Water storage tank multi-point full-automatic air tightness detection equipment

Abstract

The application discloses a kind of water storage tank multi-point full-automatic air tightness detection equipment, including carrier, press mechanism, first inflation mechanism, second inflation mechanism, uncovering mechanism, cover mechanism and discharging mechanism, press mechanism is used to be pressed tightly in carrier with water storage tank, first inflation mechanism includes first cylinder and first inflation assembly, first inflation assembly is oppositely distributed with water valve on water storage tank;Second inflation mechanism includes second cylinder and second inflation assembly, second inflation assembly is oppositely distributed with water inlet on water storage tank;Uncovering mechanism is used to push box cover from the state of closure to the first open state, cover mechanism is used to push box cover from the first open state to the second open state;Discharging mechanism is used to accept the water storage tank of test qualified that is lifted by press mechanism and is removed to specified position and is discharged.The application improves the continuity, stability and detection efficiency of water storage tank air tightness detection, and adapts to the detection needs of mass production line.

Description

Technical Field

[0001] This invention relates to the field of product airtightness testing technology, and in particular to a multi-point fully automatic airtightness testing device for water storage tanks. Background Technology

[0002] The water tanks that come with robotic vacuum cleaners often use a two-part injection-molded shell structure, integrally formed by ultrasonic welding; such as Figure 1 As shown, the water tank 2 has a push-open, spring-loaded, automatically sealing outlet valve 201 on the front side. A water inlet 202 is located on the right end of the water tank 2, and a hinged flip-up cover 203 is connected to the inlet 202. The cover 203 also integrates a one-way vent 2031. The ultrasonic weld seams, the cover 203's closing position, the one-way vent 2031, and the outlet valve 201 of the water tank 2 are all prone to air leakage. Inadequate airtightness will directly lead to water seepage, leakage, and internal pressure imbalance in the water tank. Therefore, airtightness testing must be performed on these multiple points before the water tank leaves the factory.

[0003] Currently, the airtightness testing of this type of water storage tank is conducted manually or semi-automatically, without dedicated fully automatic testing equipment. The existing testing process relies entirely on manual operation. The tank to be tested is placed on a simple workbench and manually positioned and tightened. During testing, the tank cover and outlet valve are tested separately. Specifically, to test the airtightness of the tank cover, the outlet valve is manually pushed out to open, and pressure is maintained while air is introduced to determine if there are any leaks in the cover, the one-way vent, or the ultrasonic weld. To test the airtightness of the outlet valve, the tank cover is manually opened, and pressure is maintained through the water inlet to determine if there are any leaks in the outlet valve or the ultrasonic weld. The existing testing method has at least the following technical drawbacks: First, the entire testing process requires manual step-by-step completion, from loading the water tank and manually positioning and tightening it, to step-by-step testing of the airtightness of the tank cover and water outlet valve, and then to manual sorting of qualified and unqualified products. Each process relies on individual manual operation, making the steps cumbersome and unable to achieve continuous assembly line testing. Testing a single water tank is time-consuming, making it difficult to meet the high-efficiency production testing needs of large-scale water tank production, significantly restricting production progress. Second, when testing airtightness, manual inflation and sealing are unstable, easily leading to misjudgments and missed detections, and the testing accuracy cannot be guaranteed. Therefore, it is necessary to improve the existing technology to overcome these shortcomings. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a multi-point fully automatic airtightness testing device for water storage tanks, so as to overcome the shortcomings of the existing technology in terms of low efficiency and inability to guarantee the accuracy of airtightness testing of water storage tanks.

[0005] The technical solution adopted by this invention to solve its technical problem is: a multi-point fully automatic airtightness testing device for water storage tanks, comprising: A carrier capable of reciprocating between a loading station and a testing station, the carrier being used to load a water tank to be tested; The pressing mechanism, mounted above the test station, is used to press the water tank firmly onto the carrier; The first inflation mechanism includes a first cylinder and a first inflation component driven and connected to the first cylinder, wherein the first inflation component is distributed relative to the water outlet valve on the water storage tank. The second inflation mechanism includes a second cylinder and a second inflation assembly driven and connected to the second cylinder. The second inflation assembly is distributed opposite to the water inlet on the water tank. The water tank is also equipped with a flip-top lid. The second inflation mechanism has two working states: a press-fit sealing state, in which the second cylinder drives the second inflation assembly to abut against the lid when the lid is closed on the water inlet; and an inflation test state, in which the second cylinder drives the second inflation assembly to seal and insert into the water inlet after the lid is flipped open from the water inlet. The lid opening mechanism includes a third cylinder and a first push rod driven and connected to the third cylinder. The first push rod is distributed at an obtuse angle to the plane where the lid is in the closed state. The third cylinder is used to drive the first push rod to push the lid from the closed state to the first open state. A flip-top mechanism is used to push the lid from a first open state to a second open state; The feeding mechanism, the pressing mechanism is also used to grab the tested and qualified water tanks, lift them and hand them over to the feeding mechanism, the feeding mechanism is used to move the tested and qualified water tanks to the designated position for feeding.

[0006] As a further improvement of the present invention, the multi-point fully automatic airtightness testing equipment for water storage tanks also includes a test platform, on which a fourth cylinder is installed. The carrier is slidably installed on the test platform and driven by the fourth cylinder. The fourth cylinder is used to drive the carrier to reciprocate between the loading station and the testing station.

[0007] As a further improvement of the present invention, the carrier is provided with a positioning fixture and a positioning mechanism. The positioning fixture is used to support the water storage tank. The positioning mechanism includes a gripper cylinder and two gripping blocks. The two gripping blocks are slidably mounted on the carrier and are respectively located on opposite sides of the positioning fixture. The two grippers on the gripper cylinder are respectively drivenly connected to the two gripping blocks.

[0008] As a further improvement of the present invention, the pressing mechanism includes a bracket, a fifth cylinder, a floating pressure head, and a first vacuum suction cup. The fifth cylinder is mounted vertically on the bracket, the floating pressure head is mounted vertically on the bottom of the connecting plate at the output end of the fifth cylinder, and the first vacuum suction cup is mounted on the floating pressure head.

[0009] As a further improvement of the present invention, the first inflation assembly includes a first air passage block connected to an external gas compression device and a gas pressure detection device. The first air passage block is installed on the output end of the first cylinder, and the first air passage block is provided with a first inflation plug, on which a first sealing component is fitted.

[0010] As a further improvement of the present invention, the second inflation assembly includes a second air passage block connected to an external gas compression device and a gas pressure detection device. The second air passage block is installed on the output end of the second cylinder, and the second air passage block is provided with a second inflation plug, on which a second sealing component is fitted.

[0011] As a further improvement of the present invention, one end of the tank cover is hinged to the water storage tank, and the other end of the tank cover is provided with an opening buckle, and the first push rod and the opening buckle are distributed opposite to each other.

[0012] As a further improvement of the present invention, the flip-top mechanism includes a sixth cylinder and a second push rod driven and connected to the sixth cylinder, the second push rod being distributed relative to the lid in the first open state.

[0013] As a further improvement of the present invention, the unloading mechanism includes a linear drive module and a material picking component mounted on the linear drive module. The material picking component is inclinedly disposed on the rear side of the floating pressure head. The material picking component includes a seventh cylinder, a mounting plate fixed to the output end of the seventh cylinder, and a second vacuum suction cup mounted on the mounting plate.

[0014] As a further improvement of the present invention, the first inflation mechanism, the second inflation mechanism, the opening mechanism and the flipping mechanism are all mounted on the carrier.

[0015] The beneficial effects of this invention are: 1. This invention provides a multi-point fully automatic airtightness testing device for water storage tanks. Through the organic integration of a carrier, a pressing mechanism, a dual inflation mechanism, a lid opening mechanism, a lid flipping mechanism, and a feeding mechanism, it effectively solves the core problems in existing testing methods, such as process interference, insufficient testing accuracy, easy product damage, and high labor intensity. It comprehensively improves the continuity, stability, and efficiency of water storage tank airtightness testing, ensures the accuracy of multi-point airtightness testing, effectively eliminates misjudgments and missed detections caused by manual operation, reduces the risk of unqualified products flowing out, and is suitable for the testing needs of large-scale production lines. At the same time, it simplifies the overall operation process of the equipment, improves the practicality and reliability of the equipment, and provides an efficient, accurate, and automated solution for water storage tank airtightness testing.

[0016] 2. The second inflation mechanism in this invention has two working states: pressure sealing and inflation testing. It can be adapted to the testing requirements of the water inlet and the tank cover of the water storage tank. No manual intervention is required for sealing and switching, which improves the automation and sealing performance of the test.

[0017] 3. This invention first pushes the tank lid from the closed state to the first open state through the opening mechanism, and then the flip-top mechanism further pushes the tank lid from the first open state to the second open state. The step-by-step opening method of the water tank lid not only solves the technical problem of the lid being too tight and difficult to open, but also achieves a smooth and controllable opening process, reducing damage and loss to the tank lid. At the same time, it accurately adapts to the sequential testing process of the first inflation mechanism and the second inflation mechanism, ensuring a smooth connection of the entire testing process, further improving the stability and continuity of equipment testing, and ensuring testing efficiency and product quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a 3D view of the water storage tank; Figure 2 This is a perspective view of the multi-point fully automatic airtightness testing device for water storage tanks of the present invention; Figure 3 This is a perspective view of the vehicle and its first inflation mechanism, second inflation mechanism, opening mechanism and flipping mechanism in this invention; Figure 4 This is a perspective view of the vehicle and its first inflation mechanism, second inflation mechanism, opening mechanism and flipping mechanism in this invention from another angle. Figure 5 This is a perspective view of the first inflation mechanism in this invention; Figure 6 This is a perspective view of the second inflation mechanism in this invention; Figure 7 This is a perspective view of the test platform and its pressing mechanism and feeding mechanism in this invention.

[0020] Referring to the accompanying drawings, the following explanations are provided: 1. Carrier; 101. Positioning fixture; 2. Water tank; 201. Water outlet valve; 202. Water inlet; 203. Tank cover; 2032. Cover opening buckle; 2031. One-way air return hole; 3. First cylinder; 4. Second cylinder; 5. Third cylinder; 6. First push rod; 7. Test platform; 8. Fourth cylinder; 9. Gripper cylinder; 10. Grip block; 11. Bracket; 12. Fifth cylinder; 1201. Connecting plate; 13. Floating pressure head; 14. First vacuum suction cup; 15. First air passage block; 1501. First inflation plug; 16. First sealing component; 17. Second air passage block; 1701. Second inflation plug; 18. Second sealing component; 19. Sixth cylinder; 20. Second push rod; 21. Linear drive module; 22. Seventh cylinder; 23. Mounting plate; 24. Second vacuum suction cup. Detailed Implementation

[0021] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0023] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0024] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0025] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0026] This invention provides a multi-point fully automatic airtightness testing device for water storage tanks, used for testing such... Figure 1 The water storage tank 2 shown undergoes a fully automatic airtightness test. The water storage tank 2 is a structure formed by ultrasonic welding of two injection-molded shell halves. It is equipped with a push-open, spring-loaded, and automatically sealing water outlet valve 201 on the front side. The water storage tank 2 is equipped with a water inlet 202 on the right end. A flip-up tank cover 203 is hinged to the water inlet 202, and a one-way air return hole 2031 is integrated on the tank cover 203.

[0027] See Figures 1 to 7 The present invention provides a multi-point fully automatic airtightness testing device for water storage tanks, comprising: a carrier 1, a pressing mechanism, a first inflation mechanism, a second inflation mechanism, a lid opening mechanism, a lid flipping mechanism, and a feeding mechanism. The carrier 1 is used to load the water storage tank 2 to be tested. The present invention is equipped with a loading station and a testing station. The carrier 1 can reciprocate between the loading station and the testing station, and the pressing mechanism is mounted above the testing station.

[0028] At the loading station, the water tank 2 to be tested is placed on the carrier 1 by a person or a robot. The carrier 1 carries the water tank 2 to the testing station, and the water tank 2 is pressed tightly onto the carrier 1 by a pressing mechanism. Then the airtightness test is started.

[0029] This invention features two inflation mechanisms: a first inflation mechanism and a second inflation mechanism. The first inflation mechanism inflates the water tank 2 through the outlet valve 201 to detect leaks in the tank cover 203, the one-way vent 2031, or the ultrasonic weld. The second inflation mechanism inflates the water tank 2 through the inlet 202 to detect leaks in the outlet valve 201 and the ultrasonic weld. These two inflation mechanisms work together, each with its own focus, achieving precise detection of different leak points in designated areas. This avoids the drawbacks of single inflation detection, which cannot accurately locate leaks, effectively preventing missed or false detections due to hidden leaks. Furthermore, the dual inflation mechanism is integrated with the overall automated structure of the equipment, eliminating the need for manual switching of inflation points and detection modes, significantly improving detection efficiency and ensuring comprehensive and accurate detection of all critical leak points in the water tank 2. This provides a reliable guarantee for the quality of the water tank 2 upon delivery.

[0030] Specifically, the first inflation mechanism includes a first cylinder 3 and a first inflation component driven and connected to the first cylinder 3. The first inflation component is distributed opposite to the water outlet valve 201 on the water storage tank 2. The second inflation mechanism includes a second cylinder 4 and a second inflation component driven and connected to the second cylinder 4. The second inflation component is distributed opposite to the water inlet 202 on the water storage tank 2. The second inflation mechanism has two working states, namely: Press-fit sealing state: When the cover 203 is closed on the water inlet 202, the second cylinder 4 drives the second inflation component to abut against the cover 203, preventing the cover 203 from being pushed open by pressure during the inflation process by the first inflation mechanism.

[0031] Inflation test status: When the tank cover 203 is flipped open from the water inlet 202, the second cylinder 4 drives the second inflation component to be sealed and inserted into the water inlet 202, thereby inflating the water tank 2 to detect whether there is air leakage in the water outlet valve 201 and the ultrasonic welding seam.

[0032] The second inflation mechanism has two working states: pressure sealing and inflation testing. It can be adapted to the testing requirements of the water inlet 202 and the tank cover 203 of the water storage tank 2. No manual intervention is required for sealing and switching, which improves the automation and sealing performance of the test.

[0033] Furthermore, during the testing of the first inflation mechanism in this invention, the lid 203 is in a closed state; after the first inflation mechanism test is completed, the lid 203 needs to be opened before the second inflation mechanism test is performed. The lid 203 in this invention adopts a step-by-step opening method, that is: first, the lid opening mechanism pushes the lid 203 from the closed state to the first open state, and then the lid flipping mechanism pushes the lid 203 from the first open state to the second open state.

[0034] Specifically, the opening mechanism includes a third cylinder 5 and a first push rod 6 driven by the third cylinder 5. The first push rod 6 is distributed at an obtuse angle (e.g., 120°) with the plane where the lid 203 is in the closed state. The third cylinder 5 is used to drive the first push rod 6 to push the lid 203 from the closed state to the first open state. The flip-top mechanism is used to push the lid 203 from the first open state to the second open state.

[0035] This invention addresses the problem of the water tank 2's lid 203 being too tight and difficult to open. It employs a step-by-step opening method using a combination of an opening mechanism and a flip-top mechanism, offering significant improvements and reliability advantages. Because the water tank 2's lid 203 is tightly sealed when closed, directly opening it in one go requires considerable driving force and can easily damage the lid's hinge joint and the opening latch 2032, affecting product yield and making complete opening difficult. This invention first uses an opening mechanism to push the lid 203 from the closed state to the first open state (the lid 203 rotates at an angle of 70°~90°), which effectively overcomes the initial sealing resistance after the lid 203 is closed, thus achieving the initial opening of the lid 203 without applying excessive driving force and effectively avoiding damage to the lid 203 caused by brute force. Then, a flipping mechanism further pushes the lid 203 from the first open state to the second open state (the total rotation angle of the lid 203 is greater than 100°), ensuring that the opening angle of the lid 203 meets the detection requirements of the second inflation mechanism, completely avoiding interference between the lid 203 and the second inflation component when the lid is not fully open, and ensuring that the second inflation mechanism can be successfully inflated and tested from the water inlet 202. This step-by-step opening method not only solves the technical problem of the tight lid 203 and the difficulty in opening it, but also makes the opening process of the lid 203 smooth and controllable, reducing damage and loss to the lid 203. At the same time, it accurately adapts to the sequential testing process of the first inflation mechanism and the second inflation mechanism, ensuring smooth connection of the entire testing process, further improving the stability and continuity of equipment testing, and ensuring testing efficiency and product quality.

[0036] In addition, the pressing mechanism is also used to grab the tested and qualified water storage tank 2, lift it and hand it over to the unloading mechanism, which is used to move the tested and qualified water storage tank to the designated position for unloading.

[0037] This invention effectively solves the core problems in existing testing methods, such as process interference, insufficient testing accuracy, easy product damage, and high labor intensity, by organically integrating the carrier 1, pressing mechanism, dual inflation mechanism, opening mechanism, flipping mechanism, and unloading mechanism. It comprehensively improves the continuity, stability, and testing efficiency of the airtightness testing of the water storage tank 2, ensures the accuracy of multi-point airtightness testing of the water storage tank 2, effectively eliminates misjudgment and missed detection caused by manual operation, reduces the risk of unqualified products flowing out, adapts to the testing needs of large-scale production lines, simplifies the overall operation process of the equipment, and improves the practicality and reliability of the equipment, providing an efficient, accurate, and automated solution for the airtightness testing of the water storage tank 2.

[0038] See Figure 2 and Figure 7 The multi-point fully automatic airtightness testing equipment for water storage tanks of the present invention also includes a test platform 7, on which the carrier 1 is slidably mounted via a linear guide rail. A fourth cylinder 8 is installed on the test platform 7, and the output end of the fourth cylinder 8 is fixedly connected to the carrier 1. The fourth cylinder 8 is used to drive the carrier 1 to reciprocate between the loading station and the testing station, which can strictly control the transfer stroke and position of the carrier 1, ensuring that when the carrier 1 arrives at the testing station, the water storage tank 2 can be accurately aligned with the pressing mechanism, the first inflation mechanism, and the second inflation mechanism, avoiding problems such as sealing failure and testing errors caused by carrier offset. At the same time, it further improves the automation and continuity of testing, reduces the intensity of manual operation, and is suitable for the testing needs of large-scale production lines.

[0039] In this invention, the first inflation mechanism, the second inflation mechanism, the opening mechanism, and the flipping mechanism are all installed on the carrier 1, realizing the integrated integration of each core detection mechanism with the carrier 1. During the reciprocating transfer of the carrier 1, each detection mechanism can move synchronously with the carrier 1, ensuring that the relative position of the water storage tank 2 and each detection mechanism remains unchanged during the transfer process. This avoids docking deviations caused by the separation of mechanisms, improves the docking accuracy between the detection mechanism and the water storage tank 2, simplifies the overall structure of the equipment, reduces the difficulty of equipment installation and debugging, improves the integration and operational stability of the equipment, and facilitates the maintenance and repair of the equipment.

[0040] See Figure 4The carrier 1 is equipped with a positioning fixture 101 and a positioning mechanism for supporting the water storage tank 2. The positioning fixture 101 has a positioning groove that conforms to the shape of the water storage tank 2 for initial positioning of the water storage tank 2. The positioning mechanism includes a gripper cylinder 9 and two gripping blocks 10. The gripper cylinder 9 is fixed to the top of the carrier 1 and is located behind the positioning fixture 101. The two gripping blocks 10 are slidably mounted on the carrier 1 via linear guide rails and are located on the left and right sides of the positioning fixture 101, respectively. The two grippers on the gripper cylinder 9 are connected to the two gripping blocks 10 via connecting rods. The gripper cylinder 9 in the positioning mechanism can drive the gripping blocks 10 on both sides to move synchronously towards each other, clamping and positioning the water tank 2 on the positioning fixture 101, achieving accurate and stable positioning of the water tank 2, preventing the water tank 2 from shifting during the testing process, and ensuring that the first inflation component and the second inflation component can accurately connect with the water outlet valve 201 and water inlet 202 of the water tank 2, improving the sealing and accuracy of the test, and further ensuring the quality and efficiency of the test.

[0041] See Figure 1 and Figure 3 One end of the tank cover 203 is hinged to the water storage tank 2, and the other end (free end) of the tank cover 203 is provided with an opening latch 2032. The third cylinder 5 is mounted on the carrier 1 through a cylinder mounting bracket, and the third cylinder 5 is obliquely distributed so that the first push rod 6 installed on its output end is distributed at an obtuse angle to the plane where the tank cover 203 is in the closed state, and at the same time, the first push rod 6 and the opening latch 2032 are distributed opposite to each other. This invention provides an opening latch 2032 at the free end of the lid 203, with the first push rod 6 positioned opposite to the latch 2032. When the third cylinder 5 drives the first push rod 6, the first push rod 6 can precisely act on the latch 2032, enabling the lid 203 to open smoothly. This avoids damage to the lid 203 caused by the first push rod 6 contacting other parts of the lid 203. Furthermore, the latch 2032 increases the force-bearing area of ​​the first push rod 6, making the opening action easier and smoother, further improving the reliability and service life of the opening mechanism, and reducing workpiece wear.

[0042] See Figure 3 and Figure 4The flip-top mechanism includes a sixth cylinder 19 and a second push rod 20 driven by the sixth cylinder 19. The sixth cylinder 19 is mounted on the carrier 1 via another cylinder mounting bracket and is arranged along the moving direction of the carrier 1. The second push rod 20 is mounted on the output end of the sixth cylinder 19 and is positioned opposite to the cover 203 in the first open state. The sixth cylinder 19 can drive the second push rod 20 to precisely act on the cover 203 in the first open state, pushing it further to the second open state. This ensures that the cover 203 opens at a sufficient angle, effectively preventing interference between the cover 203 and the second inflation mechanism in the first open state. This ensures the smooth operation of the sealing connection of the second inflation component to the water inlet 202, ensuring the stability and continuity of the inflation test process and improving testing efficiency.

[0043] See Figure 3 and Figure 5 The first inflation assembly includes a first air passage block 15 connected to an external gas compression device and a gas pressure detection device. The first air passage block 15 is installed on the output end of the first cylinder 3, and the first air passage block 15 is provided with a first inflation plug 1501. A first sealing component 16 is fitted on the first inflation plug 1501.

[0044] Preferably, the first sealing component 16 adopts a pagoda-shaped sealing ring.

[0045] The first cylinder 3 can drive the first air block 15 to move toward the water tank 2, and make the first air plug 1501 precisely connect with the water outlet valve 201 of the water tank 2, pushing the water outlet valve 201 open. The pagoda-shaped sealing ring fitted on the first air plug 1501 can perfectly fit the round hole at the position of the water outlet valve 201 of the water tank 2, forming a reliable seal during the inflation process, effectively preventing gas leakage during inflation, and ensuring the accuracy of the airtightness test of the water outlet valve 201.

[0046] It should be noted that the gas connection and inflation detection control method of the first gas block 15 in this invention are conventional technologies. Specifically, the first gas block 15 is connected to an external gas compression device and a gas pressure detection device through a three-way connector, and is equipped with a solenoid valve to realize automatic control of the gas circuit opening and closing. During the detection process, the external gas compression device supplies gas to the first gas block 15. After inflation to the preset pressure value, the solenoid valve closes the gas circuit and enters the pressure holding stage. Subsequently, the pressure change in the gas circuit is monitored in real time by the gas pressure detection device. By judging whether the pressure value decreases, it can be determined whether there is a potential gas leakage at the corresponding detection part.

[0047] See Figure 4 and Figure 6The second inflation assembly includes a second air passage block 17 connected to an external gas compression device and a gas pressure detection device. The second air passage block 17 is installed on the output end of the second cylinder 4, and the second air passage block 17 is provided with a second inflation plug 1701. A second sealing component 18 is fitted on the second inflation plug 1701.

[0048] Preferably, the second sealing component 18 is a multi-lip sealing ring, which can achieve precise sealing connection with the water inlet 202 in the inflation test state.

[0049] It is understandable that the inflation and detection principle of the second air circuit block 17 is the same as that of the first air circuit block 15, so it will not be repeated here.

[0050] See Figure 7 The pressing mechanism includes a bracket 11, a fifth cylinder 12, a floating pressure head 13, and a first vacuum suction cup 14. The bracket 11 is fixed on the test bench 7. The fifth cylinder 12 is installed on the bracket 11 in a vertical direction. The floating pressure head 13 is installed on the bottom of the connecting plate 1201 at the output end of the fifth cylinder 12. The first vacuum suction cup 14 is installed on the floating pressure head 13. The fifth cylinder 12 can drive the floating pressure head 13 and the first vacuum suction cup 14 to move smoothly up and down, realizing the pressing and gripping of the water storage tank 2. The floating pressure head 13 can float up and down, which can adapt to the height deviation of the water storage tank 2, avoid the pressure damage caused by rigid pressing to the water storage tank 2, and at the same time ensure uniform pressing force and improve the sealing performance of pressing. The first vacuum suction cup 14 is installed on the floating pressure head 13, which can achieve adsorption of the water storage tank 2 while pressing it, providing a reliable guarantee for the lifting and handover of the water storage tank 2 after subsequent qualified inspection, realizing the integration of pressing and gripping functions, simplifying the equipment structure, and improving the integration and testing efficiency of the equipment.

[0051] The floating pressure head 13 is slidably connected to the connecting plate 1201 through four limiting guide posts. The four limiting guide posts can limit the movement stroke of the floating pressure head 13. At the same time, springs are fitted on the four limiting guide posts, and the springs elastically abut against the floating pressure head 13 and the connecting plate 1201.

[0052] See Figure 1 and Figure 7The unloading mechanism includes a linear drive module 21 arranged horizontally and a material-grabbing component mounted on the linear drive module 21. The material-grabbing component is inclinedly arranged behind the floating pressure head 13. The material-grabbing component includes a seventh cylinder 22, a mounting plate 23 fixed to the output end of the seventh cylinder 22, and a second vacuum suction cup 24 mounted on the mounting plate 23. After the pressure mechanism adsorbs and lifts the water storage tank 2 into position, the seventh cylinder 22 can drive the second vacuum suction cup 24 to move and suck up the water storage tank 2, thereby completing the handover. This inclined structure can make reasonable use of the equipment space and effectively avoid interference between the material-grabbing component and the pressure mechanism and other components during the material-grabbing process, so that the water storage tank 2 can be smoothly removed. At the same time, it realizes the automatic material-grabbing and transfer of the water storage tank 2, further improving the material-grabbing efficiency and automation level, and adapting to the needs of large-scale production line inspection.

[0053] Optionally, the linear drive module 21 can be a slide cylinder, a ball screw linear module, or a linear motor, etc. In this embodiment, a slide cylinder is specifically used.

[0054] In this embodiment, the third cylinder 5, the fourth cylinder 8 and the sixth cylinder 19 are all pen-shaped cylinders; the first cylinder 3, the second cylinder 4, the fifth cylinder 12 and the seventh cylinder 22 are all guide rod cylinders.

[0055] The working principle of the multi-point fully automatic airtightness testing device for water storage tanks of the present invention is as follows: First, at the preset loading station, the water tank 2 to be tested is precisely placed on the positioning fixture 101 of the carrier 1 by a person or a robot. The contour positioning groove on the positioning fixture 101 performs preliminary positioning of the water tank 2. Then, the gripper cylinder 9 in the positioning mechanism is activated, driving the gripping blocks 10 on both sides to move synchronously towards each other, firmly clamping the water tank 2 on the positioning fixture 101, completing the precise positioning and clamping of the water tank 2, and avoiding displacement during subsequent testing.

[0056] After clamping, the fourth cylinder 8 on the test bench 7 is activated, driving the carrier 1 to move smoothly from the upstream loading station to the downstream test station along the linear guide rail. Since the first inflation mechanism, the second inflation mechanism, the opening mechanism and the flipping mechanism are all integrated with the carrier 1, each testing mechanism moves synchronously with the carrier 1, ensuring that when the water tank 2 arrives at the test station, it can be accurately aligned with the pressing mechanism above the test station.

[0057] After the carrier 1 arrives at the test station and is positioned, the pressing mechanism is activated. The fifth cylinder 12 on the bracket 11 drives the connecting plate 1201 to move the floating pressure head 13 and the first vacuum suction cup 14 vertically downward until the floating pressure head 13 presses against the top of the water tank 2. The floating pressure head 13 achieves adaptive floating through the limiting guide post and spring, which can adapt to the height deviation of the water tank 2, avoid rigidly damaging the water tank 2, and at the same time ensure uniform pressing force, so as to achieve stable pressing of the water tank 2 and provide reliable sealing guarantee for subsequent airtightness testing.

[0058] After the pressing mechanism completes the clamping, the airtightness test process is initiated. First, the first inflation mechanism is tested: at this time, the lid 203 of the water tank 2 is closed. The first cylinder 3 of the first inflation mechanism is activated, driving the first air passage block 15 to move towards the outlet valve 201 of the water tank 2. This causes the first inflation plug 1501 to precisely align with the outlet valve 201 and push it open. The pagoda-shaped sealing ring on the first inflation plug 1501 fits tightly with the round hole at the outlet valve 201, forming a reliable seal. The first air passage block 15 begins inflation. Simultaneously, the second inflation mechanism switches to a pressure-sealing state to prevent the lid 203 from popping open due to air pressure during inflation by the first inflation mechanism. After being inflated to the preset pressure value, the solenoid valve closes the air circuit and enters the pressure holding stage. The air pressure detection equipment monitors the pressure change in the air circuit in real time. By judging whether the pressure value decreases, it can be determined whether there is a potential air leakage in the tank cover 203, the one-way air return hole 2031, and the ultrasonic welding seam of the water storage tank 2, thus completing the air tightness test of the first point.

[0059] After the first inflation mechanism completes its test, the first cylinder 3 drives the first inflation component to reset and disengage from the water outlet valve 201. The water outlet valve 201 then resets and seals itself due to its own rebound characteristics.

[0060] The opening process is then initiated. First, the third cylinder 5 of the opening mechanism is activated. Since the third cylinder 5 is arranged at an angle, the first push rod 6 it drives is distributed at an obtuse angle to the plane where the lid 203 is in the closed state, and is precisely aligned with the opening latch 2032 of the lid 203. The first push rod 6 pushes the opening latch 2032, smoothly pushing the lid 203 from the closed state to the first open state, overcoming the initial sealing resistance of the lid 203. Then, the sixth cylinder 19 of the flip-top mechanism is activated, driving the second push rod 20 to act on the lid 203 in the first open state, further pushing it to the second open state, ensuring that the opening angle of the lid 203 is sufficient and avoiding interference with the subsequent operation of the second inflation component.

[0061] After the lid 203 reaches the second open state, the second inflation mechanism switches to the inflation test state. The second cylinder 4 drives the second air circuit block 17 to move, so that the second inflation plug 1701, along with the second sealing component 18, is sealed and inserted into the water inlet 202 of the water storage tank 2, forming a reliable seal. Subsequently, the second air circuit block 17 is inflated to the preset pressure by an external gas compression device according to the same inflation, pressure holding, and testing principle as the first air circuit block 15. After pressure holding, the pressure change is monitored by the air pressure detection device to determine whether there is a potential air leakage at the water outlet valve 201 and the ultrasonic welding seam of the water storage tank 2, thus completing the air tightness test at the second point. At this point, the testing of all key air leakage points of the water storage tank 2 is completed.

[0062] After the test is completed, if the water tank 2 is a qualified product, the first vacuum suction cup 14 of the pressing mechanism will adsorb the water tank 2, the fifth cylinder 12 will be started, and the connecting plate 1201, the floating pressure head 13 and the adsorbed qualified water tank 2 will be lifted vertically together until the preset handover height is reached; then the seventh cylinder 22 of the material picking component will be started, and the mounting plate 23 will be driven to move the second vacuum suction cup 24 until the second vacuum suction cup 24 adsorbs the water tank 2, completing the handover of the water tank 2 from the pressing mechanism to the unloading mechanism.

[0063] After the handover is completed, the first vacuum suction cup 14 is released, the seventh cylinder 22 drives the second vacuum suction cup 24 to reset, and then the linear drive module 21 moves the material picking component and the adsorbed qualified water storage tank 2 to the designated unloading position. The second vacuum suction cup 24 is released, completing the automatic unloading of the qualified water storage tank 2. At the same time, the flip-top mechanism, the opening mechanism, the second inflation mechanism, and the positioning mechanism are reset in sequence. The fourth cylinder 8 drives the carrier 1 to return from the testing station to the loading station, ready to receive the next water storage tank 2 to be tested, and enter the next round of testing cycle. If a non-qualified water storage tank 2 is detected, the pressing mechanism is released, the carrier 1 returns to the loading station, and the non-qualified product is removed manually or by the matching sorting mechanism, ensuring that the entire testing process runs continuously and automatically, adapting to the testing needs of large-scale production lines.

[0064] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multi-point fully automatic airtightness testing device for water storage tanks, characterized in that, include: A carrier (1) that can reciprocate between the loading station and the testing station, the carrier (1) being used to load the water tank (2) to be tested. The pressing mechanism is mounted above the test station and is used to press the water tank (2) onto the carrier (1); The first inflation mechanism includes a first cylinder (3) and a first inflation component that is driven and connected to the first cylinder (3). The first inflation component is distributed relative to the water outlet valve (201) on the water storage tank (2). The second inflation mechanism includes a second cylinder (4) and a second inflation component driven and connected to the second cylinder (4). The second inflation component is distributed opposite to the water inlet (202) on the water tank (2). The water tank (2) is also provided with a flip-top lid (203). The second inflation mechanism has two working states: a press-fit sealing state, in which the lid (203) is closed on the water inlet (202), the second cylinder (4) drives the second inflation component to abut against the lid (203); and an inflation test state, in which the lid (203) is flipped open from the water inlet (202), the second cylinder (4) drives the second inflation component to be sealed and inserted into the water inlet (202). The opening mechanism includes a third cylinder (5) and a first push rod (6) driven and connected to the third cylinder (5). The first push rod (6) is distributed at an obtuse angle to the plane of the box cover (203) in the closed state. The third cylinder (5) is used to drive the first push rod (6) to push the box cover (203) from the closed state to the first open state. A flip-top mechanism is used to push the box lid (203) from a first open state to a second open state; The feeding mechanism, the pressing mechanism is also used to grab the qualified water tank (2) and lift it to the feeding mechanism, the feeding mechanism is used to move the qualified water tank to the designated position for feeding.

2. The multi-point fully automatic airtightness testing equipment for water storage tanks according to claim 1, characterized in that, It also includes a test bench (7), on which a fourth cylinder (8) is installed. The carrier (1) is slidably installed on the test bench (7) and driven by the fourth cylinder (8). The fourth cylinder (8) is used to drive the carrier (1) to reciprocate between the loading station and the testing station.

3. The multi-point fully automatic airtightness testing equipment for water storage tanks according to claim 1, characterized in that, The carrier (1) is provided with a positioning fixture (101) and a positioning mechanism. The positioning fixture (101) is used to support the water storage tank (2). The positioning mechanism includes a gripper cylinder (9) and two gripping blocks (10). The two gripping blocks (10) are slidably mounted on the carrier (1) and are respectively located on opposite sides of the positioning fixture (101). The two grippers on the gripper cylinder (9) are respectively driven to the two gripping blocks (10).

4. The multi-point fully automatic airtightness testing equipment for water storage tanks according to claim 1, characterized in that, The pressing mechanism includes a bracket (11), a fifth cylinder (12), a floating pressure head (13), and a first vacuum suction cup (14). The fifth cylinder (12) is mounted vertically on the bracket (11). The floating pressure head (13) is mounted vertically on the bottom of the connecting plate (1201) at the output end of the fifth cylinder (12). The first vacuum suction cup (14) is mounted on the floating pressure head (13).

5. The multi-point fully automatic airtightness testing equipment for water storage tanks according to claim 1, characterized in that, The first inflation assembly includes a first air block (15) connected to an external gas compression device and a gas pressure detection device. The first air block (15) is installed on the output end of the first cylinder (3), and the first air block (15) is provided with a first inflation plug (1501). A first sealing component (16) is fitted on the first inflation plug (1501).

6. The multi-point fully automatic airtightness testing equipment for water storage tanks according to claim 1, characterized in that, The second inflation assembly includes a second air block (17) connected to an external gas compression device and a gas pressure detection device. The second air block (17) is installed on the output end of the second cylinder (4), and the second air block (17) is provided with a second inflation plug (1701). A second sealing component (18) is fitted on the second inflation plug (1701).

7. The multi-point fully automatic airtightness testing equipment for water storage tanks according to claim 1, characterized in that, One end of the lid (203) is hinged to the water tank (2), and the other end of the lid (203) is provided with an opening buckle (2032). The first push rod (6) and the opening buckle (2032) are distributed opposite to each other.

8. The multi-point fully automatic airtightness testing equipment for water storage tanks according to claim 1, characterized in that, The flip-top mechanism includes a sixth cylinder (19) and a second push rod (20) driven and connected to the sixth cylinder (19). The second push rod (20) is distributed relative to the lid (203) in the first open state.

9. The multi-point fully automatic airtightness testing equipment for water storage tanks according to claim 4, characterized in that, The feeding mechanism includes a linear drive module (21) and a material picking component mounted on the linear drive module (21). The material picking component is inclinedly arranged on the rear side of the floating pressure head (13). The material picking component includes a seventh cylinder (22), a mounting plate (23) fixed to the output end of the seventh cylinder (22), and a second vacuum suction cup (24) mounted on the mounting plate (23).

10. The multi-point fully automatic airtightness testing equipment for water storage tanks according to claim 1, characterized in that, The first inflation mechanism, the second inflation mechanism, the opening mechanism and the flipping mechanism are all installed on the carrier (1).

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