Aerosol can sealing performance detection device

Abstract

The invention relates to the technical field of detection equipment, and provides an aerosol can sealing performance detection device which comprises a control system, a conveying mechanism, a soaking pressurization mechanism, a grabbing mechanism, a qualified product storage box and an unqualified product storage box. The conveying mechanism comprises a conveying belt and a transfer frame, and the conveying belt is used for conveying tank bodies; the soaking pressurization mechanism comprises a water tank and an inflation pressurization assembly; the inflating and pressurizing assembly is located in the water tank, moves up and down and comprises a plurality of inflating pipes; the grabbing mechanism is used for grabbing the tank body located on the transfer frame and sleeving the tank body into the corresponding inflation pipe, and is also used for driving the tank body to move up and down in the water tank along with the inflation pressurization assembly; the image acquisition mechanism is used for acquiring tank body detection images and feeding back the images to the control system, and the control system is used for controlling the grabbing mechanism to put qualified tank bodies and unqualified tank bodies into the qualified product storage box and the unqualified product storage box respectively according to the images fed back by the image acquisition mechanism. The device has the effect of facilitating water immersion pressurization detection of the tank body.

Description

Technical Field

[0001] The present application relates to the technical field of detection equipment, and in particular to a spray can airtightness detection device. Background Art

[0002] Tinplate spray cans are usually used as packaging containers for aerosol products. In related technologies, Figure 1 , the body of the spray can mainly consists of a can body, a can lid and a bottom, where the can body is formed by rolling a sheet into a cylindrical shape and then welding, and both the can body and the can lid are formed by stamping with a blanking device.

[0003] During the production of the spray can body, the can lid and the bottom are respectively welded to the top and bottom of the can body by a welding device. To ensure the overall airtightness of the spray can body, before assembling the nozzle, it is necessary to detect the airtightness of the spray can body through a pressure resistance detection device to screen out and remove the cans with leaks in a timely manner. To avoid missed detections by the pressure resistance detection device, it is usually necessary to conduct spot checks on some of the cans after being detected by the pressure resistance detector.

[0004] Currently, the spot check of the spray can body is mainly carried out by performing an immersion pressure test on the can body. Specifically, after manually immersing the can body into the water tank, the inside of the can body is inflated and pressurized through an inflation device, and whether bubbles appear at the joints of the can body is observed to determine whether there is a leak in the can body. Then, the cans that have completed the test are manually taken out of the water tank and classified and placed.

[0005] In view of the above related technologies, the entire process of the immersion pressure test of the spray can body requires manual intervention, and the operation efficiency is relatively limited. Moreover, manual operation is prone to errors, resulting in missed detections or false detections during the immersion pressure test of the can body. Therefore, there is room for improvement. Summary of the Invention

[0006] In order to improve the overall efficiency of the immersion pressure test of the spray can body, the present application provides a spray can airtightness detection device.

[0007] A spray can airtightness detection device provided by the present application adopts the following technical solutions: A spray can airtightness detection device includes a control system, a conveying mechanism, an immersion pressure mechanism, a grasping mechanism, an image acquisition mechanism, a qualified product storage box, and an unqualified product storage box; The conveying mechanism includes a conveyor belt and a transfer rack. The conveyor belt is used to convey the cans, and the transfer rack is connected to the output end of the conveyor belt for receiving the cans output by the conveyor belt; The water immersion pressurization mechanism includes a water tank and an air-filled pressurization component; the air-filled pressurization component is located in the water tank, and the air-filled pressurization component is arranged to move up and down, and the air-filled pressurization component includes a plurality of horizontally arranged air-filled tubes; The grabbing mechanism is used to grab the tank body on the transfer rack and insert it into the inflation and pressurization component corresponding to the inflation tube, and is also used to drive the tank body to move up and down in the water tank along with the inflation and pressurization component; The image acquisition mechanism is supported above the water tank; The gripping mechanism and the image acquisition mechanism are both connected to the control system. The image acquisition mechanism is used to acquire the tank detection image and feed it back to the control system. The control system is used to determine whether the tank is leaking based on the image feedback from the image acquisition mechanism, and control the gripping mechanism to place qualified tanks and unqualified tanks into the qualified product storage box and the unqualified product storage box respectively.

[0008] By adopting the above technical scheme, when the tank body is subjected to water immersion and pressurized sampling inspection, the conveyor belt transports the tank body to be inspected to the transfer rack, and then the grabbing mechanism grabs the tank body on the intermediate rack and puts it on the inflation tube of the inflation and pressurization assembly. Subsequently, the grabbing mechanism drives the tank body to move downward with the inflation and pressurization assembly to immerse the tank body in the water tank, and performs inflation and pressurization operation on the corresponding tank body through the inflation tube. During this period, the image of the tank body in the detection process is obtained by the image acquisition mechanism located above the water tank and the image is fed back to the control system in real time. The control system determines whether the tank body is leaking according to the received image information, and then controls the grabbing mechanism to place the qualified tank body into the qualified product storage box and the leaking tank body into the unqualified product storage box, thereby realizing the automatic water immersion and pressurized sampling inspection of the tank body. Compared with the traditional water immersion and pressurized sampling inspection of the tank body, each link requires manual intervention, which effectively improves the efficiency of the water immersion and pressurized detection of the tank body, and is also conducive to reducing the false detection and missed detection caused by manual operation errors.

[0009] Preferably, a material baffle is vertically arranged at one end of the transfer frame away from the conveyor belt.

[0010] By adopting the above technical solution, the can body transported to the transfer rack via the conveyor belt is limited by the material blocking plate to prevent the can body from rolling off the transfer rack due to the inertia of movement, which is conducive to storing the can body output via the conveyor belt more stably on the transfer rack.

[0011] Preferably, the grasping mechanism includes a manipulator and a grasping part, and the grasping part is connected to the driving end of the manipulator; the grasping part includes a grasping bracket, and the grasping bracket is provided with a plurality of grasping electromagnets along its length direction, and the grasping electromagnets are used to hold the bottom of the tank body.

[0012] By adopting the above technical solution, when the can body is grabbed by the grabbing mechanism, after the grabbing part is driven by the manipulator to move to each electromagnet of the grabbing bracket and abuts against the bottom of the corresponding can body, the bottom of the corresponding can body is sucked and fixed by the electromagnet, so as to realize the stable grabbing of the can body; when the can body is released by the grabbing mechanism, the adsorption of the bottom of the can body by the electromagnet is released, and the release of the can body can be completed.

[0013] Preferably, the linear distance in the radial direction between adjacent charging pipes is greater than the outer diameter of the can body; the grabbing bracket is provided with a first sliding driving member corresponding to the grabbing electromagnet, and the first sliding driving member is used to drive the corresponding grabbing electromagnet to slide along the length direction of the grabbing bracket.

[0014] By adopting the above technical solution, the can bodies output to the transfer rack via the conveyor belt abut against each other. When the subsequent pressure detection mechanism performs detection, the mutually abutting can bodies are very likely to interfere with each other, causing difficulties in the judgment of the control system; through the setting of the first sliding driving member, when the grabbing mechanism grabs the frame on the transfer rack, the first sliding driving member is first used to drive the corresponding grabbing electromagnet to slide, so that each grabbing electromagnet respectively faces the can bodies abutting against each other on the transfer rack at this time; after the corresponding can body is grabbed by the grabbing electromagnet, the first sliding driving member is used to drive the grabbing electromagnet to slide, so as to drive the adjacent can bodies to move away from each other, which is convenient for the subsequent grabbing mechanism to sleave the can body onto the charging pipe corresponding to the pressurized inflation assembly, and at the same time limits the situation that the adjacent can bodies interfere with each other due to the too close distance when the subsequent inflation pressurization mechanism performs immersion inflation pressurization on the can body.

[0015] Preferably, a limiting component is supported on one side of the transfer rack. The limiting component includes a limiting bracket, and a limiting plate is supported on the side of the limiting bracket facing the transfer rack. When the conveyor belt conveys the can body to the transfer rack, the limiting plate is arranged opposite to the can cover end of the can body; The limiting bracket is further provided with a second sliding driving member for driving the limiting plate to move towards or away from the transfer rack.

[0016] By adopting the above technical solution, when the can body is conveyed to the transfer rack via the conveyor belt, it is very easy to cause the situation that the ends of adjacent can bodies cannot be neatly aligned, which affects the adsorption of the electromagnet of the subsequent grabbing mechanism on the bottom of the corresponding can body; through the setting of the limiting component, after the manipulator of the subsequent grabbing mechanism drives each grabbing electromagnet of the grabbing bracket to move and approach the corresponding can body, the second sliding driving member at the limiting bracket is used to drive the limiting plate to move towards the transfer rack, and the limiting plate is used to push each can body, so that the can cover can abut tightly against the corresponding grabbing electromagnet, ensuring that the grabbing electromagnet can stably hold each can body.

[0017] Preferably, a water filter net is supported at the bottom of the inner cavity of both the qualified product storage box and the unqualified product storage box, and a gap is left between the water filter net and the bottom of the corresponding box.

[0018] By adopting the above technical solution, after the tank body inspection is completed, when the tank body is placed in the corresponding box body through the grabbing mechanism, the tank cover port of the grabbing mechanism drives the grabbing tank body to abut against the water filter net of the corresponding box body, and then the grabbing mechanism releases the grip of the tank body. The residual water droplets on the periphery of the tank body can be discharged into the bottom of the box body through the water filter net, which is conducive to draining the tank body.

[0019] Preferably, the inflation and pressurization assembly further includes a pressurization bracket and a second lifting drive member; the inflation tube is horizontally installed on the pressurization bracket; and the second lifting drive member is used to drive the pressurization bracket to move up and down.

[0020] By adopting the above technical solution, the second lifting drive member is used to drive the pressurizing bracket to drive the inflation tube to move up and down, so that the inflation tube can move back and forth in and out of the water tank, making it convenient for the inflation tube to cooperate with the water tank to perform water immersion pressurization detection on the tank body.

[0021] Preferably, an annular connecting plate is sleeved on the outer periphery of the inflation tube, and a side of the annular connecting plate facing away from the pressurizing bracket is covered with a flexible rubber layer, and the flexible rubber layer is used for abutting against the port of the tank body and the tank cover.

[0022] By adopting the above technical solution, the grasping mechanism inserts the grasped tank body into the corresponding inflation tube of the inflation and pressurization assembly, and at the same time, makes the tank cover port of the tank body abut against the flexible sealing layer of the annular connecting plate, so as to realize effective sealing of the tank cover port, reduce the leakage of gas filled into the tank body by the subsequent inflation tube through the tank cover port, and affect the subsequent inflation and pressurization of the tank body by the inflation tube, and at the same time, avoid the situation where bubbles are generated when the gas filled into the tank body leaks through the tank cover port, causing misjudgment of the control system.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the grabbing mechanism accurately grabs the tank from the middle frame and puts it into the inflation tube of the inflation and pressurization component, the grabbing mechanism drives the tank to move down synchronously with the inflation and pressurization component, so that the tank is completely immersed in the water tank. At the same time, the inflation tube of the inflation and pressurization component inflates and pressurizes the inside of the tank. During this process, the image acquisition mechanism takes real-time photos of the underwater state of the tank and feeds the image back to the control system. The control system determines whether there is a leak in the tank based on the image information, and then drives the grabbing mechanism to place the qualified tank and the unqualified tank into the corresponding boxes respectively. The entire detection process does not require manual intervention, which significantly improves the detection efficiency, and effectively avoids the misjudgment and missed detection problems that may be caused by manual operation.

[0024] 2. By arranging a first sliding drive on the grasping bracket to drive the grasping electromagnet to slide along the length direction of the grasping bracket, after the grasping mechanism adsorbs and fixes the tank body of the transfer rack through the grasping electromagnet on the grasping bracket, the corresponding grasping electromagnet is driven by the first sliding drive to slide a certain distance along the length direction of the grasping bracket, so that an appropriate interval is maintained between adjacent tank bodies, which is convenient for sleeving the tank body onto the corresponding charging pipe, and at the same time, it is beneficial to reduce the interference between the mutually abutted tank bodies when the tank bodies are subsequently detected by the immersion pressurizing mechanism.

[0025] 3. By arranging an annular connecting plate on the outer periphery of the charging pipe and covering a flexible rubber layer on one side of the annular connecting plate, when the grasping mechanism sleeves the tank body onto the charging pipe, the lid end of the tank body can tightly abut against the flexible rubber layer, thereby realizing effective sealing of the lid port of the tank body. Significantly reduce the gas leakage caused by poor sealing of the lid port of the tank body, ensure stable pressurization of the inside of the tank body by the charging pipe. At the same time, it avoids the situation of misjudgment of the control system caused by the generation of bubbles due to the leakage of gas from the lid end. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the spray can body used in this application.

[0027] Figure 2 It is a schematic structural diagram of the spray can sealing detection device used in this application.

[0028] Figure 3 It is a schematic diagram of the conveyor belt and the transfer rack used in this application.

[0029] Figure 4 It is a schematic diagram of the immersion pressurizing mechanism used in this application.

[0030] Figure 5 It is a schematic diagram of the charging pipe used in this application.

[0031] Figure 6 It is a schematic diagram of the grasping mechanism used in this application.

[0032] Figure 7 is Figure 6 An enlarged schematic diagram of part A in

[0033] Figure 8 It is a schematic diagram of the state when the first sliding drive of the grasping part drives the corresponding electromagnetic part to slide in this application.

[0034] Figure 9 It is a schematic diagram of the structure of the water filtering net used in this application.

[0035] Description of the Reference Numerals: 1. Tank body; 11. Tank body; 12. Tank cover; 13. Tank bottom; 2. Conveyor mechanism; 21. Conveyor belt; 22. Transfer frame; 221. Baffle plate; 222. Limit support; 223. Limit plate; 224. Sliding cylinder; 3. Immersion and pressurization mechanism; 31. Water tank; 32. Inflatable pressurization assembly; 320. Pressurization support; 321. Inflatable pipe; 322. Ring-shaped connecting plate; 323. Flexible rubber layer; 4. Gripping mechanism; 41. Manipulator; 42. Gripping part; 421. Gripping support; 422. Gripping electromagnet; 423. Limit guide rail; 424. Slide block; 425. Electric telescopic rod; 5. Image acquisition mechanism; 51. Mounting bracket; 52. Camera; 6. Qualified product storage box; 7. Unqualified product storage box; 8. Water filter net; 81. Holding rod; 82. Baffle frame. Detailed implementation manners

[0036] The following further describes the present application in detail with reference to the Figures 1-9 accompanying drawings.

[0037] Refer to Figure 1 , the tank body 1 of the spray can includes a tank body 11, a tank cover 12 and a tank bottom 13, and each component is made of tinplate.

[0038] The embodiment of the present application discloses a spray can sealing detection device. Refer to Figure 2 , including a control system, a conveyor mechanism 2, an immersion and pressurization mechanism 3, a gripping mechanism 4, an image acquisition mechanism 5, a qualified product storage box 6 and an unqualified product storage box 7.

[0039] Refer to Figure 2 and Figure 3 , the conveyor mechanism 2 includes a conveyor belt 21 and a transfer frame 22. The conveyor belt 21 is used to convey the to-be-detected tank body 1 placed horizontally. Baffle plates are provided on both sides of the conveyor belt 21 to prevent the tank body 1 from slipping off both sides of the conveyor belt 21 during the conveying process. The transfer frame 22 is located at the output end of the conveyor belt 21 and is connected to the output end of the conveyor belt 21 for receiving the tank body 1 transmitted by the conveyor belt 21. A baffle plate 221 is vertically connected to one end of the transfer frame 22 away from the conveyor belt 21. The baffle plate 221 is used to limit the tank body 1 conveyed by the conveyor belt 21 onto the transfer frame 22 to prevent the tank body 1 from rolling out of the transfer frame 22 due to inertia.

[0040] Refer to Figure 4 and Figure 5The water immersion pressurizing mechanism 3 includes a water tank 31 and an air-filled pressurizing assembly 32. The water tank 31 is rectangular in shape. The air-filled pressurizing assembly 32 is located on one side of the inner cavity of the water tank 31. The air-filled pressurizing assembly 32 includes a pressurizing bracket 320 and a lifting drive. The pressurizing bracket 320 is equipped with a plurality of air-filled tubes 321 along its length. The air-filled tubes 321 are arranged horizontally, and the radial straight-line distance between adjacent air-filled tubes 321 is greater than the outer diameter of the tank body 1. The air-filled tube 321 is used to inflate and pressurize the inside of the corresponding tank body 1. An annular sealing plate is sleeved and fixed on the outer periphery of the air-filled tube 321. A flexible rubber layer 323 is connected to the side of the annular sealing plate away from the pressurizing bracket 320. The flexible rubber layer 323 is used to abut against the end of the tank cover 12 of the tank body 1. The lifting drive is used to drive the pressurizing bracket 320 to move up and down in the water tank 31. The lifting drive component includes two lifting cylinders, which are vertically supported upward on the side of the water tank 31. The top of the pressurized bracket 320 is bent to form an outwardly extending connection part. The piston rods of the two lifting cylinders are connected to the connection part at the top of the pressurized bracket 320, thereby realizing the driving connection between the lifting drive component and the pressurized bracket 320.

[0041] Reference Figure 6 and Figure 7 The grabbing mechanism 4 is used to grab the tank body 1 at the transfer rack 22 and respectively insert it into the various inflation tubes 321 of the pressurized inflation component, and is also used to drive the grabbed tank body 1 to move up and down in the water tank 31 along with the pressurized bracket 320. The grabbing mechanism 4 includes a manipulator 41 and a grabbing part 42. In this embodiment, the manipulator 41 adopts a six-axis manipulator 41 with a waterproof function. The grabbing part 42 is located at the driving end of the manipulator 41. Specifically, the grabbing part 42 includes a grabbing bracket 421, and the grabbing bracket 421 is connected to the driving end of the manipulator 41. A plurality of grabbing electromagnets 422 are installed on the grabbing bracket 421. The plurality of grabbing electromagnets 422 are evenly distributed along the length direction of the grabbing bracket 421. The grabbing electromagnets 422 are used to suck and grab the tank bottom 13 at the tail end of the corresponding tank body 1.

[0042] Reference Figure 7 and Figure 8 , the grabbing bracket 421 is provided with a limiting guide rail 423 corresponding to a plurality of grabbing brackets 421, the length direction of the limiting guide rail 423 is arranged parallel to the grabbing bracket 421, and the two ends of the limiting guide rail 423 extend to the two ends of the grabbing bracket 421 respectively. The grabbing electromagnets 422 are all slidably connected to the limiting guide rail 423 through a slider 424. The grabbing bracket 421 is provided with a plurality of first sliding drive members corresponding to the grabbing electromagnets 422 at each location, and the first sliding drive member is used to drive the corresponding grabbing electromagnet 422 to slide along the limiting guide rail 423. Specifically, the first sliding drive member includes an electric telescopic rod 425 fixed on the grabbing bracket 421, the length direction of the electric telescopic rod 425 is parallel to the length direction of the limiting guide rail 423, and the piston rod of the electric telescopic rod 425 is connected to the slider 424 of the corresponding grabbing electromagnet 422.

[0043] Referring to Figure 3 、 Figure 6 and Figure 7 When the grasping mechanism 4 grasps the tank body 1 of the transfer rack 22 and slews it onto each gas charging pipe 321 of the pressurizing and inflating assembly, the manipulator 41 drives the grasping bracket 421 to move close to the bottom 13 of the tank body 1 of the transfer rack 22. The electric telescopic rod 425 drives the slider 424 of the corresponding grasping electromagnet 422 to slide along the limit guide rail 423, so that each grasping electromagnet 422 on the grasping bracket 421 is opposite to the bottom 13 of each tank body 1 that is in mutual contact on the transfer rack 22 at this time; then the grasping electromagnet 422 sucks and fixes the opposite bottom 13 of the tank body 1 to complete the grasping of the tank body 1; then the manipulator 41 drives the grasping part 42 to drive the grasped tank body 1 to move to the gas charging pipe 321 of the pressurizing and inflating assembly. After that, the electric telescopic rod 425 drives the corresponding grasping electromagnet 422 to slide along the limit guide rail 423 for an appropriate distance, so that an appropriate distance is spaced between the adjacent tank bodies 1 grasped by the grasping part 42, and the tank body 1 is opposite to the corresponding gas charging pipe 321. Then the manipulator 41 drives the grasping part 42 to drive the grasped tank body 1 to slews onto the gas charging pipe 321, and the port of the tank cover 12 of the tank body 1 abuts against the flexible sealing layer of the annular connecting plate 322; then the two lifting cylinders outside the water tank 31 drive the pressurizing bracket 320 to drive the gas charging pipe 321 to move downward, and at the same time the manipulator 41 drives the grasping part 42 to drive the grasped tank body 1 to move downward together with the gas charging pipe 321 until the tank body 1 is submerged underwater in the water tank 31 together with the gas charging pipe 321, and the gas charging pipe 321 inflates and pressurizes the corresponding tank body 1 for detection.

[0044] Driving the corresponding grasping electromagnet 422 to slide along the limit guide rail 423 through the telescopic electric cylinder. On the one hand, it is beneficial to space an appropriate distance between the tank bodies 1 in mutual contact on the transfer rack 22, so as to facilitate the grasping mechanism 4 to slews the tank body onto the corresponding gas charging pipe 321; on the other hand, it is beneficial to limit the situation that the adjacent tank bodies 1 interfere with each other when the subsequent inflation and pressurization of the tank body 1 are carried out due to mutual contact.

[0045] By making the port of the tank cover 12 of the tank body 1 abut against the flexible rubber layer 323 of the outer peripheral annular connecting plate of the gas charging pipe 321, it is beneficial to realize the sealing of the port of the tank cover 12 of the tank body 1 and limit the situation that the gas filled into the tank body 1 by the subsequent gas charging pipe 321 leaks through the port of the tank cover 12 of the tank body 1.

[0046] Referring to Figure 3 and Figure 5, a limiting component is arranged on the side of the transfer rack 22. The limiting component includes a limiting bracket 222 supported on the side of the transfer rack 22. A limiting plate 223 is supported on the side of the limiting bracket 222 facing the transfer rack 22. When the conveyor belt 21 transports the tank body 1 onto the transfer rack 22, the end of the tank cover 12 of the tank body 1 is arranged opposite to the limiting plate 223. The limiting bracket 222 is also provided with a second sliding driving member, and the second sliding driving member is used to drive the limiting plate 223 to move towards or away from the transfer rack 22. Specifically, the second sliding driving member includes two sliding cylinders 224 horizontally supported outside the limiting bracket 222, and the piston rods of the two sliding cylinders 224 are both connected to the limiting plate 223.

[0047] Subsequently, when the manipulator 41 drives the grasping part 42 to move so that the grasping electromagnet 422 is opposite to the bottom 13 of each tank body 1 on the transfer rack 22, the sliding cylinder 224 of the limiting component on the side of the transfer rack 22 drives the limiting plate 223 to move towards the transfer rack 22, so as to push each tank body 1 on the transfer rack 22 to abut against the corresponding grasping electromagnet 422 of the grasping part 42 respectively, and then the electromagnet sucks and fixes the bottom 13 of the corresponding tank body 1, which is beneficial to reducing the situation that the adsorption and fixation of the grasping electromagnet 422 are affected due to the misalignment of the front and rear ends of adjacent tank bodies 1.

[0048] Refer to Figure 4 , Figure 6 and Figure 7 , the image acquisition mechanism 5 includes a mounting bracket 51 and a camera 52. The mounting bracket 51 is supported above the water tank 31, and the camera 52 is vertically downward mounted at the bottom of the mounting bracket 51. The camera 52, the manipulator 41 of the grasping mechanism 4, and the grasping electromagnet 422 of the grasping mechanism 4 are all electrically connected to the control system. The camera 52 is used to acquire the image of the tank body 1 during the immersion pressure test and feedback it to the control system. The control system is used to judge whether there is leakage at each splicing part of the detected tank body 1 according to the image fed back by the camera 52, and control the manipulator 41 of the grasping mechanism 4 to cooperate with the grasping electromagnet 422 of the grasping part 42 to put the qualified tank bodies 1 and unqualified tank bodies 1 into the qualified product storage box 6 and the unqualified product storage box 7 respectively.

[0049] Refer to Figure 1 and Figure 9 , filter meshes 8 are arranged in the inner cavities of both the qualified product storage box 6 and the unqualified product storage box 7. There is a gap between the filter mesh 8 and the bottom of the box body. Frame-shaped support plates are welded to the inner peripheries of the qualified product storage box 6 and the unqualified product storage box 7 corresponding to the filter mesh 8. The bottom of the filter mesh 8 is lapped on the frame-shaped support plates, so as to stably support the filter mesh 8 in the corresponding box body.

[0050] Subsequently, when the qualified and unqualified cans 1 are respectively placed into the qualified product storage box 6 and the unqualified product storage box 7 by the manipulator 41 of the grasping mechanism 4 cooperating with the grasping electromagnet 422 of the grasping part 42, after the can 1 is moved into the corresponding box, the can 1 is oriented downward and the port of the can lid 12 abuts against the water filter net 8 of the corresponding box, so that the water droplets remaining on the outer periphery of the can 1 can fall into the bottom of the box through the water filter net 8, thereby realizing the draining of the water droplets remaining on the outer periphery of the can 1.

[0051] Grasping rods 81 are vertically welded upward at both ends of the water filter net 8, and a retaining frame 82 is connected to the outer periphery of the water filter net 8. The setting of the grasping rods 81 facilitates lifting the water filter net 8 and the cans 1 stacked on the water filter net 8 out of the corresponding box through the grasping rods 81. The retaining frame 82 provided on the outer periphery of the water filter net 8 can limit the cans 1 on the water filter net 8, restricting the situation where the cans 1 on the water filter net 8 fall off the water filter net 8 when the water filter net 8 is lifted upward.

[0052] The implementation principle of the embodiment of the present application is as follows: when the cans 1 are subjected to immersion pressurization sampling inspection, the following steps are included: S1: The cans 1 to be inspected are conveyed into position: Refer to Figure 1 , and the conveyor belt 21 conveys the cans 1 to be sampled to the transfer rack 22.

[0053] S2: Grasping the cans 1: Refer to Figure 3 、 Figure 6 and Figure 7 , the manipulator 41 drives the grasping part 42 to move to face the bottom 13 of each can 1 on the transfer rack 22. The electric telescopic rod 425 on the grasping part 42 drives the corresponding grasping electromagnet 422 to slide along the limit guide rail 423, so that the grasping electromagnets 422 at each part of the grasping part 42 face the cans 1 in contact with each other at each part of the transfer rack 22 respectively; the sliding cylinder 224 of the side limit component of the transfer rack 22 drives the limit plate 223 to move towards the transfer rack 22, so as to push each can 1 on the transfer rack 22 to abut against the corresponding grasping electromagnet 422 of the grasping part 42 respectively, and the grasping electromagnet 422 sucks and fixes the bottom 13 of the corresponding can 1.

[0054] S3: Transferring the cans 1: Refer to Figure 4 、 Figure 6 and Figure 8, after the manipulator 41 drives the grasping part 42 to drive the grasped tank body 1 to move to each gas filling pipe 321 of the gas filling and pressurizing assembly 32, the electric telescopic rod 425 on the grasping part 42 drives the corresponding grasping electromagnet 422 to slide along the limit guide rail 423, so that the tank body 1 grasped by the grasping electromagnet 422 faces the corresponding gas filling pipe 321. Then, the manipulator 41 drives the grasping part 42 to drive the tank body 1 to be sleeved into the corresponding gas filling pipe 321, and the port of the tank cover 12 of the tank body 1 abuts against the flexible rubber layer 323 of the circumferential connecting plate 322 on the outer periphery of the gas filling pipe 321.

[0055] S4: Immersion pressurization of the tank body 1: Refer to Figure 4 , Figure 6 and Figure 8 , the lifting driving member of the gas filling and pressurizing assembly 32 drives the pressurizing support 320 to drive each gas filling pipe 321 to move downward. During this period, the manipulator 41 drives the grasping part 42 to drive the grasped tank body 1 to move downward synchronously with the gas filling pipe 321 until the tank body 1 is immersed under the water in the water tank 31; the gas filling pipe 321 fills and pressurizes the tank body 1. During the gas filling and pressurization, the camera 52 of the image acquisition mechanism 5 feeds back the image of the tank body 1 during gas filling and pressurization to the control system in real time.

[0056] S5: Classified storage of the tank body 1: Refer to Figure 2 , Figure 4 and Figure 6 , the control system judges whether the tank body 1 leaks according to the image fed back by the camera 52 of the image acquisition mechanism 5. Subsequently, the lifting driving member of the gas filling and pressurizing assembly 32 drives the pressurizing support 320 to drive each gas filling pipe 321 to move upward. During this period, the manipulator 41 drives the grasping part 42 to drive the grasped tank body 1 to move upward synchronously with the gas filling pipe 321 until the tank body 1 is removed from the water surface; after the manipulator 41 cooperates with the grasping part 42 to drive the tank body 1 to move to the corresponding box and the end of the tank cover 12 of the tank body 1 abuts against the water filter net 8 of the box, the adsorption on the bottom 13 of the corresponding tank body 1 is released by the grasping electromagnet 422, and the classified storage of the tank body 1 is completed.

[0057] This application can realize the automatic immersion pressurization detection of the sampled tank body 1. The detection process does not require manual intervention, effectively improving the immersion pressurization detection efficiency of the tank body 1.

[0058] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A spray can sealing detection device, comprising a control system, a conveying mechanism (2), a water immersion pressurizing mechanism (3), a grasping mechanism (4), an image acquisition mechanism (5), a qualified product storage box (6) and a failed product storage box (7); The conveying mechanism (2) comprises a conveyor belt (21) and a transfer frame (22), wherein the conveyor belt (21) is used to convey the can body (1), and the transfer frame (22) is connected to the output end of the conveyor belt (21) and is used to receive the can body (1) output by the conveyor belt (21); The water immersion pressurizing mechanism (3) comprises a water tank (31) and an air-inflating pressurizing component (32); the air-inflating pressurizing component (32) is located in the water tank (31), and the air-inflating pressurizing component (32) is arranged to move up and down, and the air-inflating pressurizing component (32) comprises a plurality of horizontally arranged air-inflating tubes (321); The grabbing mechanism (4) is used to grab the tank body (1) located on the intermediate transfer rack (22) and insert it into the inflation and pressurization component (32) corresponding to the inflation tube (321), and is also used to drive the tank body (1) to move up and down in the water tank (31) along with the inflation and pressurization component (32); The image acquisition mechanism (5) is supported above the water tank (31); The gripping mechanism (4) and the image acquisition mechanism (5) are both connected to the control system. The image acquisition mechanism (5) is used to acquire a detection image of the tank body (1) and feed it back to the control system. The control system is used to determine whether the tank body (1) is leaking based on the image fed back by the image acquisition mechanism (5), and control the gripping mechanism (4) to place qualified tank bodies (1) and unqualified tank bodies (1) into the qualified product storage box (6) and the unqualified product storage box (7), respectively.

2. The spray can sealing detection device according to claim 1, characterized in that: A material blocking plate (221) is vertically arranged at one end of the transfer frame (22) away from the conveyor belt (21).

3. The spray can airtightness detection device according to claim 2, wherein: The gripping mechanism (4) comprises a manipulator (41) and a gripping portion (42), wherein the gripping portion (42) is connected to a driving end of the manipulator (41); the gripping portion (42) comprises a gripping bracket (421), wherein the gripping bracket (421) is provided with a plurality of gripping electromagnets (422) along its length direction, and the gripping electromagnets (422) are used to hold the tank bottom (13) of the tank body (1).

4. A spray can airtightness detection device according to claim 3, characterized in that: The radial straight-line distance between adjacent inflation tubes (321) is greater than the outer diameter of the tank body (1); the grabbing bracket (421) is provided with a first sliding drive member corresponding to the grabbing electromagnet (422), and the first sliding drive member is used to drive the corresponding grabbing electromagnet (422) to slide along the length direction of the grabbing bracket (421).

5. The spray can airtightness detection device according to claim 3, characterized in that: A limiting assembly is supported on one side of the intermediate transfer frame (22), and the limiting assembly includes a limiting bracket (222). A limiting plate (223) is supported on one side of the limiting bracket (222) facing the intermediate transfer frame (22). When the conveyor belt (21) conveys the tank body (1) to the intermediate transfer frame (22), the limiting plate (223) is arranged opposite to the tank cover (12) end of the tank body (1); The limiting bracket (222) is also provided with a second sliding drive member for driving the limiting plate (223) to move towards or away from the intermediate transfer rack (22).

6. The spray can sealing performance detection device according to claim 1, characterized in that: A water filter net (8) is supported at the bottom of the inner cavity of both the qualified product storage box (6) and the unqualified product storage box (7), and a gap is left between the water filter net (8) and the bottom of the corresponding box.

7. The spray can sealing detection device according to claim 1, wherein: The inflation and pressurizing assembly (32) further comprises a pressurizing support (320) and a second lifting drive member; the inflation tube (321) is horizontally mounted on the pressurizing support (320); and the second lifting drive member is used to drive the pressurizing support (320) to move up and down.

8. A spray can airtightness detection device according to claim 7, characterized in that: The outer periphery of the inflation tube (321) is sleeved with an annular connecting plate (322), and the side of the annular connecting plate (322) facing away from the pressurizing bracket (320) is covered with a flexible rubber layer (323), and the flexible rubber layer (323) is used for abutting against the port of the tank body (1) and the tank cover (12).

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