Airtightness detection device

Abstract

The invention relates to the technical field of automobile battery shell airtightness detection. The airtightness detection device comprises a fixing frame, a first bearing seat is arranged on the fixing frame, a profiling workpiece is arranged on the first bearing seat, a pressing seat is arranged on the fixing frame in a sliding mode, a plurality of pressing air cylinders are arranged at the top of the fixing frame, and a first lifting assembly is arranged on the fixing frame. A buffering assembly is arranged at the bottom of the fixing frame, a conveying frame is arranged on one side of the fixing frame, a conveying assembly is arranged on the conveying frame in a sliding mode, a second bearing seat is arranged at the end, away from the fixing frame, of the conveying frame in a sliding mode, and a second lifting assembly is arranged on the conveying frame. The battery pack shell detection device has the advantages that after the first bearing seat detects the battery pack shell, the first bearing seat descends to the bottom of the conveying frame, then the conveying assembly moves the battery pack shell towards the second bearing seat, and after the first bearing seat returns to the original position, the next battery pack shell is detected, so that the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of airtightness detection of automobile battery casings, and particularly to an airtightness detection device. Background Art

[0002] The casing of an automobile battery pack is an important component for encapsulating automobile batteries and related electronic accessories. In industrial production, there are high airtightness requirements for the casing of an automobile battery pack. On the one hand, it is to prevent dust pollution, and on the other hand, it is to prevent the intrusion of water vapor, etc., from interfering with and corroding electronic accessories and avoiding battery short circuits, which may affect the safety of the automobile. Therefore, the airtightness of the produced automobile battery casings needs to be detected.

[0003] The airtightness detection process of an automobile battery casing usually is as follows: Place the workpiece to be tested on the nylon profiling block of the airtightness detection tooling, and then move the whole workpiece to be tested and the profiling block to the detection position. When conducting the test, first fix and press the workpiece on the tooling, then open the air source to fill a certain pressure value of gas into the cavity formed between the nylon profiling block and the workpiece to be tested. After that, close the air source, keep the pressure stable for a period of time, and then the airtightness detection system starts to test the air pressure change in the cavity to obtain the pressure difference, and calculate the leakage value through calculation. Determine the sealing performance of the workpiece to be tested according to the leakage value.

[0004] After the detection of the workpiece to be tested is completed, it is necessary to move the whole workpiece to be tested and the profiling block to the loading and unloading position. Then, the staff disassembles the completed tested workpiece from the profiling block, and then place a new workpiece to be tested on the profiling workpiece, and so on to test whether the workpiece is qualified. During the detection process, the assembly of the workpiece to be tested on the profiling workpiece, and the back-and-forth movement of the whole workpiece to be tested and the profiling workpiece between the detection position and the loading and unloading position all require a lot of time. During this period, the detection device is in an idle state, and the detection efficiency is not high. Summary of the Invention

[0005] In order to overcome the disadvantages that during the detection process of the prior art, the assembly of the workpiece to be tested on the profiling workpiece, and the back-and-forth movement of the whole workpiece to be tested and the profiling workpiece between the detection position and the loading and unloading position all require a lot of time, and during this period, the detection device is in an idle state and the detection efficiency is not high, the present application provides an airtightness detection device.

[0006] An airtightness detection device provided by the present application adopts the following technical solution: An airtight detection device, comprising a fixed frame, on which a first carrier seat is slidably arranged, an imitation workpiece is arranged on the first carrier seat, a pressing seat is slidably arranged on the fixed frame and located at the top of the imitation workpiece, a plurality of pressing cylinders are evenly arranged on the top of the fixed frame, the piston rods of the plurality of pressing cylinders are connected to the pressing seat, positioning blocks are slidably arranged on both sides of the fixed frame, the positioning blocks are used for positioning the first carrier seat, an adjusting component for adjusting the positions of the two positioning blocks is arranged at one end of the fixed frame, a first lifting component for adjusting the position of the first carrier seat is arranged on the fixed frame, a buffer component for buffering the first carrier seat is arranged at the bottom of the fixed frame, a conveying frame is arranged on one side of the fixed frame, a conveying component for conveying the imitation workpiece is slidably arranged on the conveying frame, a second carrier seat is slidably arranged at the end of the conveying frame away from the fixed frame, a second lifting component for adjusting the position of the second carrier seat is arranged on the conveying frame, and a control chassis is fixedly arranged on one side of the fixed frame.

[0007] By adopting the above technical solution, after the battery pack housing located on the first carrier seat is detected, the first carrier seat quickly descends along the vertical direction under the action of the first lifting component to be flush with the bottom slide rail of the conveying frame, and then under the action of the conveying component, the imitation workpiece and the battery pack housing located on the first carrier seat are synchronously moved to the second carrier seat. Then, under the action of the second lifting component, the detected battery pack housing is lifted to be flush with the slide rail at the top of the conveying frame, so as to facilitate the staff to remove the detected battery pack housing, and then place the battery pack housing to be detected on the imitation workpiece for detection; during the process of the conveying component synchronously moving the imitation workpiece and the battery pack housing located on the first carrier seat to the second carrier seat, the first carrier seat quickly rises to the original detection position under the action of the first lifting component, and the conveying component located at the top of the conveying frame moves the battery pack housing to be detected on the second carrier seat to the first carrier seat for detection, thereby improving the detection efficiency.

[0008] Optionally, the adjustment assembly includes a mounting seat, a first sliding rod, a second sliding rod, a first gear, a second gear and an adjustment motor, the mounting seat is arranged at one end of the fixed frame away from the conveying frame, the first sliding rod and the second sliding rod are both slidably arranged on the mounting seat, the first sliding rod and the second sliding rod are respectively connected to the two positioning blocks at one-to-one, the first sliding rod is provided with a first rack, the second sliding rod is provided with a second rack, the first gear and the second gear are both rotatably arranged on the mounting seat, the first gear is meshed with the first rack, and the second gear is meshed with the second rack, the first connecting gear and the second connecting gear are rotatably arranged on the mounting seat, the first connecting gear is meshed with the second connecting gear, the end of the first connecting gear away from the second connecting gear is meshed with the first gear, and the end of the second connecting gear away from the first connecting gear is meshed with the second gear, the adjustment motor is arranged on the mounting seat, and the output shaft of the adjustment motor is coaxially connected with the first gear.

[0009] By adopting the above technical solution, when it is necessary to inspect the battery pack shell located on the first supporting seat, the two positioning blocks are moved towards each other by adjusting the components, so that the positioning blocks are located at the bottom of the first supporting seat. When multiple pressing cylinders press the battery pack shell, the stability of the first supporting seat during operation can be improved.

[0010] Optionally, the first lifting assembly includes a lifting plate, the lifting plate is fixedly arranged on the mounting seat along the vertical direction, a sliding seat is slidably arranged on the lifting plate, the top of the sliding seat is connected to the first bearing seat, a fixed block is arranged at the bottom of one side of the sliding seat, an abutment block is rotatably arranged on the lifting plate, a return torsion spring is arranged on the abutment block, the abutment block abuts against the fixed block, a limiting block is arranged on the side of the sliding seat away from the fixed block, a limiting rod for limiting the limiting block is arranged on the lifting plate, a lifting block is arranged on the top of the sliding seat, a lifting drive disk is rotatably arranged on the mounting seat, a lifting rod is arranged on the lifting drive disk, the other end of the lifting rod is slidably connected to the lifting block, a descending drive disk is coaxially arranged on the lifting drive disk, a descending rod is arranged on the descending drive disk, a toggle rod is arranged on the abutment block, the other end of the descending rod is slidably connected to the toggle rod, and a lifting motor is arranged on the mounting seat, and the output shaft of the lifting motor is coaxially connected to the lifting drive disk.

[0011] By adopting the above technical solution, the first lifting assembly can make the first bearing seat rise and fall quickly, thereby improving production efficiency.

[0012] Optionally, an auxiliary rod is slidably inserted through the lifting plate. A reset spring is arranged at the top of one end of the auxiliary rod. The other end of the reset spring is connected to the lifting plate. The end of the auxiliary rod away from the reset spring is slidably connected to the abutting block. One end of the auxiliary rod close to the reset spring is slidably connected to the first sliding rod.

[0013] By adopting the above technical solution, when multiple pressing cylinders press the battery pack housing, the first bearing seat has a tendency to move towards the bottom of the fixing frame. Therefore, the auxiliary rod can play an auxiliary fixing role on the abutting block, thereby improving the stability of the first bearing seat during the working process.

[0014] Optionally, the buffer assembly includes a buffer plate. A plurality of buffer rods are evenly arranged at the bottom of the buffer plate. A plurality of fixing cylinders are evenly arranged at the bottom of the fixing frame. The plurality of buffer rods correspond to the plurality of fixing cylinders one by one. The buffer rods are slidably arranged in the fixing cylinders. A buffer spring is arranged at the bottom of the buffer rod. The buffer spring is connected to the fixing cylinder.

[0015] By adopting the above technical solution, after the battery pack housing is detected, when the first bearing seat descends to be flush with the slide rail at the bottom of the conveying frame, the buffer assembly can buffer the impact force generated during the rapid descent of the first bearing seat, so that the first bearing seat can descend more smoothly.

[0016] Optionally, the conveying assembly includes a moving seat. Rollers are rotatably arranged on both sides of the moving seat. A plurality of slide rails are arranged at the top and bottom of the conveying frame. Chutes are formed on the two slide rails located in the middle position of the conveying frame. The rollers on both sides of the moving seat are respectively slidably arranged in the chutes. A driving motor for driving the rollers to rotate is arranged inside the moving seat. A pushing assembly for pushing the profiling workpiece to move is arranged on the moving seat.

[0017] By adopting the above technical solution, when the driving motor is started, the driving motor will drive the rollers to rotate, thereby driving the moving seat to move along the length direction of the slide rail. When the moving seat is located below the first bearing seat, the first bearing seat is driven to move together by the pushing assembly.

[0018] Optionally, the second lifting assembly includes a lifting rail. The lifting rail is arranged vertically at one end of the conveying frame away from the fixing frame. A lifting screw rod is rotatably arranged in the lifting rail. The lifting screw rod is threadedly connected to the second bearing seat. A driven bevel gear is coaxially arranged at the bottom of the lifting screw rod. A second lifting motor is arranged at the bottom of the conveying frame. A driving bevel gear is coaxially arranged on the output shaft of the second lifting motor. The driving bevel gear meshes with the driven bevel gear.

[0019] By adopting the above technical solution, during use, the second lifting motor is started. During the rotation of the second lifting motor, the driving conical wheel will be driven to rotate. During the rotation of the driving conical wheel, the driven conical wheel will be driven to rotate. During the rotation of the driven conical wheel, the lifting screw rod will be driven to rotate. During the rotation of the lifting screw rod, the second bearing seat will be driven to move along the lifting rail.

[0020] Optionally, the first bearing seat and the second bearing seat have the same shape and size, and fixing components for fixing the profiling workpiece are provided on both the first bearing seat and the second bearing seat. The fixing component includes a fixing plate. The inside of the second bearing seat is hollow. The fixing plate is slidably arranged inside the second bearing seat. An installation block is arranged on the fixing plate. An installation groove is formed on the second bearing seat. The installation block is slidably arranged in the installation groove. A fixing rod is rotatably arranged on the installation block. A limiting rod is arranged at the top of the fixing rod. The fixing rod passes through the profiling workpiece. A worm gear is coaxially arranged at the bottom of the fixing rod. A rotating motor is arranged inside the second bearing seat. A worm is coaxially arranged on the output shaft of the rotating motor. The worm meshes with the worm gear. A first electric push rod is arranged at the bottom of the second bearing seat. The push rod of the first electric push rod is connected to the fixing plate.

[0021] By adopting the above technical solution, the fixing component can make the profiling workpiece be placed on the second bearing seat more stably, thereby improving the stability of the profiling workpiece and the battery pack housing during the working process.

[0022] Optionally, the pushing component includes two stop rods. Both of the two stop rods are rotatably arranged at one end of the moving seat through a rotating shaft. The inside of the moving seat is hollow. A third gear is coaxially arranged on the rotating shaft. A third rack is slidably arranged inside the moving seat. The third gear meshes with the third rack. A second electric push rod is arranged inside the moving seat. The push rod of the second electric push rod is connected to the third rack.

[0023] By adopting the above technical solution, when the moving seat moves along the slide rail to the lower side of the profiling workpiece, and then the stop rods are driven to rotate to the vertical direction by the second electric push rod, so that during the movement of the moving seat, the stop rods will drive the profiling workpiece and the battery pack housing to move synchronously.

[0024] Optionally, a detection block is arranged on one side of the profiling workpiece. A connection jack is formed on the detection block. A communication seat is arranged on the positioning block. The communication seat is slidably arranged on the positioning block. A positioning spring is arranged on the communication seat. The other end of the positioning spring is connected to the positioning block. A connection plug is arranged on the communication seat. The connection plug is inserted into the connection jack.

[0025] By adopting the above technical solution, it is convenient to transport the high-pressure air for testing to the space between the profiling workpiece and the battery pack housing through the detection block for pressure holding test.

[0026] The present invention has the following advantages: 1. By setting the first lifting component, the conveying component and the second lifting component, after the first carrier seat finishes detecting the battery pack housing, it descends to the bottom of the conveying rack, and then the conveying component moves the detected battery pack housing towards the second carrier seat, and then the first carrier seat returns to its original position to detect the next battery pack housing, thereby improving the detection efficiency; 2. By setting the adjustment component, the positioning block is located at the bottom of the first carrier seat, which can improve the stability of the first carrier seat during operation when multiple pressing cylinders press the battery pack housing; 3. By setting the buffer component, the buffer component can counteract the impact force generated during the rapid descent of the first carrier seat, so that the first carrier seat can descend more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is a schematic installation structure diagram of the first carrier seat of the present invention; Figure 3 is a schematic installation structure diagram of the adjustment component of the present invention; Figure 4 is Figure 3 an enlarged structural diagram of part A in Figure 5 is a schematic installation structure diagram of the buffer component; Figure 6 is a schematic installation structure diagram of the first lifting component; Figure 7 is a schematic installation structure diagram of the conveying rack; Figure 8 is a schematic installation structure diagram of the conveying component; Figure 9 is a schematic structural diagram of the second carrier seat; Figure 10 is a schematic installation structure diagram of the fixing component; In the figure: 1. Fixed frame; 11. First bearing seat; 12. Profiled workpiece; 121. Detection block; 122. Connection jack; 13. Pressing seat; 14. Pressing cylinder; 15. Positioning block; 151. Connecting seat; 152. Positioning spring; 153. Connection plug; 16. Conveyor frame; 17. Second bearing seat; 18. Control chassis; 2. Adjustment component; 21. Mounting seat; 22. First sliding rod; 221. First rack; 222. First connecting gear; 23. Second sliding rod; 231. Second rack; 232. Second connecting gear; 24. First gear; 25. Second gear; 26. Adjustment motor; 3. First lifting component; 31. Lifting plate; 32. Sliding seat; 321. Fixed block; 322. Limiting block; 323. Lifting block; 33. Contact block; 332. Poking rod; 34. Limiting rod; 35. Lifting drive disc; 351. Lifting rod; 36. Lowering drive disc; 361. Lowering rod; 37. Lifting motor; 38. Auxiliary rod; 381. Return spring; 4. Buffer component; 41. Buffer plate; 42. Buffer rod; 43. Fixed cylinder; 44. Buffer spring; 5. Conveyor component; 51. Moving seat; 52. Roller; 53. Slide rail; 54. Chute; 55. Drive motor; 6. Second lifting component; 61. Lifting rail; 62. Lifting lead screw; 63. Driven conical wheel; 64. Second lifting motor; 65. Driving conical wheel; 7. Fixing component; 71. Fixing plate; 711. Mounting block; 72. Mounting groove; 73. Fixing rod; 731. Limiting rod; 74. Base; 75. Worm gear; 76. Rotating motor; 77. Worm; 78. First electric push rod; 8. Pushing component; 81. Stop rod; 82. Rotating shaft; 83. Third gear; 84. Third rack; 85. Second electric push rod; 9. Battery pack housing. Detailed implementation mode

[0028] The following further describes the present invention with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0029] As Figures 1 to 10As shown in the figure, an airtight detection device includes a fixed frame 1. A first carrier 11 is slidably mounted on the fixed frame 1. A profiling workpiece 12 is mounted on the first carrier 11. A pressing seat 13 is slidably mounted on the fixed frame 1 and located at the top of the profiling workpiece 12. A plurality of pressing cylinders 14 are evenly mounted on the top of the fixed frame 1. The piston rods of the plurality of pressing cylinders 14 are all connected to the pressing seat 13. Positioning blocks 15 are slidably mounted on both sides of the fixed frame 1. The positioning blocks 15 are used to position the first carrier 11. An adjustment assembly 2 for adjusting the positions of the two positioning blocks 15 is mounted at one end of the fixed frame 1. A first lifting assembly 3 for adjusting the position of the first carrier 11 is mounted on the fixed frame 1. A buffer assembly 4 for buffering the first carrier 11 is mounted at the bottom of the fixed frame 1. A conveying frame 16 is mounted on one side of the fixed frame 1. A conveying assembly 5 for conveying the profiling workpiece 12 is slidably mounted on the conveying frame 16. A second carrier 17 is slidably mounted at the end of the conveying frame 16 away from the fixed frame 1. A profiling workpiece 12 is also mounted on the second carrier 17. A second lifting assembly 6 for adjusting the position of the second carrier 17 is mounted on the conveying frame 16. A control chassis 18 is fixedly mounted on one side of the fixed frame 1. During use, the battery pack housing is placed on the profiling workpiece 12 on the second carrier 17, and then the profiling workpiece 12 and the battery pack housing located on the second carrier 17 are moved towards the first carrier 11 through the conveying assembly 5. When it moves to the specified position, the conveying assembly 5 withdraws from the first carrier 11. Then, the adjustment assembly 2 is used to adjust the two positioning blocks 15 to move towards each other, so that both positioning blocks 15 are located at the bottom of the first carrier 11, thereby improving the stability of the first carrier 11 during the working process. Then, a plurality of pressing cylinders 14 are simultaneously started. After the plurality of pressing cylinders 14 are simultaneously started, they will push the pressing seat 13 to move. A plurality of flexible contact blocks are evenly mounted on the pressing seat 13. The flexible contact blocks press the battery pack housing 9, so that the battery pack housing 9 contacts the profiling workpiece. The profiling workpiece 12 will fill into the inside of the battery pack housing 9. A detector is mounted on the fixed frame 1. During the airtightness detection process, the detector injects gas into the cavity between the battery pack housing 9 and the profiling workpiece 12. After stabilizing for a period of time, the air pressure difference before and after inflation is detected, so as to detect the airtightness of the battery pack housing 9. The staff controls the entire airtight detection device through the control chassis 18. Since the detector and the control chassis 18 are both prior arts, they will not be described in detail one by one in this embodiment;After the battery pack housing 9 located on the first carrier 11 is detected, the positions of the two positioning blocks 15 are adjusted again through the adjustment assembly 2 to move the two positioning blocks 15 in a direction away from each other. Then, the first carrier 11 is made to slide down towards the bottom of the fixing frame 1 through the first lifting assembly 3. The buffer assembly 4 buffers the impact during the descent of the first carrier 11 to make it more stable. Then, the profiling workpiece 12 and the battery pack housing 9 on the first carrier 11 are moved as a whole towards a position closer to the second carrier 17 through the conveying assembly 5 on the conveying frame 16. At the same time, the first lifting assembly 3 is used again to restore the first carrier 11 to its original position for another airtightness detection. The second lifting assembly 6 lifts the profiling workpiece 12 and the battery pack housing 9 located on the second carrier 17 to the top of the conveying frame 16 for easy handling by the staff. This process is repeated, thereby improving the detection efficiency.

[0030] Such as Figures 1 to 10As shown in the figure, the adjustment component 2 includes a mounting base 21, a first sliding rod 22, a second sliding rod 23, a first gear 24, a second gear 25 and an adjustment motor 26. The mounting base 21 is installed at one end of the fixed frame 1 away from the conveying frame 16. Both the first sliding rod 22 and the second sliding rod 23 are slidably installed on the mounting base 21. The first sliding rod 22 and the second sliding rod 23 correspond to the two positioning blocks 15 one by one. The ends of the first sliding rod 22 and the second sliding rod 23 away from the mounting base 21 are respectively connected to the two positioning blocks 15. A first rack 221 is fixedly installed on the first sliding rod 22, and a second rack 231 is fixedly installed on the second sliding rod 23. Both the first gear 24 and the second gear 25 are rotatably installed on the mounting base 21. The first gear 24 meshes with the first rack 221, and the second gear 25 meshes with the second rack 231. A first connecting gear 222 and a second connecting gear 232 are also rotatably installed on the mounting base 21. The first connecting gear 222 meshes with the second connecting gear 232. The end of the first connecting gear 222 away from the second connecting gear 232 meshes with the first gear 24, and the end of the second connecting gear 232 away from the first connecting gear 222 meshes with the second gear 25. The adjustment motor 26 is fixedly installed on the mounting base 21, and the output shaft of the adjustment motor 26 is coaxially connected to the first gear 24. During use, when the adjustment motor 26 is started, the adjustment motor 26 will drive the first gear 24 to rotate during the rotation process. During the rotation process of the first gear 24, the first sliding rod 22 will be driven to move. At the same time, during the rotation process of the first gear 24, the first connecting gear 222 will be driven to rotate. During the rotation process of the first connecting gear 222, the second connecting gear 232 will be driven to rotate. During the rotation process of the second connecting gear 232, the second gear 25 will be driven to rotate. During the rotation process of the second gear 25, the second sliding rod 23 will be driven to move. During the movement process of the first sliding rod 22 and the second sliding rod 23, the corresponding positioning blocks 15 will be synchronously driven to move. The rotation direction of the second gear 25 is opposite to that of the first gear 24, so that the two positioning blocks 15 move towards each other or away from each other.

[0031] As Figures 1 to 10As shown, the first lifting assembly 3 includes a lifting plate 31, which is fixedly mounted on the mounting seat 21 along the vertical direction, a sliding seat 32 is slidably mounted on the lifting plate 31, the top of the sliding seat 32 is connected to the first bearing seat 11, a fixed block 321 is mounted on the bottom of one side of the sliding seat 32, an abutment block 33 is rotatably mounted on the lifting plate 31, a return torsion spring is mounted on the abutment block 33, the abutment block 33 abuts against the fixed block 321, a limiting block 322 is mounted on the side of the sliding seat 32 away from the fixed block 321, and a fixed abutment block 321 is mounted on the lifting plate 31. A limiting rod 731 is installed to limit the limiting block 322. A lifting block 323 is installed on the top of the sliding seat 32. A lifting drive disk 35 is rotatably installed on the mounting seat 21. A lifting rod 351 is installed on the lifting drive disk 35. The other end of the lifting rod 351 is slidably connected to the lifting block 323. A descending drive disk 36 is coaxially installed on the lifting drive disk 35. A descending rod 361 is installed on the descending drive disk 36. A toggle rod 332 is installed on the abutment block 33. The other end of the descending rod 361 is slidably connected to the toggle rod 332. A lifting motor 37 is installed on the mounting seat 21, and the output shaft of the lifting motor 37 is coaxially connected to the lifting drive disk 35. When in use, the lifting motor 37 is started, and the lifting motor 37 will drive the lowering drive disk 36 to rotate during the rotation, and the lowering drive disk 36 will synchronously drive the lowering rod 361 to move during the rotation. When the lowering rod 361 contacts the toggle rod 332, it will push the toggle rod 332 and the abutment block 33 to rotate, so that the abutment block 33 moves in the direction away from the fixed block 321, and the sliding seat 32 as a whole will move along the lifting plate 31 slides down in the length direction, and when the limit block 322 contacts the limit rod 731, the limit rod 731 will prevent the sliding seat 32 from continuing to descend; when the lifting motor 37 continues to rotate, the lifting drive disk 35 and the lifting rod 351 move to the side close to the lifting plate 31, and the lifting rod 351 will push the lifting block 323 to rise, thereby driving the sliding seat 32 to rise synchronously. When it is lifted to the highest position, under the action of the reset torsion spring, the abutment block 33 will be located at the bottom of the fixed block 321, thereby fixing the position of the sliding seat 32.

[0032] like Figures 1 to 10As shown, an auxiliary rod 38 is slidably inserted through the lifting plate 31. At the top of one end of the auxiliary rod 38, a return spring 381 is installed. The other end of the return spring 381 is connected to the lifting plate 31. The end of the auxiliary rod 38 away from the return spring 381 is slidably connected to the abutting block 33. One end of the auxiliary rod 38 close to the return spring 381 is slidably connected to the first sliding rod 22. When the two positioning blocks 15 move towards each other to improve the working stability of the first bearing seat 11, the adjustment motor 26 drives the first sliding rod 22 to move. During the movement of the first sliding rod 22, it will push the auxiliary rod 38 to move. The auxiliary rod 38 can improve the stability of the abutting rod during operation, thereby enhancing the stability of the sliding seat 32 during operation, and the return spring 381 is compressed. When the first bearing seat 11 needs to descend, first, the adjustment assembly 2 is used to drive the two positioning blocks 15 to move away from each other. Therefore, the first sliding rod 22 will move in the opposite direction. Under the action of the return spring 381, the auxiliary rod 38 will move towards its original position, so that the auxiliary rod 38 is away from the abutting rod, facilitating the operation of the first lifting assembly 3.

[0033] As Figures 1 to 10 shown, the buffer assembly 4 includes a buffer plate 41. A plurality of buffer rods 42 are evenly installed at the bottom of the buffer plate 41. A plurality of fixed cylinders 43 are evenly installed at the bottom of the fixed frame 1. The plurality of buffer rods 42 correspond to the plurality of fixed cylinders 43 one by one. The buffer rods 42 are slidably installed in the fixed cylinders 43. A buffer spring 44 is installed at the bottom of the buffer rod 42. The buffer spring 44 is connected to the fixed cylinder 43. When the first bearing seat 11 descends along the length direction of the fixed frame 1, the first bearing seat 11 will contact the buffer plate 41. Under the action of the buffer spring 44, the impact force generated when the first bearing seat 11 falls will be reduced, making the first bearing seat 11 descend more smoothly.

[0034] As Figures 1 to 10As shown, the conveying assembly 5 includes a moving seat 51. Rollers 52 are rotatably installed on both sides of the moving seat 51. Multiple slide rails 53 are fixedly installed at the top and bottom of the conveying frame 16. And the moving seat 51 is installed on the slide rails 53 at the top of the conveying frame 16 and the slide rails 53 at the top of the conveying frame 16. On the two slide rails 53 located at the middle position of the conveying frame 16, chutes 54 are opened along their own length directions. The rollers 52 on both sides of the moving seat 51 are respectively slidably installed in the chutes 54. A driving motor 55 for driving the rollers 52 to rotate is installed inside the moving seat 51. A pushing assembly 8 for pushing the profiling workpiece 12 to move is installed on the moving seat 51; when it is necessary to move the profiling workpiece 12 and the battery pack housing 9, start the driving motor 55. The driving motor 55 will drive the rollers 52 to rotate, thereby driving the moving seat 51 to move along the length direction of the chute 54. When the moving seat 51 is located at the bottom of the first bearing seat 11, then make the driving motor 55 rotate in the reverse direction. Under the action of the pushing assembly 8, the moving seat 51 drives the first bearing seat 11 and the battery housing to move synchronously during the moving process.

[0035] As Figures 1 to 10 shown, the second lifting assembly 6 includes a lifting rail 61. The lifting rail 61 is arranged vertically at one end of the conveying frame 16 far from the fixed frame 1. A lifting screw rod 62 is rotatably installed in the lifting rail 61. The lifting screw rod 62 is threadedly connected to the second bearing seat 17. A driven bevel gear 63 is coaxially installed at the bottom of the lifting screw rod 62. A second lifting motor 64 is fixedly installed at the bottom of the conveying frame 16. A driving bevel gear 65 is coaxially installed on the output shaft of the second lifting motor 64. The driving bevel gear 65 meshes with the driven bevel gear 63; in this embodiment, the second lifting assembly 6 is four lifting rails 61. The four lifting rails 61 are all installed vertically at one end of the conveying frame 16 far from the fixed frame 1. And the four lifting rails 61 are respectively located on both sides of the second bearing seat 17. A lifting screw rod 62 is rotatably installed in two of the lifting rails 61. The second lifting motor 64 is a double-shaft motor; when in use, start the second lifting motor 64. During the rotation of the second lifting motor 64, it will drive the driving bevel gear 65 to rotate. During the rotation of the driving bevel gear 65, it will drive the driven bevel gear 63 to rotate. During the rotation of the driven bevel gear 63, it will drive the lifting screw rod 62 to rotate. During the rotation of the lifting screw rod 62, it will drive the second bearing seat 17 to move.

[0036] As Figures 1 to 10As shown, the first carrier base 11 and the second carrier base 17 are identical in shape and size, and fixing components 7 for fixing the profiling workpiece 12 are installed on both the first carrier base 11 and the second carrier base 17. The fixing component 7 includes a fixing plate 71. The interior of the second carrier base 17 is hollow. The fixing plate 71 is slidably installed inside the second carrier base 17. An installation block 711 is installed on the fixing plate 71. An installation groove 72 is formed in the second carrier base 17. The installation block 711 is slidably installed in the installation groove 72. A fixing rod 73 is rotatably installed on the installation block 711. A limiting rod 731 is fixedly installed at the top of the fixing rod 73. The fixing rod 73 passes through the profiling workpiece 12. A worm gear 75 is coaxially installed at the bottom of the fixing rod 73. A rotating motor 76 is installed inside the second carrier base 17. A worm 77 is coaxially installed on the output shaft of the rotating motor 76. The worm 77 meshes with the worm gear 75. A first electric push rod 78 is installed at the bottom of the second carrier base 17. The push rod of the first electric push rod 78 is connected to the fixing plate 71. To improve the connection stability between the profiling workpiece 12 and the second carrier base 17, when the profiling workpiece 12 is placed on the second carrier base 17, the first electric push rod 78 is started. The first electric push rod 78 will push the fixing plate 71 to move in the vertical direction. During the movement of the fixing plate 71, the fixing rod 73 will be driven to move synchronously, so that the fixing rod 73 passes out of the installation groove 72. Then the rotating motor 76 is started. During the rotation of the rotating motor 76, the worm 77 will be driven to rotate. During the rotation of the worm 77, the worm gear 75 will be driven to rotate synchronously. During the rotation of the worm gear 75, the fixing rod 73 will be driven to rotate. During the rotation of the fixing rod 73, the limiting rod 731 will be driven to rotate synchronously. The limiting rod 731 will rotate to a position perpendicular to the length direction of the installation groove 72, so that the profiling workpiece 12 can be placed on the second carrier base 17 more stably. When the conveying component 5 needs to move the profiling workpiece 12 and the battery pack housing 9, the rotating motor 76 is rotated in the reverse direction, so that the fixing rod 73 rotates. While the fixing rod 73 rotates, the limiting rod 731 rotates to a position parallel to the length of the installation groove 72. Then the first electric push rod 78 is started to move the fixing plate 71 to the original position, so that the limiting rod 731 slides into the fixing groove, which is convenient for the conveying component 5 to move the profiling workpiece 12 and the battery pack housing 9.

[0037] As Figures 1 to 10As shown, the pushing component 8 includes two retaining rods 81. Both of the two retaining rods 81 are rotatably mounted at one end of the moving seat 51 through a rotating shaft 82. The interior of the moving seat 51 is hollow. A third gear 83 is coaxially mounted on the rotating shaft 82. A third rack 84 is slidably mounted inside the moving seat 51. The third gear 83 meshes with the third rack 84. A second electric push rod 85 is mounted inside the moving seat 51. The push rod of the second electric push rod 85 is connected to the third rack 84. During use, when the moving seat 51 moves along the slide rail 53 to below the profiling workpiece 12, then the second electric push rod 85 is started. During the starting process of the second electric push rod 85, it will push the third rack 84 to slide. During the movement of the third rack 84, it will push the third gear 83 to rotate. During the rotation of the third gear 83, it will drive the rotating shaft 82 to rotate. During the rotation of the rotating shaft 82, it will drive the retaining rod 81 to rotate. After rotation, the retaining rod 81 will be in the vertical direction. Therefore, when the moving seat 51 moves, the retaining rod 81 will drive the profiling workpiece 12 and the battery pack housing 9 to move synchronously. When the profiling workpiece 12 moves to the designated position, the push rod of the second electric push rod 85 is moved in the reverse direction, so that the retaining rod 81 rotates. After rotation, the length direction of the retaining rod 81 is parallel to the length direction of the moving seat 51. At this time, when the moving seat 51 moves, it will not drive the profiling workpiece 12 to move.

[0038] As Figures 1 to 10 shown, a detection block 121 is mounted on one side of the profiling workpiece 12. A connection jack 122 is formed on the detection block 121. A communication seat 151 is mounted on the positioning block 15. The communication seat 151 is slidably mounted on the positioning block 15. A positioning spring 152 is mounted on the communication seat 151. The other end of the positioning spring 152 is connected to the positioning block 15. A connection plug 153 is mounted on the communication seat 151. The connection plug 153 is inserted into the connection jack 122. When it is necessary to detect the profiling workpiece 12 located on the profiling workpiece 12, the two positioning blocks 15 are moved towards each other through the adjustment component 2. When the positioning block 15 moves, it will drive the communication seat 151 to move synchronously. The connection plug 153 on the communication seat 151 will be inserted into the connection jack 122. The buffer spring 44 will make the connection between the communication seat 151 and the detection block 121 more stable, so as to facilitate introducing high-pressure air between the profiling workpiece 12 and the battery pack housing 9 through the communication seat 151 for pressure holding test.

[0039] The implementation principle of this embodiment is as follows: After the battery pack housing 9 located on the first carrier 11 is detected, the first carrier 11 quickly descends vertically under the action of the first lifting assembly 3 to be flush with the bottom slide rail 53 of the conveying frame 16. Then, under the action of the conveying assembly 5, the profiling workpiece 12 and the battery pack housing 9 located on the first carrier 11 are synchronously moved to the second carrier 17. Then, under the action of the second lifting assembly 6, the detected battery pack housing 9 is lifted to be flush with the slide rail 53 at the top of the conveying frame 16, so as to facilitate the staff to remove the detected battery pack housing 9. Then, the battery pack housing 9 to be detected is placed on the profiling workpiece 12 for detection; during the process that the conveying assembly 5 synchronously moves the profiling workpiece 12 and the battery pack housing 9 located on the first carrier 11 to the second carrier 17, the first carrier 11 is quickly lifted to the original detection position under the action of the first lifting assembly 3, and the conveying assembly 5 located at the top of the conveying frame 16 moves the battery pack housing 9 to be detected on the second carrier 17 to the first carrier 11 for detection, thereby improving the detection efficiency.

[0040] The above is only the preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the above technical content within the scope of the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, all changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of this technical solution.

Claims

1. An airtight detection device, characterized in that: The invention comprises a fixed frame (1), a first bearing seat (11) is slidably provided on the fixed frame (1), a profiling workpiece (12) is provided on the first bearing seat (11), a pressing seat (13) is slidably provided on the fixed frame (1) and located on the top of the profiling workpiece (12), a plurality of pressing cylinders (14) are evenly provided on the top of the fixed frame (1), the piston rods of the plurality of pressing cylinders (14) are connected to the pressing seat (13), positioning blocks (15) are slidably provided on both sides of the fixed frame (1), the positioning blocks (15) are used to position the first bearing seat (11), and an adjustment component (13) for adjusting the positions of the two positioning blocks (15) is provided at one end of the fixed frame (1). 2), a first lifting assembly (3) for adjusting the position of a first bearing seat (11) is arranged on the fixed frame (1), a buffer assembly (4) for buffering the first bearing seat (11) is arranged at the bottom of the fixed frame (1), a conveying frame (16) is arranged on one side of the fixed frame (1), a conveying assembly (5) for conveying a contoured workpiece (12) is slidably arranged on the conveying frame (16), a second bearing seat (17) is slidably arranged on one end of the conveying frame (16) away from the fixed frame (1), a second lifting assembly (6) for adjusting the position of the second bearing seat (17) is arranged on the conveying frame (16), and a control cabinet (18) is fixedly arranged on one side of the fixed frame (1).

2. An airtight detection device according to claim 1, characterized in that: The adjustment assembly (2) comprises a mounting seat (21), a first sliding rod (22), a second sliding rod (23), a first gear (24), a second gear (25) and an adjustment motor (26); the mounting seat (21) is arranged at one end of the fixed frame (1) away from the conveying frame (16); the first sliding rod (22) and the second sliding rod (23) are both slidably arranged on the mounting seat (21); the first sliding rod (22) and the second sliding rod (23) correspond to two positioning blocks (15) one by one; the ends of the first sliding rod (22) and the second sliding rod (23) away from the mounting seat (21) are respectively connected to the two positioning blocks (15); the first sliding rod (22) is provided with a first rack (221); the second sliding rod (23) is provided with a second rack (231); the first gear (24) and the second gear (25) are provided with a first gear (25); The first gear (24) and the second gear (25) are both rotatably arranged on the mounting seat (21); the first gear (24) meshes with the first rack (221); the second gear (25) meshes with the second rack (231); a first connecting gear (222) and a second connecting gear (232) are rotatably arranged on the mounting seat (21); the first connecting gear (222) meshes with the second connecting gear (232); an end of the first connecting gear (222) away from the second connecting gear (232) meshes with the first gear (24); an end of the second connecting gear (232) away from the first connecting gear (222) meshes with the second gear (25); the adjustment motor (26) is arranged on the mounting seat (21); and an output shaft of the adjustment motor (26) is coaxially connected to the first gear (24).

3. The airtightness detection device according to claim 1, characterized in that: The first lifting assembly (3) comprises a lifting plate (31), the lifting plate (31) being fixedly arranged on a mounting seat (21) along a vertical direction, a sliding seat (32) being slidably arranged on the lifting plate (31), the top of the sliding seat (32) being connected to a first bearing seat (11), a fixing block (321) being arranged at the bottom of one side of the sliding seat (32), an abutting block (33) being rotatably arranged on the lifting plate (31), a return torsion spring being arranged on the abutting block (33), the abutting block (33) abutting against the fixing block (321), a limiting block (322) being arranged on a side of the sliding seat (32) away from the fixing block (321), and a limiting rod (321) for limiting the limiting block (322) being arranged on the lifting plate (31). 731), a lifting block (323) is arranged on the top of the sliding seat (32), a lifting drive disk (35) is rotatably arranged on the mounting seat (21), a lifting rod (351) is arranged on the lifting drive disk (35), the other end of the lifting rod (351) is slidably connected to the lifting block (323), a descending drive disk (36) is coaxially arranged on the lifting drive disk (35), a descending rod (361) is arranged on the descending drive disk (36), a toggle rod (332) is arranged on the abutting block (33), the other end of the descending rod (361) is slidably connected to the toggle rod (332), and a lifting motor (37) is arranged on the mounting seat (21), and the output shaft of the lifting motor (37) is coaxially connected to the lifting drive disk (35).

4. The airtightness detection device according to claim 3, characterized in that: An auxiliary rod (38) is slidably provided on the lifting plate (31), a return spring (381) is provided on the top of one end of the auxiliary rod (38), the other end of the return spring (381) is connected to the lifting plate (31), one end of the auxiliary rod (38) away from the return spring (381) is slidably connected to the abutment block (33), and one end of the auxiliary rod (38) close to the return spring (381) is slidably connected to the first sliding rod (22).

5. The airtightness detection device according to claim 1, characterized in that: The buffer assembly (4) comprises a buffer plate (41), a plurality of buffer rods (42) are evenly arranged at the bottom of the buffer plate (41), a plurality of fixed cylinders (43) are evenly arranged at the bottom of the fixed frame (1), the plurality of buffer rods (42) correspond to the plurality of fixed cylinders (43) one by one, the buffer rods (42) are slidably arranged in the fixed cylinders (43), a buffer spring (44) is arranged at the bottom of the buffer rod (42), and the buffer spring (44) is connected to the fixed cylinder (43).

6. The airtightness detection device according to claim 1, characterized in that: The conveying assembly (5) comprises a movable seat (51), rollers (52) are rotatably arranged on both sides of the movable seat (51), a plurality of slide rails (53) are arranged on the top and bottom of the conveying frame (16), two slide rails (53) located in the middle of the conveying frame (16) are provided with slide grooves (54), the rollers (52) on both sides of the movable seat (51) are slidably arranged in the slide grooves (54), a driving motor (55) for driving the rollers (52) to rotate is arranged inside the movable seat (51), and a pushing assembly (8) for pushing the contoured workpiece (12) to move is arranged on the movable seat (51).

7. The airtightness detection device according to claim 1, characterized in that: The second lifting assembly (6) comprises a lifting rail (61), the lifting rail (61) being arranged on one end of the conveying frame (16) away from the fixed frame (1) along the vertical direction, a lifting screw (62) being rotatably arranged in the lifting rail (61), the lifting screw (62) being threadedly connected to the second bearing seat (17), a driven conical wheel (63) being coaxially arranged at the bottom of the lifting screw (62), a second lifting motor (64) being arranged at the bottom of the conveying frame (16), an active conical wheel (65) being coaxially arranged on the output shaft of the second lifting motor (64), and the active conical wheel (65) being meshed with the driven conical wheel (63).

8. The airtightness detection device according to claim 1, characterized in that: The first bearing seat (11) and the second bearing seat (17) are of the same shape and size, and both the first bearing seat (11) and the second bearing seat (17) are provided with a fixing assembly (7) for fixing the profiling workpiece (12), the fixing assembly (7) comprising a fixing plate (71), the interior of the second bearing seat (17) being hollow, the fixing plate (71) being slidably arranged inside the second bearing seat (17), a mounting block (711) being arranged on the fixing plate (71), a mounting groove (72) being provided on the second bearing seat (17), the mounting block (711) being slidably arranged in the mounting groove (72), a fixing rod (73) being rotatably arranged on the mounting block (711), a limiting rod (731) being arranged at the top of the fixing rod (73), the fixing rod (73) being inserted into the profiling workpiece (12), and a worm gear (711) being coaxially arranged at the bottom of the fixing rod (73). 75), a rotary motor (76) is arranged inside the second bearing seat (17), a worm (77) is coaxially arranged on the output shaft of the rotary motor (76), the worm (77) is meshed with the worm wheel (75), and a first electric push rod (78) is arranged at the bottom of the second bearing seat (17), and the push rod of the first electric push rod (78) is connected to the fixing plate (71).

9. The airtightness detection device according to claim 6, characterized in that: The pushing assembly (8) comprises two blocking rods (81), and the two blocking rods (81) are rotatably arranged at one end of the moving seat (51) via a rotating shaft (82); the interior of the moving seat (51) is hollow, a third gear (83) is coaxially arranged on the rotating shaft (82), a third rack (84) is slidably arranged inside the moving seat (51), the third gear (83) meshes with the third rack (84), and a second electric push rod (85) is arranged inside the moving seat (51), and the push rod of the second electric push rod (85) is connected to the third rack (84).

10. The airtightness detection device according to claim 2, characterized in that: A detection block (121) is provided on one side of the profiling workpiece (12), a connection socket (122) is provided on the detection block (121), a connecting seat (151) is provided on the positioning block (15), the connecting seat (151) is slidably arranged on the positioning block (15), a positioning spring (152) is provided on the connecting seat (151), the other end of the positioning spring (152) is connected to the positioning block (15), and a connecting plug (153) is provided on the connecting seat (151), and the connecting plug (153) is inserted into the connection socket (122).

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