A three-station vision detection device for diaphragm dot coating

Abstract

The utility model belongs to diaphragm detection device technical field, concretely relates to a diaphragm point coating three station visual detection device, and this diaphragm point coating three station visual detection device includes: conveying roller group, front visual detection subassembly, front light assembly, back visual detection subassembly, back light assembly, transmission visual detection subassembly and transmission light assembly, the front light assembly emits light to diaphragm front, and emits into front visual detection subassembly, the back light assembly emits light to diaphragm back, and emits into back visual detection subassembly, the transmission light assembly emits light to diaphragm, and emits into transmission visual detection subassembly, the utility model discloses through setting up front light assembly and front visual detection subassembly cooperation, back light assembly and back visual detection subassembly cooperation, transmission light assembly and transmission visual detection subassembly cooperation, can realize the front, back and transmission detection of diaphragm, overcome the problem that diaphragm surface is missed, misjudges, improves detection accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of measuring equipment technology, specifically relating to diaphragm detection devices, and more particularly to a three-station visual inspection device for diaphragm dot coating. Background Technology

[0002] As one of the core components of a battery, the separator needs to be precisely coated with a coating with PVDF (polyvinylidene fluoride) as the core component on both sides through a dot coating process to ensure the performance of the separator.

[0003] Currently, the diaphragm uses a single-sided inspection method, which is inefficient.

[0004] Meanwhile, the diaphragm surface has micron-sized PVDF coating dots, with a roughness (Ra) typically ranging from 0.2 to 0.5 μm, much higher than that of the base film (Ra < 0.1 μm). Since the PVDF coating dots are white or translucent, while the base film is milky white or transparent, their reflectivity in the visible light band is relatively small (typically only 5%-10%). When light is applied, the diaphragm surface produces strong diffuse reflection. After reflection and transmission on the diaphragm surface, the light cannot directly enter the camera, resulting in unclear imaging. This makes it impossible to accurately extract and identify the PVDF coating dots from the image, leading to missed or false detections.

[0005] Therefore, there is an urgent need to develop a new three-station visual inspection device for diaphragm dot coating to solve the technical problems of reflected light or light not being accurately directed to the camera when the existing equipment illuminates the diaphragm surface.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0007] This disclosure provides at least one three-station visual inspection device for diaphragm dot coating.

[0008] In a first aspect, embodiments of this disclosure provide a three-station visual inspection device for diaphragm dot coating, comprising: a conveyor roller assembly, a front visual inspection component, a front lighting component, a back visual inspection component, a back lighting component, a transmission visual inspection component, and a transmission lighting component; wherein the front visual inspection component and the front lighting component are disposed facing the front of the diaphragm on the conveyor roller assembly, the back visual inspection component and the back lighting component are disposed facing the back of the diaphragm on the conveyor roller assembly, and the transmission visual inspection component and the transmission lighting component are respectively located on both sides of the diaphragm; the front lighting component is adapted to emit light toward the front of the diaphragm, so that the light is reflected by the front of the diaphragm and then enters the front visual inspection component; the back lighting component is adapted to emit light toward the back of the diaphragm, so that the light is reflected by the back of the diaphragm and then enters the back visual inspection component; and the transmission lighting component is adapted to emit light toward the diaphragm, so that the light is transmitted through the diaphragm and then enters the transmission visual inspection component.

[0009] In one optional implementation, the frontal vision detection component includes: a plurality of first cameras; each of the first cameras is arranged sequentially and respectively facing the front of the diaphragm; each of the first cameras is adapted to receive an image of the diaphragm at the illuminated area.

[0010] In one optional embodiment, the front lighting component includes: a first linear scan LED light source; the first linear scan LED light source is adapted to emit light toward the front of the diaphragm so that the light is reflected by the front of the diaphragm and then enters the first camera.

[0011] In one optional implementation, the back-side vision detection component includes: a plurality of second cameras; each of the second cameras is arranged sequentially and respectively facing the back of the diaphragm; each of the second cameras receives an image of the diaphragm at the illuminated location.

[0012] In one optional embodiment, the back-lighting assembly includes: a second linear scan LED light source; the second linear scan LED light source is adapted to emit light toward the back of the diaphragm so that the light is reflected off the back of the diaphragm and then enters the second camera.

[0013] In one alternative embodiment, the transmission vision detection component includes: a plurality of third cameras; each of the third cameras is arranged sequentially and disposed facing one side of the diaphragm; each of the third cameras is adapted to receive an image of the diaphragm at the illuminated location.

[0014] In one optional embodiment, the transmission lighting assembly includes: a third linear scan LED light source; the third linear scan LED light source is adapted to emit light toward the diaphragm so that the light is transmitted through the diaphragm and directed toward the third camera.

[0015] In one optional embodiment, the diaphragm dot coating three-station visual inspection device further includes: a control module, a first adjustment component, a second adjustment component, and a third adjustment component; the first adjustment component, the second adjustment component, and the third adjustment component are rotatably connected to the front lighting component, the back lighting component, and the transmission lighting component, respectively; the first adjustment component, the second adjustment component, and the third adjustment component are electrically connected to the control module; the control module is configured to drive the first adjustment component, the second adjustment component, and the third adjustment component to drive the front lighting component, the back lighting component, and the transmission lighting component to rotate, until the light emitted by the front lighting component and the back lighting component is reflected by the diaphragm and then enters the front visual inspection component, the back visual inspection component, and the transmission lighting component, and the light emitted by the transmission lighting component is transmitted through the diaphragm and then enters the transmission visual inspection component.

[0016] In one optional embodiment, the first adjustment assembly includes: a first gearbox, a first drive motor, a first worm, a first worm wheel, a first gear set, and a first planetary gear set; the first drive motor is rotatably connected to the first worm, the first worm meshes with the first worm wheel, the first worm wheel is connected to the first gear set, the first gear set is connected to the first planetary gear set, and the first planetary gear set is rotatably connected to the first linear LED light source in the front lighting assembly; the first drive motor, the first worm, the first worm wheel, the first gear set, and the first planetary gear set are rotatably connected to the first gearbox; the first drive motor is connected to the control... The modules are electrically connected; the control module is configured to drive a first drive motor to rotate a first worm, a first worm wheel, a first gear set, and a first planetary gear set, thereby rotating the first linear LED light source, i.e., adjusting the direction of the light; the second adjustment component includes: a second gearbox, a second drive motor, a second worm, a second worm wheel, a second gear set, and a second planetary gear set; the second drive motor is rotatably connected to the second worm, the second worm meshes with the second worm wheel, the second worm wheel is connected to the second gear set, the second gear set is connected to the second planetary gear set, and the second planetary gear set is connected to the second linear LED light source in the backlight assembly. The second linear scanning LED light source is rotatably connected, and the second drive motor, second worm gear, second worm wheel, second gear set, second planetary gear set, and second gearbox are rotatably connected; the second drive motor is electrically connected to the control module; the control module is configured to drive the second drive motor to rotate the second worm gear, second worm wheel, second gear set, and second planetary gear set, thereby rotating the second linear scanning LED light source, i.e., adjusting the direction of the light; the third adjustment component includes: a third gearbox, a third drive motor, a third worm gear, a third worm wheel, a third gear set, and a third planetary gear set; the third drive motor is rotatably connected to the third worm gear. The third worm gear meshes with the third worm wheel, the third worm wheel is connected to the third gear set, the third gear set is connected to the third planetary gear set, and the third planetary gear set is rotatably connected to the third linear scanning LED light source in the transmission illumination assembly. The third drive motor, third worm gear, third worm wheel, third gear set, and third planetary gear set are rotatably connected to the third gearbox. The third drive motor is electrically connected to the control module. The control module is configured to drive the third drive motor to rotate the third worm gear, third worm wheel, third gear set, and third planetary gear set, thereby rotating the third linear scanning LED light source, i.e., adjusting the direction of the light.

[0017] The beneficial effects of this utility model are as follows: By setting the front lighting component to cooperate with the front visual inspection component, the back lighting component to cooperate with the back visual inspection component, and the transmission lighting component to cooperate with the transmission visual inspection component, this utility model can realize the front, back, and transmission inspection of the diaphragm, overcome the problems of missed detection and false detection on the diaphragm surface, and improve the detection accuracy. By adjusting the angles of the front lighting component, the back lighting component, and the transmission lighting component through the first adjustment component, the second adjustment component, and the third adjustment component, respectively, the direction of the light is adjusted, so that the light after reflection is accurately directed to the front visual inspection component, the back visual inspection component, and the transmission visual inspection component after transmission. This reduces the interference of reflection on the diaphragm surface by adjusting the angle of the light source, improves the contrast between the coating and the substrate, overcomes the problems of missed detection and false detection on the diaphragm surface, and improves the detection accuracy.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A structural diagram of a three-station visual inspection device for diaphragm dot coating provided in this embodiment of the present disclosure; Figure 2 A state diagram during diaphragm detection provided in an embodiment of this disclosure; Figure 3 This is a structural diagram of a conveyor roller assembly from one perspective, provided in an embodiment of the present disclosure. Figure 4 This is a structural diagram of a conveyor roller assembly from another perspective, provided as an embodiment of the present disclosure. Figure 5 A structural diagram of a first adjustment component provided in an embodiment of this disclosure; Figure 6 A structural diagram of a second adjustment component provided in an embodiment of this disclosure; Figure 7This is a structural diagram of a third adjustment component provided in an embodiment of the present disclosure.

[0022] In the picture: 1. Conveyor roller assembly; 2. Frontal visual inspection component; 21. First camera; 3. Front lighting assembly; 31. First line scan LED light source; 4. Rear-facing visual inspection component; 41. Second camera; 5. Rear lighting assembly; 51. Second line scan LED light source; 6. Transmission vision inspection component; 61. Third camera; 7. Transmitted lighting assembly; 71. Third-line scan LED light source; 8. First adjusting assembly; 81. First gearbox; 82. First drive motor; 83. First worm gear; 84. First worm wheel; 85. First gear set; 86. First planetary gear set; 9. Second adjustment assembly; 91. Second gearbox; 92. Second drive motor; 93. Second worm gear; 94. Second worm wheel; 95. Second gear set; 96. Second planetary gear set; 10. Third adjustment assembly; 101. Third gearbox; 102. Third drive motor; 103. Third worm gear; 104. Third worm wheel; 105. Third gear set; 106. Third planetary gear set; 11. Diaphragm; 111. Front side of diaphragm; 112. Back side of diaphragm. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed that the separator, as a core component of a battery, requires precise coating of PVDF (polyvinylidene fluoride) as its core component on both sides using a dot-coating process to ensure its performance. The separator surface contains micron-sized PVDF coating dots, with a roughness (Ra) typically ranging from 0.2 to 0.5 μm, significantly higher than that of the base film (Ra < 0.1 μm). Because the PVDF coating dots are white or semi-transparent, while the base film is milky white or transparent, their reflectivity in the visible light band is relatively small (typically only 5%-10%). When light is applied, the separator surface experiences strong diffuse reflection. After reflection and transmission, the light cannot directly enter the camera, resulting in unclear imaging. This makes it impossible to accurately extract and identify the PVDF coating dots from the image, leading to missed or false detections.

[0030] Based on the above research, this disclosure provides a three-station visual inspection device for diaphragm dot coating. By adjusting the angles of the front lighting component, the back lighting component, and the transmission lighting component through the first adjustment component, the second adjustment component, and the third adjustment component, respectively, the direction of the light is adjusted so that the reflected light is accurately directed to the front visual inspection component, the back visual inspection component, and the transmitted light is accurately directed to the transmission visual inspection component. This reduces the interference of reflection on the diaphragm surface by adjusting the angle of the light source, improves the contrast between the coating dots and the substrate, overcomes the problems of missed detection and false detection on the diaphragm surface, and improves the detection accuracy.

[0031] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] like Figures 1 to 7As shown, at least one embodiment provides a three-station visual inspection device for diaphragm dot coating, comprising: a control module, a conveyor roller group 1, a front visual inspection component 2, a front lighting component 3, a back visual inspection component 4, a back lighting component 5, a transmission visual inspection component 6, a transmission lighting component 7, a first adjustment component 8, a second adjustment component 9, and a third adjustment component 10; wherein the front visual inspection component 2 and the front lighting component 3 are disposed facing the front side 111 of the diaphragm on the conveyor roller group 1, the back visual inspection component 4 and the back lighting component 5 are disposed facing the back side 112 of the diaphragm on the conveyor roller group 1, the transmission visual inspection component 6 and the transmission lighting component 7 are respectively located on both sides of the diaphragm 11, and the first adjustment component 8, the second adjustment component 9, and the third adjustment component 10 are respectively connected to the front lighting component. Component 3, back lighting assembly 5, and transmission lighting assembly 7 are rotatably connected; the front visual detection assembly 2, front lighting assembly 3, back visual detection assembly 4, back lighting assembly 5, transmission visual detection assembly 6, transmission lighting assembly 7, first adjustment assembly 8, second adjustment assembly 9, and third adjustment assembly 10 are electrically connected to the control module; the control module is configured to drive the first adjustment assembly 8, second adjustment assembly 9, and third adjustment assembly 10 to respectively drive the front lighting assembly 3, back lighting assembly 5, and transmission lighting assembly 7 to rotate, until the light emitted by the front lighting assembly 3 and back lighting assembly 5 is reflected by the diaphragm 11 and enters the front visual detection assembly 2, back visual detection assembly 4, and the light emitted by the transmission lighting assembly 7 is transmitted through the diaphragm 11 and enters the transmission visual detection assembly 6.

[0035] In at least one embodiment, by configuring the front lighting component 3 to cooperate with the front visual inspection component 2, the back lighting component 5 to cooperate with the back visual inspection component 4, and the transmission lighting component 7 to cooperate with the transmission visual inspection component 6, the front, back, and transmission inspections of the diaphragm 11 can be achieved. By adjusting the angles of the front lighting component 3, the back lighting component 5, and the transmission lighting component 7 respectively by the first adjustment component 8, the second adjustment component 9, and the third adjustment component 10, the direction of the light is adjusted so that the light is accurately directed to the front visual inspection component 2 and the back visual inspection component 4 after reflection, and accurately directed to the transmission visual inspection component 6 after transmission. This reduces the interference of surface reflection on the diaphragm 11 by adjusting the angle of the light source, improves the contrast between the coating and the substrate, overcomes the problem of missed and false detections on the surface of the diaphragm 11, and improves the detection accuracy.

[0036] In at least one embodiment, please refer to Figure 1 The frontal visual detection component 2 includes: a plurality of first cameras 21; each of the first cameras 21 is arranged sequentially and is respectively disposed facing the front of the diaphragm 111, and each of the first cameras 21 is electrically connected to the control module; the control module is configured to receive images of the diaphragm 11 at the illumination point through each of the first cameras 21.

[0037] Specifically, the first camera 21 is a high-definition industrial camera (resolution not less than 8K).

[0038] Specifically, the first camera 21 is used to acquire images and send them to the control module for image recognition and processing.

[0039] Specifically, light is reflected by the front side 111 of the diaphragm and then enters the first camera 21. Due to the thickness of the diaphragm 11 and the presence of surface coatings, different directions of light will affect the clarity of the image in the first camera 21. By adjusting the direction of the light, the light can be reflected and then enter the first camera 21 directly, ensuring clear imaging and thus improving detection accuracy.

[0040] In at least one embodiment, please refer to Figure 4 The front lighting component 3 includes: a first line scan LED light source 31; the first line scan LED light source 31 is adapted to emit light toward the front surface 111 of the diaphragm so that the light is reflected by the front surface 111 of the diaphragm and then enters the front visual detection component 2.

[0041] Specifically, the rotation of the first line scan LED light source 31 can adjust the direction of the emitted light.

[0042] Specifically, the first line scan LED light source 31 is driven by the first adjustment component 8, and the first adjustment component 8 adjusts the rotation angle of the first line scan LED light source 31 in steps, which can improve the accuracy of the rotation angle of the first line scan LED light source 31, thereby improving the accuracy of the light direction adjustment.

[0043] In at least one embodiment, please refer to Figure 5 The first adjustment component 8 includes: a first gearbox 81, a first drive motor 82, a first worm 83, a first worm wheel 84, a first gear set 85, and a first planetary gear set 86; the first drive motor 82 is rotatably connected to the first worm 83, the first worm 83 meshes with the first worm wheel 84, the first worm wheel 84 is connected to the first gear set 85, the first gear set 85 is connected to the first planetary gear set 86, the first planetary gear set 86 is rotatably connected to the first linear LED light source 31, and the first drive motor 82, the first worm 83, the first worm wheel 84, the first gear set 85, and the first planetary gear set 86 are rotatably connected to the first gearbox 81; the first drive motor 82 is electrically connected to a control module; the control module is configured to drive the first drive motor 82 to rotate the first worm 83, the first worm wheel 84, the first gear set 85, and the first planetary gear set 86, thereby rotating the first linear LED light source 31, i.e., adjusting the direction of the light.

[0044] Specifically, the first gearbox 81 is used to rotatably mount the first worm 83, the first worm wheel 84, the first gear set 85, and the first planetary gear set 86.

[0045] Specifically, the first worm gear 83, the first worm wheel 84, the first gear set 85, and the first planetary gear set 86 are connected in sequence to enable step-by-step adjustment of the angle of the first linear scanning LED light source 31, thereby improving the accuracy of the light direction adjustment.

[0046] Specifically, the first drive motor 82 is a stepper motor, and the stepping is controlled by the control module.

[0047] Specifically, the first linear scanning LED light source 31 is driven by the first worm gear 83, the first worm wheel 84, the first gear set 85, and the first planetary gear set 86 to adjust its direction at one degree per second, which can ensure the accuracy of the light direction adjustment.

[0048] In at least one embodiment, please refer to Figure 2 The back-side visual detection component 4 includes: a plurality of second cameras 41; each of the second cameras 41 is arranged sequentially and is respectively disposed facing the back side 112 of the diaphragm, and each of the second cameras 41 is electrically connected to the control module; the control module is configured to receive images of the diaphragm 11 at the illumination point through each of the second cameras 41.

[0049] Specifically, the second camera 41 is a high-definition industrial camera (resolution not less than 8K).

[0050] Specifically, the function of the second camera 41 is to acquire images and send them to the control module for image recognition and processing.

[0051] Specifically, light is reflected off the back of the diaphragm 11 and then enters the second camera 41. Due to the thickness of the diaphragm 11 and the presence of surface coatings, different directions of light will affect the clarity of the image in the second camera 41. By adjusting the direction of the light, it is possible to make the light reflect and enter the second camera 41 directly, ensuring clear imaging and thus improving detection accuracy.

[0052] In one alternative implementation, please refer to Figure 3 The back-side lighting assembly 5 includes: a second line-scan LED light source 51; the second line-scan LED light source 51 is adapted to emit light toward the back side 112 of the diaphragm so that the light is reflected by the back side 112 of the diaphragm and then enters the back-side visual detection assembly 4.

[0053] Specifically, the second line scan LED light source 51 is driven by the second adjustment component 9. At the same time, the second adjustment component 9 adjusts the rotation angle of the second line scan LED light source 51 in steps, which can improve the accuracy of the rotation angle of the second line scan LED light source 51, thereby improving the accuracy of the light direction adjustment.

[0054] In at least one embodiment, please refer to Figure 6The second adjustment component 9 includes: a second gearbox 91, a second drive motor 92, a second worm 93, a second worm wheel 94, a second gear set 95, and a second planetary gear set 96; the second drive motor 92 is rotatably connected to the second worm 93, the second worm 93 meshes with the second worm wheel 94, the second worm wheel 94 is connected to the second gear set 95, the second gear set 95 is connected to the second planetary gear set 96, the second planetary gear set 96 is rotatably connected to the second linear LED light source 51, and the second drive motor 92, the second worm 93, the second worm wheel 94, the second gear set 95, and the second planetary gear set 96 are rotatably connected to the second gearbox 91; the second drive motor 92 is electrically connected to the control module; the control module is configured to drive the second drive motor 92 to rotate the second worm 93, the second worm wheel 94, the second gear set 95, and the second planetary gear set 96, thereby rotating the second linear LED light source 51, i.e., adjusting the direction of the light.

[0055] Specifically, the function of the second gearbox 91 is to rotatably mount the second worm 93, the second worm wheel 94, the second gear set 95, and the second planetary gear set 96.

[0056] Specifically, the second worm gear 93, the second worm wheel 94, the second gear set 95, and the second planetary gear set 96 are sequentially connected in a transmission manner, which can realize the angle step adjustment of the second linear scanning LED light source 51 and improve the accuracy of the light direction adjustment.

[0057] Specifically, the second drive motor 92 is a stepper motor, and its stepping is controlled by the control module.

[0058] Specifically, the second linear scanning LED light source 51 is driven by the second worm gear 93, the second worm wheel 94, the second gear set 95, and the second planetary gear set 96 to adjust its direction at one degree per second, which can ensure the accuracy of the light direction adjustment.

[0059] In at least one embodiment, please refer to Figure 4 The transmission vision detection component 6 includes a plurality of third cameras 61; the transmission lighting component 7 includes a third linear scanning LED light source 71; the third cameras 61 are arranged sequentially and are positioned facing one side of the diaphragm 11, and the third linear scanning LED light source 71 is positioned facing the other side of the diaphragm 11; each of the third cameras 61 is electrically connected to a control module; the third linear scanning LED light source 71 is adapted to emit light toward the diaphragm 11 so that the light is transmitted through the diaphragm 11 and then directed toward the third camera 61; the control module is configured to receive images of the diaphragm 11 at the lighting location through each of the third cameras 61.

[0060] Specifically, the third camera 61 is a high-definition industrial camera (resolution not less than 8K).

[0061] Specifically, the function of the third camera 61 is to acquire images and send them to the control module for image recognition and processing.

[0062] Specifically, the third line scan LED light source 71 is driven by the third adjustment component 10. At the same time, the third adjustment component 10 adjusts the rotation angle of the third line scan LED light source 71 in steps, which can improve the accuracy of the rotation angle of the third line scan LED light source 71, thereby improving the accuracy of the light direction adjustment.

[0063] Specifically, after light is transmitted through the diaphragm 11, it enters the third camera 61. Due to the thickness of the diaphragm 11 and the presence of surface coatings, different directions of light will affect the clarity of the image in the third camera 61. By adjusting the direction of the light, it is possible to make the light enter the third camera 61 directly after transmission, ensuring clear imaging and thus improving detection accuracy.

[0064] In at least one embodiment, please refer to Figure 7 The third adjustment assembly 10 includes: a third gearbox 101, a third drive motor 102, a third worm gear 103, a third worm wheel 104, a third gear set 105, and a third planetary gear set 106; the third drive motor 102 is rotatably connected to the third worm gear 103, the third worm gear 103 meshes with the third worm wheel 104, the third worm wheel 104 is connected to the third gear set 105, the third gear set 105 is connected to the third planetary gear set 106, and the third planetary gear set 106 is connected to the third linear scanning LED light... The source 71 is rotatably connected, and the third drive motor 102, the third worm gear 103, the third worm wheel 104, the third gear set 105, the third planetary gear set 106 and the third gearbox 101 are rotatably connected; the third drive motor 102 is electrically connected to the control module; the control module is configured to drive the third drive motor 102 to drive the third worm gear 103, the third worm wheel 104, the third gear set 105 and the third planetary gear set 106 to rotate, so as to drive the third linear scan LED light source 71 to rotate, that is, to adjust the direction of the light.

[0065] Specifically, the function of the third gearbox 101 is to rotatably mount the third worm gear 103, the third worm wheel 104, the third gear set 105, and the third planetary gear set 106.

[0066] Specifically, the third worm gear 103, the third worm wheel 104, the third gear set 105, and the third planetary gear set 106 are connected in sequence to enable step-by-step adjustment of the angle of the third linear scanning LED light source 71, thereby improving the accuracy of the light direction adjustment.

[0067] Specifically, the third drive motor 102 is a stepper motor, and the stepping is controlled by the control module.

[0068] Specifically, the third linear scanning LED light source 71 is driven by the third worm gear 103, the third worm wheel 104, the third gear set 105, and the third planetary gear set 106 to adjust its direction at one degree per second, which can ensure the accuracy of the light direction adjustment.

[0069] In summary, this utility model adjusts the angles of the front lighting component, the back lighting component, and the transmission lighting component by using the first adjustment component, the second adjustment component, and the third adjustment component, respectively, thereby adjusting the direction of the light. This ensures that the reflected light is accurately directed to the front visual inspection component, the back visual inspection component, and the transmitted light is accurately directed to the transmission visual inspection component. By adjusting the angle of the light source, it reduces the interference of reflection on the diaphragm surface, improves the contrast between the coating and the substrate, overcomes the problems of missed and false detections on the diaphragm surface, and improves the detection accuracy.

[0070] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0071] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0072] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0073] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0074] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A three-station visual inspection device for diaphragm dot coating, characterized in that, include: The conveyor roller assembly (1), the front visual inspection component (2), the front lighting component (3), the back visual inspection component (4), the back lighting component (5), the transmission visual inspection component (6), and the transmission lighting component (7); among which The front visual inspection component (2) and the front lighting component (3) are arranged facing the front side (111) of the diaphragm on the conveyor roller group (1), the back visual inspection component (4) and the back lighting component (5) are arranged facing the back side (112) of the diaphragm on the conveyor roller group (1), and the transmission visual inspection component (6) and the transmission lighting component (7) are located on both sides of the diaphragm (11). The front lighting component (3) is adapted to emit light toward the front side (111) of the diaphragm so that the light is reflected by the front side (111) of the diaphragm and then enters the front visual detection component (2). The back-lighting assembly (5) is adapted to emit light toward the back side of the diaphragm (112), so that the light is reflected by the back side of the diaphragm (112) and then enters the back-view vision detection assembly (4); and The transmission light-emitting component (7) is adapted to emit light into the diaphragm (11) so that the light is transmitted through the diaphragm (11) and then enters the transmission vision detection component (6).

2. The three-station visual inspection device for diaphragm dot coating as described in claim 1, characterized in that, The frontal vision detection component (2) includes: a plurality of first cameras (21); Each of the first cameras (21) is arranged sequentially and is respectively positioned facing the front side (111) of the diaphragm; Each of the first cameras (21) is adapted to receive an image of the diaphragm (11) at the illumination point.

3. The three-station visual inspection device for diaphragm dot coating as described in claim 2, characterized in that, The front lighting component (3) includes: a first line scan LED light source (31); The first linear scanning LED light source (31) is positioned facing the front side (111) of the diaphragm; The first linear scan LED light source (31) is adapted to emit light toward the front side of the diaphragm (111) so that the light is reflected by the front side of the diaphragm (111) and then enters the first camera (21).

4. The three-station visual inspection device for diaphragm dot coating as described in claim 1, characterized in that, The rear-facing visual inspection component (4) includes: a plurality of second cameras (41); Each of the second cameras (41) is arranged sequentially and is positioned facing the back of the diaphragm (112); Each of the second cameras (41) receives an image of the diaphragm (11) at the illumination point.

5. The three-station visual inspection device for diaphragm dot coating as described in claim 4, characterized in that, The back-lighting assembly (5) includes: a second line-scan LED light source (51); The second linear scan LED light source (51) is adapted to emit light toward the back of the diaphragm (112) so that the light is reflected by the back of the diaphragm (112) and then enters the second camera (41).

6. The three-station visual inspection device for diaphragm dot coating as described in claim 1, characterized in that, The transmission vision detection component (6) includes: a plurality of third cameras (61); Each of the third cameras (61) is arranged sequentially and positioned facing one side of the diaphragm (11); Each of the third cameras (61) is adapted to receive images of the diaphragm (11) at the illumination point.

7. The three-station visual inspection device for diaphragm dot coating as described in claim 6, characterized in that, The transmission lighting component (7) includes: a third line scan LED light source (71); The third linear scan LED light source (71) is adapted to emit light to the diaphragm (11) so that the light is transmitted through the diaphragm (11) and directed to the third camera (61).

8. The three-station visual inspection device for diaphragm dot coating as described in claim 1, characterized in that, Also includes: Control module, first adjustment component (8), second adjustment component (9) and third adjustment component (10); The first adjustment component (8), the second adjustment component (9), and the third adjustment component (10) are rotatably connected to the front lighting component (3), the back lighting component (5), and the transmission lighting component (7), respectively. The first adjustment component (8), the second adjustment component (9), and the third adjustment component (10) are electrically connected to the control module; The control module is configured to drive the first adjustment component (8), the second adjustment component (9), and the third adjustment component (10) to drive the front lighting component (3), the back lighting component (5), and the transmission lighting component (7) to rotate, until the light emitted by the front lighting component (3) and the back lighting component (5) is reflected by the diaphragm (11) and enters the front visual detection component (2), the back visual detection component (4), and the light emitted by the transmission lighting component (7) is transmitted through the diaphragm (11) and enters the transmission visual detection component (6).

9. The three-station visual inspection device for diaphragm dot coating as described in claim 8, characterized in that, The first adjustment assembly (8) includes: a first gearbox (81), a first drive motor (82), a first worm (83), a first worm wheel (84), a first gear set (85), and a first planetary gear set (86); The first drive motor (82) is rotatably connected to the first worm (83), the first worm (83) meshes with the first worm wheel (84), the first worm wheel (84) is connected to the first gear set (85), the first gear set (85) is connected to the first planetary gear set (86), the first planetary gear set (86) is rotatably connected to the first linear LED light source (31) in the front lighting assembly (3), and the first drive motor (82), the first worm (83), the first worm wheel (84), the first gear set (85), the first planetary gear set (86) are rotatably connected to the first gearbox (81); The first drive motor (82) is electrically connected to the control module; The control module is configured to drive the first drive motor (82) to drive the first worm (83), the first worm wheel (84), the first gear set (85), and the first planetary gear set (86) to rotate, so as to drive the first linear scan LED light source (31) to rotate, that is, to adjust the direction of the light; The second adjustment assembly (9) includes: a second gearbox (91), a second drive motor (92), a second worm (93), a second worm wheel (94), a second gear set (95), and a second planetary gear set (96); The second drive motor (92) is rotatably connected to the second worm (93), the second worm (93) meshes with the second worm wheel (94), the second worm wheel (94) is connected to the second gear set (95), the second gear set (95) is connected to the second planetary gear set (96), the second planetary gear set (96) is rotatably connected to the second linear LED light source (51) in the back lighting assembly (5), and the second drive motor (92), the second worm (93), the second worm wheel (94), the second gear set (95), the second planetary gear set (96) are rotatably connected to the second gearbox (91); The second drive motor (92) is electrically connected to the control module; The control module is configured to drive the second drive motor (92) to rotate the second worm (93), the second worm wheel (94), the second gear set (95), and the second planetary gear set (96) to drive the second linear scanning LED light source (51) to rotate, that is, to adjust the direction of the light; The third adjustment assembly (10) includes: a third gearbox (101), a third drive motor (102), a third worm (103), a third worm wheel (104), a third gear set (105), and a third planetary gear set (106). The third drive motor (102) is rotatably connected to the third worm (103), the third worm (103) meshes with the third worm wheel (104), the third worm wheel (104) is connected to the third gear set (105), the third gear set (105) is connected to the third planetary gear set (106), the third planetary gear set (106) is rotatably connected to the third linear LED light source (71) in the transmission lighting assembly (7), and the third drive motor (102), the third worm (103), the third worm wheel (104), the third gear set (105), the third planetary gear set (106) are rotatably connected to the third gearbox (101); The third drive motor (102) is electrically connected to the control module; The control module is configured to drive the third drive motor (102) to rotate the third worm (103), the third worm wheel (104), the third gear set (105), and the third planetary gear set (106) to drive the third linear scan LED light source (71) to rotate, that is, to adjust the direction of the light.

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