An automotive plastic pipeline air tightness automatic detection system

Abstract

The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection. The application discloses an automobile plastic pipeline air tightness automatic detection system and relates to the technical field of automobile part detection

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile part detection, in particular to an automobile plastic pipeline air tightness automatic detection system. BACKGROUND

[0002] Part of the automobile air conditioner has a plastic pipeline, the plastic pipeline is connected with a cooling system, in the production process, the air tightness of the plastic pipeline and the cooling system connected with the plastic pipeline needs to be detected, a tool is connected with the plastic pipeline, the plastic pipeline is sealed by the tool, the gas outside the tool enters the plastic pipeline and the cooling system connected with the plastic pipeline, and then air tightness detection is carried out.

[0003] In the production of the automobile plastic pipeline, air tightness detection is a core link for ensuring that the pipeline is leakproof and pressure-resistant. The traditional detection method has the following defects: 1. low efficiency: relying on manual operation, only a single pipeline can be detected at a time, and the clamping, sealing and detection processes are complicated; 2. insufficient accuracy: single gas detection is easily affected by the adsorption of the pipeline, and it is difficult to identify micro leakage (≤10% leakage); 3. poor adaptability: different pipe diameters need to replace the sealing tool, and the downtime for replacement reduces the production capacity; 4. resource waste: the medium is directly discarded after liquid detection, and is not recycled.

[0004] Therefore, it is necessary to design an automobile plastic pipeline air tightness automatic detection system for improving the air tightness detection effect of the plastic pipeline. SUMMARY

[0005] The application aims to provide an automobile plastic pipeline air tightness automatic detection system to solve the problems in the background art.

[0006] In order to solve the above technical problems, the application provides the following technical scheme: an automobile plastic pipeline air tightness automatic detection system, comprising a base, a detection assembly is arranged on the base, a rotating disc is arranged on the base and can rotate, three sealing assemblies one are fixedly connected to the upper side of the rotating disc, a clamping and centering assembly is arranged on the rotating disc corresponding to each of the three sealing assemblies one, and the detection assembly comprises a sealing assembly two which can be lifted.

[0007] Each of the three sealing assemblies one comprises a circular table, different-diameter annular grooves one are formed in the circular table, a sealing piece one is embedded in each of the annular grooves one, an annular groove two is formed in the upper side of the sealing piece one, annular grooves three are formed in the inner side walls of the annular groove two, two supporting rings are fixedly connected to the inner side walls of the two annular grooves three, a sticking ring is fixedly connected to the end of each supporting ring away from the annular groove three, two annular grooves four are formed in the side of the sticking ring away from the supporting ring, and a plurality of gas suction holes are formed in each annular groove four.

[0008] The sealing assembly two comprises a disc, a plurality of annular grooves five are formed in the lower side of the disc and correspond to the plurality of annular grooves one of the sealing assembly one, sealing pieces two are embedded in the annular grooves five, the sealing pieces two are the same in structure as the sealing pieces one, a detection tube is connected through the center of the disc, an input end of the detection tube is fixedly connected with an air inlet pipe and a liquid inlet pipe through a three-way valve, the air inlet pipe and the liquid inlet pipe are respectively provided with a gas flow sensor and a liquid flow sensor, and the gas flow sensor and the liquid flow sensor are signal connected with a processor.

[0009] According to the above technical scheme, the two supporting rings on the same annular groove three are arranged in an up-down manner, and a section line a of the two supporting rings on the same annular groove three and an inner wall of the annular groove three form an upward opening 30° angle C;

[0010] The section line b of the attaching ring and the section line a of the supporting ring form a downward opening 45° angle D.

[0011] According to the above technical scheme, the side of the attaching ring close to the supporting ring is provided with a ring-shaped air pipe, a gas nozzle is fixedly connected with the ring-shaped air pipe corresponding to the air hole, the gas nozzle is inserted into the air hole and is in sealing connection with the air hole, and the ring-shaped air pipe is in communication with a vacuum pump one through a pipeline.

[0012] According to the above technical scheme, a plurality of liquid outlet holes are formed in the center of the circular table, the liquid outlet holes penetrate the circular table, a collecting pipe is formed in the lower side of the rotating disc corresponding to the circular table, one end of the collecting pipe is embedded on the rotating disc and is in communication with the liquid outlet hole, and an output end of the collecting pipe is fixedly connected with an air outlet pipe and a liquid outlet pipe through a three-way valve.

[0013] According to the above technical scheme, the clamping and centering assembly comprises three clamping blocks, the three clamping blocks are uniformly distributed in a circle with the center of the circular table as the center, one sides of the three clamping blocks away from each other are provided with a hydraulic telescopic cylinder one, a fixed end of the hydraulic telescopic cylinder one is fixedly connected with a connecting plate, the connecting plate is provided with a hydraulic telescopic cylinder two, a fixed end of the hydraulic telescopic cylinder two is fixedly connected on the rotating disc, and an output end of the hydraulic telescopic cylinder two is fixedly connected with the connecting plate.

[0014] According to the above technical scheme, the detection assembly further comprises a connecting frame, three hydraulic telescopic cylinders three are fixedly connected on the side of the connecting frame away from the base, fixed ends of the three hydraulic telescopic cylinders three are fixedly connected on the connecting frame, and output ends of the three hydraulic telescopic cylinders three are fixedly connected with the sealing assembly two.

[0015] According to the above technical scheme, a pipeline of the sealing piece two in communication with the ring-shaped air pipe is in communication with a vacuum pump two through the sealing piece two and the disc.

[0016] According to the above technical scheme, the input end of the air inlet pipe is fixedly connected with an air compressor, an electric control valve one is arranged on the air inlet pipe, and the gas flow sensor is arranged on the pipeline on the output end side of the electric control valve one.

[0017] The input end of the liquid inlet pipe is fixedly connected with a liquid pump, the input end pipeline of the liquid pump is communicated with a liquid storage tank, the output end of the liquid outlet pipe is communicated to the liquid storage tank, an electric control valve two is arranged on the liquid inlet pipe, and the liquid flow sensor is arranged on the pipeline on the output end side of the electric control valve two.

[0018] According to the above technical scheme, the cam divider is arranged in the base, the output shaft of the cam divider is fixedly connected with the rotating disc, and the cam divider drives the rotating disc to perform intermittent indexing rotary motion at a fixed angle.

[0019] According to the above technical scheme, the base is provided with an incoming conveying belt and an industrial robot one on the right side, and the industrial robot one is used for clamping and placing the plastic pipeline to be detected on the incoming conveying belt on the rotating disc.

[0020] The base is provided with a waste conveying belt, a finished product conveying belt and an industrial robot two on the left side, the industrial robot two places the unqualified plastic pipeline after detection on the waste conveying belt, and the industrial robot two places the qualified plastic pipeline after detection on the finished product conveying belt.

[0021] Compared with the prior art, the present application has the following advantages: by arranging the sealing assembly one and the sealing assembly two and through gas-liquid dual mode detection, the air tightness detection quality and effect of the plastic pipeline are improved.

[0022] By arranging the rotating disc and the cam divider, intermittent rotation among multiple stations is realized, automatic feeding and discharging are realized through the industrial robot, detection and clamping are realized in parallel, and the detection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:

[0024] Figure 1 is a schematic diagram of the overall structure of the present application;

[0025] Figure 2 is a schematic diagram of the disassembly structure of the sealing assembly one of the present application;

[0026] Figure 3 is a schematic diagram of the cross-sectional structure of the sealing assembly one of the present application;

[0027] Figure 4 is a schematic diagram of the Figure 3A area local amplification structure schematic diagram of Figure 1;

[0028] Figure 5 Split structure schematic diagram of the detection assembly of the application;

[0029] Figure 6 Gas and liquid transmission line schematic diagram of the application;

[0030] In the figure: 1, rotary disc; 2, base; 3, sealing assembly one; 4, circular table; 5, annular groove one; 6, sealing piece one; 7, annular groove two; 8, annular groove three; 9, support ring; 10, attached ring; 11, annular groove four; 12, air hole; 13, annular air pipe; 14, air nozzle; 15, clamping centering assembly; 16, clamping block; 17, hydraulic telescopic cylinder one; 18, connecting plate; 19, hydraulic telescopic cylinder two; 20, connecting frame; 21, hydraulic telescopic cylinder three; 22, sealing assembly two; 23, disc; 24, annular groove five; 25, sealing piece two; 26, detection tube; 27, air inlet pipe; 28, liquid inlet pipe; 29, air compressor; 30, electric control valve one; 31, gas flow sensor; 32, liquid pump; 33, liquid storage tank; 34, liquid outlet hole; 35, collection tube; 36, air outlet pipe; 37, liquid outlet pipe; 38, vacuum pump one; 39, detection assembly; 40, vacuum pump two; 41, liquid flow sensor; 42, electric control valve two. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0032] Please refer to Figures 1-6 The application provides a technical solution: an automotive plastic pipeline air tightness automatic detection system, comprising a rotatable rotary disc 1, the rotary disc 1 is provided with a base 2 on the lower side, the base 2 is provided with a cam divider (not shown in the figure), the cam divider is a conventional technology, and the cam divider is a kind of high-precision rotary device, in the embodiment, the output shaft of the cam divider is fixedly connected with the rotary disc 1, so as to drive the rotary disc 1 to perform intermittent indexing rotary motion according to fixed angle.

[0033] The rotary disc 1 is fixedly connected with three sealing assemblies one 3 on the upper side, and the three sealing assemblies one 3 are uniformly distributed in a circle with the center of the rotary disc 1 as the center;

[0034] As Figure 2, three sealing assemblies 3 each include a circular table 4, and the circular table 4 is provided with annular grooves 5 corresponding to plastic pipes of different diameters, and the annular grooves 5 are concentrically arranged with the circular table 4;

[0035] Each annular groove 5 is embedded with a sealing element 6, and the sealing element 6 is an annular rubber ring matched with the annular groove 5;

[0036] As Figure 3 , the sealing element 6 is provided with an annular groove 7 on the upper side, and the radial cross-sectional shape of the annular groove 7 is a "concave" shape, and the two inner side walls of the annular groove 7 are respectively matched with the outer pipe wall and the inner pipe wall of the plastic pipe;

[0037] The two inner side walls of the annular groove 7 are provided with annular grooves 8, and the radial cross-sectional shape of the annular groove 8 is a right trapezoid;

[0038] The two inner side walls of the two annular grooves 8 are fixedly connected with two support rings 9, and the two support rings 9 on the same annular groove 8 are arranged in an upper and lower manner;

[0039] As Figure 4 , the cross-sectional line a of the two support rings 9 on the same annular groove 8 forms an opening upward 30° angle C with the inner side wall of the annular groove 8.

[0040] The end of the support ring 9 away from the annular groove 8 connected with the support ring 9 is fixedly connected with an attaching ring 10, and the cross-sectional line b of the attaching ring 10 forms an opening downward 45° angle D with the cross-sectional line a of the support ring 9.

[0041] The side of the attaching ring 10 away from the support ring 9 is provided with two annular grooves 11, and the radial cross-sectional shape of the annular groove 11 is a semicircle, and the opening of the annular groove 11 faces the center thereof;

[0042] Each annular groove 11 is provided with a plurality of air holes 12, and the plurality of air holes 12 are uniformly distributed around the center of the annular groove 11, and the air holes 12 penetrate the attaching ring 10;

[0043] The side of the attaching ring 10 close to the support ring 9 is provided with an annular air pipe 13 corresponding to the annular groove 11, and the annular air pipe 13 is fixedly connected with an air nozzle 14 corresponding to the air hole 12, and the air nozzle 14 is inserted into the air hole 12 and is in sealing connection with the air hole 12.

[0044] The annular air pipe 13 is communicated with a vacuum pump 38 through a pipeline, the vacuum pump 38 is arranged on one side of the base 2, and the pipeline communicated with the annular air pipe 13 penetrates the sealing element 6 and the circular table 4 and is communicated with the vacuum pump 38; through the vacuum pump 38, the air hole 12 is used for adsorbing the pipe wall of the plastic pipeline inserted into the annular groove 7, and the adhering ring 10 is used for sealing and connecting the pipe wall of the plastic pipeline.

[0045] As Figure 2 , the rotating disc 1 is provided with a clamping and centering assembly 15 corresponding to the three sealing assemblies 3, the clamping and centering assembly 15 comprises three clamping blocks 16, and the three clamping blocks 16 are uniformly distributed in a circle with the center of the circular table 4 as the center;

[0046] The side, away from each other, of the three clamping blocks 16 is provided with a hydraulic telescopic cylinder 17, the lower side of the fixed end of the hydraulic telescopic cylinder 17 is fixedly connected with a connecting plate 18, the lower side of the connecting plate 18 is provided with a hydraulic telescopic cylinder 19, the hydraulic telescopic cylinder 19 is vertically arranged, the fixed end of the hydraulic telescopic cylinder 19 is fixedly connected on the rotating disc 1, and the output end of the hydraulic telescopic cylinder 19 is fixedly connected with the connecting plate 18.

[0047] Firstly, the three hydraulic telescopic cylinders 17 are used for controlling the clamping blocks 16 to center and clamp the plastic pipeline placed on the sealing assembly 3, and then the output end of the hydraulic telescopic cylinder 19 is controlled to retract, so that the clamping blocks 16 drive the clamped plastic pipeline to be inserted into the corresponding annular groove 5 for sealing.

[0048] As Figure 5 , the base 2 is provided with a detection assembly 39, the detection assembly 39 comprises a connecting frame 20, the connecting frame 20 is in an “L” shape, the side, away from the base 2, of the connecting frame 20 is fixedly connected with three hydraulic telescopic cylinders 21 on the lower side, the three hydraulic telescopic cylinders 21 are vertically arranged, the fixed ends of the three hydraulic telescopic cylinders 21 are fixedly connected on the connecting frame 20, and the output ends of the three hydraulic telescopic cylinders 21 are fixedly connected with a sealing assembly 22.

[0049] The sealing assembly 22 comprises a disc 23, the three hydraulic telescopic cylinders 21 are uniformly arranged in a circle with the center of the disc 23 as the reference, a plurality of annular grooves 24 corresponding to the plurality of annular grooves 5 on the sealing assembly 3 are formed on the side, facing the base 2, of the disc 23, a sealing element 25 is embedded in the annular groove 24, and the sealing element 25 is the same in structure as the sealing element 6.

[0050] The pipeline, communicated with the annular air pipe 13, of the sealing element 25 penetrates the sealing element 25 and the disc 23 and is communicated with a vacuum pump 40, and the vacuum pump 40 is arranged on one side of the base 2.

[0051] As Figure 6A detection tube 26 is connected through the center of the disc 23, and an input end of the detection tube 26 is fixedly connected with an air inlet pipe 27 and a liquid inlet pipe 28 through a three-way valve respectively;

[0052] An air compressor 29 is fixedly connected to an input end of the air inlet pipe 27, and an electric control valve one 30 is arranged on the air inlet pipe 27, which is used for controlling the on-off of high-pressure gas in the air inlet pipe 27. A gas flow sensor 31 is arranged on a side pipeline of an output end of the electric control valve one 30, which is used for detecting the air tightness of the plastic pipeline.

[0053] A liquid pump 32 is fixedly connected to an input end of the liquid inlet pipe 28, and an electric control valve two 42 is arranged on the liquid inlet pipe 28, which is used for controlling the on-off of liquid in the liquid inlet pipe 28. A liquid storage tank 33 is connected to an input end pipeline of the liquid pump 32. A liquid flow sensor 41 is arranged on a side pipeline of an output end of the electric control valve two 42, which is used for detecting the air tightness of the plastic pipeline.

[0054] The gas flow sensor 31 and the liquid flow sensor 41 are both signal connected with a processor.

[0055] A plurality of liquid outlet holes 34 are arranged in the center of the circular table 4, and the plurality of liquid outlet holes 34 do not interfere with the annular groove one 5. The liquid outlet holes 34 penetrate the circular table 4, and a collection pipe 35 is arranged on the lower side of the rotating disc 1 corresponding to the circular table 4. One end of the collection pipe 35 is embedded on the rotating disc 1 and communicates with the liquid outlet holes 34.

[0056] An air outlet pipe 36 and a liquid outlet pipe 37 are fixedly connected to an output end of the collection pipe 35 through a three-way valve. An output end of the liquid outlet pipe 37 communicates to the liquid storage tank 33.

[0057] A liquid and electric slip ring is concentrically arranged on the lower side of the rotating disc 1. The liquid and electric slip ring is a conventional technology. A stator end of the liquid and electric slip ring is fixedly connected to the base 2. A rotor end of the liquid and electric slip ring is sleeved on an output shaft of the cam divider and is fixedly connected with the rotating disc 1. The liquid and electric slip ring is a device capable of realizing power, signal, gas and liquid transmission between relatively rotating components. Here, it is used for power, signal, gas and liquid switching between components on the rotating disc 1 and components not on the rotating disc 1.

[0058] Specifically, a pipeline of the annular air pipe 13 on the rotating disc 1 is connected with a pipeline of the vacuum pump one 38 through the liquid and electric slip ring switching. The liquid outlet pipe 37 is communicated with the liquid storage tank 33 through the liquid and electric slip ring switching.

[0059] A transmission-in conveying belt and an industrial robot one are arranged on the right side of the base 2. The industrial robot one is used for clamping and placing the plastic pipeline to be detected on the transmission-in conveying belt on the rotating disc 1.

[0060] The left side of the base 2 is provided with a waste conveying belt, a finished product conveying belt and an industrial robot two, the industrial robot two is used for placing the unqualified plastic pipeline after detection on the waste conveying belt, and placing the qualified plastic pipeline after detection on the finished product conveying belt.

[0061] In the embodiment, the industrial robot one clamps and places the plastic pipeline to be detected on the incoming conveying belt on the circular table 4 on the right side of the rotating disc 1;

[0062] Then the plastic pipeline is clamped and centered by the clamping and centering assembly 15 corresponding to the circular table 4; specifically, the output ends of the three hydraulic telescopic cylinders one 17 are controlled to extend synchronously, so that the clamping block 16 centers and clamps the plastic pipeline;

[0063] Then the output ends of the three hydraulic telescopic cylinders two 19 are controlled to retract synchronously, so that the clamping block 16 clamping the plastic pipeline descends and inserts into the corresponding annular groove one 5, and is attached to the inner wall of the annular groove two 7 of the sealing element one 6.

[0064] As Figure 3 , the plastic pipeline is attached to the ring 10, which is twisted from the inclined state to the vertical state under the pressure of the plastic pipe and attached to the wall of the plastic pipeline;

[0065] At this time, the vacuum pump one 38 is started, and the vacuum pump one 38 sucks air from the air hole 12 through the pipeline. Since the attachment ring 10 is attached to the wall of the plastic pipeline, the annular groove four 11 forms a sealed cavity with the wall of the plastic pipeline. In the state of air suction of the air hole 12, the cavity formed by the annular groove four 11 and the plastic pipeline is in a negative pressure state, so that the attachment ring 10 is more closely attached to the plastic pipeline, and the sealing effect of the attachment ring 10 on the plastic pipeline is improved;

[0066] Then control the cam divider to operate, the sealing assembly one 3 drives the plastic pipeline thereon to rotate to the side of the detection assembly 39, and the detection assembly 39 performs air tightness detection.

[0067] At the same time, the industrial robot one again clamps and places the next plastic pipeline to be detected on the circular table 4 rotated to the left side, and the clamping and centering assembly 15 corresponding to the circular table 4 centers and clamps the plastic pipeline and inserts it into the corresponding annular groove one 5, so that the end face is attached to the inner wall of the annular groove two 7.

[0068] The output end of the hydraulic telescopic cylinder three 21 is extended, so that the disc 23 is lowered, and the corresponding annular groove five 24 on the disc 23 is clamped on the other end face of the plastic pipe. The sealing principle of the sealing element two 25 in the annular groove five 24 is consistent with the sealing principle of the sealing element one 6 on the end face of the plastic pipe. The air hole 12 on the sealing element two 25 inhales air by starting the vacuum pump two 40, so that the sealing element two 25 seals the plastic pipe by adsorption. There is no need to repeat the description here.

[0069] After the sealing element two 25 seals the other end face of the plastic pipe, the two ends of the plastic pipe are both sealed.

[0070] First, the air compressor 29 introduces compressed gas into the detection pipe 26 through the air inlet pipe 27. At this time, the three-way valve on one side of the collection pipe 35 is in a closed state, so as to ensure that the gas does not leak through the pipeline. Whether the gas entering the plastic pipe leaks is detected by the gas flow sensor 31.

[0071] The processor presets the warning value of gas leakage, denoted as A1, and the actual value of gas leakage detected by the gas flow sensor 31, denoted as A2.

[0072] When A2>A1, it is directly determined that the air tightness of the plastic pipe is unqualified, so as to realize rapid screening of the plastic pipe with large leakage.

[0073] When A2≤0.1*A1, it is directly determined that the air tightness of the plastic pipe is qualified.

[0074] Since the injected gas may be adsorbed by the plastic pipe wall, the gas injection detection has the characteristic of large error. When 0.1*A1

[0075] The air compressor 29 is turned off, and the three-way valve on the collection pipe 35 is opened to communicate with the gas outlet pipe 36, so that the high-pressure gas is discharged. After the high-pressure gas is discharged, the three-way valve on the collection pipe 35 is closed again.

[0076] Then, the three-way valve pipeline on the detection pipe 26 is switched to communicate with the liquid inlet pipe 28, and the liquid pump 32 is started. The liquid pump 32 pumps the liquid in the liquid storage tank 33 into the plastic pipe, and detects whether the liquid in the plastic pipe leaks by the liquid flow sensor 41.

[0077] The processor presets the warning value of liquid leakage, denoted as Y1, and Y1≤0.1*A1. The processor presets the actual value of liquid leakage detected by the liquid flow sensor 41, denoted as Y2.

[0078] When Y2>Y1, it is determined that the air tightness of the plastic pipe is unqualified.

[0079] When Y2≤Y1, it is determined that the plastic pipe is air-tight and qualified;

[0080] After the liquid injection detection is completed, the three-way valve on the collection pipe 35 is switched to communicate with the liquid outlet pipe 37, the liquid in the plastic pipe flows into the collection pipe 35 through the liquid outlet hole 34 and then flows into the liquid storage tank 33 through the liquid outlet pipe 37 to complete the recovery.

[0081] After the air-tightness detection of the plastic pipe is completed, the detection assembly 39 is reset, then the rotating disc 1 is continuously rotated by the cam divider, so that the plastic pipe is rotated and moved to the left side of the base 2, the unqualified plastic pipe is clamped and placed on the waste conveyor belt by the industrial robot II, and the qualified plastic pipe is clamped and placed on the finished product conveyor belt.

[0082] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or apparatus.

[0083] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An automated testing system for the airtightness of automotive plastic tubing, characterized in that: Including base (2), detection subassembly (39), rotatable carousel (1) and three sealed assembly one (3), carousel (1) is arranged on base (2), three sealed assembly one (3) is fixed on carousel (1) and is evenly distributed in circle, each sealed assembly one (3) includes circular table (4), the circular table (4) is equipped with annular groove one (5) with sealed piece one (6), detection subassembly (39) includes liftable sealed assembly two (22), sealed assembly two (22) is equipped with sealed piece two (25) with the same structure of sealed piece one (6); The upper side of the sealed piece one (6) is provided with an annular groove two (7), the two inner side walls of the annular groove two (7) are provided with an annular groove three (8), the inner side walls of the two annular groove threes (8) are fixedly connected with two support rings (9), the end of the support ring (9) away from the annular groove three (8) connected with it is fixedly connected with a sticking ring (10), the side of the sticking ring (10) away from the support ring (9) is provided with two annular grooves four (11), a plurality of gas holes (12) are provided in each annular groove four (11); The center of the sealed assembly two (22) is connected with a detection tube (26), the input end of the detection tube (26) is fixedly connected with an air inlet pipe (27) and a liquid inlet pipe (28) through a three-way valve, the air inlet pipe (27) and the liquid inlet pipe (28) are respectively provided with a gas flow sensor (31) and a liquid flow sensor (41), the gas flow sensor (31) and the liquid flow sensor (41) are signal connected with a processor; The two support rings (9) on the same annular groove three (8) are arranged in up and down, the section line a of the two support rings (9) on the same annular groove three (8) and the inner side wall of the annular groove three (8) form an opening upward 30° angle C; The section line b of the sticking ring (10) and the section line a of the support ring (9) form an opening downward 45° angle D; The side of the sticking ring (10) close to the support ring (9) is provided with an annular air pipe (13) corresponding to the annular groove four (11), the annular air pipe (13) is fixedly connected with an air nozzle (14) corresponding to the air hole (12), the air nozzle (14) is inserted into the air hole (12) and is in sealing connection with the air hole (12), the annular air pipe (13) is communicated with a vacuum pump one (38) through a pipeline; A plurality of liquid outlet holes (34) are provided in the center of the circular table (4), the liquid outlet holes (34) penetrate the circular table (4), a collection pipe (35) is provided in the lower side of the carousel (1) corresponding to the circular table (4), one end of the collection pipe (35) is embedded in the carousel (1) and is in communication with the liquid outlet hole (34), the output end of the collection pipe (35) is fixedly connected with an air outlet pipe (36) and a liquid outlet pipe (37) through a three-way valve; Corresponding to three sealing assemblies (3) are provided with clamping centering assemblies (15), the clamping centering assemblies (15) include three clamping blocks (16), three clamping blocks (16) are evenly distributed in a circle with the center of the circular table (4) as the center, the side away from each other of three clamping blocks (16) is provided with hydraulic telescopic cylinder one (17), the fixed end of the hydraulic telescopic cylinder one (17) is fixedly connected with the connecting plate (18), the lower side of the connecting plate (18) is provided with hydraulic telescopic cylinder two (19), the fixed end of the hydraulic telescopic cylinder two (19) is fixedly connected on the turntable (1), the output end of the hydraulic telescopic cylinder two (19) is fixedly connected with the connecting plate (18); The detection assembly (39) further includes a connecting frame (20), the lower side of the side away from the base (2) of the connecting frame (20) is fixedly connected with three hydraulic telescopic cylinder three (21), the fixed end of three hydraulic telescopic cylinder three (21) is fixedly connected on the connecting frame (20), the output end of three hydraulic telescopic cylinder three (21) is fixedly connected with the sealing assembly two (22).

2. The automatic detection system for the air tightness of the plastic pipeline of the automobile according to claim 1, characterized in that: The pipeline of the sealing element two (25) communicating with the annular air pipe (13) penetrates the sealing element two (25) and is communicated with the vacuum pump two (40).

3. The automotive plastic pipe air tightness automatic detection system according to claim 2, characterized in that: The input end of the air inlet pipe (27) is fixedly connected with the air compressor (29), the air inlet pipe (27) is provided with the electric control valve one (30), and the gas flow sensor (31) is arranged on the pipeline on the output end side of the electric control valve one (30); The input end of the liquid inlet pipe (28) is fixedly connected with the liquid pump (32), the input end pipeline of the liquid pump (32) is communicated with the liquid storage tank (33), the output end of the liquid outlet pipe (37) is communicated to the liquid storage tank (33), the liquid inlet pipe (28) is provided with the electric control valve two (42), and the liquid flow sensor (41) is arranged on the pipeline on the output end side of the electric control valve two (42).

4. The automatic detection system for the air tightness of the plastic pipeline of the automobile according to claim 3, characterized in that: The base (2) is provided with a cam divider, the output shaft of the cam divider is fixedly connected with the turntable (1), and the cam divider drives the turntable (1) to perform intermittent indexing rotary motion at a fixed angle.

5. The automatic detection system for the air tightness of a plastic pipe of an automobile according to claim 4, characterized in that: The right side of the base (2) is provided with an incoming conveying belt and an industrial robot one, and the industrial robot one is used for clamping and placing the plastic pipeline to be detected on the incoming conveying belt on the turntable (1); The left side of the base (2) is provided with a waste conveying belt, a finished product conveying belt and an industrial robot two, the industrial robot two places the unqualified plastic pipeline after detection on the waste conveying belt, and the industrial robot two places the qualified plastic pipeline after detection on the finished product conveying belt.

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