Filter assembly system

Abstract

This invention discloses a filter element assembly system, including a housing conveying device for conveying the housing, and a sealing ring assembly device, a cover plate spin-welding and spring assembly device, a plug assembly and marking device, an inner core assembly and end cap spin-welding device, and an airtightness testing device arranged sequentially along the conveying direction of the housing. The sealing ring assembly device assembles the sealing ring into the inlet and outlet ports of the housing; the cover plate spin-welding and spring assembly device fixes the cover plate to the end face of the housing and assembles the spring into the inlet and outlet ports; the plug assembly and marking device assembles the plug into the inlet and outlet ports of the housing and performs laser marking on the surface of the housing; the inner core assembly and end cap spin-welding device assembles the inner core into the housing and seals the end cap onto the opening at the bottom of the housing to produce the finished filter element; and the airtightness testing device tests the airtightness of the finished filter element. This invention can greatly improve the automation level of filter element assembly and increase production efficiency.

Description

Technical Field

[0001] This invention relates to the field of filter element assembly technology, and in particular to a filter element assembly system. Background Technology

[0002] Filter cartridges are devices specifically designed for filtering fluids. They separate impurities from fluids, keeping them clean, and are currently widely used in water purifiers and other fields. Existing filter cartridges generally consist of a filter housing and an inner core. During manufacturing, the housing and core need to be assembled together. Current manufacturing processes rely on manual labor, which makes it difficult to improve production efficiency. Summary of the Invention

[0003] This invention provides a filter element assembly system that can greatly improve the automation level of filter element assembly and increase production efficiency.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] Embodiments of the present invention provide a filter element assembly system, including a housing conveying device for conveying the housing, and a sealing ring assembly device, a cover plate spin-welding and spring assembly device, a plug assembly and marking device, an inner core assembly and end cap spin-welding device, and an airtightness testing device arranged sequentially along the conveying direction of the housing; the sealing ring assembly device is used to assemble the sealing ring into the inlet and outlet of the housing; the cover plate spin-welding and spring assembly device is used to fix the cover plate on the end face of the housing and assemble the spring into the inlet and outlet of the housing; the plug assembly and marking device is used to assemble the plug into the inlet and outlet of the housing and perform laser marking on the surface of the housing; the inner core assembly and end cap spin-welding device is used to assemble the inner core into the housing and seal the end cap on the opening at the bottom of the housing to form a finished filter element; the airtightness testing device is used to test the airtightness of the finished filter element.

[0006] In some embodiments, the sealing ring assembly device includes a sealing ring supply component, a sealing ring transport component, a transport connecting seat, a sealing ring clamping component, a sealing ring unloading component, and an oil supply component. The sealing ring supply component supplies sealing rings, and the oil supply component includes an oil box for loading oil. The sealing ring clamping component and the sealing ring unloading component are both mounted on the transport connecting seat, which is connected to the sealing ring transport component. The sealing ring transport component drives the transport connecting seat to move in three dimensions. The sealing ring clamping component clamps the sealing ring, and the sealing ring unloading component can move vertically relative to the sealing ring clamping component to detach the sealing ring from the sealing ring clamping component.

[0007] In some embodiments, the sealing ring clamping assembly includes a picking rod extending in a vertical direction, and the sealing ring unloading assembly includes a unloading sleeve sleeved outside the picking rod; the unloading sleeve can move downward relative to the picking rod to disengage the sealing ring from the picking rod.

[0008] In some embodiments, the cover plate spin-welding and spring assembly device includes a cover plate supply assembly, a cover plate assembly assembly, a cover plate spin-welding assembly, a spring supply assembly, and a spring assembly assembly. The cover plate supply assembly supplies a cover plate, the cover plate assembly assembly assembles the cover plate onto the top of the housing, the cover plate spin-welding assembly fixes the cover plate to the top of the housing, the spring supply assembly supplies a spring, and the spring assembly assembly assembles the spring into the inlet and outlet ports of the housing.

[0009] In some embodiments, the spring supply assembly includes a spring supply mechanism, a dropping seat, a switching mechanism, and a receiving tray mechanism. The bottom surface of the dropping seat is provided with a dropping through hole. The receiving tray mechanism includes a rotatable receiving tray, the top surface of which is provided with multiple receiving holes. The receiving holes of the receiving tray can be rotated to the bottom of the dropping seat so that the receiving holes align with the dropping through holes, and can also be rotated out from the bottom of the dropping seat. The switching mechanism is disposed on the dropping seat and can control the dropping through holes to open or close, so as to control each individual spring falling into the receiving hole.

[0010] In some embodiments, the plug assembly and marking device includes a plug supply component, a plug assembly component, an auxiliary positioning component, and a laser marking component. The housing conveying device includes a first conveying component, a flipping conveying component, and a second conveying component. The plug supply component is used to supply plugs. The plug assembly component is used to assemble the plugs onto the housing conveyed by the first conveying component. The first conveying component is used to convey the housing with the plugs assembled to the flipping conveying component. The flipping conveying component is used to flip the housing so that its bottom faces upward and convey the flipped housing to the second conveying component. The auxiliary positioning component is used to press and position the housing conveyed by the second conveying component. The laser marking component is used to perform laser marking on the surface of the housing pressed and positioned by the auxiliary positioning component.

[0011] In some embodiments, the flipping conveying assembly includes a conveying base plate, a base plate rotation mechanism connected to the conveying base plate, a flipping lifting mechanism, a flipping drive mechanism connected to the flipping lifting mechanism, and a flipping clamp connected to the flipping drive mechanism; both ends of the conveying base plate are provided with shell slots for placing shells, the base plate rotation mechanism is used to drive the conveying base plate to rotate; the flipping lifting mechanism is used to drive the flipping drive mechanism to move in the vertical direction, the flipping drive mechanism is used to drive the flipping clamp to rotate, and the flipping clamp is used to clamp the shell or release the shell.

[0012] In some embodiments, the inner core assembly and end cap spin-welding device includes an inner core feeding assembly, an inner core assembly assembly, an end cap supply assembly, an end cap assembly assembly, and an end cap spin-welding assembly. The inner core feeding assembly is used to feed an inner core to the inner core assembly assembly, the inner core assembly assembly is used to assemble the inner core into the housing, the end cap supply assembly is used to supply an end cap to the end cap assembly assembly, the end cap assembly assembly is used to assemble the end cap into the opening of the housing, and the end cap spin-welding assembly is used to spin-weld and fix the end cap.

[0013] In some embodiments, the airtightness testing device includes a testing platform and a product handling device. The testing platform is provided with a plurality of airtightness testing components. The product handling device is used to place the product to be tested on the airtightness testing components and to dock the product to be tested with the airtightness testing components. The airtightness testing components are used to perform airtightness testing on the product to be tested docked with them. The product handling device is also used to remove the product that has completed the airtightness testing from the airtightness testing components.

[0014] In some embodiments, the airtightness testing component includes a testing plate and a testing gas path integration. The top surface of the testing plate is provided with a plurality of air holes adapted to the fluid inlet and fluid outlet of the product to be tested, respectively. The testing gas path integration is connected to the testing plate and communicates with the air holes.

[0015] The present invention has at least the following beneficial effects: The outer shell conveying device of the present invention conveys the outer shell to the sealing ring assembly device, the cover plate spinning and spring assembly device, the plug assembly and marking device, the inner core assembly and end cap spinning and welding device, and the airtightness testing device. The sealing ring assembly device is used to assemble the sealing ring into the inlet and outlet of the outer shell. The cover plate spinning and spring assembly device is used to fix the cover plate on the end face of the outer shell and assemble the spring into the inlet and outlet of the outer shell. The plug assembly and marking device is used to assemble the plug into the inlet and outlet of the outer shell and perform laser marking on the surface of the outer shell. The inner core assembly and end cap spinning and welding device is used to assemble the inner core into the outer shell and seal the end cap on the opening at the bottom of the outer shell to produce the finished filter element. The airtightness testing device is used to test the airtightness of the finished filter element. The entire process is automated by mechanical equipment, which can greatly improve the automation level of filter element assembly and improve production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a filter element assembly system according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the sealing ring assembly device for a filter element according to an embodiment of the present invention;

[0018] Figure 3This is a schematic diagram of the sealing ring assembly device for a filter element according to an embodiment of the present invention from another perspective;

[0019] Figure 4 This is a schematic diagram of the structure of a sealing ring transport assembly, a transport connecting seat, a sealing ring clamping assembly, and a sealing ring unloading assembly according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the sealing ring transport assembly, transport connecting seat, sealing ring clamping assembly and sealing ring unloading assembly according to an embodiment of the present invention, viewed from another perspective.

[0021] Figure 6 This is a schematic diagram of the structure of the transport connection seat, the sealing ring clamping assembly, and the sealing ring unloading assembly according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the sealing ring supply assembly and oil supply assembly according to an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the cover plate spin welding and spring assembly device according to an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the structure of a spring supply assembly according to an embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the structure of a plug assembly and marking device according to an embodiment of the present invention;

[0026] Figure 11 This is a schematic diagram of the structure of a plug supply assembly and a plug assembly according to an embodiment of the present invention;

[0027] Figure 12 This is a schematic diagram of the structure of a flipping conveyor assembly according to an embodiment of the present invention;

[0028] Figure 13 This is a schematic diagram of the structure of an inner core assembly and end cap spin-welding device according to an embodiment of the present invention;

[0029] Figure 14 This is a top view schematic diagram of the inner core assembly and end cap spin-welding device according to an embodiment of the present invention;

[0030] Figure 15 This is a schematic diagram of the structure of an airtightness testing device according to an embodiment of the present invention;

[0031] Figure 16 This is a schematic diagram of the structure of a detection station according to an embodiment of the present invention;

[0032] Figure 17 This is a schematic diagram of the structure of an airtightness detection component according to an embodiment of the present invention;

[0033] Figure 18 This is a schematic diagram of the structure of a product handling device according to an embodiment of the present invention.

[0034] The attached figures are labeled as follows:

[0035] Outer shell 10, inner core 11, end cap 12;

[0036] The outer casing conveying device 200, the first conveying component 210, the second conveying component 220, the flipping conveying component 230, the conveying base plate 231, the base plate rotating mechanism 232, the outer casing slot 233, the flipping lifting mechanism 234, the flipping drive mechanism 235, and the flipping clamp 236.

[0037] The system includes: a sealing ring assembly device 300; a sealing ring conveying assembly 310; a sealing ring lateral moving mechanism 311; a sealing ring longitudinal moving mechanism 312; a sealing ring vertical moving mechanism 313; a conveying connecting seat 320; a sealing ring clamping assembly 330; a material picking rod 331; a sealing ring clamp driver 332; a sealing ring unloading assembly 340; an unloading sleeve 341; a sealing ring unloading plate 342; a filter element positioning frame 343; a sliding guide rod 344; a sliding sleeve 345; an unloading limit block 346; an oil supply assembly 350; an oil box 351; an oiling mechanism 352; a sealing ring supply assembly 360; a sealing ring placement seat 361; a sealing ring conveying mechanism 362; and a sealing ring placement groove 363.

[0038] Cover plate spinning and spring assembly device 400, cover plate supply assembly 410, cover plate assembly assembly 420, cover plate spinning assembly 430, spring supply assembly 440, spring supply mechanism 441, spring supply tube 442, material drop seat 443, switching mechanism 444, material receiving tray mechanism 445, material receiving tray 446, rotary drive 447, material receiving hole 448, spring assembly assembly 450;

[0039] 500 plug assembly and marking device, 510 plug supply component, 520 plug assembly component, 530 auxiliary positioning component, 540 laser marking component, 550 housing positioning component;

[0040] The inner core assembly and end cap spin welding device 700, the inner core feeding assembly 710, the inner core assembly assembly 720, the end cap supply assembly 730, the end cap assembly assembly 740, and the end cap spin welding assembly 750 are all included.

[0041] Air tightness testing device 600, testing table 610; product handling device 620, multi-axis robotic arm 621, product clamp 622, gripper 623, inner groove 624; air tightness testing component 630, testing plate 631, integrated testing air circuit 632, air hole 633, positioning groove 634; clamping component 640, clamping bracket 641, clamping driver 642, clamping plate 643, clamping guide rod 644, clamping guide cylinder 645; qualified product unloading component 651, unqualified product unloading component 652. Detailed Implementation

[0042] The present invention is provided below with reference to the accompanying drawings to aid in a full understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0043] In the description of this invention, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0044] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0045] Embodiments of the present invention provide a filter element assembly system, such as... Figure 1 As shown, the system includes a housing conveying device 200 for conveying the housing, and sequentially arranged along the conveying direction of the housing are a sealing ring assembly device 300, a cover plate spinning and spring assembly device 400, a plug assembly and marking device 500, an inner core assembly and end cap spinning and welding device 700, and an airtightness testing device 600. The housing conveying device 200 sequentially conveys the initially empty filter element housing to the sealing ring assembly device 300, the cover plate spinning and spring assembly device 400, the plug assembly and marking device 500, and the inner core assembly and end cap spinning and welding device 700, where the assembly devices assemble the finished product, which is then conveyed to the airtightness testing device 600. The housing conveying device 200 can interface with a housing supply assembly, allowing the housing supply assembly to deliver the initial housing to the housing conveying device 200; for example, the housing can be handled by a robotic arm. Alternatively, the housing can be manually placed onto the housing conveying device 200.

[0046] The top surface of the outer casing has inlet and outlet ports and a cover plate mounting groove. A sealing ring assembly device 300 is used to assemble the sealing ring into the inlet and outlet ports of the outer casing. A cover plate spin-welding and spring assembly device 400 is used to fix the cover plate in the cover plate mounting groove on the top surface of the outer casing and assemble the spring into the inlet and outlet ports of the outer casing. A plug assembly and marking device 500 is used to assemble the plug into the inlet and outlet ports of the outer casing and perform laser marking on the surface of the outer casing to print relevant information about the filter element. An inner core assembly and end cap spin-welding device 700 is used to assemble the inner core into the outer casing and seal the end cap on the opening at the bottom of the outer casing, blocking the opening and enclosing the inner core, thereby producing the finished filter element. An airtightness testing device 600 is used to test the airtightness of the finished filter element. In this embodiment, the entire process is automated by mechanical equipment, which can greatly improve the automation level of filter element assembly and increase production efficiency.

[0047] In this embodiment, the outer shell conveying device 200, the sealing ring assembly device 300, the cover plate spinning and spring assembly device 400, the plug assembly and marking device 500, the inner core assembly and end cap spinning and welding device 700, and the airtightness detection device 600 can all be connected to the control module. The control module sends corresponding control commands to the outer shell conveying device 200, the sealing ring assembly device 300, the cover plate spinning and spring assembly device 400, the plug assembly and marking device 500, the inner core assembly and end cap spinning and welding device 700, and the airtightness detection device 600 according to the preset control program, so that the outer shell conveying device 200, the sealing ring assembly device 300, the cover plate spinning and spring assembly device 400, the plug assembly and marking device 500, the inner core assembly and end cap spinning and welding device 700, and the airtightness detection device 600 coordinate with each other to complete the above-mentioned filter element assembly process.

[0048] In some embodiments, the housing conveying device 100 may include a plurality of housing conveying assemblies, which may be sequentially connected along the conveying direction to smoothly convey the housing. The housing conveying assemblies may include conveyor belts, linear guides, etc., and may include housing placement seats with housing placement slots, in which the housing can be inserted to keep the housing stable and prevent displacement or slippage during conveying.

[0049] In some embodiments, such as Figure 1-7As shown, the sealing ring assembly device 300 includes a sealing ring supply assembly 360, a sealing ring conveying assembly 310, a conveying connecting seat 320, a sealing ring clamping assembly 330, a sealing ring unloading assembly 340, and an oil supply assembly 350. The sealing ring supply assembly 360 supplies sealing rings, and the oil supply assembly 350 includes an oil box 351 for loading oil. After the sealing ring is soaked in oil, it can fit more tightly against the inner wall of the inlet and outlet, improving sealing performance. The sealing ring clamping assembly 330 and the sealing ring unloading assembly 340 are both mounted on the conveying connecting seat 320, and therefore move synchronously with the conveying connecting seat 320. The conveying connecting seat 320 is connected to the sealing ring conveying assembly 310, which drives the conveying connecting seat 320 to move in three dimensions, specifically, it can drive the conveying connecting seat 320 to move laterally, longitudinally, and vertically. The sealing ring clamping assembly 330 is used to clamp the sealing ring. The sealing ring feeding assembly 340 can move vertically relative to the sealing ring clamping assembly to detach the sealing ring from the sealing ring clamping assembly 330. During operation, the sealing ring transport assembly 310 first moves the sealing ring clamping assembly 330 closer to the output end of the sealing ring supply assembly 360, where the sealing ring clamping assembly 330 clamps the sealing ring. The sealing ring transport assembly 310 then moves the sealing ring held by the sealing ring clamping assembly 330 to absorb oil from the oil box 351. Finally, the sealing ring transport assembly 310 moves the sealing ring held by the sealing ring clamping assembly 330 closer to the outer shell, so that the sealing ring aligns with the inlet and outlet ports on the outer shell 10. Afterward, the sealing ring feeding assembly 340 can move vertically relative to the sealing ring clamping assembly 330 to detach the sealing ring from the sealing ring clamping assembly 330 and then assemble it onto the filter element.

[0050] In this embodiment, since the sealing ring needs to abut against the inner wall of the inlet and outlet on the outer shell, the sealing ring clamping assembly 330 needs to deform the sealing ring along its radial direction. Since the sealing ring has elasticity, it is not easy to fall off the sealing ring clamping assembly 330. In this embodiment, the sealing ring is moved along its axial direction by the sealing ring feeding assembly 340, so that the sealing ring can be detached from the sealing ring clamping assembly 330 and then assembled onto the filter element.

[0051] In some embodiments, the sealing ring clamping assembly 330 includes a vertically extending picking rod 331, and the sealing ring unloading assembly 340 includes a unloading sleeve 341 sleeved on the outside of the picking rod 331. The sealing ring can be sleeved on the picking rod 331 to clamp it. A vacuum nozzle can also be provided at the lower end of the picking rod 331 to clamp the sealing ring by vacuum adsorption. The unloading sleeve 341 can move downwards relative to the picking rod 331, thus disengaging the sealing ring from the picking rod 331. Furthermore, the diameter of the picking rod 331 is slightly larger than the inner diameter of the sealing ring. When clamping the sealing ring, the picking rod 331 is inserted into the center hole of the sealing ring, allowing the sealing ring to be sleeved on the picking rod 331. When the unloading sleeve 341 moves downwards relative to the picking rod 331, the sealing ring can be detached from the picking rod 331. Using a sealing ring to connect the material picking rod 331 facilitates the connection between the material picking rod 331 and the inlet / outlet on the outer casing 10.

[0052] In some embodiments, the sealing ring feeding assembly 340 further includes a sealing ring feeding plate 342 located below the transport connecting seat 320, and a feeding sleeve 341 fixed on the sealing ring feeding plate 342. The sealing ring clamping assembly 330 further includes a sealing ring clamping driver 332 fixed on the transport connecting seat 320. The sealing ring clamping driver 332 is connected to the picking rod 331 and is used to drive the picking rod 331 to move vertically. When the sealing ring clamping driver 332 drives the picking rod 331 to move downward vertically, the picking rod 331 can be inserted into the center hole of the sealing ring to clamp the sealing ring. When the sealing ring clamping driver 332 drives the picking rod 331 to move upward vertically, the feeding sleeve 341 moves downward relative to the picking rod 331 to disengage the sealing ring on the picking rod 331. The sealing ring clamping driver 332 may be a cylinder.

[0053] Furthermore, the sealing ring feeding plate 342 and the conveying connecting seat 320 are slidably connected in the vertical direction. The bottom surface of the sealing ring feeding plate 342 is fixed with a filter element positioning frame 343 for positioning the housing 10. When the sealing ring conveying assembly 310 drives the conveying connecting seat 320 to move downward, the filter element positioning frame 343 first contacts the housing 10 and positions the housing 10, making the housing 10 less prone to shaking and ensuring that the material picking rod 331 can accurately connect with the inlet and outlet of the housing 10.

[0054] In this embodiment, the inner wall of the inlet and outlet on the outer casing 10 may be provided with an annular groove for installing the sealing ring. In the above embodiment, the outer diameter of the picking rod 331 is smaller than the diameter of the inlet and outlet, and the outer diameter of the discharging sleeve 341 is slightly smaller than the diameter of the inlet and outlet. After the picking rod 331 obtains the sealing ring, the sealing ring conveying assembly 310 drives the picking rod 331 to align with the inlet and outlet, and then drives the conveying connecting seat 320 to move downward. The filter element positioning frame 343 first contacts the outer casing to position the outer casing. Both the picking rod 331 and the discharging sleeve 341 are inserted into the inlet and outlet, and the bottom end of the discharging sleeve 341 is just located on the inner wall of the inlet and outlet. Above the annular groove, the sealing ring is fed into the inlet and outlet. However, since the sealing ring is still on the pick-up rod 331, in order to prevent the sealing ring from being pulled out when the pick-up rod 331 moves upward to reset, the sealing ring clamp driver 332 drives the pick-up rod 331 to move upward. The position of the unloading sleeve 341 relative to the outer shell remains unchanged, thereby keeping the sealing ring in the annular groove. When the sealing ring is completely detached from the pick-up rod 331, the sealing ring conveying assembly 310 drives the conveying connecting seat 320 to move upward to reset, thereby completing the assembly of the sealing ring.

[0055] The sealing ring feeding plate 342 has multiple vertically extending sliding guide rods 344 fixed on it, and the transport connecting seat 320 has multiple sliding sleeves 345 that are adapted to the sliding guide rails 344 fixed on it. The sliding guide rods 344 are inserted into the sliding sleeves 345 and can move in the sliding sleeves 345, so as to realize the sliding connection between the sealing ring feeding plate 342 and the transport connecting seat 320 in the vertical direction.

[0056] Furthermore, the top surface of the sealing ring feeding plate 342 is also provided with a feeding limit block 346 located between the sealing ring feeding plate 342 and the transport connecting seat 320, so as to limit the sealing ring feeding plate 342 from moving too far upward relative to the transport connecting seat 320.

[0057] In some embodiments, the oil supply assembly 350 further includes a refueling mechanism 352 that interfaces with the oil tank 351. The refueling mechanism 352 can replenish oil to the oil tank 351 to maintain the liquid level in the oil tank 351 and prevent the sealing ring from failing to pick up the oil. Specifically, the refueling mechanism 352 may include a refueling nozzle and an oil container connected to the refueling nozzle.

[0058] In some embodiments, the sealing ring supply assembly 360 includes a sealing ring conveying mechanism 362 and a sealing ring placement seat 361 connected to the sealing ring conveying mechanism 362. The sealing ring conveying mechanism 362 is used to convey sealing rings to the sealing ring placement seat 361, thereby enabling a continuous supply of sealing rings. The sealing ring handling assembly 310 is used to drive the sealing ring clamping assembly to clamp the sealing rings on the sealing ring placement seat 361.

[0059] Furthermore, the sealing ring placement seat 361 is provided with a sealing ring placement groove 363. The sealing ring conveying mechanism 361 includes a sealing ring vibrating plate. The sealing ring placement groove 363 is connected to the output track of the sealing ring vibrating plate. The sealing ring vibrating plate vibrates the sealing ring inside it to the output track, and then the sealing ring slides down along the output track to the sealing ring placement groove 363. The sealing ring placement groove 363 can play a positioning role for the sealing ring, so that the sealing ring maintains a relatively fixed position on the sealing ring placement seat 361, which makes it convenient for the sealing ring clamping component to accurately clamp the sealing ring.

[0060] In some embodiments, the sealing ring transport assembly 310 includes a sealing ring lateral moving mechanism 311, a sealing ring longitudinal moving mechanism 312 connected to the sealing ring lateral moving mechanism 311, and a sealing ring vertical moving mechanism 313 connected to the sealing ring longitudinal moving mechanism 312. The transport connecting seat 320 is connected to the sealing ring vertical moving mechanism 313. The sealing ring lateral moving mechanism 311 drives the sealing ring longitudinal moving mechanism 312 to move laterally, the sealing ring longitudinal moving mechanism 312 drives the sealing ring vertical moving mechanism 313 to move longitudinally, and the sealing ring vertical moving mechanism 313 drives the transport connecting seat 320 to move vertically, thus enabling three-dimensional movement of the transport connecting seat 320. The lateral, longitudinal, and vertical directions are perpendicular to each other. The sealing ring lateral moving mechanism 311, the sealing ring longitudinal moving mechanism 312, and the sealing ring vertical moving mechanism 313 can each include a guide rail in the corresponding direction, a slider that slides along the guide rail, and a corresponding driver that drives the slider to move along the guide rail.

[0061] In some embodiments, such as Figure 1 , Figure 8 and Figure 9 As shown, the cover plate spin-melting and spring assembly device 400 includes a cover plate supply assembly 410, a cover plate assembly assembly 420, a cover plate spin-melting assembly 430, a spring supply assembly 440, and a spring assembly assembly 450. The cover plate supply assembly 410 supplies a cover plate and can output the cover plate outwards for assembly onto the housing 10. The cover plate assembly assembly 420 clamps the cover plate supplied by the cover plate supply assembly 410 and assembles the cover plate into a cover plate mounting groove on the top of the housing 10. The cover plate spin-melting assembly 430 spin-melts and fixes the cover plate to the top of the housing 10, connecting the cover plate and the housing 10 as a single unit. The spring supply assembly 440 supplies a spring and can output the spring outwards for assembly. The spring assembly assembly 450 clamps the spring supplied by the spring supply assembly 440 and assembles the spring into the inlet / outlet of the housing 10, thereby completing the fixing of the cover plate on the end face of the housing and the assembly of the spring into the inlet / outlet of the housing.

[0062] Furthermore, the cover plate assembly 420 may include a three-dimensional moving mechanism and a clamp connected to the three-dimensional moving mechanism. The clamp can hold the cover plate, and the three-dimensional moving mechanism can drive the clamp to move in three dimensions in the horizontal, longitudinal and / or vertical directions. Thus, the three-dimensional moving mechanism can drive the clamp to approach the cover plate supply assembly 410, the clamp holds the cover plate, the three-dimensional moving mechanism then drives the clamp to approach the housing 10, the clamp releases its grip on the cover plate, so that the cover plate is assembled onto the housing 10, and then the three-dimensional moving mechanism drives the clamp to reset.

[0063] Similarly, the spring assembly 450 may also include a three-dimensional moving mechanism and a clamp connected to the three-dimensional moving mechanism. The clamp can hold the spring, and the three-dimensional moving mechanism can drive the clamp to move in three dimensions in the horizontal, vertical and / or vertical directions. Thus, the three-dimensional moving mechanism can drive the clamp to approach the spring supply assembly 440, where the clamp holds the spring. The three-dimensional moving mechanism then drives the clamp to approach the housing 10 and connect with the inlet and outlet ports on the housing 10. The clamp releases its grip on the spring, so that the spring is assembled into the inlet and outlet ports of the housing 10. After that, the three-dimensional moving mechanism drives the clamp to reset.

[0064] The clamp can grip the cover plate or spring in various ways, such as by gripping with claws, vacuum adsorption, or magnetic adsorption.

[0065] In some embodiments, the cover plate supply assembly 410 includes a cover plate tray and a cover plate tray moving mechanism connected to the cover plate tray. Multiple cover plates are placed on the cover plate tray for the cover plate assembly 420 to grip. The cover plate tray moving mechanism can drive the cover plate tray to move up and down and laterally. The cover plate tray has a loading station. The cover plate tray loaded with cover plates can be conveyed to below the loading station. The cover plate tray moving mechanism then drives the cover plate tray loaded with cover plates to move upwards to the loading station. The cover plate assembly 420 grips the cover plates on the cover plate tray located at the loading station. When all the cover plates on the cover plate tray at the loading station are removed, the cover plate tray moving mechanism then drives the hole cover plate tray to move laterally to remove it from the loading station, and then moves the empty cover plate tray downwards, thereby enabling cyclical material supply.

[0066] In some embodiments, the spring supply assembly 440 includes a spring supply mechanism 441, a dropping seat 443, a switching mechanism 444, and a receiving tray mechanism 445. The bottom surface of the dropping seat 443 is provided with a dropping through hole. The receiving tray mechanism 445 includes a rotatable receiving tray 446 and a rotation driver 447 connected to the receiving tray 446. The rotation driver 447 can drive the receiving tray 446 to rotate on a horizontal plane. The top surface of the receiving tray 446 is provided with a plurality of receiving holes 448. When the receiving tray 446 rotates, the receiving holes 448 on the receiving tray 446 can rotate to the underside of the dropping seat 443 so that the receiving holes 448 align with the dropping through hole, and can also rotate out from the underside of the dropping seat 443. The switching mechanism 444 is disposed on the dropping seat 443 and can control the opening or closing of the dropping through hole to control the single spring falling into the receiving hole 448 each time.

[0067] The spring supply mechanism 441 outputs springs one by one, and the springs then enter the discharge through hole. When the receiving hole 448 aligns with the discharge through hole, the switching mechanism 444 makes the discharge through hole open, and the spring can fall into the receiving hole 448. The rotating driver 447 then drives the receiving hole 448 containing the spring to move out from under the discharge seat 443. The spring assembly 450 removes the spring from the receiving hole 448 below the discharge seat 443. The unloaded receiving hole 448 can then be rotated to align with the discharge through hole, thereby continuously supplying springs to the outside.

[0068] In this embodiment, the diameter of the discharge through hole is slightly larger than the diameter of a spring, allowing the springs to fall downwards one by one within the discharge through hole. The distance from the bottom surface of the receiving hole 448 to the bottom surface of the discharge seat 443 can be slightly greater than the length of a spring. When the lower spring falls into the receiving hole 448, the upper spring remains in the discharge through hole, ensuring that multiple springs do not fall into the receiving hole 448 simultaneously. The switching mechanism 444 may include a cylinder and a pressure rod connected to the cylinder. The side of the discharge seat 443 is provided with a pressure hole communicating with the discharge through hole. The pressure rod extends out of the pressure hole and can move within it. When the lower spring falls into the receiving hole 448, the cylinder drives the pressure rod to move inwards towards the pressure hole, pressing the upper spring against the inner wall of the receiving channel, preventing the spring from falling and thus cutting off the discharge through hole. When the next receiving hole 448 moves to align with the discharge through hole, the cylinder drives the pressure rod to move outward from the pressure hole to release the tightly pressed spring. The spring in the discharge through hole can then fall into the receiving hole 448. This allows control to ensure that each individual spring falls into the receiving hole 448 each time.

[0069] Furthermore, the spring supply mechanism 441 includes a spring vibratory feeder and a spring supply pipe 442 connected to the spring vibratory feeder. The spring supply pipe 442 is connected to the material discharge through-hole. The spring vibratory feeder outputs springs one by one, and the springs fall into the material discharge through-hole along the spring supply pipe 442. The spring supply pipe 442 can be a flexible hose, which can be bent as needed to allow the springs to move smoothly along it. The spring supply pipe 442 can also be made of a transparent material to facilitate observation of the spring movement within it. If blockage occurs in the spring supply pipe 442, it allows for timely adjustment by staff to ensure production efficiency.

[0070] In some embodiments, such as Figure 1 , Figure 10 , Figure 11 and Figure 12 As shown, the plug assembly and marking device 500 includes a plug supply component 510, a plug assembly component 520, an auxiliary positioning component 530, and a laser marking component 540. The shell conveying device 200 includes a first conveying component 210, a flipping conveying component 230, and a second conveying component 220. The first conveying component 210, the flipping conveying component 230, and the second conveying component 220 are all used to convey the shell 10. The first conveying component 210 receives the shell 10 processed by the cover plate spin welding and spring assembly device 400. The second conveying component 220 finally conveys the shell 10 processed by the plug assembly and marking device 500 to the inner core assembly and end cap spin welding device 700.

[0071] The plug supply assembly 510 supplies plugs and outputs them for assembly. The plug assembly assembly 520 picks up the plugs supplied by the plug supply assembly 510 and assembles them onto the housing 10 conveyed by the first conveying assembly 210. The first conveying assembly 210 conveys the housing 10 with the assembled plugs to the flipping conveying assembly 230, which flips the housing 10 180 degrees so that the bottom of the housing 10 faces upward, exposing the opening at the bottom of the housing 10 for subsequent insertion of the inner core. After flipping the housing 10, the flipping conveying assembly 230 also conveys the housing 10 to the second conveying assembly 220, which continues to convey the housing 10. The second conveying assembly 220 has a marking station. When the second conveying assembly 220 conveys the housing 10 to the marking station, the auxiliary positioning assembly 530 presses and positions the housing 10 at the marking station to keep the housing stable and ensure the quality of laser marking. The laser marking component 540 is used to perform laser marking on the surface of the housing 10, which is pressed and positioned by the auxiliary positioning component 530, to print filter element related information.

[0072] In some embodiments, the plug supply assembly 510 may include a plug vibratory feeder and a plug placement seat. The plug vibratory feeder outputs plugs one by one, and the plugs slide down along the track on the plug vibratory feeder to the plug placement seat. The plug assembly assembly 520 picks up the plugs from the plug placement seat.

[0073] In some embodiments, the plug assembly 520 may include a three-dimensional moving mechanism and a clamp connected to the three-dimensional moving mechanism. The clamp can hold the plug, and the three-dimensional moving mechanism can drive the clamp to move in three dimensions: laterally, longitudinally, and / or vertically. This allows the three-dimensional moving mechanism to bring the clamp closer to the plug placement seat, where the clamp holds the plug. The three-dimensional moving mechanism then brings the clamp closer to the housing 10 and aligns it with the inlet / outlet on the housing 10. The clamp then releases its grip on the plug, allowing the plug to be assembled into the inlet / outlet of the housing 10. Afterward, the three-dimensional moving mechanism drives the clamp to reset. The clamp can use various methods such as gripper gripping or vacuum suction to pick up the plug.

[0074] Furthermore, in order to ensure that the plug can be accurately assembled into the inlet and outlet of the housing 10, the plug assembly and marking device 500 of this embodiment also includes a housing positioning assembly 550. The housing positioning assembly 550 includes a pressure plate and a pressure plate moving mechanism connected to the pressure plate. The pressure plate moving mechanism can drive the pressure plate to move along a conveying direction perpendicular to the housing 10. Figure 11 As shown, when the outer shell 10 moves to the front of the pressure plate, the pressure plate moving mechanism drives the pressure plate to move towards the outer shell 10, and the pressure plate can press the outer shell 10 forward so that the outer shell 10 can maintain its position, and the plug held by the clamp can accurately connect with the inlet and outlet of the outer shell 10.

[0075] In some embodiments, the flipping conveying assembly 230 includes a conveying base plate 231, a base plate rotation mechanism 232 connected to the conveying base plate 231, a flipping lifting mechanism 234, a flipping drive mechanism 235 connected to the flipping lifting mechanism 234, and a flipping clamp 236 connected to the flipping drive mechanism 235. Both ends of the conveying base plate 231 are provided with housing slots 233 for placing the housing 10. The base plate rotation mechanism 232 drives the conveying base plate 231 to rotate. The flipping lifting mechanism 234 drives the flipping drive mechanism 234 to move vertically, and the flipping drive mechanism 235 drives the flipping clamp 236 to rotate. The flipping clamp 236 is used to clamp or release the housing 10.

[0076] During operation, the first conveying assembly 210 inserts the housing 10 with the plug into the housing slot 233 to stabilize the housing 10. A flipping clamp 236 holds the housing 10 inserted into the housing slot 233. A flipping lifting mechanism 234 drives the flipping clamp 236 upward to pull the housing 10 out of the housing slot 233. The flipping drive mechanism 234 then drives the flipping clamp 236 to rotate 180 degrees, so that the bottom of the housing 10 faces upward. The flipping lifting mechanism 234 then drives the flipping clamp 236 downward to insert the flipped housing 10 into the housing slot 233. The flipping clamp 236 then releases its grip on the housing 10. A base plate rotation mechanism 232 drives the conveying base plate 231 to rotate, causing the flipped housing 10 to move closer to the second conveying assembly 220, which then removes the flipped housing 10. As the flipped housing 10 moves toward the second conveyor assembly 220, the empty housing slot 233 moves toward the first conveyor assembly 210 and the flipping fixture 236 to flip the next housing 10.

[0077] In some embodiments, such as Figure 1 , Figure 13 and Figure 14 As shown, the inner core assembly and end cap spin-welding device 700 includes an inner core feeding assembly 710, an inner core assembly assembly 720, an end cap supply assembly 730, an end cap assembly assembly 740, and an end cap spin-welding assembly 750. The inner core feeding assembly 710 is used to feed the inner core 11 to the inner core assembly assembly 720. The inner core assembly assembly 720 is used to clamp the inner core 11 fed by the inner core feeding assembly 710 and then assemble the inner core 11 into the outer shell 10. The end cap supply assembly 730 is used to supply the end cap 12 to the end cap assembly assembly 740. The end cap assembly assembly 740 is used to clamp the end cap supplied by the end cap supply assembly 730 and assemble the end cap 12 into the opening of the outer shell 10. The end cap spin-welding assembly 750 is used to spin-weld and fix the end cap 12 to seal the opening of the outer shell 10 and enclose the inner core 11 inside.

[0078] In some embodiments, the inner core feeding assembly 710 may include a conveyor belt and an inner core placement seat fixed to the conveyor belt, the inner core placement seat being provided with an inner core slot. An operator can manually insert the inner core into the inner core slot, or a robotic arm can hold the inner core and then automatically insert it into the inner core slot. The conveyor belt transports the inner cores on the inner core placement seat to the inner core assembly assembly 720.

[0079] In some embodiments, the inner core assembly 720 includes a two-dimensional moving mechanism and a clamp connected to the two-dimensional moving mechanism. The clamp can grip the inner core 11. The two-dimensional moving mechanism can drive the clamp to move along a conveying direction perpendicular to the outer shell 10, and can also drive the outer shell 10 in a vertical direction. Thus, the two-dimensional moving mechanism can drive the clamp closer to the inner core feeding assembly 710, and the clamp can grip the inner core 11 on the inner core feeding assembly 710. The two-dimensional moving mechanism then drives the clamp closer to the outer shell 10 on the first conveying assembly 210 to insert the inner core 11 into the outer shell 10, completing the assembly of the inner core 11. The clamp can grip the inner core 11 using a gripper gripping method.

[0080] In some embodiments, the end cap supply assembly 730 includes an end cap tray and an end cap tray moving mechanism connected to the end cap tray. Multiple end caps are placed on the end cap tray for the end cap assembly assembly 740 to grip. The end cap tray moving mechanism can drive the end cap tray to move up and down and laterally. The end cap tray has a loading station. The end cap tray loaded with end caps can be conveyed to below the loading station. The end cap tray moving mechanism then drives the end cap tray loaded with end caps upward to the loading station. The end cap assembly assembly 740 grips the end caps on the end cap tray located at the loading station. When all the end caps on the end cap tray at the loading station are removed, the end cap tray moving mechanism then drives the empty end cap tray to move laterally to remove it from the loading station, and then moves the empty end cap tray downward, thereby enabling cyclical feeding.

[0081] In some embodiments, the end cap assembly 740 may include a three-dimensional moving mechanism and a clamp connected to the three-dimensional moving mechanism. The clamp can hold the end cap, and the three-dimensional moving mechanism can drive the clamp to move in three dimensions: laterally, longitudinally, and / or vertically. This allows the three-dimensional moving mechanism to bring the clamp closer to the end cap tray, where the clamp holds the end cap. The three-dimensional moving mechanism then brings the clamp closer to the housing 10 and aligns it with an opening on the housing 10. The clamp releases its grip on the end cap, assembling the end cap into the opening of the housing 10. Afterward, the three-dimensional moving mechanism drives the clamp to reset. The clamp can grip the end cap using various methods such as claw gripping or vacuum suction.

[0082] In some embodiments, such as Figure 1 , Figure 15 , Figure 16 , Figure 17 and Figure 18As shown, the airtightness testing device 600 includes a testing platform 610 and a product handling device 620. The testing platform 610 is equipped with several airtightness testing components 630. In this embodiment, airtightness testing can be performed on assembled filter element products. During airtightness testing, the product handling device 620 first picks up the product to be tested from the outer casing conveying device 200. At this time, the product to be tested is the finished filter element. The product handling device 620 then places the product to be tested on the airtightness testing components 630 and aligns the product to be tested with the airtightness testing components 630. The airtightness testing components 630 perform airtightness testing on the product to be tested that is aligned with them. After the product to be tested completes the test, the product handling device 620 removes the product from the airtightness testing components 630. Thus, this embodiment can automate the processes of product loading, product airtightness testing, and product unloading.

[0083] In this embodiment, both the product handling device 620 and the airtightness detection component 630 can be connected to the control module. The control module can send corresponding instructions to the product handling device 620 and the airtightness detection component 630 according to a preset control program, so that the product handling device 620 and the airtightness detection component 630 can coordinate with each other.

[0084] In some embodiments, the airtightness testing component 630 includes a testing plate 631 and a testing air path integration 632. The product to be tested has several fluid inlets and fluid outlets, such as a water inlet, a pure water outlet, a clean water outlet, and a wastewater outlet. Fluid enters the product to be tested through the fluid inlets and flows out of the product to be tested through the fluid outlets. The top surface of the testing plate 631 is provided with a plurality of air holes 633, which are respectively adapted to the fluid inlets and fluid outlets of the product to be tested. Specifically, the number, position, and size of the air holes 633 are adapted to the number, position, and size of the corresponding fluid inlets and fluid outlets. The testing air path integration 632 is connected to the testing plate 631 and communicates with the air holes 633.

[0085] During airtightness testing, the product handling device 620 connects the fluid inlet and fluid outlet of the product under test to the corresponding air vents 633. The detection gas path integration 632 introduces gas into the product under test through the air vents 633, and then determines the airtightness of the product under test by detecting the gas pressure or gas flow rate. Since the detection gas path integration 632 is existing technology, its specific structure and principle will not be described in this embodiment.

[0086] In this embodiment, the detection gas path integration 632 can be fixed below the detection plate 631 to avoid being exposed and occupying the space of the detection stage 610, and to facilitate the connection between the detection gas path integration 632 and the gas hole 633.

[0087] Furthermore, the top surface of the testing plate 631 is provided with a positioning groove 634, and air holes 633 are provided on the bottom wall of the positioning groove 634. During airtightness testing, the product handling device 620 inserts the product to be tested into the positioning groove 634. On the one hand, this positions the product to be tested, ensuring that the fluid inlet and fluid outlet of the product to be tested can accurately align with the corresponding air holes 633. On the other hand, the side wall of the positioning groove 634 can limit the product to be tested, making it less prone to shaking and allowing it to be stably placed on the testing plate 631.

[0088] In some embodiments, such as Figure 15 and Figure 18 As shown, the product handling device 620 includes a multi-axis robotic arm 621 and a product gripper 622 connected to the multi-axis robotic arm 621. The product gripper 622 can grip or release the product to be inspected. The multi-axis robotic arm 621 can drive the product gripper 622 to move in multiple dimensions, thereby driving the product to be inspected held by the product gripper 622 to move in multiple dimensions, and thus transporting the product to be inspected. Because the multi-axis robotic arm 621 has more flexible and versatile movements, it can adapt to different working environments.

[0089] Furthermore, the product clamp 622 includes two grippers 623 that can move closer to or further away from each other. The two grippers 623 are connected to corresponding drive mechanisms. The drive mechanisms can drive the two grippers 623 closer together to clamp the product to be inspected, or drive the two grippers 623 further apart to release the product to be inspected. The opposing surfaces (the sides that move closer together) of the two grippers 623 are each provided with an inner groove 624 that is adapted to the product to be inspected. When clamping the product to be inspected, a portion of the product is embedded in the inner groove 624, thus making the clamping of the product to be inspected more stable.

[0090] In this embodiment, multiple airtightness testing components 630 can be neatly arranged on the testing table 610, and multiple product fixtures 622 can also be neatly arranged accordingly. In this way, multiple products to be inspected can be transported at one time, and airtightness testing can be performed on multiple products to be inspected at the same time, so as to increase the number of tests and further improve production efficiency.

[0091] In some embodiments, such as Figure 15 and Figure 16As shown, the testing platform 610 is also equipped with a clamping component 640 located above the airtightness testing component 630. After the product handling device 620 places the product to be tested on the airtightness testing component 630, the clamping component 640 can press the product downwards, tightly pressing it against the airtightness testing component 630 to prevent air leakage at the connection points between the fluid inlet and fluid outlet of the product and the corresponding air holes 633. After the airtightness test of the product is completed, the clamping component 640 no longer presses the product, allowing the product handling device 620 to remove the product from the airtightness testing component 630. Therefore, this embodiment can avoid false detections caused by air leakage, effectively improving the accuracy of the test results.

[0092] Furthermore, the clamping assembly 640 includes a clamping bracket 641, a clamping actuator 642, and a clamping plate 643. The clamping bracket 641 is fixed on the testing table 610, and the clamping actuator 642 is fixed on the clamping bracket 641 to raise the clamping actuator 642 to a certain height, positioning it above the airtightness testing assembly 630. The clamping plate 643 is connected to the clamping actuator 642, which drives the clamping plate 643 to move vertically towards or away from the product to be inspected on the airtightness testing assembly 630, thereby clamping or releasing the product to be inspected. The clamping actuator 642 can be a cylinder.

[0093] Furthermore, a clamping guide rod 644 is provided on the clamping plate 643, and a clamping guide cylinder 645 arranged vertically is provided on the clamping bracket 641. The clamping guide rod 644 passes through the clamping guide cylinder 645 and can move vertically within the clamping guide cylinder 645. The clamping guide cylinder 645 guides the clamping guide rod 644, so that the clamping plate 643 can move stably vertically, thereby ensuring that the clamping plate 643 can be stably pressed onto the product to be inspected.

[0094] In some embodiments, the airtightness testing device 600 further includes a qualified product unloading assembly 651 and a non-qualified product unloading assembly 652. The product handling device 620 places products with qualified test results into the qualified product unloading assembly 651 and products with non-qualified test results into the non-qualified product unloading assembly 652. This allows for the classification of qualified and non-qualified products and avoids confusion. The qualified product unloading assembly 651 may include a conveyor belt, and the non-qualified product unloading assembly 652 may include an inclined unloading plate and a receiving box that docks with the unloading plate.

[0095] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the invention. Therefore, those skilled in the art will understand that the foregoing description of various embodiments of the invention is illustrative only and not intended to limit the invention as defined by the appended claims and their equivalents.

Claims

1. A filter cartridge assembly system, characterized in that: The system includes a housing conveying device for conveying the housing, and a sealing ring assembly device, a cover plate spin-welding and spring assembly device, a plug assembly and marking device, an inner core assembly and end cap spin-welding device, and an airtightness testing device arranged sequentially along the conveying direction of the housing. The sealing ring assembly device is used to assemble the sealing ring into the inlet and outlet of the housing. The cover plate spin-welding and spring assembly device is used to fix the cover plate on the end face of the housing and assemble the spring into the inlet and outlet of the housing. The plug assembly and marking device is used to assemble the plug into the inlet and outlet of the housing and perform laser marking on the surface of the housing. The inner core assembly and end cap spin-welding device is used to assemble the inner core into the housing and seal the end cap on the opening at the bottom of the housing to produce a finished filter element. The airtightness testing device is used to test the airtightness of the finished filter element. The sealing ring assembly device includes a sealing ring clamping assembly and a sealing ring unloading assembly. The sealing ring unloading assembly can move vertically relative to the sealing ring clamping assembly to detach the sealing ring from the sealing ring clamping assembly. The cover plate spin welding and spring assembly device includes a spring supply assembly, which includes a spring supply mechanism, a material dropping seat, a switching mechanism, and a receiving tray mechanism. The bottom surface of the material dropping seat is provided with a material dropping through hole. The receiving tray mechanism includes a rotatable receiving tray, the top surface of which is provided with multiple material receiving holes. The material receiving holes of the receiving tray can be rotated to be below the material dropping seat so that the material receiving holes align with the material dropping through holes, and can also be rotated out from below the material dropping seat. The switching mechanism is provided on the material dropping seat and can control the material dropping through holes to open or close, so as to control the single spring falling into the receiving hole each time. The plug assembly and marking device includes a plug supply component, a plug assembly component, an auxiliary positioning component, and a laser marking component. The shell conveying device includes a first conveying component, a flipping conveying component, and a second conveying component. The plug supply component is used to supply plugs. The plug assembly component is used to assemble the plugs onto the shells conveyed by the first conveying component. The first conveying component is used to convey the shells with the plugs assembled to the flipping conveying component. The flipping conveying component is used to flip the shells so that their bottoms face up and convey the flipped shells to the second conveying component. The auxiliary positioning component is used to press and position the shells conveyed by the second conveying component. The laser marking component is used to perform laser marking on the surface of the shells pressed and positioned by the auxiliary positioning component. The flipping conveying assembly includes a conveying base plate, a base plate rotation mechanism connected to the conveying base plate, a flipping lifting mechanism, a flipping drive mechanism connected to the flipping lifting mechanism, and a flipping clamp connected to the flipping drive mechanism. Both ends of the conveying base plate are provided with shell slots for placing shells. The base plate rotation mechanism is used to drive the conveying base plate to rotate. The flipping lifting mechanism is used to drive the flipping drive mechanism to move in the vertical direction. The flipping drive mechanism is used to drive the flipping clamp to rotate. The flipping clamp is used to clamp the shell or release the shell.

2. The filter element assembly system according to claim 1, characterized in that: The sealing ring clamping assembly includes a picking rod extending in a vertical direction, and the sealing ring unloading assembly includes a unloading sleeve sleeved on the outside of the picking rod; the unloading sleeve can move downward relative to the picking rod so that the sealing ring is disengaged from the picking rod.

3. The filter element assembly system according to claim 1, characterized in that: The inner core assembly and end cap spin-welding device includes an inner core feeding assembly, an inner core assembly assembly, an end cap supply assembly, an end cap assembly assembly, and an end cap spin-welding assembly. The inner core feeding assembly is used to feed the inner core to the inner core assembly assembly, the inner core assembly assembly is used to assemble the inner core into the outer shell, the end cap supply assembly is used to supply the end cap to the end cap assembly assembly, the end cap assembly assembly is used to assemble the end cap into the opening of the outer shell, and the end cap spin-welding assembly is used to spin-weld and fix the end cap.

4. The filter element assembly system according to claim 1, characterized in that: The airtightness testing device includes a testing platform and a product handling device. The testing platform is equipped with several airtightness testing components. The product handling device is used to place the product to be tested on the airtightness testing components and connect the product to the airtightness testing components. The airtightness testing components are used to perform airtightness testing on the product to be tested connected to them. The product handling device is also used to remove the product that has completed the airtightness testing from the airtightness testing components.

5. The filter element assembly system according to claim 4, characterized in that: The airtightness testing component includes a testing plate and a testing gas path integration. The top surface of the testing plate is provided with multiple air holes that are adapted to the fluid inlet and fluid outlet of the product to be tested. The testing gas path integration is connected to the testing plate and communicates with the air holes.

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