Assembly helium detection device for liquid storage tank of automobile air conditioner

Abstract

The invention discloses an assembly helium detection device for a liquid storage tank of an automobile air conditioner, which is applied to the technical field of manufacturing of the liquid storage tank of the automobile air conditioner. A tank body cleaning assembly, a drying agent filling assembly, a filter screen discharging assembly, a filter screen press-fitting assembly, a safety valve press-fitting assembly and a liquid storage tank vacuum helium suction detection device are sequentially arranged in the conveying direction of the double-layer conveying line. The two ends, in the conveying direction, of the double-layer conveying line are fixedly connected with material disc lifting assemblies used for achieving material disc conveying. The automatic assembling device has the technical effects that the automation degree of the assembling process of the liquid storage tank of the automobile air conditioner is improved, the assembling effect is improved, and the assembling cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile air-conditioning liquid storage tank manufacturing, in particular to an assembly helium detection device for automobile air-conditioning liquid storage tanks. Background Art

[0002] As a key component of the automotive air-conditioning system, the automotive air-conditioning liquid storage tank's main function is to store, filter and dry refrigerant, playing an important role in maintaining the stable operation of the automotive air-conditioning system. With the vigorous development of the automotive industry, the production scale of automotive parts has continued to expand, and higher requirements have been placed on the assembly efficiency and quality of automotive air-conditioning liquid storage tanks. Currently, the assembly process of automotive air conditioning fluid storage tanks relies primarily on manual labor. During assembly, workers must manually place desiccant and filter discs inside the tank, and manually position, connect, seal, and inspect the various tank components. This manual assembly method has numerous drawbacks: First, manual operation is inefficient, making it difficult to meet the demands of large-scale production and severely restricting production capacity expansion. Second, manual assembly is prone to problems such as component misalignment and poor sealing, which can lead to tank leakage, unstable performance, and other failures, increasing product rejection rates and after-sales repair costs. Therefore, improving the automation level of the automotive air conditioning fluid storage tank assembly process has become a pressing technical challenge. Summary of the Invention

[0003] The purpose of the present invention is to provide an assembly helium inspection device for automobile air-conditioning liquid storage tanks, which has the advantages of improving the degree of automation of the automobile air-conditioning liquid storage tank assembly process, improving the assembly effect, and reducing the assembly cost.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: an assembly helium detection device for an automobile air-conditioning liquid storage tank, comprising a double-layer conveyor line; along the conveying direction of the double-layer conveyor line, a tank cleaning component, a desiccant filling component, a filter discharge component, a filter press-fitting component, a safety valve press-fitting component and a liquid storage tank vacuum helium absorption detection device are sequentially arranged; the two ends of the double-layer conveyor line along the conveying direction are fixedly connected with a tray lifting component for realizing tray conveying.

[0005] The present invention is further configured as follows: the tank cleaning assembly, the desiccant filling assembly, the filter screen press-fitting assembly and the safety valve press-fitting assembly are all provided with a positioning clamping assembly for clamping and fixing the tank body, the positioning clamping assembly includes a fixed mounting seat and a synchronous positioning clamping cylinder fixedly connected to the mounting seat along the horizontal direction, the clamping end of the synchronous positioning clamping cylinder is symmetrically fixedly connected with a positioning clamping block, and the positioning clamping block is provided with a positioning clamping groove that matches the outer shape of the tank body.

[0006] The present invention is further configured as follows: the tank cleaning assembly includes a cleaning seat and a downward-pressing cleaning cylinder fixedly connected to the cleaning seat along the vertical direction, the telescopic end of the downward-pressing cleaning cylinder is fixedly connected to a cleaning brush head, the filter screen press-fitting assembly includes a first press-fitting seat and a first press-fitting cylinder fixedly connected to the first press-fitting seat along the vertical direction, the telescopic end of the first press-fitting cylinder is fixedly connected to a press-fitting plate that extends into the tank body and presses the filter screen to the bottom of the tank body, the safety valve press-fitting assembly includes a second press-fitting seat and a second press-fitting cylinder fixedly connected to the second press-fitting seat along the vertical direction, the telescopic end of the second press-fitting cylinder is fixedly connected to a press-fitting block for press-fitting the installation valve to the tank body.

[0007] The present invention is further configured as follows: the desiccant filling assembly includes a fixedly arranged filling seat and a storage barrel fixedly connected to the top of the filling seat for storing desiccant, the bottom of the storage barrel is fixedly connected to a discharge pipe, the filling seat is fixedly connected to a screw seat arranged in a vertical direction at the bottom of the storage barrel and a screw lifting shaft rotatably connected to the screw seat along the vertical direction, the screw seat is slidably connected to a lifting adjustment seat in the vertical direction, the bottom of the screw lifting shaft is fixedly connected to a rotating handle that drives the screw lifting shaft to rotate so as to adjust the height of the lifting adjustment seat, the lifting adjustment seat is movably connected to a lifting mounting seat in the vertical direction based on the unloading lifting cylinder, the lifting mounting seat is fixedly connected to a connecting pipe connecting the discharge pipe and the tank body, and a rotating closing plate is rotatably connected in the connecting pipe based on a torsion spring.

[0008] The present invention is further configured such that the filter screen discharge assembly includes a discharge seat and a filter screen vibrating feeding line and a gasket vibrating feeding line respectively fixedly connected to the discharge seat for feeding the filter screen and the gasket. The filter seat is also fixedly connected to a plurality of filter disc storage assemblies for storing filter discs. The filter seat is provided with a gripping assembly based on a robotic arm for respectively grabbing the filter discs, the filter screen, and the gasket and sequentially placing them into the cylinder.

[0009] The present invention is further configured as follows: the filter disc storage assembly includes a horizontal storage seat fixedly connected to the discharge seat along the horizontal direction and several storage racks fixedly connected to the horizontal storage seat along the circumferential direction, the several storage racks forming a storage cavity for storing filter discs, the top of the storage rack is fixedly connected with a positioning and picking plate along the horizontal direction, the positioning and picking plate is provided with a material blocking groove, the horizontal storage seat is also fixedly connected with several vertical sliding rods along the circumferential direction, the vertical sliding rods are slidably connected with a vertical sliding block in the vertical direction, the top of the vertical sliding block is fixedly connected with a lifting plate movably connected to the storage rack along the vertical direction, and a lifting spring is fixedly connected between the lifting plate and the horizontal storage seat.

[0010] The present invention is further configured as follows: the clamping assembly includes a rotating mounting disk rotatably connected to the robotic arm and two clamping cylinders fixedly connected to the rotating mounting disk, the clamping ends of the clamping cylinders are respectively fixedly connected to clamping blocks for clamping the filter screen and the gasket, and the rotating mounting disk is also fixedly connected to a negative pressure adsorption seat for adsorbing the filter disc.

[0011] The present invention is further configured as follows: the liquid storage tank vacuum helium absorption detection device includes a fixed detection seat and a lower vacuum seat fixedly connected to the detection seat; the detection seat is movably connected to an upper vacuum seat that cooperates with the lower vacuum seat on the top of the lower vacuum seat based on a vacuum lifting cylinder in a vertical direction; a vacuum chamber is formed between the upper vacuum seat and the lower vacuum seat; a plurality of vacuum suction ports are provided on the lower vacuum seat; an inflation tube for flushing helium into the vacuum chamber is fixedly connected to the top of the upper vacuum seat; a plurality of conveying roller assemblies are rotatably connected in the vacuum chamber; a pushing assembly for conveying a material tray carrying the automobile air-conditioning liquid storage tank to the conveying roller assembly is movably connected to the double-layer conveying line.

[0012] The present invention is further configured as follows: the conveying roller assembly includes a conveying seat symmetrically fixedly connected to the lower vacuum seat along the material tray conveying direction and a number of material tray conveying rollers rotatably connected to the conveying seat, the ends of the several material tray conveying rollers are coaxially fixedly connected with mutually meshing driving gears, the lower vacuum seat is fixedly connected with a driving motor that drives the driving gear to rotate, and the pushing assembly includes a sliding seat slidably connected to the double-layer conveying line and a pushing belt conveyor line symmetrically arranged at both ends of the sliding seat along the pushing direction.

[0013] The present invention is further configured as follows: the tray lifting assembly includes a tray lifting seat and a lifting slide rail symmetrically fixedly connected to the tray lifting seat along the vertical direction; a tray lifting plate is slidably connected to the lifting slide rail along the vertical direction; and a tray lifting cylinder is fixedly connected to the tray lifting seat for driving the tray lifting plate to rise and fall.

[0014] In summary, the present invention has the following beneficial effects: 1. The tank cleaning assembly, desiccant filling assembly, filter discharge assembly, filter press-fit assembly, safety valve press-fit assembly and liquid storage tank vacuum helium absorption detection device are integrated through the double-layer conveyor line. The tank cleaning assembly drives the cleaning brush head by pressing the cleaning cylinder to automatically clean the inner wall of the tank. The desiccant filling assembly drives the lifting mounting seat and the connecting pipe to descend through the unloading lifting cylinder, so that the liquid outlet pipe in the center of the tank lifts the rotating closing plate to make the desiccant in the storage barrel automatically filled into the tank through the connecting pipe. The height of the lifting adjustment seat can be changed by rotating the handle to adjust the screw lifting shaft to adapt to different tanks. When the filter is discharged, the filter vibration feeding line and the gasket vibration feeding line feed in order, and the lifting spring in the filter storage assembly pushes The filter moves to the positioning and picking plate, and the robotic arm drives the clamping assembly to grab the filter, filter screen and gasket respectively and put them into the tank body. When the filter screen and the safety valve are pressed, the first pressing cylinder drives the pressing plate to press the filter screen to the bottom of the tank body, and the second pressing cylinder drives the pressing block to fix the safety valve, thereby realizing the automatic pressing of the filter screen and the installation valve. During testing, the pushing assembly sends the material tray into the vacuum chamber, and the upper vacuum seat and the lower vacuum seat are closed to form a vacuum chamber. After vacuuming, helium is filled in, and the sealing of the air-conditioning storage tank is tested by the negative pressure method, thereby realizing the automation of the entire process from tank cleaning, component assembly to helium inspection, reducing labor costs and quality risks, improving the degree of automation in the assembly process of automobile air-conditioning storage tanks and reducing assembly costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of this embodiment; Figure 2 Schematic diagram of the structure of the tank cleaning assembly and the positioning and clamping assembly of this embodiment; Figure 3 Schematic diagram of the structure of the desiccant filling assembly of this embodiment; Figure 4 Schematic diagram of the structure of the filter screen discharge assembly of this embodiment; Figure 5 yes Figure 4 A magnified schematic diagram of part A; Figure 6 1 is a schematic structural diagram of the filter sheet storage assembly of this embodiment; Figure 7 1 is a schematic structural diagram of the filter press-fit assembly and the safety valve press-fit assembly of this embodiment; Figure 8 2 is a schematic structural diagram of a liquid storage tank vacuum helium absorption detection device according to the present embodiment; Figure 9 This is a schematic structural diagram of the lower vacuum seat and the upper vacuum seat in the assembled state of this embodiment; Figure 10 2 is a schematic structural diagram of the conveyor roller assembly of this embodiment; Figure 11 2 is a schematic structural diagram of the pusher assembly of this embodiment; Figure 12 It is a structural schematic diagram of the material tray lifting assembly of this embodiment.

[0016] Figure numerals: 1, double-layer conveyor line; 2, tank cleaning assembly; 21, cleaning seat; 22, downward pressure cleaning cylinder; 23, cleaning brush head; 3, desiccant filling assembly; 31, filling seat; 32, storage barrel; 33, discharge pipe; 34, screw seat; 35, screw lifting shaft; 36, lifting adjustment seat; 37, rotating handle; 38, unloading lifting cylinder; 39, lifting mounting seat; 310, connecting pipe; 4, filter discharge assembly; 41, discharge seat ; 42. Filter screen vibration feeding line; 43. Gasket vibration feeding line; 44. Filter sheet storage assembly; 441. Horizontal storage seat; 442. Storage rack; 443. Positioning and picking plate; 444. Stopper trough; 445. Vertical slide bar; 446. Vertical slide block; 447. Lifting plate; 448. Lifting spring; 45. Robotic arm; 46. Clamping assembly; 461. Rotating mounting plate; 462. Clamping cylinder; 463. Clamping block; 4 64. Negative pressure adsorption seat; 5. Filter screen press-fit assembly; 51. First press-fit seat; 52. First press-fit cylinder; 53. Press-fit plate; 6. Safety valve press-fit assembly; 61. Second press-fit seat; 62. Second press-fit cylinder; 63. Press-fit block; 7. Vacuum helium absorption detection device for liquid storage tank; 71. Detection seat; 72. Lower vacuum seat; 73. Vacuum lifting cylinder; 74. Upper vacuum seat; 75. Vacuum suction port; 76. Inflatable tube; 77. Conveyor roller assembly; 7 71. Conveyor seat; 772. Tray conveyor roller; 773. Drive gear; 774. Drive motor; 78. Pusher assembly; 781. Slide seat; 782. Pusher belt conveyor line; 8. Tray lifting assembly; 81. Tray lifting seat; 82. Lifting slide rail; 83. Tray lifting plate; 84. Tray lifting cylinder; 9. Positioning clamping assembly; 91. Mounting seat; 92. Synchronous positioning clamping cylinder; 93. Positioning clamping block; 94. Positioning clamping groove. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Example: refer to Figures 1 to 12A helium detection device for assembling an automobile air-conditioning liquid storage tank comprises a double-layer conveyor line 1. The tank body of the air-conditioning liquid storage tank is conveyed on the double-layer conveyor line 1 based on a positioning tray. Along the conveying direction of the double-layer conveyor line 1, a tank cleaning component 2, a desiccant filling component 3, a filter screen discharge component 4, a filter screen pressing component 5, a safety valve pressing component 6 and a liquid storage tank vacuum helium absorption detection device 7 are sequentially arranged. A tray lifting component 8 for realizing tray conveying is fixedly connected to both ends of the double-layer conveyor line 1 along the conveying direction.

[0019] refer to Figure 2 Specifically, the tank cleaning assembly 2, the desiccant filling assembly 3, the filter press-fitting assembly 5 and the safety valve press-fitting assembly 6 are all provided with a positioning clamping assembly 9 for clamping and fixing the tank body. The positioning clamping assembly 9 includes a fixed mounting seat 91 and a synchronous positioning clamping cylinder 92 fixedly connected to the mounting seat 91 along the horizontal direction. A positioning clamping block 93 is symmetrically fixedly connected to the clamping end of the synchronous positioning clamping cylinder 92. A positioning clamping groove 94 that matches the shape of the tank body is provided on the positioning clamping block 93. The synchronous positioning clamping cylinder 92 drives the positioning clamping block 93 to synchronously clamp, thereby realizing the positioning and fixation of the tank body.

[0020] refer to Figure 2 and Figure 7 Specifically, the tank cleaning assembly 2 includes a cleaning seat 21 and a downward-pressing cleaning cylinder 22 fixedly connected to the cleaning seat 21 in a vertical direction. A cleaning brush head 23 is fixedly connected to the telescopic end of the downward-pressing cleaning cylinder 22. The cleaning brush head 23 is driven by the downward-pressing cleaning cylinder 22 to automatically clean the inner wall of the tank. The filter screen pressing assembly 5 includes a first pressing seat 51 and a first pressing cylinder 52 fixedly connected to the first pressing seat 51 in a vertical direction. The telescopic end of the first pressing cylinder 52 is fixedly connected and extends into the tank body to press the filter screen. The press-fitting plate 53 is installed to the bottom of the tank body, and the safety valve press-fitting assembly 6 includes a second press-fitting seat 61 and a second press-fitting cylinder 62 fixedly connected to the second press-fitting seat 61 along the vertical direction. The telescopic end of the second press-fitting cylinder 62 is fixedly connected to a press-fitting block 63 for press-fitting the installation valve to the tank body. When the filter screen and the safety valve are press-fitted, the first press-fitting cylinder 52 drives the press-fitting plate 53 to press the filter screen to the bottom of the tank body, and the second press-fitting cylinder 62 drives the press-fitting block 63 to fix the safety valve, thereby realizing automatic press-fitting of the filter screen and the installation valve.

[0021] refer to Figure 3Specifically, the desiccant filling assembly 3 includes a fixed filling seat 31 and a storage barrel 32 fixedly connected to the top of the filling seat 31 for storing desiccant, a discharge pipe 33 fixedly connected to the bottom of the storage barrel 32, a screw seat 34 set in the vertical direction and a screw lifting shaft 35 rotatably connected to the screw seat 34 along the vertical direction are fixedly connected to the filling seat 31 and the bottom of the storage barrel 32, a lifting adjustment seat 36 is slidably connected to the screw seat 34 in the vertical direction, and a rotating handle 37 is fixedly connected to the bottom of the screw lifting shaft 35 to drive the screw lifting shaft 35 to rotate so as to adjust the height of the lifting adjustment seat 36, and the lifting adjustment seat 36 is movable in the vertical direction based on the unloading lifting cylinder 38. It is dynamically connected with a lifting mounting seat 39, and a connecting pipe 310 connecting the discharge pipe 33 and the tank body is fixedly connected to the lifting mounting seat 39. A rotating closing plate is connected to the connecting pipe 310 based on the rotation of a torsion spring (common knowledge in this field, not shown in the drawings). The desiccant filling component 3 drives the lifting mounting seat 39 and the connecting pipe 310 to descend through the unloading lifting cylinder 38 so that the liquid discharge pipe in the center of the tank body lifts the rotating closing plate so that the desiccant in the storage barrel 32 is automatically filled into the tank body through the connecting pipe 310, and the height of the lifting adjustment seat 36 is changed by rotating the handle 37 to adapt to different tank bodies. The liquid discharge pipe in the center of the tank body is directly welded to the center of the tank body to realize the transportation of refrigerant.

[0022] refer to Figures 4 to 6 Specifically, the filter screen discharging assembly 4 includes a discharging seat 41 and a filter screen vibration feeding line 42 and a gasket vibration feeding line 43 which are respectively fixedly connected to the discharging seat 41 for realizing the feeding of the filter screen and the gasket. A number of filter disc storage assemblies 44 for storing filter discs are also fixedly connected to the filter seat. A clamping assembly 46 for grabbing the filter disc, the filter screen and the gasket respectively and placing them into the cylinder body in sequence is provided on the filter seat based on a mechanical arm 45. When the filter screen is discharged, the filter screen vibration feeding line 42 and the gasket vibration feeding line 43 feed in order, and the lifting spring 448 in the filter disc storage assembly 44 pushes the filter disc to the positioning and feeding plate 443. The mechanical arm 45 drives the clamping assembly 46 to grab the filter disc, the filter screen and the gasket respectively and place them into the tank body in sequence to realize automatic discharging.

[0023] refer to Figures 4 to 6Specifically, the filter disc storage assembly 44 includes a horizontal storage seat 441 fixedly connected to the discharge seat 41 along the horizontal direction and a plurality of storage racks 442 fixedly connected to the horizontal storage seat 441 along the circumferential direction. The plurality of storage racks 442 form a storage cavity for storing filter discs. The filter discs are stacked in the storage cavity along the vertical direction. A positioning and taking plate 443 is fixedly connected to the top of the storage rack 442 along the horizontal direction. A material blocking groove 444 is provided on the positioning and taking plate 443. The size is smaller than that of the filter disc to prevent the filter disc from overflowing from the storage chamber. When the negative pressure adsorption seat 464 extends into the blocking groove 444 and adsorbs the uppermost filter disc, the filter disc is lifted by the negative pressure adsorption seat 464, thereby deforming the filter disc and taking the filter disc out of the storage chamber. A plurality of vertical slide rods 445 are fixedly connected to the horizontal storage seat 441 along the circumferential direction. A vertical slide block 446 is slidably connected to the vertical slide rod 445 in the vertical direction. The top of the vertical slide block 446 is fixedly connected to the There is a lifting plate 447 movably connected to the storage rack 442 in the vertical direction, and a lifting spring 448 is fixedly connected between the lifting plate 447 and the horizontal storage seat 441. The lifting spring 448 lifts the lifting plate 447 so that the top filter is always in contact with the back of the positioning and picking plate 443. The clamping assembly 46 includes a rotating mounting plate 461 rotatably connected to the mechanical arm 45 and two clamping cylinders 462 fixedly connected to the rotating mounting plate 461. The clamping cylinders 462 are used to clamp the filter. The clamping ends of the cylinder 462 are fixedly connected with clamping blocks 463 for clamping the filter screen and the gasket. The clamping cylinder 462 drives the clamping block 463 to move, thereby clamping the filter screen and the gasket. A negative pressure adsorption seat 464 for adsorbing the filter disc is also fixedly connected to the rotating mounting disk 461. The shape of the material blocking groove 444 is the same as that of the negative pressure adsorption seat 464, so that the negative pressure adsorption seat 464 can suck out the filter disc at the top of the storage chamber through the material blocking groove 444, thereby completing the removal of the filter disc.

[0024] refer to Figures 7 to 11Specifically, the liquid storage tank vacuum helium absorption detection device 7 includes a fixed detection seat 71 and a lower vacuum seat 72 fixedly connected to the detection seat 71. The detection seat 71 is movably connected to an upper vacuum seat 74 that cooperates with the lower vacuum seat 72 on the top of the lower vacuum seat 72 based on a vacuum lifting cylinder 73 in the vertical direction. A vacuum cavity is formed between the upper vacuum seat 74 and the lower vacuum seat 72. A plurality of vacuum suction ports 75 are opened on the lower vacuum seat 72. An inflation tube 76 for injecting helium into the vacuum cavity is fixedly connected to the top of the upper vacuum seat 74. During the detection, the material is pushed Component 78 sends the material tray into the vacuum chamber, and the upper vacuum seat 74 and the lower vacuum seat 72 are closed to form a vacuum chamber. The vacuum chamber is evacuated outwards through the vacuum suction port 75 to complete the evacuation of the vacuum chamber. Helium is filled into the vacuum chamber through the inflation tube 76. Since the helium molecules are small, they can enter the air conditioning storage tank through the gap, thereby realizing the sealing of the air conditioning storage tank by the negative pressure method. The negative pressure method detection method is well known to those skilled in the art and will not be described here. Several conveying roller components 77 are rotatably connected in the vacuum chamber, which are movable on the double-layer conveyor line 1. The pusher assembly 78 is connected to the conveyor roller assembly 77 for conveying the material tray containing the automobile air-conditioning liquid storage tank. The conveyor roller assembly 77 includes a conveyor seat 771 symmetrically fixedly connected to the lower vacuum seat 72 along the conveying direction of the material tray and a plurality of material tray conveying rollers 772 rotatably connected to the conveyor seat 771. The ends of the plurality of material tray conveying rollers 772 are fixedly connected to the same axis with mutually meshing drive gears 773. The lower vacuum seat 72 is fixedly connected to a drive motor 774 that drives the drive gear 773 to rotate. When the pusher assembly 78 delivers the material tray into the lower vacuum seat 72, The driving motor 774 drives the driving gear 773 to rotate so that several material tray conveying rollers 772 rotate synchronously so that the material tray carrying the air-conditioning liquid storage tank is sent into the vacuum chamber. When the inspection is completed, the driving motor 774 reverses to push the material tray into the pushing assembly 78 located on the double-layer conveyor line 1. The pushing assembly 78 includes a sliding seat 781 slidingly connected to the double-layer conveyor line 1 and a pushing belt conveyor line 782 symmetrically arranged at both ends of the sliding seat 781 along the pushing direction. The material tray is sent into the conveying roller assembly 77 through the pushing belt conveyor line 782.

[0025] refer to Figure 12 Specifically, the tray lifting assembly 8 includes a tray lifting seat 81 and a lifting slide rail 82 symmetrically fixedly connected to the tray lifting seat 81 along the vertical direction. The lifting slide rail 82 is slidably connected to the tray lifting plate 83 in the vertical direction. The tray lifting seat 81 is fixedly connected with a tray lifting cylinder 84 for driving the tray lifting plate 83 to rise and fall. The tray lifting cylinder 84 drives the tray lifting plate 83 to rise and fall, thereby realizing reciprocating transportation of the tray on the double-layer conveyor line 1.

[0026] Brief description of the usage process: The tank cleaning component 2 drives the cleaning brush head 23 by pressing down the cleaning cylinder 22 to automatically clean the inner wall of the tank. The desiccant filling component 3 drives the lifting mounting seat 39 and the connecting pipe 310 to descend through the unloading lifting cylinder 38, so that the liquid outlet pipe in the center of the tank lifts the rotating closing plate to make the desiccant in the storage barrel 32 automatically filled into the tank through the connecting pipe 310. The screw lifting shaft 35 is adjusted by rotating the handle 37 to change the height of the lifting adjustment seat 36 to adapt to different tanks. When the filter is discharged, the filter vibration feeding line 42 and the gasket vibration feeding line 43 feed in order, and the lifting spring 448 in the filter storage assembly 44 pushes The filter moves to the positioning and picking plate 443, and the robotic arm 45 drives the clamping assembly 46 to grab the filter, filter screen and gasket respectively and put them into the tank body. When the filter screen and the safety valve are pressed, the first pressing cylinder 52 drives the pressing plate 53 to press the filter screen to the bottom of the tank body, and the second pressing cylinder 62 drives the pressing block 63 to fix the safety valve, thereby realizing automatic pressing of the filter screen and the installation valve. During testing, the pushing assembly 78 sends the material tray into the vacuum chamber, and the upper vacuum seat 74 and the lower vacuum seat 72 are closed to form a vacuum chamber. After vacuuming, helium is filled in, and the sealing of the air-conditioning storage tank is tested by the negative pressure method, thereby realizing the automation of the entire process from tank cleaning, component assembly to helium testing.

[0027] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make creative modifications to this embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An assembly helium inspection device for automobile air-conditioning liquid storage tanks, comprising a double-layer conveying line (1); characterized in that: A tank cleaning assembly (2), a desiccant filling assembly (3), a filter screen discharge assembly (4), a filter screen press-fit assembly (5), a safety valve press-fit assembly (6), and a liquid storage tank vacuum helium absorption detection device (7) are sequentially arranged along the conveying direction of the double-layer conveying line (1). A material tray lifting assembly (8) for realizing material tray conveying is fixedly connected to both ends of the double-layer conveying line (1) along the conveying direction.

2. The helium inspection device for the assembly of an automobile air-conditioning liquid storage tank according to claim 1, characterized in that: The tank cleaning assembly (2), the desiccant filling assembly (3), the filter screen pressing assembly (5) and the safety valve pressing assembly (6) are all provided with a positioning clamping assembly (9) for clamping and fixing the tank. The positioning clamping assembly (9) comprises a fixed mounting seat (91) and a synchronous positioning clamping cylinder (92) fixedly connected to the mounting seat (91) along a horizontal direction. The clamping end of the synchronous positioning clamping cylinder (92) is symmetrically fixedly connected to a positioning clamping block (93). The positioning clamping block (93) is provided with a positioning clamping groove (94) that matches the outer shape of the tank.

3. The helium inspection device for the assembly of an automobile air-conditioning liquid storage tank according to claim 2, characterized in that: The tank cleaning assembly (2) comprises a cleaning seat (21) and a downward-pressing cleaning cylinder (22) fixedly connected to the cleaning seat (21) along a vertical direction, the telescopic end of the downward-pressing cleaning cylinder (22) is fixedly connected to a cleaning brush head (23), the filter screen press-fitting assembly (5) comprises a first press-fitting seat (51) and a first press-fitting cylinder (52) fixedly connected to the first press-fitting seat (51) along a vertical direction, the telescopic end of the first press-fitting cylinder (52) is fixedly connected to a press-fitting plate (53) that extends into the tank body and presses the filter screen to the bottom of the tank body, the safety valve press-fitting assembly (6) comprises a second press-fitting seat (61) and a second press-fitting cylinder (62) fixedly connected to the second press-fitting seat (61) along a vertical direction, the telescopic end of the second press-fitting cylinder (62) is fixedly connected to a press-fitting block (63) for press-fitting the installation valve to the tank body.

4. The helium inspection device for the assembly of an automobile air conditioning liquid storage tank according to claim 1, characterized in that: The desiccant filling assembly (3) comprises a fixed filling seat (31) and a storage barrel (32) fixedly connected to the top of the filling seat (31) for storing desiccant, a discharge pipe (33) fixedly connected to the bottom of the storage barrel (32), a screw seat (34) fixedly connected to the bottom of the storage barrel (32) along the vertical direction and a screw lifting shaft (35) rotatably connected to the screw seat (34) along the vertical direction, and a screw seat (34) slidably connected to the screw seat (34) along the vertical direction. A lifting adjustment seat (36) is fixedly connected to the bottom of the screw lifting shaft (35) with a rotating handle (37) that drives the screw lifting shaft (35) to rotate so as to adjust the height of the lifting adjustment seat (36). A lifting mounting seat (39) is movably connected to the lifting adjustment seat (36) along the vertical direction based on the unloading lifting cylinder (38). A connecting pipe (310) connecting the discharge pipe (33) and the tank body is fixedly connected to the lifting mounting seat (39). A rotating closing plate is rotatably connected in the connecting pipe (310) based on a torsion spring.

5. The helium inspection device for the assembly of an automobile air-conditioning liquid storage tank according to claim 1, characterized in that: The filter screen discharge assembly (4) comprises a discharge seat (41) and a filter screen vibration loading line (42) and a gasket vibration loading line (43) respectively fixedly connected to the discharge seat (41) for realizing the loading of the filter screen and the gasket. The discharge seat (41) is also fixedly connected to a plurality of filter disc storage assemblies (44) for storing filter discs. The discharge seat (41) is provided with a gripping assembly (46) based on a mechanical arm (45) for respectively grabbing the filter disc, the filter screen and the gasket and placing them into the cylinder in sequence.

6. The helium inspection device for the assembly of an automobile air-conditioning liquid storage tank according to claim 5, characterized in that: The filter disc storage assembly (44) comprises a horizontal storage seat (441) fixedly connected to the discharge seat (41) along the horizontal direction and a plurality of storage racks (442) fixedly connected to the horizontal storage seat (441) along the circumferential direction, wherein the plurality of storage racks (442) form a storage cavity for storing filter discs, and a positioning and taking plate (443) is fixedly connected to the top of the storage rack (442) along the horizontal direction, and a blocking groove (444) is provided on the positioning and taking plate (443). ), the horizontal material storage seat (441) is also fixedly connected with a plurality of vertical slide bars (445) along the circumferential direction, the vertical slide bars (445) are slidably connected with vertical sliding blocks (446) along the vertical direction, the top of the vertical sliding block (446) is fixedly connected with a lifting plate (447) movably connected to the material storage rack (442) along the vertical direction, and a lifting spring (448) is fixedly connected between the lifting plate (447) and the horizontal material storage seat (441).

7. The helium inspection device for the assembly of an automobile air-conditioning liquid storage tank according to claim 6, characterized in that: The clamping assembly (46) comprises a rotating mounting disk (461) rotatably connected to the mechanical arm (45) and two clamping cylinders (462) fixedly connected to the rotating mounting disk (461), the clamping ends of the clamping cylinders (462) being fixedly connected to clamping blocks (463) for clamping the filter screen and the gasket, respectively, and the rotating mounting disk (461) being further fixedly connected to a negative pressure adsorption seat (464) for adsorbing the filter disc.

8. The helium inspection device for the assembly of an automobile air-conditioning liquid storage tank according to claim 1, characterized in that: The liquid storage tank vacuum helium absorption detection device (7) comprises a fixed detection seat (71) and a lower vacuum seat (72) fixedly connected to the detection seat (71); the detection seat (71) is movably connected to an upper vacuum seat (74) cooperating with the lower vacuum seat (72) on the top of the lower vacuum seat (72) based on a vacuum lifting cylinder (73) along the vertical direction; a vacuum chamber is formed between the upper vacuum seat (74) and the lower vacuum seat (72); a plurality of vacuum suction ports (75) are provided on the lower vacuum seat (72); a charging tube (76) for injecting helium into the vacuum chamber is fixedly connected to the top of the upper vacuum seat (74); a plurality of conveying roller assemblies (77) are rotatably connected in the vacuum chamber; a pushing assembly (78) for conveying a material tray carrying the automobile air-conditioning liquid storage tank to the conveying roller assembly (77) is movably connected on the double-layer conveying line (1).

9. The helium inspection device for the assembly of an automobile air-conditioning liquid storage tank according to claim 8, characterized in that: The conveying roller assembly (77) includes a conveying seat (771) symmetrically fixedly connected to the lower vacuum seat (72) along the material tray conveying direction and a plurality of material tray conveying rollers (772) rotatably connected to the conveying seat (771), the ends of the plurality of material tray conveying rollers (772) are coaxially fixedly connected with mutually meshing driving gears (773), the lower vacuum seat (72) is fixedly connected with a driving motor (774) for driving the driving gear (773) to rotate, and the pushing assembly (78) includes a sliding seat (781) slidably connected to the double-layer conveying line (1) and a pushing belt conveyor line (782) symmetrically arranged at both ends of the sliding seat (781) along the pushing direction.

10. The helium inspection device for the assembly of a liquid storage tank of an automobile air conditioner according to claim 1, characterized in that: The tray lifting assembly (8) comprises a tray lifting seat (81) and a lifting slide rail (82) symmetrically fixedly connected to the tray lifting seat (81) in a vertical direction; a tray lifting plate (83) is slidably connected to the lifting slide rail (82) in a vertical direction; and a tray lifting cylinder (84) is fixedly connected to the tray lifting seat (81) for driving the tray lifting plate (83) to move up and down.

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