High-efficiency detection device for air tightness of corrugated pipe

Abstract

The invention relates to the technical field of air tightness detection, and particularly discloses a corrugated pipe air tightness efficient detection device which comprises a box body and a control console, the upper interior of the box body is divided into a water immersion detection area and a transmission assembly area by a partition plate, and a rotary drum and a cylinder which are axially aligned are arranged in the water immersion detection area and the transmission assembly area respectively; a disc connected with the rotary drum is rotationally arranged in the partition plate, one end of the rotary drum is connected with a driving assembly, a transparent glass plate is arranged on the side wall of the lower end of the water immersion detection area, and a CCD camera right facing the transparent glass plate is arranged on the outer side of the box body; according to the corrugated pipe air tightness efficient detection device, the rotary drum serves as a rotary carrier, whether bubbles are generated on the surface of the corrugated pipe or not is captured through the CCD camera, and then the air tightness of the corrugated pipe is judged according to whether the bubbles exist or not; the whole detection device realizes continuous and automatic detection of the air tightness of the corrugated pipe, and greatly improves the detection efficiency of the air tightness of the corrugated pipe.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness detection of pipe fittings, and in particular discloses a high-efficiency air tightness detection device for a bellows. Background Art

[0002] As a medium conveying pipeline, the air tightness of the bellows is an important performance indicator and needs to be tested before leaving the factory. When testing the air tightness of the pipeline, the current testing equipment on the market needs to seal both ends of the pipeline first, then pass high-pressure gas from one sealed end, and then use a pressure gauge to test the internal air pressure value or immerse the whole pipe in water to make a judgment based on the bubble situation.

[0003] For example, the utility model patent with application number 2022233285346 discloses a metal bellows air tightness detection device, including a base, a first stopper movably arranged on the base, a second stopper fixedly arranged on the base, the first stopper moves along the length direction of the base, and a clamping detection mechanism is fixed on the first stopper and the second stopper, and the clamping detection mechanism includes a mechanism base, a mechanism base spring, a first movable block, a second movable block, a mechanism button and a mechanism side spring. The detection device disclosed in the patent uses an electric push rod to push the first stopper, thereby shortening the metal bellows and increasing the internal air pressure, and then judges the air tightness of the metal bellows by observing the air pressure value displayed by the barometer. Although the detection device disclosed in the patent can detect the air tightness of the bellows, it not only has low detection efficiency and cannot realize continuous automatic detection of a large number of bellows, but also some plastic bellows will crack during the demolding process after molding. The cracks on the surface of the plastic bellows caused by cracking are relatively small. Even if the air in the pipe can be discharged here, the amount discharged is not much, which leads to a small change in the air pressure inside the pipe body. It cannot be detected quickly using a barometer, and even if a problem with the sealing of the pipe body is detected, it is impossible to determine the location of the problem point in the first time. Therefore, in view of the above-mentioned shortcomings of the existing metal bellows air tightness detection device, the present application proposes a bellows air tightness efficient detection device that can realize continuous online and efficient detection of the air tightness of the bellows. Summary of the invention

[0004] The present invention aims to provide a high-efficiency detection device for the air tightness of a bellows, so as to solve the problems of low detection efficiency and inaccurate detection effect existing in the existing detection devices.

[0005] The present invention is achieved through the following technical solutions: A bellows air tightness high-efficiency detection device comprises a box and a control console, wherein the upper end of the box is open and the interior is divided into a water immersion detection area and a transmission assembly area by a partition, wherein a rotating drum and a cylinder arranged in axial alignment are respectively arranged in the water detection area and the transmission assembly area, a disc connected to the rotating drum is rotatably arranged in the partition, one end of the rotating drum is connected to a driving assembly, a transparent glass plate is arranged on the lower end side wall of the water immersion detection area, and a CCD camera arranged facing the transparent glass plate is arranged on the outer side of the box; A convex ring body is provided at one end of the rotating drum away from the cylindrical body, a plurality of pipe end positioning grooves are evenly provided on the convex ring body, and a sealing plunger is provided in the pipe end positioning groove, an axial slide rail corresponding to each pipe end positioning groove is provided on the outer circumferential surface of the rotating drum, a moving block is slidably provided on the axial slide rail, and a U-shaped groove aligned with the pipe end positioning groove is provided on the moving block; The disc is penetrated by a moving rod which is axially aligned with each moving block, one end of the moving rod is provided with a retaining ring, and the retaining ring is provided with a sealing plunger extending into the U-shaped groove, the other end of the moving rod is provided with a guide wheel, the cylinder is fixedly arranged and a guide groove which acts on the guide wheel is opened on the outer circumferential surface.

[0006] During operation of the high-efficiency bellows air tightness detection device disclosed in the present invention, the two ends of the bellows to be detected are respectively placed on the pipe end positioning groove and the U-shaped groove on the top of the drum. Then, as the drum carries the bellows and rotates downward, the retaining ring at the end of the moving rod is first pushed toward the moving block through the action between the guide wheel and the guide groove, so that the sealing plunger is inserted into one port of the bellows. Then, the moving block is continued to be pushed so that the other end of the bellows is inserted by the sealing plunger in the pipe end positioning groove, thereby completing the effective sealing of the two ends of the entire bellows.

[0007] Then, as the drum continues to rotate the bellows downward, the moving block will continue to move toward one side of the convex ring, so that the bellows is gradually compressed and the internal air pressure gradually increases. At the same time, the compressed bellows will be immersed in the water in the immersion detection area, and the CCD camera will capture the bubble generation on the surface of the bellows in real time. Once there are cracks or damaged points on the surface of the bellows, bubbles will definitely be generated here due to the discharge of compressed air. At this time, the information captured by the CCD camera can be judged by the console in the first time, and then an alarm can be issued to remind the operator to remove unqualified products.

[0008] Finally, when the bellows is transported upward from the bottom with the drum, the air pressure inside the bellows will actively stretch and reset the bellows until the moving block and the moving rod move axially and reset. At this time, the tested bellows can be taken out from the entire testing device.

[0009] As a further configuration of the above scheme, the guide groove includes an arc segment, an oblique line segment and a spiral line segment, the arc segment is arranged at the upper end of the cylinder away from the drum, the two oblique line segments are connected to the two ends of the arc segment, the two spiral line segments are respectively connected to the ends of the two oblique line segments and extend to the other side of the drum, and the ends of the two spiral line segments are connected at the bottom end of the drum. Through the specific definition and design of the guide groove, when each segment interacts with the guide wheel, the bellows on the top of the drum can be loaded, and then the two ends of the bellows are sealed by the movement of the moving block, and then the bellows is gradually compressed and put into the water for bubble observation, and after the detection is completed, it is gradually extended and extended upward out of the water to complete the reset, so that the bellows can efficiently and quickly complete each corresponding action in the manner of assembly line operation.

[0010] As a further configuration of the above scheme, a magnetic attraction component is provided between the moving block and the retaining ring, and a limiting protrusion for limiting the moving block is provided at the end of the axial slide rail close to one side of the cylinder. The magnetic component is designed to avoid the problem that when the bellows has poor air tightness and leaks, the compressed gas inside cannot achieve the bellows to stretch and return to its original position.

[0011] As a further configuration of the above scheme, a circular opening is provided on the partition, the disc is rotatably arranged in the circular opening, and a plurality of inserts for sealing the moving rod are evenly arranged on the outer edge of the disc. The above design can ensure that the water detection area and the transmission assembly area are sealed and separated, and prevent water in the water detection area from entering the transmission assembly area.

[0012] As a further configuration of the above solution, the driving assembly includes a driving motor, the driving motor and the roller shaft of the rotating drum are both provided with transmission wheels, and a transmission belt is provided between the two transmission wheels. The above is a specific design form of the driving assembly.

[0013] As a further configuration of the above scheme, a loading unit is provided above the water immersion detection area, an ejection mechanism is provided in the rotating drum, and a guide groove for receiving the bellows that are ejected is provided on the side of the water immersion detection area. The design of the loading unit and the ejection mechanism can further realize automatic loading and unloading during the bellows detection process, thereby improving the degree of automation and the detection efficiency.

[0014] As a further configuration of the above scheme, the feeding unit includes a conveying seat, in which at least two parallel conveying belts and a pulley shaft for driving the conveying belts are arranged, a plurality of positioning groove blocks are arranged at equal intervals on the outer surface of the conveying belt, and a material unloading guide bucket is arranged at the end of the conveying seat directly above the rotating drum. The above is a specific design form of the feeding unit, which can realize the conveying of corrugated pipes one by one through the conveying belt.

[0015] As a further configuration of the above solution, the axial slide rail is arranged on the half section of the drum away from the convex ring body, and the ejection mechanism is arranged on the half section of the drum close to the convex ring body.

[0016] As a further configuration of the above scheme, a cylindrical inner cavity is opened inside the rotating drum, a cam column fixed relative to the rotating drum is arranged in the cylindrical inner cavity, a radial push rod corresponding to each moving block is arranged on the rotating drum, the outer end of the radial push rod is connected to a push plate, the inner end of the radial push rod extends into the cylindrical inner cavity and is connected to a wheel strip, a spring is connected between the wheel strip and the inner wall of the cylindrical inner cavity, and a pressure wheel acting on the cam column is arranged in the wheel strip.

[0017] The above is a specific design form of the ejection mechanism. When the drum carries the bellows and rotates, the pressure wheel contacts the outer circular contour surface of the cam column under the action of the spring. At this time, the radial ejector rod and the ejector plate are suspended at the radial innermost end. When the detection is completed and rotated to a position aligned with the material guide groove, the pressure wheel and the raised end of the cam column interact with each other, so that the radial ejector rod and the ejector plate can be pushed radially outward, and then the bellows placed on the tube end positioning groove and the U-shaped groove are forced to be pushed down under the action of the ejector plate, and fall on the material guide groove, and finally the box body that rolls off the material guide groove is collected.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The high-efficiency detection device for the air tightness of a bellows disclosed in the present invention uses a rotating drum as a carrier, and a plurality of mechanisms which can fix the bellows and seal both ends are evenly arranged on the outer circumferential surface thereof; then, in the process of the rotating drum carrying the bellows and rotating downward into the water, the bellows can be further compressed through the action between the guide wheel and the guide groove, and then a CCD camera is used to capture whether bubbles are generated on the surface of the bellows, and then the air tightness of the bellows is judged by the presence or absence of bubbles; the entire detection device realizes continuous and automatic detection of the air tightness of the bellows, greatly improving the detection efficiency of the air tightness of the bellows.

[0019] The present invention utilizes the principle that the internal air pressure of the bellows increases during the compression process, and then rotates the bellows and immerses it in water to determine whether bubbles are generated, thereby achieving the effect of determining the air tightness of the bellows. Compared with measurement using a barometer, not only does it make the detection process of the air tightness of the bellows more intuitive and the detection results more accurate, but it can also find the defect position on the surface of the bellows in the first time according to the position where the bubbles are generated.

[0020] The present invention can also realize automatic loading and unloading during the bellows detection process through the design of the loading unit and the ejection mechanism, and its ejection mechanism interacts with the rotation process of the drum, and can automatically push the bellows down after the bellows is rotated out of the water, and then is received by the material guide trough and sent out of the box; the entire structural design is novel and ingenious, so that the entire detection device only needs one driving component to synchronously realize all steps in the bellows detection process, and the use effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure from a first angle of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure from a second angle of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure inside the box body of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the rotary drum, convex ring body, moving block, etc. in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the disc, the moving rod, the guide wheel, etc. in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the cylinder, guide groove, etc. in the present invention; Figure 7 For the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle; Figure 8 It is a schematic diagram of the three-dimensional structure of the ejection mechanism inside the drum in Example 2 of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional side plan view of the drum in Example 2 of the present invention; Fig.10 It is a schematic diagram of the planar structure of the loading unit in Example 2 of the present invention. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 10 , and describes the application in detail with reference to embodiments. Example 1

[0025] Embodiment 1 discloses a bellows air tightness high-efficiency detection device, see the attached Figures 1 to 3 The main body includes a box body 1 with an upper opening, a console 2 is arranged on the front side of the box body 1, and a partition 3 is arranged inside the box body 1, and the interior of the box body 1 is divided into a water immersion detection area 101 and a transmission assembly area 102 by the partition 3. A water injection pipe 103 is arranged on the front side of the water immersion detection area 101, and tap water can be added to the water immersion detection area 101 through the water injection pipe 103. A rectangular opening is opened at the lower end of the rear side of the water immersion detection area 101, and a transparent glass plate 104 is installed in the rectangular opening, and a CCD camera 4 is arranged perpendicular to the transparent glass plate 104 on the outside of the box body 1, and the CCD camera 4 is electrically connected to the video processing module and the control module inside the console 2 through a data line, and the image in the water immersion detection area 101 is captured by the CCD camera 4, and then fed back to the console 2 for processing and judgment.

[0026] A rotating drum 5 is arranged in the water immersion detection area 101 and is arranged to rotate along its length direction. A convex ring body 6 is arranged concentrically on one end of the rotating drum 5 away from the transmission assembly area 102, and a driving assembly 7 is connected to the end surface of the rotating drum 5. The driving assembly includes a driving motor 701 arranged on the top of the box body 1, and a driving wheel 702 is arranged on the driving motor 701 and the roller shaft of the rotating drum 5, and then a driving belt 703 is arranged between the two driving wheels 702, so that the rotating drum 5 can be rotated slowly at a set speed under the action of the driving motor 701.

[0027] Reference Figures 4 to 7, a plurality of pipe end positioning grooves 601 arranged toward the transmission assembly area 102 are provided in an annular array on the outer circumferential surface of the convex ring body 6. Specifically, the number of the pipe end positioning grooves 601 can be set between 6 and 10 according to the size of the drum 5. At the same time, a sealing plunger 602 arranged toward the transmission assembly area 102 is provided on the end wall of the pipe end positioning groove 601. An axial slide rail 8 is provided on the outer circumferential surface of the drum 5 to be axially aligned with each pipe end positioning groove 601, and then a moving block 9 is provided on each axial slide rail 8 for limited sliding, and a U-shaped groove 901 aligned with the pipe end positioning groove 601 is provided on each moving block 9. A magnetic suction sheet 902 is provided on the side of the moving block 9 facing the transmission assembly area 102, and a limiting protrusion 801 is provided at the end of the axial slide rail 8 close to the transmission assembly area 102, so that the moving block 9 cannot continue to move toward the transmission assembly area 102 when it moves to this point.

[0028] Reference Figure 3 and attached Figure 5 A circular opening aligned with the axial direction of the drum 5 is provided on the partition 3, a disc 10 is provided in a sealed and rotatable manner in the circular opening, a central shaft 11 connected to the drum 5 is provided at the center of the disc 10, and an insert 12 aligned with the axial direction of each moving block 9 is evenly provided at the outer edge of the disc 10. A moving rod 13 is inserted and inserted in a sealed manner in each insert 12, a retaining ring 14 is connected to the end of the moving rod 13 extending into the water immersion detection area 101, a sealing plunger 602 is also provided at the center of the retaining ring 14, and a magnetic ring 141 that is mutually attracted to the magnetic suction sheet 902 is provided on the periphery of the sealing plunger 602, and a guide wheel 15 arranged radially inward is provided at the end of the moving rod 13 extending into the transmission assembly area 102.

[0029] Reference Figure 3 and attached Figure 6 A cylinder 16 is provided in the transmission assembly area 102 and is aligned with the axial direction of the drum 5. The cylinder 16 is fixedly connected to the right side wall of the transmission assembly area 102 through a connecting portion 17 at the right end. A guide groove 18 is provided on the outer circumferential surface of the cylinder 16 to interact with all the guide wheels 15. The guide groove 18 includes an arc segment 181 with the top end away from the side of the drum 5, and the two ends of the arc segment 181 are connected to the oblique line segment 182 extending toward the side of the drum 5, and the end of each oblique line segment 182 is connected to the spiral line segment 183 extending toward the side of the drum 5. Finally, the ends of the two spiral line segments 183 are connected at the bottom end of the drum 5.

[0030] In this embodiment 1, through the interaction between the guide groove 18 and the guide wheel 15, when the guide wheel 15 is in the arc segment 181, the retaining ring 14 is separated from the moving block 9, so that the two ends of the corrugated tube 100 to be tested are placed on the tube end positioning groove 601 and the U-shaped groove 901 respectively; when the guide wheel 15 is in the oblique line segment 182, the retaining ring 14 moves toward the moving block 9, so that the sealing plunger 602 is inserted into the port of the corrugated tube 100 to seal it; when the guide wheel 15 is in the screw segment 182, the retaining ring 14 moves toward the moving block 9, so that the sealing plunger 602 is inserted into the port of the corrugated tube 100 to seal it; When the line segment 183 is in the middle, the retaining ring 14 will push the moving block 9 to move toward one side of the convex ring body 6, so that the other end of the bellows 100 is also inserted and sealed by the sealing plunger 602. Then, as the drum 5 continues to rotate, the retaining ring 14 will push the moving block 9 to continue to move toward one side of the convex ring body 6, thereby compressing the bellows 100 to increase its internal air pressure. When the bellows 100 is at the bottom of the drum 5 and immersed in water, the length of the bellows 100 is the smallest and the internal air pressure is the largest. At this time, once cracks or broken openings appear on the bellows 100, the internal high-pressure gas will be discharged from here and form bubbles in the water. The bubbles formed will be captured by the CCD camera 4 and fed back to the console 2, and then the console 2 will issue an alarm to remind the operator to remove the defective products. Example 2

[0031] Example 2 discloses a bellows air tightness high-efficiency detection device which is further optimized and improved based on the technical solution in Example 1. The similarities between the device and Example 1 will not be described again.

[0032] In the present embodiment 2, a loading unit 19 is arranged above the rotating drum 5, and an ejection mechanism is added to the rotating drum 5, which cooperates with the guide groove 105 on the front side of the immersion detection area 101 to realize automatic unloading of the bellows after the detection is completed.

[0033] Reference Figure 1 , Attachment Figure 2 and attached Fig.10 The loading unit 19 in this embodiment 2 includes a conveying seat 191 fixedly arranged at the upper end of the box body 1, and a pulley shaft 192 is arranged at both the front and rear ends of the conveying seat 191, and then at least two conveyor belts 193 are arranged between the two pulley shafts 192, and then a plurality of positioning groove blocks 194 are arranged at equal intervals on the outer circumferential surface of the conveyor belt 193, so that the loading unit 19 can convey the corrugated pipes 100 to be tested one by one. Finally, a material discharge guide hopper 195 located directly above the rotating drum 5 is also arranged at the lower end of the conveying seat 191, so that the fallen corrugated pipe 100 can accurately fall into the axially aligned pipe end positioning groove 601 and U-shaped groove 901 after passing through the material discharge guide hopper 195.

[0034] Reference Figure 3 , Attachment Figure 8 and attached Fig. 9The axial slide rail 8 in this embodiment 2 is arranged in the half section of the drum 5 away from the convex ring body 6, and then a columnar inner cavity is opened inside the half section of the drum 5 close to the convex ring body 6. The ejection mechanism includes a plurality of radial ejector rods 20 arranged through the drum 5, and each group of radial ejector rods 20 is arranged axially aligned with the moving block 9. A ejector plate 21 is connected to the outer end of each group of radial ejector rods 20, and then a wheel strip 22 is commonly connected to the inner end of each group of radial ejector rods 20 extending into the columnar inner cavity, and a pressing wheel 23 is rotatably arranged in the wheel strip 22, and a spring 24 is connected between the wheel strip 22 and the columnar inner cavity.

[0035] In addition, the roller shaft connected to the driving assembly 7 in this embodiment 2 is set as a hollow shaft 25, and a fixed shaft 26 is fixedly arranged in the hollow shaft 25, and then a cam column 27 that acts on the pressure wheel 23 is connected to the end of the fixed shaft 26 extending into the columnar inner cavity, and the raised end of the cam column 27 is tilted upward and aligned with the orientation of the material guide groove 105.

[0036] The ejection mechanism in this embodiment 2 operates synchronously with the rotation of the drum 5. When the bellows 100 rotating up from the water immersion detection area 101 is radially aligned with the raised end on the cam column 27, the pressure wheel 23 is acted upon by the cam column 27 to push the wheel strip 22 radially outward and overcome the force of the spring 24. Then, in the process of radially outward movement of the radial ejector rod 20 and the ejector plate 21, the bellows after the inspection is directly ejected and then sent out of the box body 1 by the material guide trough 105.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bellows air tightness high-efficiency detection device, comprising a box and a control console, characterized in that: The upper end of the box is open and the interior is divided into a water immersion detection area and a transmission assembly area by a partition. A rotating drum and a cylinder are respectively arranged in an axially aligned manner in the water detection area and the transmission assembly area. A disc connected to the rotating drum is rotatably arranged in the partition. One end of the rotating drum is connected to a driving assembly. A transparent glass plate is arranged on the lower end side wall of the water immersion detection area. A CCD camera facing the transparent glass plate is arranged on the outer side of the box; A convex ring body is provided at one end of the rotating drum away from the cylindrical body, a plurality of pipe end positioning grooves are evenly provided on the convex ring body, and a sealing plunger is provided in the pipe end positioning groove, an axial slide rail corresponding to each pipe end positioning groove is provided on the outer circumferential surface of the rotating drum, a moving block is slidably provided on the axial slide rail, and a U-shaped groove aligned with the pipe end positioning groove is provided on the moving block; The disc is penetrated by a moving rod which is axially aligned with each moving block, one end of the moving rod is provided with a retaining ring, and the retaining ring is provided with a sealing plunger extending into the U-shaped groove, the other end of the moving rod is provided with a guide wheel, the cylinder is fixedly arranged and a guide groove which acts on the guide wheel is opened on the outer circumferential surface.

2. The bellows airtightness efficient detection device according to claim 1, characterized in that: The guide groove includes an arc segment, an oblique line segment and a spiral line segment. The arc segment is arranged at the upper end of the cylinder away from the side of the drum. The two oblique line segments are connected to the two ends of the arc segment. The two spiral line segments are respectively connected to the ends of the two oblique line segments and extend to the other side of the drum. The ends of the two spiral line segments are connected at the bottom end of the drum.

3. The high-efficiency detection device for air tightness of a bellows according to claim 1, characterized in that: A magnetic attraction component is arranged between the moving block and the retaining ring, and a limiting protrusion for limiting the moving block is arranged at the end of the axial slide rail close to one side of the cylinder.

4. The high-efficiency detection device for air tightness of a bellows according to claim 1, characterized in that: A circular opening is provided on the partition plate, the disc seal is rotatably arranged in the circular opening, and a plurality of inserts for sealing and penetrating the moving rod are evenly arranged on the outer edge of the disc.

5. The high-efficiency detection device for air tightness of a bellows according to claim 1, characterized in that: The driving assembly comprises a driving motor. The driving motor and the roller shaft of the rotating drum are both provided with transmission wheels, and a transmission belt is provided between the two transmission wheels.

6. The high-efficiency detection device for air tightness of a bellows according to claim 1, characterized in that: A loading unit is arranged above the water immersion detection area, an ejection mechanism is arranged in the rotary drum, and a guide trough for receiving the bellows ejected from the side of the water immersion detection area is arranged.

7. The high-efficiency detection device for air tightness of a bellows according to claim 6, characterized in that: The loading unit includes a conveying seat, in which at least two parallel conveying belts and a pulley shaft for driving the conveying belts are arranged, a plurality of positioning groove blocks are arranged at equal intervals on the outer surface of the conveying belt, and a unloading guide bucket is arranged at the end of the conveying seat directly above the rotating drum.

8. The high-efficiency detection device for air tightness of a bellows according to claim 6, characterized in that: The axial slide rail is arranged on the half section of the drum away from the convex ring body, and the ejection mechanism is arranged on the half section of the drum close to the convex ring body.

9. The high-efficiency detection device for air tightness of a bellows according to claim 8, characterized in that: A cylindrical inner cavity is provided inside the rotating drum, a cam column fixed relative to the rotating drum is arranged in the cylindrical inner cavity, a radial push rod corresponding to each moving block is arranged on the rotating drum, the outer end of the radial push rod is connected to a push plate, the inner end of the radial push rod extends into the cylindrical inner cavity and is connected to a wheel strip, a spring is connected between the wheel strip and the inner wall of the cylindrical inner cavity, and a pressure wheel acting on the cam column is arranged in the wheel strip.

Images