Aoi detection mechanism for membrane electrode production and detection equipment using the same

Abstract

This utility model belongs to the field of testing technology, specifically relating to hydrogen fuel cell-related testing, and particularly to an AOI testing mechanism and testing equipment used in membrane electrode production. The AOI testing mechanism includes: a flipping component for flipping the membrane electrode; and two sets of AOI testing components mirror-arranged on both sides of the flipping component, each performing AOI testing on both sides of the membrane electrode. Through the flipping component and the two sets of AOI testing components, this AOI testing mechanism and testing equipment for membrane electrode production can perform AOI testing on both sides of the membrane electrode after it has been peeled off in an automated production line, thereby maximizing the detection of minute defects, ensuring the consistency of the membrane electrode, and improving production yield.

Description

Technical Field

[0001] This utility model belongs to the field of testing technology, specifically relating to testing related to hydrogen fuel cells, and particularly to an AOI testing organization for membrane electrode production and testing equipment using it. Background Technology

[0002] The membrane electrode assembly (MEA) is the "heart" of a hydrogen fuel cell, a core component where electrochemical reactions occur. During production and transportation, the MEA is bonded to a transfer membrane. After hot pressing and membrane removal, AOI (Automated Optical Inspection) is required to ensure that the membrane removal process has not damaged the MEA, preventing any contaminants from entering the entire fuel cell stack.

[0003] On high-speed automated production lines, manual visual inspection is inefficient, inconsistent, and prone to fatigue. AOI (Automated Optical Inspection) can achieve 100% online, high-speed, and high-precision full inspection. Currently, there is no equipment on automated production lines to perform AOI inspection on both sides of the membrane electrode after the membrane has been torn off.

[0004] 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

[0005] This disclosure provides at least an AOI inspection organization for membrane electrode production and inspection equipment using the same.

[0006] In a first aspect, embodiments of this disclosure provide an AOI inspection mechanism for membrane electrode production, comprising: a flipping assembly for flipping the membrane electrode; and two sets of AOI inspection components, which are mirror-arranged on both sides of the flipping assembly, and the two sets of AOI inspection components respectively perform AOI inspection on both sides of the membrane electrode.

[0007] In one optional embodiment, the flipping assembly includes: a flipping suction plate for adsorbing and fixing the membrane electrode; a rotating shaft to which the flipping suction plate is fixedly connected; a rotating shaft servo motor for driving the rotating shaft; at least two flipping assembly mounting side plates, the rotating shaft being rotatably connected between the two flipping assembly mounting side plates, and the rotating shaft servo motor being connected to one of the two flipping assembly mounting side plates; the rotating shaft servo motor is used to drive the rotating shaft to rotate, and the rotating shaft is used to drive the flipping suction plate to flip.

[0008] In one optional embodiment, it further includes: a tray connected to the inner side of the mounting side plate of the flip assembly and located below the rotating shaft; and a buffer block connected to both sides of the upper end face of the tray, the buffer block being used to buffer the inertial force when the flip suction plate flips.

[0009] In one optional embodiment, the device further includes: a pivot positioning plate connected to the end of the pivot shaft away from the pivot servo motor; and a plurality of photoelectric switches connected to the mounting side plate of the flip assembly, the plurality of photoelectric switches being circumferentially distributed on the pivot positioning plate; the pivot positioning plate is used to rotate and block the photoelectric switches to achieve control over them.

[0010] In one optional embodiment, the AOI detection assembly includes: a plurality of AOI cameras for detecting membrane electrodes; and an AOI camera mounting bracket on which the plurality of AOI cameras are arranged side by side.

[0011] In one optional embodiment, the AOI detection component further includes: a first slide module and a first linear guide rail arranged parallel to the first slide module, the AOI camera mounting bracket being connected to the first slide module and the first linear guide rail, the first slide module and the first linear guide rail being used to drive the AOI camera mounting bracket to translate along the X-axis.

[0012] In one optional embodiment, the AOI detection assembly further includes: a second linear guide rail, wherein the AOI camera is connected to a slider of the second linear guide rail; and a second linear guide rail locking post, wherein the second linear guide rail locking post is threaded through the slider of the second linear guide rail and its end abuts against the guide rail of the second linear guide rail.

[0013] Secondly, embodiments of this disclosure also provide a testing device, including: an AOI testing mechanism for membrane electrode production as described above; a feed belt for moving the membrane electrode toward the flipping assembly and a set of the AOI testing components; and an discharge belt for moving the membrane electrode away from the flipping assembly and another set of the AOI testing components.

[0014] In one optional embodiment, a transfer mechanism is further included, comprising: a transfer suction plate for adsorbing the membrane electrode; a second slide module, the transfer suction plate being connected to the second slide module, the second slide module being used to drive the transfer suction plate to perform Z-axis displacement; a third slide module, the second slide module being connected to the third slide module, the third slide module being used to drive the second slide module to perform Y-axis displacement; and a fourth slide module, the third slide module being connected to the fourth slide module, the fourth slide module being used to drive the third slide module to perform X-axis displacement.

[0015] In one optional embodiment, it further includes: an adapter plate connected to the bottom of the second slide module; and a plurality of spring screws, the adapter plate being connected to the transfer suction plate via the plurality of spring screws.

[0016] The beneficial effects of this utility model are that the AOI inspection mechanism for membrane electrode production and the inspection equipment using it, through the flipping component and two sets of AOI inspection components, can perform AOI inspection on both sides of the membrane electrode after the membrane is torn off in an automated production line, thereby maximizing the detection of minute defects, ensuring the consistency of the membrane electrode, and improving the production yield.

[0017] 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, claims, and drawings.

[0018] 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

[0019] 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.

[0020] Figure 1 A perspective view of an AOI inspection mechanism for membrane electrode production provided in an embodiment of this disclosure; Figure 2 for Figure 1 Rear-view 3D view of the flip-up component; Figure 3 for Figure 2 Enlarged view of A in the middle; Figure 4 for Figure 1 A 3D view of the AOI detection component in China; Figure 5 A perspective view of a detection device provided in an embodiment of this disclosure; Figure 6 for Figure 5 A three-dimensional view of the transfer mechanism.

[0021] In the picture: Flip assembly 1, flip suction plate 11, rotating shaft 12, rotating shaft positioning plate 121, photoelectric switch 122, rotating shaft servo motor 13, flip assembly mounting side plate 14, tray 141, buffer block 142. AOI inspection component 2, AOI camera 21, AOI camera mounting bracket 22, first slide module 23, first linear guide rail 24, second linear guide rail 25, second linear guide rail locking post 26. Feed belt 3, discharge belt 4 Transfer mechanism 5, transfer suction plate 51, second slide module 52, third slide module 53, fourth slide module 54, adapter plate 521, spring screw 522. Detailed Implementation

[0022] 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.

[0023] Research has revealed that there are currently no patented devices on automated production lines that are compatible with double-sided AOI inspection of membrane electrodes after film removal.

[0024] Based on the above research, this disclosure provides an AOI inspection mechanism for the production of membrane electrodes and an inspection device using the same. By using a flipping component and two sets of AOI inspection components, both sides of the membrane electrode can be inspected simultaneously in an automated production line, thereby maximizing the detection of minute defects, ensuring the consistency of the membrane electrode, and improving the production yield.

[0025] The shortcomings of the above solutions are the result of the inventors' practical experience 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 inventors to this disclosure.

[0026] 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.

[0027] 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.

[0028] See Figure 1 , Figure 1 An AOI inspection mechanism for membrane electrode production is shown, comprising: a flipping component 1 for flipping the membrane electrode; and two sets of AOI inspection components 2, which are mirror images of each other on both sides of the flipping component 1, and perform AOI inspection on both sides of the membrane electrode respectively.

[0029] In short, in this embodiment, the two sets of AOI detection components 2 are located on the left and right sides of the flipping component 1, respectively. One set of AOI detection components 2 first detects one side of the membrane electrode after the membrane is torn, and then the flipping component 1 flips the membrane electrode 180°. The other set of AOI detection components 2 detects the other side of the membrane electrode.

[0030] See Figure 2 In some embodiments, the flipping assembly 1 includes: a flipping suction plate 11 for adsorbing and fixing the membrane electrode; a rotating shaft 12, to which the flipping suction plate 11 is fixedly connected; a rotating shaft servo motor 13 for driving the rotating shaft 12; at least two flipping assembly mounting side plates 14, with the rotating shaft 12 rotatably connected between the two flipping assembly mounting side plates 14, and the rotating shaft servo motor 13 connected to one of the two flipping assembly mounting side plates 14; the rotating shaft servo motor 13 is used to drive the rotating shaft 12 to rotate, and the rotating shaft 12 is used to drive the flipping suction plate 11 to flip.

[0031] In short, the shaft servo motor 13 provides rotational power, driving the shaft 12 to rotate via a coupling (not marked in the figure); the shaft 12 is rotatably connected between the two tilting assembly mounting plates 14 via bearings (not marked in the figure). Figure 1 As shown, in order to maintain the stability of the rotation of the shaft 12, the bottom of the two flip assembly mounting side plates 14 can be further fixed by corresponding connecting plates and reinforcing ribs (not marked in the figure).

[0032] The previous film-tearing station transports the torn membrane electrode to the initial position of the flip-over suction plate 11. The flip-over suction plate 11 adsorbs and fixes the torn membrane electrode, and one set of AOI detection components 2 first performs AOI detection on one side of the torn membrane electrode. Then, the rotary shaft servo motor 13 drives the rotary shaft 12 to rotate via a coupling (not marked in the figure). After the rotary shaft 12 rotates 180°, the flip-over suction plate 11 connected to the rotary shaft 12 also rotates 180°. At this time, the flip-over suction plate 11 releases the membrane electrode, placing it below another set of AOI detection components 2. Then the flip-over suction plate 11 returns to the initial position to await the next membrane electrode to be tested, while the other set of AOI detection components 2 performs AOI detection on the other side of the membrane electrode.

[0033] See Figure 2 In some embodiments, it further includes: a tray 141, which is connected to the inner side of the mounting side plate 14 of the flip assembly and located below the rotating shaft 12; and a buffer block 142, which is connected to both sides of the upper end face of the tray 141 and is used to buffer the inertial force when the flip suction plate 11 flips.

[0034] In short, the buffer block 142 can be, but is not limited to, made of urethane. Its upper surface should be on the same horizontal plane as the corresponding contact surface of the flipping suction plate 11 when it is flipped. It provides sufficient buffering force to buffer the inertial force of the flipping suction plate 11 when it is flipped, and prevents the flipping suction plate 11 from being flipped too much, which could lead to damage to the membrane electrode by impact.

[0035] See Figure 2 In some embodiments, the device further includes: a pivot positioning plate 121, which is connected to the end of the pivot 12 away from the pivot servo motor 13; a plurality of photoelectric switches 122, which are connected to the mounting side plate 14 of the flip assembly, and the plurality of photoelectric switches 122 are circumferentially distributed on the pivot positioning plate 121; the pivot positioning plate 121 is used to rotate and block the photoelectric switches 122 to achieve control over them.

[0036] In short, taking two photoelectric switches 122 as an example, the two photoelectric switches 122 are located on the left and right sides of the rotating shaft positioning plate 121. When the rotating shaft 12 rotates 180° back and forth, it will cause the rotating shaft positioning plate 121 to block one of the two photoelectric switches 122. Blocking once on each side indicates that the flip suction plate 11 has driven the membrane electrode to perform double-sided AOI detection, so that the tested membrane electrodes can be counted and statistically analyzed.

[0037] See Figure 3 In some embodiments, the AOI detection component 2 includes: a plurality of AOI cameras 21 for detecting membrane electrodes; and an AOI camera mounting bracket 22 on which the plurality of AOI cameras 21 are arranged side by side.

[0038] Understandably, if there is only one AOI camera 21, when the membrane electrode is relatively large, the camera cannot detect it completely. It needs to be used with a sliding stage module along the Y-axis to move the AOI camera 21 back and forth along the Y-axis, which will increase the detection time. However, multiple AOI cameras 21, such as the five in the figure, can meet the usage requirements of the AOI camera 21 in the Y-axis direction and can detect the membrane electrode simultaneously, thus improving the detection efficiency.

[0039] See Figure 3 In some embodiments, the AOI detection component 2 further includes: a first slide module 23 and a first linear guide rail 24 arranged parallel to the first slide module 23. The AOI camera mounting bracket 22 is connected to the first slide module 23 and the first linear guide rail 24. The first slide module 23 and the first linear guide rail 24 are used to drive the AOI camera mounting bracket 22 to translate along the X-axis.

[0040] In short, in order to meet the usage requirements of the AOI camera 21 in the X-axis direction, a first sliding stage module 23 and a first linear guide rail 24 are set up in parallel to drive the AOI camera mounting bracket 22 and the multiple AOI cameras 21 on it to translate along the X-axis.

[0041] See Figure 3 In some embodiments, the AOI detection assembly 2 further includes: a second linear guide 25, to which the AOI camera 21 is connected; and a second linear guide locking post 26, which is threaded through the slider of the second linear guide 25 and has its end abut against the guide rail of the second linear guide 25.

[0042] The existing linear guide rail includes two important components: a slider and a guide rail. These will not be described in detail here, and are therefore not marked in the diagram. This should not affect the understanding of those skilled in the art. The second linear guide rail locking pin 26 is threadedly connected to the slider of the second linear guide rail 25, and the second linear guide rail locking pin 26 can pass through the slider of the second linear guide rail 25 and contact the guide rail of the second linear guide rail 25. In this embodiment, the position of the AOI camera 21 in the Z-axis can be adjusted slightly in advance as needed. In use, unscrew the second linear guide rail locking pin 26, move the slider of the second linear guide rail 25, and adjust the AOI camera 21 to a suitable position. Then, tighten the second linear guide rail locking pin 26 until it abuts against the guide rail of the second linear guide rail 25. At this point, the slider of the second linear guide rail 25 and the guide rail of the second linear guide rail 25 are fixed in position.

[0043] See Figure 4At least one embodiment also provides a detection device, including: an AOI detection mechanism for membrane electrode production as described above; a feed belt 3 for moving the membrane electrode toward a flipping assembly 1 and a set of AOI detection components 2; and a discharge belt 4 for moving the membrane electrode away from the flipping assembly 1 and another set of AOI detection components 2.

[0044] Both the feed belt 3 and the discharge belt 4 are motor-driven belt transmission mechanisms. The motors, frames, etc. used are considered to be existing technology and will not be described in detail here. This should not affect the understanding of those skilled in the art.

[0045] See Figure 5 In some embodiments, a transfer mechanism 5 is further included, comprising: a transfer suction plate 51 for adsorbing the membrane electrode; a second slide module 52, the transfer suction plate 51 being connected to the second slide module 52, the second slide module 52 being used to drive the transfer suction plate 51 to perform Z-axis displacement; a third slide module 53, the second slide module 52 being connected to the third slide module 53, the third slide module 53 being used to drive the second slide module 52 to perform Y-axis displacement; and a fourth slide module 54, the third slide module 53 being connected to the fourth slide module 54, the fourth slide module 54 being used to drive the third slide module 53 to perform X-axis displacement.

[0046] In short, to ensure more precise transfer of the membrane electrode to the flipping suction plate 11 of the flipping assembly 1, a dedicated transfer mechanism 5 is used to transfer the membrane electrode from the feed belt 3 to the flipping suction plate 11. When the feed belt 3 brings the membrane electrode close to the flipping assembly 1, the Y-axis displacement of the third slide module 53 and the X-axis displacement of the fourth slide module 54 work together to move the second slide module 52 and its connected transfer suction plate 51 above the membrane electrode. The second slide module 52 lowers the transfer suction plate 51 to adsorb the membrane electrode, and then raises it to a certain height. Then, the X-axis displacement of the fourth slide module 54 moves the transfer suction plate 51 directly above the flipping suction plate 11. Next, the second slide module 52 lowers the transfer suction plate 51, releasing the membrane electrode to the flipping suction plate 11, which then adsorbs and fixes the membrane electrode. Finally, an AOI inspection assembly 2 first inspects one side of the membrane electrode after it has been peeled off. Next, the flipping assembly 1 flips the membrane electrode 180°, and another AOI inspection assembly 2 inspects the other side of the membrane electrode. After the inspection is completed, the membrane electrode is transferred to the next station by the discharge conveyor belt 4.

[0047] See Figure 5 In some embodiments, it further includes: an adapter plate 521 connected to the bottom of the second slide module 52; and a plurality of spring screws 522, the adapter plate 521 being connected to the transfer suction plate 51 via the plurality of spring screws 522.

[0048] In short, to ensure that the transfer plate 51 can more smoothly adsorb the membrane electrode, multiple spring screws 522 are provided (four are shown in the figure, but the specific number can be adjusted as needed). When the transfer plate 51 contacts the membrane electrode, the multiple spring screws 522 synchronously buffer the stress when the transfer plate 51 contacts the membrane electrode, effectively preventing the membrane electrode from being damaged by pressure.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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. An AOI inspection mechanism for membrane electrode production, characterized in that, include: A flipping assembly (1) is used to flip the membrane electrode; Two sets of AOI detection components (2) are arranged mirror images on both sides of the flipping component (1), and the two sets of AOI detection components (2) respectively perform AOI detection on both sides of the membrane electrode.

2. The AOI inspection mechanism for membrane electrode production as described in claim 1, characterized in that, The flipping component (1) includes: The flip-up suction plate (11) is used to adsorb and fix the membrane electrode; The rotating shaft (12) and the flip suction plate (11) are fixedly connected to the rotating shaft (12). A rotating shaft servo motor (13) drives and connects to the rotating shaft (12). At least two flip assembly mounting side plates (14) are provided, the rotating shaft (12) is rotatably connected between the two flip assembly mounting side plates (14), and the rotating shaft servo motor (13) is connected to one of the two flip assembly mounting side plates (14); The rotating shaft servo motor (13) is used to drive the rotating shaft (12) to rotate, and the rotating shaft (12) is used to drive the flipping suction plate (11) to flip.

3. The AOI inspection mechanism for membrane electrode production as described in claim 2, characterized in that, Also includes: A tray (141) is connected to the inner side of the mounting side plate (14) of the flip assembly and is located below the pivot (12); Buffer block (142) is connected to both sides of the upper end face of the tray (141). The buffer block (142) is used to buffer the inertial force when the flip suction plate (11) flips.

4. The AOI inspection mechanism for membrane electrode production as described in claim 2, characterized in that, Also includes: A pivot positioning plate (121) is connected to the end of the pivot (12) away from the pivot servo motor (13); Multiple photoelectric switches (122) are connected to the mounting side plate (14) of the flip assembly, and the multiple photoelectric switches (122) are circumferentially distributed on the rotating shaft positioning plate (121). The rotating positioning piece (121) is used to rotate and block the photoelectric switch (122) to achieve control over it.

5. The AOI inspection mechanism for membrane electrode production as described in claim 1, characterized in that, The AOI detection component (2) includes: Multiple AOI cameras (21) are used to detect membrane electrodes; An AOI camera mounting bracket (22) is provided, on which multiple AOI cameras (21) are arranged side by side.

6. The AOI inspection mechanism for membrane electrode production as described in claim 5, characterized in that, The AOI detection component (2) also includes: First slide module (23), and A first linear guide (24) is arranged parallel to the first slide module (23). The AOI camera mounting bracket (22) is connected to the first slide module (23) and the first linear guide rail (24). The first slide module (23) and the first linear guide (24) are used to drive the AOI camera mounting bracket (22) to translate along the X-axis.

7. The AOI inspection mechanism for membrane electrode production as described in claim 5, characterized in that, The AOI detection component (2) also includes: The second linear guide (25) is connected to the slider of the AOI camera (21); The second linear guide locking pin (26) is used to thread through the slider of the second linear guide (25) and make its end abut against the guide rail of the second linear guide (25).

8. A testing device, characterized in that, include: AOI inspection apparatus for membrane electrode production as described in any one of claims 1-7; Feed belt (3) is used to move the membrane electrode toward the flipping assembly (1) and a set of AOI detection assemblies (2). The discharge belt (4) is used to move the membrane electrode away from the flipping assembly (1) and another set of the AOI detection assemblies (2).

9. The detection device as described in claim 8, characterized in that... , It also includes a transfer mechanism (5), which comprises: Transfer plate (51), the transfer plate (51) is used to adsorb membrane electrode; The second slide module (52) is connected to the transfer suction plate (51), and the second slide module (52) is used to drive the transfer suction plate (51) to perform Z-axis displacement. The third slide module (53) is connected to the second slide module (52), and the third slide module (53) is used to drive the second slide module (52) to perform Y-axis displacement. The fourth slide module (54) is connected to the third slide module (53), and the fourth slide module (54) is used to drive the third slide module (53) to perform X-axis displacement.

10. The detection device as described in claim 9, characterized in that... , Also includes: Adapter plate (521), the adapter plate (521) is connected to the bottom of the second slide module (52); Multiple spring screws (522) are used to connect the adapter plate (521) to the transfer suction plate (51).

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