500-test pieces;

[0035] 600-trigger;

[0036] 700- material strip;

[0037] MD-first direction; TD-second direction.

[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with the embodiments with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0042] The embodiment of the utility model provides a visual inspection mechanism for inspecting a material strip of a battery electrode. Figure 1 It is a structural schematic diagram of an embodiment of the visual detection mechanism of the utility model. Figure 2 It is a structural schematic diagram of a detection module in one embodiment of the visual detection mechanism of the utility model. Figure 3 It is a structural schematic diagram of the first state of a camera in one embodiment of the visual detection mechanism of the utility model. Figure 4 It is a structural schematic diagram of the second state of the camera in one embodiment of the visual detection mechanism of the utility model.

[0043] Figures 1 to 4 As shown, the visual inspection mechanism includes a transmission component 100 , a translation component 200 and a detection module 300 .

[0044] The transmission component 100 is used to transmit the material belt 700 along the first direction MD. The translation component 200 is located at one side of the transmission component 100 and extends along the second direction TD, and the second direction TD is perpendicular to the first direction MD. The detection module 300 is installed on the translation component 200, and the translation component 200 is used to drive the detection module 300 to move along the second direction TD. The detection module 300 includes a camera 310 and a posture switching component 320. The posture switching component 320 is installed on the translation component 200. The camera 310 is installed on the posture switching component 320. The camera 310 is used to obtain image information of the corresponding area of ​​the material belt 700 to detect the material belt 700. The posture switching component 320 is used to drive the camera 310 to switch between a first state and a second state. In the first state, the camera 310 is parallel to the first direction MD, and in the second state, the camera 310 is parallel to the second direction TD.

[0045] The embodiment of the utility model adopts the design of using the translation component 200 to drive the detection module 300 to move in coordination with the translation component 200. Through the translation component 200 and the posture switching component 320, the camera 310 can work in the first state and the second state, realizing the detection in the first direction MD and the second direction TD, and improving the flexibility and comprehensiveness of visual detection. The transmission component 100, the translation component 200 and the detection module 300 are closely combined and occupy a small space, so that the volume of the entire visual detection system is small and suitable for limited working space. Detection in different directions can be completed on the same camera 310, reducing the number of cameras 310 required and reducing the production cost by multiples. By obtaining the image information of the corresponding area of ​​the material belt 700 through the camera 310, combined with the adjustment of the posture switching component 320, it is possible to achieve accurate detection of the material belt 700, improve the accuracy and reliability of detection, and integrate the transmission, movement and detection functions into one.

[0046] In some embodiments, the posture switching assembly 320 includes a mounting frame 321, a rotating bracket 322, and a driving assembly 323. The mounting frame 321 is connected to the translation assembly 200. The rotating bracket 322 is rotatably mounted on the mounting seat, and the camera 310 is mounted on the rotating bracket 322. The driving assembly 323 is mounted on the mounting seat and is in transmission connection with the rotating bracket 322. The driving assembly 323 is used to drive the rotating bracket 322 to rotate, so that the camera 310 switches between the first state and the second state.

[0047] In some embodiments, the driving assembly 323 includes a telescopic driving member 3231 and a connecting rod 3232. The telescopic driving member 3231 is, for example, a telescopic cylinder. The telescopic driving member 3231 has a driving portion 3231a and a telescopic portion 3231b, and the driving portion 3231a is rotatably connected to the mounting seat. One end of the connecting rod 3232 is fixedly connected to the rotating bracket 322, and the other end of the connecting rod 3232 is rotatably connected to the telescopic portion 3231b. The telescopic axis of the telescopic portion 3231b is perpendicular to the rotation axis of the rotating bracket 322, and the telescopic movement of the telescopic portion 3231b drives the rotating bracket 322 to rotate through the connecting rod 3232.

[0048] In some other embodiments, the driving component 323 is not limited to the structure of the above example, for example, it may also include a rotating cylinder, which is fixedly mounted on a mounting base, and the rotating part of the rotating cylinder is connected to the rotating bracket 322, thereby driving the rotating bracket 322 to rotate.

[0049] When the equipment is running, after the pole piece is cleaned, marked and punched according to the laser process, the material belt 700 is conveyed to the camera 310 inspection station. When it is necessary to inspect the quality of the laser-cleaned area, the laser-marked line or the laser-punched hole in the first direction MD, the telescopic drive member 3231 in the posture switching component 320 is retracted to rotate the camera 310 counterclockwise by 90 degrees so that the camera 310 is parallel to the first direction MD. The translation component 200 translates the detection module 300 to the corresponding position, and then the material belt 700 continues to convey to scan and detect the quality within the detection range of the camera 310 in the first direction MD; when the pole piece needs to inspect the quality of multiple areas in the first direction MD in the second direction TD, the translation component 200 is moved to the specified position to complete the inspection in this way.

[0050] When it is necessary to perform quality inspection on the area cleaned by laser in the second direction TD of the pole piece, the lines marked by laser or the holes punched by laser, the telescopic part 3231b of the telescopic drive member 3231 in the detection module 300 is extended to rotate the camera 310 90 degrees clockwise to make the camera 310 parallel to the second direction TD; then the material belt 700 stops running, and the translation assembly 200 translates the detection module 300 to scan the quality inspection of the corresponding position in the second direction TD within the detection range of the camera 310; when the quality of multiple areas in the second direction TD needs to be inspected in the first direction MD of the pole piece, the material belt 700 continues to run to the specified position, and then stops running, and the inspection can be completed by this method.

[0051] In some embodiments, the visual inspection mechanism further includes: at least one calibration piece 400, which is disposed on at least one side of the transmission component 100, and the camera 310 can be calibrated based on the image of the calibration piece 400 to obtain focal length deviation information. In order to ensure the stability and accuracy of the camera 310 before and after rotation, after the rotation of the camera 310 is completed, the translation component 200 translates the camera 310 to the calibration position, and the calibration piece 400 calibrates the camera 310. When there is a deviation, compensation correction is performed through the control system. The calibration piece 400 is mainly a high-precision reference plane, and its size can be compatible with the camera 310 before and after rotation. If a defocus deviation is found during the calibration process, the laser control system will automatically compensate, and the compensation method includes: changing the laser power and frequency, focal length compensation adjustment, etc., or manual intervention after an alarm.

[0052] In some embodiments, there are two calibration pieces 400, and the two calibration pieces 400 are respectively located on opposite sides of the transmission component 100. The two calibration pieces 400 calibrate different cameras 310 respectively, thereby improving the detection efficiency of the mechanism.

[0053] In some embodiments, there are multiple detection modules 300, one of two adjacent detection modules 300 is provided with a triggering member 600, and the other is provided with a detection member 500, and when the distance between the two adjacent detection modules 300 is less than a preset value, the triggering member 600 triggers the detection member 500, thereby preventing multiple detection modules 300 from colliding and affecting the detection efficiency.

[0054] In some embodiments, the visual inspection mechanism has a first inspection mode and a second inspection mode. In the first inspection mode, the camera 310 is switched to the first state, the translation assembly 200 is suspended, and the transmission assembly 100 continuously transmits the material belt 700 along the first direction MD, so that the camera 310 performs inspection along the first direction MD of the material belt 700. In the second inspection mode, the camera 310 is switched to the second state, the transmission assembly 100 is suspended, and the translation assembly 200 drives the inspection module 300 to move along the second direction TD, so that the camera 310 performs inspection along the second direction TD of the material belt 700.

[0055] In some embodiments, the transmission assembly 100 includes a first roller 111 and a second roller 112 arranged at intervals along a first direction MD, and the material belt 700 is wound around the first roller 111 and the second roller 112. The design of the first roller 111 and the second roller 112 being arranged at intervals along the first direction MD can effectively support the material belt 700 and ensure that the material maintains a stable movement during the conveying process.

[0056] In some embodiments, the translation assembly 200 includes a linear module, a linear motor translation assembly, a belt translation assembly, a chain translation assembly, or a cylinder telescopic translation assembly. Different types of translation assemblies 200 can meet different application requirements. Different types of translation assemblies 200 have different control methods and characteristics, which can be selected and adjusted according to specific needs. This flexibility allows the translation assembly 200 to adapt to different production environments and process requirements, meet various production needs and improve production efficiency.

[0057] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A visual inspection mechanism for inspecting the material strip of a battery pole piece, characterized in that: The visual inspection mechanism comprises: A transmission component, the transmission component is used to transmit the material strip along a first direction; A translation assembly, the translation assembly is located on one side of the transmission assembly and extends along a second direction, the second direction being perpendicular to the first direction; A detection module, wherein the detection module is mounted on the translation component, and the translation component is used to drive the detection module to move along the second direction. The detection module includes a camera and a posture switching component, and the posture switching component is mounted on the translation component. The camera is mounted on the posture switching component, and the camera is used to obtain image information of a corresponding area of ​​the material belt to detect the material belt. The posture switching component is used to drive the camera to switch between a first state and a second state. In the first state, the camera is parallel to the first direction, and in the second state, the camera is parallel to the second direction.

2. The visual inspection mechanism according to claim 1, characterized in that: The posture switching component comprises: A mounting frame connected to the translation assembly; A rotating bracket, the rotating bracket is rotatably mounted on the mounting frame, and the camera is mounted on the rotating bracket; A driving assembly is installed on the mounting frame and is drivingly connected to the rotating bracket. The driving assembly is used to drive the rotating bracket to rotate so that the camera switches between the first state and the second state.

3. The visual inspection mechanism according to claim 2, characterized in that: The drive assembly comprises: A telescopic driving member, the telescopic driving member having a driving portion and a telescopic portion, the driving portion being rotatably connected to the mounting frame; A connecting rod, one end of which is fixedly connected to the rotating bracket, and the other end of which is rotatably connected to the telescopic part, the telescopic axis of the telescopic part is perpendicular to the rotating axis of the rotating bracket, and the telescopic movement of the telescopic part drives the rotating bracket to rotate through the connecting rod.

4. The visual inspection mechanism according to claim 1, characterized in that: The visual detection mechanism also includes: At least one calibration piece is disposed on at least one side of the transmission component, and the camera can be calibrated based on acquiring an image of the calibration piece to obtain focal length deviation information.

5. The visual inspection mechanism according to claim 4, characterized in that: The number of the calibration pieces is two, and the two calibration pieces are respectively located on two opposite sides of the transmission component.

6. The visual inspection mechanism according to claim 1, characterized in that: There are multiple detection modules, one of two adjacent detection modules is provided with a trigger component, and the other is provided with a detection component. When the distance between the two adjacent detection modules is less than a preset value, the trigger component triggers the detection component.

7. The visual inspection mechanism according to claim 1, characterized in that: The visual detection mechanism has a first detection mode and a second detection mode, In the first detection mode, the camera is switched to the first state, the translation component stops moving, and the transmission component continues to transmit the material strip along the first direction, so that the camera performs detection along the first direction of the material strip; In the second detection mode, the camera switches to the second state, the transmission component suspends transmission, and the translation component drives the detection module to move along the second direction, so that the camera performs detection along the second direction of the material strip.

8. The visual inspection mechanism according to claim 1, characterized in that: The transmission component includes a first roller and a second roller arranged at intervals along the first direction, and the material belt is wound around the first roller and the second roller.

9. The visual inspection mechanism according to claim 1, characterized in that: The translation assembly includes a linear module, a linear motor translation assembly, a belt translation assembly, a chain translation assembly, or a cylinder telescopic translation assembly.

10. The visual inspection mechanism according to claim 1, characterized in that: The visual inspection mechanism is used to perform quality inspection on the laser cleaning area, laser scribing track or laser drilling area of ​​the material strip.

Images