A glue application detection device for the root of a loudspeaker and its detection method

Abstract

The present invention discloses a glue application detection device for the root of a speaker and its detection method, which relates to the technical field of detection devices. The present invention includes a speaker body, an industrial camera, a light source, a Fresnel lens, a base, and a cylindrical sound gauge. An installation table is rotatably installed on the base. The following steps are also included: S1: Check whether the signal connections between the controller and the industrial camera, the light source, the electric push rod, the rotation motor, the servo motor, the lifting motor, and the display screen are stable. The advantages are as follows: The present invention can effectively fix the speaker body and make it coaxial with the light source, ensuring the accurate illumination position of the light during the detection process. Moreover, the illumination position of the light can be adjusted as needed, facilitating the accurate glue application detection of speaker bodies of different specifications. The rotation of the speaker body during the detection process enables a more accurate and comprehensive judgment of its glue application result, effectively improving the detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a glue application detection device for the root of a loudspeaker and a detection method thereof. Background Art

[0002] In the production process of loudspeakers, watering is usually used to fix the loudspeaker components to prevent damage to the components caused by the vibration of the loudspeaker during use, and at the same time, it can also enhance the sealing performance between the loudspeaker and the housing. The glue application effect directly affects the subsequent use effect of the loudspeaker. Therefore, a detection device is used to detect it after the glue application is completed.

[0003] After retrieval, a patent document with the publication number of CN108802030A discloses a glue application detection device for the root of a loudspeaker, which includes a mounting bracket, an industrial camera arranged on the mounting bracket, a display electrically connected to the industrial camera, a light source arranged below the lens of the industrial camera, and a Fresnel lens or a convex lens arranged below the light source.

[0004] The glue application detection device for the root of the loudspeaker has the following deficiencies:

[0005] 1. When detecting the glue application situation at the root of the loudspeaker, it is impossible to ensure that the center of the loudspeaker is coaxial with the light source and the Fresnel lens. Therefore, the detection pattern captured by the industrial camera may be deviated, affecting the accuracy of the detection result;

[0006] 2. When detecting the glue application situation at the root of the loudspeaker, it is judged whether the detected pattern captured by the industrial camera is a complete annular pattern to determine the glue application effect. It can only detect the situation of missed glue application, cannot detect the uniformity of glue application, and it is also difficult to ensure the accuracy of the detection result.

[0007] In summary, it is necessary to design a glue application detection device for the root of a loudspeaker and a detection method thereof. Summary of the Invention

[0008] Aiming at the deficiencies of the prior art, the present invention provides a glue application detection device for the root of a loudspeaker and a detection method thereof, which solves the problems raised in the above background art.

[0009] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0010] A glue application detection device for the root of a loudspeaker includes a loudspeaker body, an industrial camera, a light source, a Fresnel lens, a base, and a cylindrical sound gauge. The base is rotatably installed with a mounting table, and the mounting table is installed with a clamping component that cooperates with the loudspeaker body. The base is installed with a fixing plate, and the fixing plate is installed with a fixing component that cooperates with the Fresnel lens;

[0011] An installation frame is fixedly installed on the fixed plate, and a lifting component matched with the light source is installed in the installation frame. The industrial camera is fixedly installed on the top of the inner wall of the installation frame, and the industrial camera, the light source, the Fresnel lens and the installation table are coaxially arranged.

[0012] Further, the clamping component includes two arc-shaped plates slidably installed on the installation table. A chute is opened on the installation table, and a bidirectional lead screw is rotatably installed in the chute. Two sliders are threadedly connected to the bidirectional lead screw, and the two sliders are respectively fixedly connected to the two arc-shaped plates. A servo motor is fixedly installed on the side wall of the installation table, and the output end of the servo motor is fixedly connected to one end of the bidirectional lead screw.

[0013] Further, two support frames are fixedly installed at the bottom of the base. A rotating motor is also fixedly installed at the bottom of the base, and the output end of the rotating motor is fixedly connected to the bottom of the installation table.

[0014] Further, four fixing blocks are fixedly installed on the side wall of the fixed plate. An electric push rod is installed between one of the fixing blocks and the base, and telescopic rods are installed between the other three fixing blocks and the base.

[0015] Further, the fixing component includes a positioning plate installed on the fixed plate. A fitting groove is provided on the fixed plate, and a pressing groove is provided on the positioning plate. The fitting groove and the pressing groove respectively cooperate with the upper and lower surfaces of the Fresnel lens. A connecting frame is fixedly installed at the bottom of the positioning plate. A return groove engaged with the connecting frame is provided on the fixed plate. The size of the connecting frame is larger than the size of the Fresnel lens, the size of the positioning plate is smaller than the size of the installation frame, and two plugging mechanisms are installed between the fixed plate and the connecting frame.

[0016] Further, the plugging mechanism includes a plugging hole opened on the connecting frame. A plugging block is slidably installed on the fixed plate, and the plugging block corresponds to the plugging hole in position. One end of the plugging block away from the connecting frame is fixedly installed with a pull rod slidably connected to the fixed plate, and a pull plate is fixedly installed at the end of the pull rod located outside the fixed plate. A tension spring is installed between the pull plate and the fixed plate.

[0017] Further, the lifting component includes two groups of connecting blocks that are fixedly installed on the left and right inner walls of the installation frame and cooperate with each other in pairs. A screw rod is rotatably installed between one group of the connecting blocks, and a support rod is threadedly connected to the screw rod. A guide rod is fixedly installed between the other group of the connecting blocks, and a support rod is also slidably installed on the guide rod. Both of the two support rods are fixedly connected to the light source. A lifting motor is fixedly installed on one of the connecting blocks, and the output end of the lifting motor is fixedly connected to the top of the screw rod.

[0018] Further, a display screen is installed at the rear end of the mounting bracket through a display bracket. A controller is fixedly installed at the top of the mounting bracket, and the controller is electrically connected to the industrial camera, the light source, the electric push rod, the rotating motor, the servo motor, the lifting motor, and the display screen.

[0019] Further, the diameters of the cylindrical sound gauge, the light source, the industrial camera, and the Fresnel lens increase in sequence.

[0020] A method for detecting glue application at the root of a speaker includes the above-mentioned device for detecting glue application at the root of a speaker, and further includes the following steps:

[0021] S1: Check whether the signal connections between the controller and the industrial camera, the light source, the electric push rod, the rotating motor, the servo motor, the lifting motor, and the display screen are stable, and debug the above components to ensure that they can all be used normally;

[0022] S2: Place the bottom of the speaker body facing down and the cylindrical sound gauge facing up on the mounting table. Then, start the servo motor through the controller to make the two arc-shaped plates approach each other, fix the speaker body on the mounting table, and make it coaxial with the mounting table.

[0023] S3: Turn on the light source. At this time, the straight light is refracted by the Fresnel lens and irradiated on the glue application position of the speaker body. Then, the reflected light from the glue application position passes through the Fresnel lens again and is captured by the industrial camera, and the captured image is displayed on the display screen.

[0024] S4: First, observe whether the pattern formed on the display screen is circular. If not, start the electric push rod and the lifting motor through the controller to adjust the distance between the light source and the Fresnel lens and the distance between the Fresnel lens and the glue application position until the pattern displayed on the display screen is circular, and then stop running the electric push rod and the lifting motor.

[0025] S5: Then, start the rotating motor through the controller to drive the speaker body to rotate horizontally. At this time, observe whether the circular ring on the display screen always remains complete and whether its shape changes during the rotation. If it always remains complete and there is no shape change, it means that the glue application effect is good. If there is a fault, it means that there is a problem of missed glue application. If the shape changes, it means that the glue application is uneven.

[0026] Compared with the existing technology, the advantages of the present invention are as follows:

[0027] 1: Through the cooperation of the mounting table and the clamping assembly, the speaker body can be effectively fixed and made coaxial with the light source, ensuring the accurate irradiation position of the light during the detection process and avoiding the problem of inaccurate detection results caused by deviation in the irradiation position.

[0028] 2: Through the cooperation of the rotating motor and the mounting table, after the speaker body is fixed, it can be horizontally rotated relative to the light source. Furthermore, the gluing effect can be judged more accurately and comprehensively by observing the shape and integrity changes of the pattern during the rotation process, effectively improving the detection accuracy.

[0029] 3: Through the cooperation of the electric push rod and the lifting component, the position where the light irradiates on the speaker body can be adjusted as needed, and the clarity of the light can be ensured, facilitating the gluing detection of speaker bodies of different specifications and effectively increasing the detection range.

[0030] In summary, the present invention can effectively fix the speaker body, make it coaxial with the light source, ensure the accurate irradiation position of the light during the detection process, and can also adjust the irradiation position of the light as needed, facilitating the accurate gluing detection of speaker bodies of different specifications. The rotation of the speaker body during the detection process enables a more accurate and comprehensive judgment of its gluing result, effectively improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a glue application detection device for the root of a speaker proposed by the present invention;

[0032] Figure 2 is Figure 1 a schematic structural diagram after removing the speaker body;

[0033] Figure 3 is Figure 2 a schematic structural diagram after deflecting upward by a certain angle;

[0034] Figure 4 is Figure 3 an enlarged schematic structural diagram of the base and its connection components in ;

[0035] Figure 5 is Figure 4 a schematic exploded view after deflecting by a certain angle;

[0036] Figure 6 is Figure 3 an enlarged schematic exploded view of the fixing plate and its connection components in ;

[0037] Figure 7 is Figure 6 a schematic structural diagram after deflecting by a certain angle;

[0038] Figure 8 is Figure 6 an enlarged schematic structural diagram of one of the plug-in blocks and its connection components;

[0039] Figure 9 is Figure 3Schematic enlarged view of the structure of the mounting bracket and its connection components;

[0040] Figure 10 is Figure 9 Schematic view of the structure after deflecting a certain angle.

[0041] In the figure: 1 loudspeaker body, 2 industrial camera, 3 light source, 4 Fresnel lens, 5 base, 6 mounting table, 7 electric push rod, 8 telescopic rod, 9 fixing block, 10 fixing plate, 11 fitting groove, 12 positioning plate, 13 pressing groove, 14 connecting frame, 15 return groove, 16 insertion hole, 17 insertion block, 18 pull rod, 19 pull disc, 20 tension spring, 21 support frame, 22 rotation motor, 23 sliding groove, 24 bidirectional lead screw, 25 slider, 26 arc plate, 27 servo motor, 28 mounting bracket, 29 connecting block, 30 screw, 31 support rod, 32 lifting motor, 33 controller, 34 display bracket, 35 display screen, 36 cylindrical sound gauge. Specific implementation manner

[0042] Referring to Figures 1 - 10 , a glue application detection device for the root of a loudspeaker, including a loudspeaker body 1, an industrial camera 2, a light source 3, a Fresnel lens 4, a base 5 and a cylindrical sound gauge 36. Among them, the loudspeaker body 1, the industrial camera 2, the light source 3, the Fresnel lens 4 and the cylindrical sound gauge 36 are all existing products mentioned in the patent document with the publication number of CN108802030A. The functions and operating methods are the same as those in the patent document with the publication number of CN108802030A. Therefore, the working principle and specific structure are not described here.

[0043] The industrial camera 2, the light source 3, the Fresnel lens 4 and the mounting table 6 are coaxially arranged, and the diameters of the cylindrical sound gauge 36, the light source 3, the industrial camera 2 and the Fresnel lens 4 increase in sequence. The advantage of this design is that when detecting, the light rays emitted by the light source 3 can be smoothly captured by the industrial camera 2 after being refracted by the Fresnel lens 4 and reflected by the glue application position. The mounting table 6 is rotatably installed on the base 5. Two support frames 21 are fixedly installed at the bottom of the base 5. A rotation motor 22 is also fixedly installed at the bottom of the base 5, and the output end of the rotation motor 22 is fixedly connected to the bottom of the mounting table 6. When the rotation motor 22 works, it can drive the mounting table 6 to rotate horizontally on the base 5.

[0044] A clamping assembly that mates with the speaker body 1 is installed on the mounting table 6. The clamping assembly includes two arc-shaped plates 26 slidably installed on the mounting table 6. A chute 23 is formed on the mounting table 6, and a bidirectional lead screw 24 is rotatably installed in the chute 23. Two sliders 25 are threadedly connected to the bidirectional lead screw 24, and the two sliders 25 are respectively fixedly connected to the two arc-shaped plates 26. A servo motor 27 is fixedly installed on the side wall of the mounting table 6, and the output end of the servo motor 27 is fixedly connected to one end of the bidirectional lead screw 24. When the servo motor 27 operates, through the cooperation of the bidirectional lead screw 24 and the two sliders 25, the two arc-shaped plates 26 can be simultaneously moved closer to or away from the center of the mounting table 6. After the speaker body 1 is placed on the mounting table 6, the speaker body 1 can be fixed by the mutual approach of the two arc-shaped plates 26. At the same time, due to the pushing action of the arc-shaped plates 26, it can be ensured that the center of the fixed speaker body 1 is coaxial with the mounting table 6, so that the light emitted by the light source 3 will be irradiated at the specified position, avoiding the problem of inaccurate detection results caused by the deviation of the light position.

[0045] After the fixing of the speaker body 1 is completed, the operation of the rotating motor 22 can drive the speaker body 1 to rotate horizontally on the base 5. At this time, since the position of the light source 3 remains unchanged, during the rotation of the speaker body 1, the pattern of the light reflected onto the gluing position and given to the industrial camera 2 will change to varying degrees according to the gluing situation at the gluing position. Specifically, the gluing situation can be judged according to the integrity and shape change of the pattern. If the pattern always remains complete and there is no shape change, it means that the gluing effect is good. If there is a break in the middle, it means that there is a problem of missing gluing. If the shape changes, it means that the gluing is uneven. Through this kind of detection, the gluing effect can be effectively detected more comprehensively and accurately.

[0046] A fixing plate 10 is installed on the base 5. Four fixing blocks 9 are fixedly installed on the side wall of the fixing plate 10. An electric push rod 7 is installed between one of the fixing blocks 9 and the base 5, and telescopic rods 8 are installed between the other three fixing blocks 9 and the base 5. The electric push rod 7 is a component that can perform telescopic movement driven by electricity, and the telescopic rod 8 is a common component that can be directly telescoped. When the electric push rod 7 expands and contracts, the fixing plate 10 can move up and down relative to the base 5, so as to adjust the distance between the Fresnel lens 4 and the speaker body 1. Due to the refraction effect of the Fresnel lens 4, the position of the light irradiated on the speaker body 1 can be adjusted, so as to realize the detection of the gluing situation at different positions and improve the detection range.

[0047] An installation frame 28 is fixedly installed on the fixed plate 10, and a lifting component that cooperates with the light source 3 is installed inside the installation frame 28. The industrial camera 2 is fixedly installed at the top of the inner wall of the installation frame 28. The lifting component includes two groups of connecting blocks 29 that are fixedly installed on the left and right inner walls of the installation frame 28 and cooperate with each other in pairs. A screw rod 30 is rotatably installed between one group of connecting blocks 29, and a support rod 31 is threadedly connected to the screw rod 30. A guide rod is fixedly installed between the other group of connecting blocks 29, and a support rod 31 is also slidably installed on the guide rod. Both support rods 31 are fixedly connected to the light source 3. A lifting motor 32 is fixedly installed on one of the connecting blocks 29, and the output end of the lifting motor 32 is fixedly connected to the top of the screw rod 30. When the lifting motor 32 works, the light source 3 can be moved up and down inside the installation frame 28 through the cooperation of the screw rod 30 and the corresponding support rod 31, so as to control its distance relative to the Fresnel lens 4, which is convenient for ensuring that the light irradiated on the gluing position remains clear after the position of the Fresnel lens 4 changes, and reducing the problem of scattering.

[0048] A display screen 35 is installed at the rear end of the installation frame 28 through a display screen support 34. A controller 33 is fixedly installed at the top of the installation frame 28, and the controller 33 is electrically connected to the industrial camera 2, the light source 3, the electric push rod 7, the rotating motor 22, the servo motor 27, the lifting motor 32, and the display screen 35. The display screen 35 can display the pattern captured by the industrial camera 2 in real time, which is convenient for the staff to intuitively view the monitoring results. The controller 33 can be used to control the working conditions of the industrial camera 2, the light source 3, the electric push rod 7, the rotating motor 22, the servo motor 27, and the lifting motor 32.

[0049] A fixing component that cooperates with the Fresnel lens 4 is installed on the fixed plate 10. The fixing component includes a positioning plate 12 installed on the fixed plate 10. A fitting groove 11 is provided on the fixed plate 10, and a pressing groove 13 is provided on the positioning plate 12. The fitting groove 11 and the pressing groove 13 respectively cooperate with the upper and lower surfaces of the Fresnel lens 4. The cooperation of the fitting groove 11 and the pressing groove 13 can make the Fresnel lens 4 be stably clamped between the fixed plate 10 and the positioning plate 12, and because of the shape fitting, it can also reduce the possibility of wear and damage of the Fresnel lens 4 and play a certain protective role for it.

[0050] A connecting frame 14 is fixedly installed at the bottom of the positioning plate 12. A return-shaped groove 15 that engages with the connecting frame 14 is provided on the fixing plate 10. The size of the connecting frame 14 is larger than the size of the Fresnel lens 4, and the size of the positioning plate 12 is smaller than the size of the mounting bracket 28. Two plugging mechanisms are installed between the fixing plate 10 and the connecting frame 14. The plugging mechanism includes a plugging hole 16 opened on the connecting frame 14. A plugging block 17 is slidably installed on the fixing plate 10, and the plugging block 17 corresponds to the plugging hole 16 in position. A pull rod 18 that is slidably connected to the fixing plate 10 is fixedly installed at one end of the plugging block 17 away from the connecting frame 14, and a pulling plate 19 is fixedly installed at the end of the pull rod 18 located outside the fixing plate 10. A tension spring 20 is installed between the pulling plate 19 and the fixing plate 10. When installing the Fresnel lens 4, first place its arc surface downward in the fitting groove 11 on the fixing plate 10, and then align the connecting frame 14 on the positioning plate 12 with the return-shaped groove 15 on the fixing plate 10 to snap the positioning plate 12 onto the fixing plate 10. After that, utilize the elastic force of the tension spring 20 to make the pulling plate 19 automatically approach the connecting frame 14, and then the plugging block 17 can be inserted into the plugging hole 16, ensuring the fixing effect between the positioning plate 12 and the fixing plate 10, and thus ensuring the fixing of the Fresnel lens 4. On the contrary, when it is necessary to replace the Fresnel lens 4 of different specifications, pull the pulling plate 19 outward to separate the plugging block 17 from the plugging hole 16, and then move the positioning plate 12 upward to perform the replacement process of the Fresnel lens 4, and the operation is simple and convenient.

[0051] The controller 33 can specifically adopt a controller of the KV-16AT model. The rotating motor 22 can specifically adopt a motor that can only rotate unidirectionally and is common in daily life and work. Both the servo motor 27 and the lifting motor 32 can adopt servo motors of the ACM6004M2H model.

[0052] In the present invention, a method for detecting glue application at the root of a loudspeaker includes the following steps:

[0053] Equipment inspection and debugging: Check whether the signal connections between the controller 33 and the industrial camera 2, the light source 3, the electric push rod 7, the rotating motor 22, the servo motor 27, the lifting motor 32, and the display screen 35 are stable, and debug the above components to ensure that they can all be used normally;

[0054] Fixing of the loudspeaker body 1: Place the loudspeaker body 1 with its bottom facing downward and the cylindrical sound gauge 36 upward on the mounting table 6. Then, start the servo motor 27 through the controller 33 to make the two arc-shaped plates 26 approach each other, fix the loudspeaker body 1 on the mounting table 6 and make it coaxial with the mounting table 6;

[0055] Detection and processing: Turn on the light source 3. At this time, the linear light is refracted by the Fresnel lens 4 and irradiated on the glue application position of the loudspeaker body 1. Then, the reflected light from the glue application position passes through the Fresnel lens 4 again and is captured by the industrial camera 2, and the captured image is displayed on the display screen 35;

[0056] First, observe whether the pattern formed on the display screen 35 is circular. If not, start the electric push rod 7 and the lifting motor 32 through the controller 33 to adjust the distance between the light source 3 and the Fresnel lens 4 and the distance between the Fresnel lens 4 and the gluing position until the pattern displayed on the display screen 35 is circular, and then stop the operation of the electric push rod 7 and the lifting motor 32;

[0057] Result judgment: Make the rotating motor 22 operate through the controller 33 to drive the speaker body 1 to rotate horizontally. At this time, observe whether the circle on the display screen 35 always remains complete and whether its shape changes during the rotation. If it always remains complete and there is no shape change, it means that the gluing effect is good. If there is a fault, it means that there is a problem of missing gluing. If the shape changes, it means that the gluing is uneven.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A device for detecting glue on the base of a loudspeaker, comprising a loudspeaker body (1), an industrial camera (2), a light source (3), a Fresnel lens (4), a base (5) and a cylindrical sound gauge (36), characterized in that: A mounting platform (6) is rotatably mounted on the base (5), and a clamping component matching the speaker body (1) is mounted on the mounting platform (6); a fixing plate (10) is mounted on the base (5), and a fixing component matching the Fresnel lens (4) is mounted on the fixing plate (10); A mounting frame (28) is fixedly mounted on the fixing plate (10), and a lifting assembly matching the light source (3) is installed in the mounting frame (28); the industrial camera (2) is fixedly mounted on the top of the inner wall of the mounting frame (28), and the industrial camera (2), the light source (3), the Fresnel lens (4) and the mounting platform (6) are coaxially arranged; The fixing assembly comprises a positioning plate (12) mounted on a fixing plate (10), the fixing plate (10) being provided with a fitting groove (11), the positioning plate (12) being provided with a pressing groove (13), and the fitting groove (11) and the pressing groove (13) respectively matching with the upper and lower surfaces of the Fresnel lens (4), a connecting frame (14) being fixedly mounted on the bottom of the positioning plate (12), the fixing plate (10) being provided with a circular groove (15) engaging with the connecting frame (14), the size of the connecting frame (14) being larger than the size of the Fresnel lens (4), the size of the positioning plate (12) being smaller than the size of the mounting frame (28), and two plug-in mechanisms being installed between the fixing plate (10) and the connecting frame (14); The plug-in mechanism comprises a plug-in hole (16) provided on the connection frame (14); a plug-in block (17) is slidably mounted on the fixed plate (10); the plug-in block (17) corresponds to the position of the plug-in hole (16); a pull rod (18) slidably connected to the fixed plate (10) is fixedly mounted on one end of the plug-in block (17) away from the connection frame (14); a pull plate (19) is fixedly mounted on one end of the pull rod (18) located outside the fixed plate (10); a tension spring (20) is mounted between the pull plate (19) and the fixed plate (10); The lifting assembly comprises two groups of connecting blocks (29) fixedly mounted on the left and right inner walls of the mounting frame (28), each of which matches the other. A screw rod (30) is rotatably mounted between one group of the connecting blocks (29), and a support rod (31) is threadedly connected to the screw rod (30). A guide rod is fixedly mounted between the other group of the connecting blocks (29), and a support rod (31) is also slidably mounted on the guide rod. Both support rods (31) are fixedly connected to the light source (3). A lifting motor (32) is fixedly mounted on one of the connecting blocks (29), and the output end of the lifting motor (32) is fixedly connected to the top of the screw rod (30).

2. A speaker root glue detection device according to claim 1, characterized in that: The clamping assembly comprises two arc-shaped plates (26) slidably mounted on a mounting platform (6); a slide groove (23) is provided on the mounting platform (6), and a bidirectional screw rod (24) is rotatably mounted in the slide groove (23); two sliders (25) are threadedly connected to the bidirectional screw rod (24), and the two sliders (25) are respectively fixedly connected to the two arc-shaped plates (26); a servo motor (27) is fixedly mounted on a side wall of the mounting platform (6), and an output end of the servo motor (27) is fixedly connected to one end of the bidirectional screw rod (24).

3. A speaker root glue detection device according to claim 2, characterized in that: Two support frames (21) are fixedly mounted on the bottom of the base (5), and a rotating motor (22) is also fixedly mounted on the bottom of the base (5), and the output end of the rotating motor (22) is fixedly connected to the bottom of the mounting platform (6).

4. A speaker root glue detection device according to claim 3, characterized in that: Four fixing blocks (9) are fixedly mounted on the side wall of the fixing plate (10), an electric push rod (7) is mounted between one of the fixing blocks (9) and the base (5), and telescopic rods (8) are mounted between the other three fixing blocks (9) and the base (5).

5. The speaker root glue detection device according to claim 4, characterized in that: A display screen (35) is mounted on the rear end of the mounting frame (28) via a display bracket (34), and a controller (33) is fixedly mounted on the top of the mounting frame (28), and the controller (33) is electrically connected to the industrial camera (2), the light source (3), the electric push rod (7), the rotating motor (22), the servo motor (27), the lifting motor (32) and the display screen (35).

6. A speaker root glue detection device according to claim 5, characterized in that: The diameters of the cylindrical sound gauge (36), the light source (3), the industrial camera (2) and the Fresnel lens (4) increase in sequence.

7. A method for detecting glue on the base of a loudspeaker, using the device for detecting glue on the base of a loudspeaker as claimed in claim 6, characterized in that: The following steps are also included: S1: Check whether the signal connection between the controller (33) and the industrial camera (2), the light source (3), the electric push rod (7), the rotating motor (22), the servo motor (27), the lifting motor (32) and the display screen (35) is stable, and debug the above components to ensure that they can be used normally; S2: placing the speaker body (1) with its bottom facing downward and the cylindrical sound gauge (36) facing upward on the mounting platform (6), then starting the servo motor (27) through the controller (33) to move the two arc-shaped plates (26) closer to each other, fixing the speaker body (1) on the mounting platform (6) and making it coaxial with the mounting platform (6); S3: Turn on the light source (3), and the Fresnel lens (4) refracts the linear light to illuminate the gluing position of the speaker body (1). Then, the reflected light at the gluing position is captured by the industrial camera (2) again through the Fresnel lens (4), and the captured image is displayed on the display screen (35); S4: First, observe whether the pattern formed on the display screen (35) is a circular ring. If not, start the electric push rod (7) and the lifting motor (32) through the controller (33), adjust the distance between the light source (3) and the Fresnel lens (4), and the distance between the Fresnel lens (4) and the gluing position, and stop the operation of the electric push rod (7) and the lifting motor (32) until the pattern displayed on the display screen (35) is a circular ring. S5: Then, the controller (33) is used to operate the rotating motor (22) to drive the speaker body (1) to rotate horizontally. At this time, it is observed whether the circular ring on the display screen (35) remains intact and whether the shape changes during the rotation. If it remains intact and has no shape change, it indicates that the gluing effect is good. If a fault occurs, it indicates that there is a problem of glue leakage. If the shape changes, it indicates that the gluing is uneven.

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