Appearance detection device for explosion-proof valve

Abstract

The utility model discloses an appearance detection device for an explosion-proof valve. The appearance detection device comprises a lighting module, an imaging module and a control module, the lighting module comprises a first angle light source and a second angle light source which are arranged in the first direction. The height of the first angle light source is adjustable in the first direction so that emergent light of the first angle light source can be converged to the anti-explosion valve film. The height of the second angle light source is adjustable in the first direction so that emergent light of the second angle light source can be converged to the anti-explosion valve metal foil. And the control module is in communication connection with the imaging module and is used for judging whether the electrolyte is located on the surface of the explosion-proof valve film and the surface of the explosion-proof valve metal foil according to the imaging image of the imaging module. According to the technical scheme, the first angle light source and the second angle light source are arranged in the appearance detection device to judge the position of the electrolyte, so that the detection functionality and accuracy of the appearance detection device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical detection, in particular to an appearance detection device for an explosion-proof valve. Background Art

[0002] With the rapid development of the new energy industry, especially the increasing demand for new energy electric vehicles, the demand for batteries is also increasing. In recent years, spontaneous combustion of electric vehicle batteries has occurred from time to time, and major manufacturers have become more and more stringent in their requirements for battery quality. During the preparation process of the battery, some surface defects may occur, such as surface scratches, pits, electrolyte contamination, etc. The explosion-proof valve is an especially important part of the battery, and its surface defects may cause safety hazards. Common types of surface defects of explosion-proof valves include: scratches on polypropylene film, damage to polypropylene film, missing polypropylene film, dents on aluminum foil, bumps on aluminum foil, electrolyte contamination, and foreign matter in the electrolyte.

[0003] Most of the existing explosion-proof valve surface defect detection pursues uniform lighting to clearly observe various positions on the surface of the explosion-proof valve. However, in the case of some electrolyte defects, it is necessary to determine the specific position of the electrolyte, that is, whether it is on the film or under the film of the polypropylene film. The uniform lighting solution has certain limitations for this type of defect, so that the specific position of the electrolyte cannot be distinguished. Utility Model Content

[0004] The utility model provides an appearance detection device for explosion-proof valves, which solves the problem that the uniform lighting scheme in the prior art cannot determine the specific position of the electrolyte in the electrolyte defect.

[0005] According to the utility model, a device for detecting the appearance of an explosion-proof valve is provided, wherein

[0006] The appearance detection device includes: a lighting module, an imaging module and a control module;

[0007] The lighting module includes a first angle light source and a second angle light source arranged along a first direction, wherein the angle between the maximum light emitting angle of the first angle light source and the first direction is different from the angle between the maximum light emitting angle of the second angle light source and the first direction; the first angle light source is height-adjustable along the first direction so that the emitted light of the first angle light source converges onto the explosion-proof valve film; the second angle light source is height-adjustable along the first direction so that the emitted light of the second angle light source converges onto the explosion-proof valve metal foil;

[0008] The imaging module is used to image the surface of the explosion-proof valve film according to the outgoing light of the first angle light source, and to image the surface of the explosion-proof valve metal foil according to the outgoing light of the second angle light source;

[0009] The control module is in communication connection with the imaging module and is used for judging whether the electrolyte is located on the surface of the explosion-proof valve film and on the surface of the explosion-proof valve metal foil according to the imaging image of the imaging module.

[0010] Optionally, the angle between the maximum light emitting angle of the first angle light source and the first direction is smaller than the angle between the maximum light emitting angle of the second angle light source and the first direction.

[0011] Optionally, the first angle light source is arranged on a side of the second angle light source away from the explosion-proof valve.

[0012] Optionally, the lighting module further includes a third angle light source, and the light color of the third angle light source is different from that of the first angle light source;

[0013] The angle between the maximum light output angle of the second angle light source and the first direction is different from the angle between the main optical axis of the third angle light source and the first direction; and the height of the third angle light source is adjustable along the first direction so that the output light of the third angle light source converges on the explosion-proof valve film.

[0014] Optionally, the lighting module further includes a collimated light source;

[0015] The main optical axis of the collimated light source is parallel to the first direction and is used to illuminate the surface of the explosion-proof valve.

[0016] Optionally, the first angle light source and the second angle light source are both annular light sources.

[0017] Optionally, the appearance inspection device further includes a fixed support unit and a sliding unit;

[0018] The sliding unit is fixedly connected to the fixed support unit;

[0019] The sliding unit comprises a rotating screw, a sliding track, a supporting plate and a rotating handle;

[0020] One end of the rotating screw is fixedly connected to the rotating handle, and the other end away from the rotating handle is fixedly connected to the support plate;

[0021] The support plate is fixedly connected to the imaging module and the lighting module respectively, and is slidably connected to the sliding track; the support plate can slide on the sliding track along a first direction.

[0022] Optionally, the appearance detection device further includes a motor, the motor is communicatively connected to the control module, and the motor is also fixedly connected to the support plate;

[0023] The control module is also used to control the support plate to slide on the sliding track by controlling the working state of the motor.

[0024] Optionally, the explosion-proof valve appearance inspection device further includes a fixing plate; the lighting module is fixedly connected to the sliding unit via the fixing plate; the imaging module is fixedly connected to the sliding unit via the fixing plate;

[0025] The fixing plate includes a plurality of groups of lighting fixing through holes of different heights and a plurality of groups of imaging fixing through holes of different heights;

[0026] The lighting module includes a lighting fastener adapted to the lighting fixing through hole, and the imaging module includes a camera fastener adapted to the imaging fixing through hole;

[0027] The lighting fastener is pluggable and connected to the lighting fixing through hole, and the camera fastener is pluggable and connected to the imaging fixing through hole.

[0028] Optionally, the multiple groups of lighting fixed through holes with different heights include multiple groups of first angle fixed through holes with different heights and multiple groups of second angle fixed through holes with different heights; the distance between the first angle fixed through holes and the explosion-proof valve is greater than the distance between the second angle fixed through holes and the explosion-proof valve;

[0029] The first angle light source includes a first angle fastener, and the second angle light source includes a second angle fastener;

[0030] The first angle fastener is pluggable connected to the first angle fixing through hole, and the second angle fastener is pluggable connected to the second angle fixing through hole.

[0031] The technical solution of the utility model is to set a first angle light source, a second angle light source, an imaging module and a control module in the appearance detection device of the explosion-proof valve, and to control the heights of the first angle light source and the second angle light source, so as to respectively converge the first angle light source on the film and converge the second angle light source on the metal foil, and to judge whether the electrolyte is located on the surface of the film and on the surface of the metal foil through the imaging image of the imaging module, so as to accurately judge the position of the electrolyte and improve the functionality and accuracy of the detection of the appearance detection device.

[0032] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 It is a front structural schematic diagram of an appearance detection device for explosion-proof valves provided according to an embodiment of the utility model;

[0035] Figure 2It is a schematic diagram of the appearance detection principle of an explosion-proof valve provided according to an embodiment of the utility model;

[0036] Figure 3 It is a schematic diagram of the appearance detection principle of an explosion-proof valve provided according to an embodiment of the utility model;

[0037] Figure 4 It is a side structural schematic diagram of an appearance detection device for an explosion-proof valve provided according to an embodiment of the utility model.

[0038] Figure 5 It is a partially enlarged structural schematic diagram of an appearance detection device for an explosion-proof valve provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0041] Figure 1 It is a front structural schematic diagram of an appearance detection device for explosion-proof valves provided according to an embodiment of the utility model. Figure 2 This is a schematic diagram of the appearance detection principle of an explosion-proof valve provided according to an embodiment of the utility model. Figure 1 and Figure 2 As shown,

[0042] The appearance detection device includes: a lighting module 21, an imaging module 22 and a control module;

[0043] The lighting module 21 includes a first angle light source 211 and a second angle light source 212 arranged along a first direction x, and the angle between the maximum light output angle of the first angle light source 211 and the first direction x and the angle between the maximum light output angle of the second angle light source 212 and the first direction x are different; the first angle light source 211 is height-adjustable along the first direction x so that the output light of the first angle light source 211 converges onto the explosion-proof valve film 12; the second angle light source 212 is height-adjustable along the first direction x so that the output light of the second angle light source 212 converges onto the explosion-proof valve metal foil 11;

[0044] The imaging module 22 is used to image the surface of the explosion-proof valve film 12 according to the emitted light of the first angle light source 211, and to image the surface of the explosion-proof valve metal foil 11 according to the emitted light of the second angle light source 212;

[0045] The control module is in communication with the imaging module 22 and is used to determine whether the electrolyte is located on the surface of the explosion-proof valve film 12 and the surface of the explosion-proof valve metal foil 11 according to the imaging image of the imaging module 22 .

[0046] Among them, the common appearance defects of explosion-proof valves in the prior art include scratches, damage and missing of the explosion-proof valve film 12, depressions and convex spots of the explosion-proof valve metal foil 11, electrolyte contamination and foreign matter, etc. Therefore, a uniform lighting method is adopted in the appearance detection device to evenly illuminate the entire surface of the explosion-proof valve. However, in the process of determining the location of the electrolyte defect, the uniform lighting method cannot determine whether the electrolyte is on the surface of the explosion-proof valve film 12 or on the surface of the explosion-proof valve metal foil 11. Therefore, the appearance detection device in the embodiment of the utility model includes: a lighting module 21, an imaging module 22 and a control module; the lighting module 21 includes a first angle light source 211 and a second angle light source 212 arranged along the x direction. The first direction x can be the arrangement direction of the explosion-proof valve film 12 and the explosion-proof valve metal foil 11.

[0047] The lighting module 21 can be used to fill in the light for the imaging module 22, and the imaging of the imaging module 22 is different when the light angles are different. The lighting module 21 includes a first angle light source 211 and a second angle light source 212, which are arranged along the x direction, and the first angle light source 211 can be moved along the x direction, and the outgoing light of the first angle light source 211 can be focused on the explosion-proof valve film 12 by moving the first angle light source 211; the second angle light source 212 can also be moved along the x direction, and the outgoing light of the second angle light source 212 can be focused on the explosion-proof valve metal foil 11 by moving the second angle light source 212. The maximum light emitting angle of the first angle light source 211 and the maximum light emitting angle of the second angle light source 212 are different, and the convergence point of the outgoing light is also different, so that the imaging image of the imaging module 22 under the irradiation of the first angle light source 211 and the second angle light source 212 is also different, so as to distinguish the imaging image of the first angle light source 211 from the imaging image of the second angle light source 212.

[0048] It can be understood that the light emitting angles of the first angle light source 211 and the second angle light source 212 are different, so that the imaging images of the imaging module 22 under the first angle light source 211 and the second angle light source 212 are different, so as to distinguish the imaging image under the first angle light source 211 and the imaging image under the second angle light source 212; the first angle light source 211 is adjustable along the x direction, so that the emitted light of the first angle light source 211 can be converged on the explosion-proof valve film 12, and the second angle light source 212 is adjustable along the x direction, so that the emitted light of the second angle light source 212 can be converged on the explosion-proof valve metal foil 11.

[0049] Among them, since the position where the electrolyte is located will reflect light after being illuminated and the angle of the reflected light from the electrolyte is different from the angle of the reflected light from the explosion-proof valve film and the angle of the reflected light from the explosion-proof valve metal foil, it is possible to judge whether there is electrolyte on the explosion-proof valve film 12 based on the different reflected light conditions in different areas of the imaging image where the outgoing light from the first angle light source 211 converges on the explosion-proof valve film 12; it is possible to judge whether there is electrolyte on the explosion-proof valve metal foil 11 based on the different reflected light conditions in different areas of the imaging image where the outgoing light from the second angle light source 212 converges on the explosion-proof valve metal foil 11.

[0050] Among them, the control module is communicatively connected with the imaging module 22, and can determine whether the imaging image is imaged by the first angle light source 211 or the second angle light source 212 according to the imaging image of the imaging module 22, and further determine whether the electrolyte is located on the surface of the explosion-proof valve film 12 and whether it is located on the surface of the explosion-proof valve metal foil 11.

[0051] The technical solution of the embodiment of the utility model is to set a first angle light source, a second angle light source, an imaging module and a control module in the appearance detection device of the explosion-proof valve, and to control the heights of the first angle light source and the second angle light source, so as to respectively converge the first angle light source on the explosion-proof valve film and converge the second angle light source on the explosion-proof valve metal foil, and to judge whether the electrolyte is located on the surface of the explosion-proof valve film and whether it is located on the surface of the explosion-proof valve metal foil through the imaging image of the imaging module, so as to accurately determine the position of the electrolyte and improve the functionality and accuracy of the appearance detection device.

[0052] Optional, continue to refer to Figure 1 and Figure 2 As shown, the angle between the maximum light emitting angle of the first angle light source 211 and the first direction x is smaller than the angle between the maximum light emitting angle of the second angle light source 212 and the first direction x.

[0053] The angle between the maximum light-emitting angle of the first angle light source 211 and the x-direction is set to be smaller than the angle between the maximum light-emitting angle of the second angle light source 212 and the x-direction, so that the emitted light of the first angle light source converges on the surface of the explosion-proof valve film 12, and the emitted light of the second angle light source converges on the surface of the explosion-proof valve metal foil 11. It can be understood that since the explosion-proof valve film 12 and the explosion-proof valve metal foil 11 are arranged along the x-direction, the first angle light source 211 and the second angle light source 212 are also arranged along the x-direction, and the angle between the maximum light-emitting angle of the first angle light source 211 and the x-direction is set to be smaller than the angle between the maximum light-emitting angle of the second angle light source 212 and the x-direction, so that the first angle light source 211 and the second angle light source 212 do not interfere with each other during movement.

[0054] In some embodiments, the first angle light source 211 is disposed on the side of the second angle light source 212 away from the explosion-proof valve. Among them, the high angle light source with a smaller angle with the x direction is disposed away from the side of the explosion-proof valve, and when the first angle light source 211 moves along the x direction, the emitted light of the first angle light source 211 does not interfere with the emitted light of the second angle light source 212, which facilitates the movement of the first angle light source 211 and the second angle light source 212 in the x direction.

[0055] In some embodiments, the first angle light source 211 and the second angle light source 212 are both annular light sources. The center of the annular light source and the center of the explosion-proof valve are both in the first direction x, so that the first angle light source 211 and the second angle light source 212 can be evenly converged on the explosion-proof valve. The diameter of the first angle light source 211 can also be set to be smaller than the diameter of the second angle light source 212 to avoid mutual interference between the first angle light source 211 and the second angle light source 212 during movement.

[0056] The technical solution of the embodiment of the utility model is to set the angle between the maximum light output angle of the first angle light source and the first direction to be smaller than the angle between the maximum light output angle of the second angle light source and the first direction, so that the first angle light source and the second angle light source do not interfere with each other during movement, thereby facilitating the movement of the first angle light source and the second angle light source in the first direction.

[0057] Optional, Figure 3 This is a schematic diagram of the appearance detection principle of an explosion-proof valve provided according to an embodiment of the utility model, combined with Figure 1 and Figure 3 As shown, the lighting module 21 further includes a third angle light source 213, and the light emission colors of the third angle light source 213 and the second angle light source 212 are different;

[0058] The angle between the maximum light output angle of the second angle light source 212 and the first direction x is different from the angle between the main optical axis of the third angle light source 213 and the first direction x; and the height of the third angle light source 213 is adjustable along the first direction x so that the output light of the third angle light source 213 converges onto the explosion-proof valve film 12.

[0059] Among them, the explosion-proof valve film 12 of the explosion-proof valve used in different application scenarios in the prior art can have different colors. Therefore, if the lighting color conflicts with the corresponding explosion-proof valve film 12 color, for example, the explosion-proof valve film 12 color is red, and the lighting color is blue, the imaging image in the imaging module 22 is prone to appear black due to the overlap of red and blue, thereby affecting the subsequent judgment of the imaging image by the control module. Therefore, the embodiment of the utility model sets a third angle light source 213, and the third angle light source 213 and the first angle light source 211 have different luminous colors to adapt to explosion-proof valve films 12 of different colors.

[0060] Among them, the angle between the maximum light output angle of the second angle light source 212 and the first direction x is different from the angle between the main optical axis of the third angle light source 213 and the first direction x, and the third angle light source 213 can be adjusted along the x direction, so that the output light of the third angle light source 213 is converged on the explosion-proof valve film 12, so that the control module can distinguish the imaging images corresponding to different light sources according to the difference in the imaging image effects of the second angle light source 212 and the third angle light source 213.

[0061] In some embodiments, the light emitting colors of the first angle light source 211, the second angle light source 212 and the third angle light source 213 are all different, and the angle between the maximum light emitting angle of the first angle light source 211 and the first direction x, the angle between the maximum light emitting angle of the second angle light source 212 and the first direction x, and the angle between the main optical axis of the third angle light source 213 and the first direction x are all different, so that the imaging module 22 can obtain three imaging images with different colors and different light distribution conditions, which is helpful for the appearance detection of explosion-proof valves of explosion-proof valve films of different colors, and improves the compatibility of the appearance detection device with explosion-proof valve films 12 of different colors.

[0062] In some embodiments, the lighting module 21 further includes a collimated light source 214 ; the main optical axis of the collimated light source 214 is parallel to the first direction x, and is used to illuminate the surface of the explosion-proof valve.

[0063] Among them, the collimated light source 214 can be used to illuminate the entire surface of the explosion-proof valve. The main optical axis of the collimated light source 214 is parallel to the x-direction. The appearance of the explosion-proof valve can be judged based on the imaging image obtained by the collimated light source 214, thereby increasing the functionality of the appearance detection device.

[0064] Optional, continue to refer to Figure 1 As shown, the appearance inspection device further includes a fixed support unit 3 and a sliding unit 4;

[0065] The sliding unit 4 is fixedly connected to the fixed support unit 3;

[0066] The sliding unit 4 includes a rotating screw 41, a sliding track 42, a support plate 43 and a rotating handle 44;

[0067] One end of the rotating screw rod 41 is fixedly connected to the rotating handle 44, and the other end away from the rotating handle 44 is fixedly connected to the supporting plate 43;

[0068] The support plate 43 is fixedly connected to the imaging module 22 and the lighting module 21 respectively, and is slidably connected to the sliding rail 42; the support plate 43 is slidable on the sliding rail 42 along the first direction x.

[0069] The fixed support unit 3 can be used to support the appearance inspection device and fix the appearance inspection device on the machine platform. The sliding unit 4 can be used to adjust the height of the imaging module 22 and the lighting module 21 in the x direction.

[0070] The sliding unit 4 includes a rotating screw 41, a sliding track 42, a support plate 43 and a rotating handle 44. The sliding track 42 can be fixedly connected to the fixed support unit 3. The rotating screw 41 can be rotatably connected to the fixed support unit 3 and the rotating screw 41 is between the two tracks. One end of the rotating screw 41 is also connected to the support plate 43, and the support plate 43 is also slidably connected to the sliding track 42. When the inspection personnel rotate the rotating handle 44, the rotating screw 41 rotates along the thread, and at the same time drives the support plate 43 to move on the sliding track 42, thereby driving the imaging module 22 and the lighting module 21 to adjust their height along the x direction.

[0071] In some embodiments, the appearance detection device also includes at least two fasteners 45, one fastener 45 is arranged at the connection between the rotating screw 41 and the support plate 43, which can fasten the connection between the rotating screw 41 and the support plate 43, thereby locking the rotating screw 41; one fastener 45 is arranged at the connection between the support plate 43 and the sliding rail 42, which can fasten the connection between the support plate 43 and the sliding rail 42, thereby locking the support plate 43.

[0072] The technical solution of the embodiment of the utility model is to set a sliding unit and a fixed support unit in the appearance detection device. The sliding unit includes a rotating screw, a sliding track, a support plate and a rotating handle. The rotating screw is driven to rotate by the rotating handle, so that the support plate slides on the sliding track, thereby driving the imaging module and the lighting module to be adjustable in height along the first direction x.

[0073] Optionally, the appearance detection device further includes a motor, the motor is communicatively connected to the control module, and the motor is also fixedly connected to the support plate; ( Figure 1 Motor and control module not shown)

[0074] The control module is also used to control the support plate to slide on the sliding track by controlling the working state of the motor.

[0075] A motor may be provided in the appearance inspection device, and the motor is communicatively connected to the control module and fixedly connected to the support plate. The control module may control the motor to drive the support plate to slide on the sliding track, drive the imaging module and the lighting module to move along the x direction, and realize that the imaging module and the lighting module are height-adjustable along the first direction x.

[0076] Optional, Figure 4 FIG. 1 is a schematic diagram of the side structure of an appearance detection device for an explosion-proof valve provided according to an embodiment of the utility model. Figure 4 and Figure 2 As shown, the explosion-proof valve appearance inspection device also includes a fixing plate 5; the lighting module 21 is fixedly connected to the sliding unit 4 through the fixing plate 5; the imaging module 22 is fixedly connected to the sliding unit 4 through the fixing plate 5;

[0077] The fixing plate 5 includes a plurality of lighting fixing through holes 51 with different heights and a plurality of imaging fixing through holes 52 with different heights;

[0078] The lighting module 21 includes a lighting fastener adapted to the lighting fixing through hole 51, and the imaging module 22 includes a camera fastener adapted to the imaging fixing through hole 52;

[0079] The lighting fastener is pluggable and connected to the lighting fixing through hole 51, and the camera fastener is pluggable and connected to the imaging fixing through hole 52. Figure 4 Lighting fasteners and camera fasteners are not shown)

[0080] Among them, the imaging module 22 and the lighting module 21 can be connected to the sliding unit 4 through the fixed plate 5. During the movement of the sliding unit 4, the imaging module 22 and the lighting module 21 move at the same time, and their relative positions do not change, thereby achieving coarse adjustment of the height of the imaging module 22 and the lighting module 21.

[0081] Among them, the fixing plate 5 includes multiple groups of lighting fixing through holes 51 with different heights and multiple groups of imaging fixing through holes 52 with different heights. The lighting module 21 is connected to the fixing plate 5 through a lighting fastener. It can be understood that the lighting module 21 has different corresponding lighting fixing through holes 51 when fixed to the fixing plate 5, and the distance between the lighting module 21 and the explosion-proof valve is also different, so that the height of the lighting module 21 can be adjusted separately. The imaging module 22 is connected to the fixing plate 5 through a camera fastener. It can be understood that the imaging module 22 has different corresponding imaging fixing through holes 52 when fixed to the fixing plate 5, and the distance between the imaging module 22 and the explosion-proof valve is also different, so that the height of the imaging module 22 can be adjusted separately.

[0082] The technical solution of the embodiment of the utility model is to set a fixing plate in the appearance inspection device, and set multiple groups of lighting fixing through holes with different heights and multiple groups of imaging fixing through holes with different heights on the fixing plate, and adjust the height of the lighting module by adjusting the different connection positions of the lighting module and the imaging module by adjusting the different connection positions of the imaging module and the imaging fixing through holes, so as to achieve fine adjustment of the heights of the lighting module and the imaging module.

[0083] Optional, Figure 5 This is a partial enlarged structural diagram of an appearance detection device for explosion-proof valves provided according to an embodiment of the utility model, combined with Figure 4 and Figure 5 As shown, the multiple groups of lighting fixing through holes 51 with different heights include multiple groups of first angle fixing through holes 511 with different heights and multiple groups of second angle fixing through holes 512 with different heights; the distance between the first angle fixing through holes 511 and the explosion-proof valve is greater than the distance between the second angle fixing through holes 512 and the explosion-proof valve;

[0084] The first angle light source 211 includes a first angle fastener, and the second angle light source 212 includes a second angle fastener;

[0085] The first angle fastener is pluggable connected to the first angle fixing through hole 511 , and the second angle fastener is pluggable connected to the second angle fixing through hole 512 .

[0086] Among them, the distance between the first angle fixed through hole 511 and the explosion-proof valve is set to be greater than the distance between the second angle fixed through hole 512 and the explosion-proof valve, so that the first angle light source 211 is farther away from the explosion-proof valve than the second angle light source 212, reducing the mutual interference between the first angle light source 211 and the second angle light source 212.

[0087] Among them, the first angle light source 211 is connected to the fixed plate 5 through a first angle fastener, and the height of the first angle light source 211 is adjusted by the different positions of the corresponding first angle fixed through hole 511; the second angle light source 212 is connected to the fixed plate 5 through a second angle fastener, and the height of the second angle light source 212 is adjusted by the different positions of the corresponding second angle fixed through hole 512.

[0088] The technical solution of the embodiment of the utility model is to set a first angle fixed through hole and a second angle fixed through hole on a fixed plate, and adjust the height of the first angle light source at the position of the first angle fixed through hole by the first angle light source to achieve the convergence of the first angle light source on the explosion-proof valve film; and adjust the height of the second angle light source at the position of the second angle fixed through hole by the second angle light source to achieve the convergence of the second angle light source on the metal foil of the explosion-proof valve.

[0089] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An appearance inspection device for explosion-proof valves, characterized in that: The appearance detection device comprises: a lighting module, an imaging module and a control module; The lighting module includes a first angle light source and a second angle light source arranged along a first direction, the angle between the maximum light output angle of the first angle light source and the first direction is different from the angle between the maximum light output angle of the second angle light source and the first direction; the first angle light source is height-adjustable along the first direction so that the light emitted by the first angle light source converges on the explosion-proof valve film; the second angle light source is height-adjustable along the first direction so that the light emitted by the second angle light source converges on the explosion-proof valve metal foil; The imaging module is used to image the surface of the explosion-proof valve film according to the light emitted by the first angle light source, and to image the surface of the explosion-proof valve metal foil according to the light emitted by the second angle light source; The control module is in communication connection with the imaging module, and is used for judging whether the electrolyte is located on the surface of the explosion-proof valve film and on the surface of the explosion-proof valve metal foil according to the imaging image of the imaging module.

2. The appearance inspection device according to claim 1, characterized in that: The included angle between the maximum light emitting angle of the first-angle light source and the first direction is smaller than the included angle between the maximum light emitting angle of the second-angle light source and the first direction.

3. The appearance inspection device according to claim 2, characterized in that: The first angle light source is arranged on a side of the second angle light source away from the explosion-proof valve.

4. The appearance inspection device according to claim 1, characterized in that: The lighting module further includes a third angle light source, and the light color of the third angle light source is different from that of the first angle light source; The angle between the maximum light output angle of the second angle light source and the first direction is different from the angle between the main optical axis of the third angle light source and the first direction; and the height of the third angle light source is adjustable along the first direction so that the output light of the third angle light source converges onto the explosion-proof valve film.

5. The appearance inspection device according to claim 4, characterized in that: The lighting module also includes a collimated light source; The main optical axis of the collimated light source is parallel to the first direction and is used to illuminate the surface of the explosion-proof valve.

6. The appearance inspection device according to claim 1, characterized in that: The first angle light source and the second angle light source are both annular light sources.

7. The appearance inspection device according to claim 1, characterized in that: The appearance inspection device also includes a fixed support unit and a sliding unit; The sliding unit is fixedly connected to the fixed support unit; The sliding unit comprises a rotating screw, a sliding track, a supporting plate and a rotating handle; One end of the rotating screw is fixedly connected to the rotating handle, and the other end away from the rotating handle is fixedly connected to the support plate; The support plate is fixedly connected to the imaging module and the lighting module respectively, and is slidably connected to the sliding track; the support plate is slidable on the sliding track along the first direction.

8. The appearance inspection device according to claim 7, characterized in that: The appearance detection device further includes a motor, the motor is communicatively connected to the control module, and the motor is also fixedly connected to the support plate; The control module is also used to control the support plate to slide on the sliding track by controlling the working state of the motor.

9. The appearance inspection device according to claim 7, characterized in that: The explosion-proof valve appearance detection device also includes a fixing plate; the lighting module is fixedly connected to the sliding unit through the fixing plate; the imaging module is fixedly connected to the sliding unit through the fixing plate; The fixing plate includes a plurality of groups of lighting fixing through holes with different heights and a plurality of groups of imaging fixing through holes with different heights; The lighting module includes a lighting fastener adapted to the lighting fixing through hole, and the imaging module includes a camera fastener adapted to the imaging fixing through hole; The lighting fastener is pluggably connected to the lighting fixing through hole, and the camera fastener is pluggably connected to the imaging fixing through hole.

10. The appearance inspection device according to claim 9, characterized in that: The plurality of groups of lighting fixed through holes with different heights include a plurality of groups of first angle fixed through holes with different heights and a plurality of groups of second angle fixed through holes with different heights; the distance between the first angle fixed through holes and the explosion-proof valve is greater than the distance between the second angle fixed through holes and the explosion-proof valve; The first angle light source includes a first angle fastener, and the second angle light source includes a second angle fastener; The first angle fastener is pluggably connected to the first angle fixing through hole, and the second angle fastener is pluggably connected to the second angle fixing through hole.

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