CN216349384U

CN216349384U - Air tightness detection system

Info

Publication number: CN216349384U
Application number: CN202122433355.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-04-19
Anticipated expiration: 2031-10-09

Abstract

The utility model relates to an air tightness detection system which comprises a sealing box, a filling mechanism, a first detection mechanism and a second detection mechanism. Through setting up foretell gas tightness detecting system, will wait to detect the work piece and place in the sealed intracavity of seal box, then treat respectively through filling mechanism and first detection mechanism and detect the work piece and the sealed chamber carries out the evacuation, and filling mechanism inputs test gas in waiting to detect the work piece after the evacuation, and then first detection mechanism detect the test gas in the sealed intracavity can, the second detection mechanism does not move this moment. If the test gas is detected, the airtightness of the workpiece to be detected is unqualified, the first detection mechanism needs to be cleaned, and the second or subsequent detection can be performed through the second detection mechanism. Therefore, the first detection mechanism does not need to be stopped to clean, the air tightness of the workpiece to be detected is detected continuously, and the detection efficiency is improved.

Description

Air tightness detection system

Technical Field

The utility model relates to the technical field of automation equipment, in particular to an air tightness detection system.

Background

The air tightness of the outer casing of the battery needs to be detected before the battery is assembled. Conventional detection equipment typically performs helium testing on the housing by injecting helium gas into the housing of the battery and then detecting a leak. However, when the battery case has leakage, helium gas exists in the detection equipment, and at the moment, the detection equipment needs to be stopped to clean the helium gas, so that the detection efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the air tightness detection system which does not need to be stopped after detecting the leakage gas and improves the detection efficiency is needed to be provided for solving the problem that the traditional detection equipment needs to be stopped to clean the leakage gas after detecting the leakage of the battery shell.

An air-tightness detection system comprising:

the sealing box is provided with a sealing cavity for accommodating a workpiece to be detected;

the filling mechanism is connected with the sealing box, is connected with the workpiece to be detected in the sealing cavity, and is used for vacuumizing the workpiece to be detected and injecting test gas;

the first detection mechanism is connected with the seal box and used for vacuumizing the seal cavity and detecting the test gas in the seal cavity; and

the second detection mechanism is connected with the seal box and used for vacuumizing the seal cavity and detecting the test gas in the seal cavity;

and only one of the first detection mechanism and the second detection mechanism vacuumizes the sealed cavity and detects the test gas in the sealed cavity at the same time.

By arranging the gas tightness detection system, a workpiece to be detected is placed in the sealed cavity, then the workpiece to be detected and the sealed cavity are respectively vacuumized through the filling mechanism and the first detection mechanism, test gas is input into the workpiece to be detected by the filling mechanism after vacuumization, then the first detection mechanism detects the test gas in the sealed cavity, and at the moment, the second detection mechanism does not act. If the test gas is detected, the airtightness of the workpiece to be detected is unqualified, the first detection mechanism needs to be cleaned, and the second or subsequent detection can be performed through the second detection mechanism. Therefore, the first detection mechanism does not need to be stopped to clean, the air tightness of the workpiece to be detected is detected continuously, and the detection efficiency is improved.

In one embodiment, the sealing box includes a box body and a cover body, the box body is used for accommodating the workpiece to be detected, the cover body is connected with the box body in a sealing manner to form the sealing cavity, and the filling mechanism, the first detection mechanism and the second detection mechanism are all connected to the cover body.

In one embodiment, the air tightness detection system is provided with a feeding station and a detection station, and the air tightness detection system further comprises a driving mechanism;

the filling mechanism, the first detection mechanism, the second detection mechanism and the cover body are arranged at the detection station, and the driving mechanism is in transmission connection with the box body so as to drive the box body to move back and forth between the feeding station and the detection station;

when the box body moves to the feeding station, the box body is used for receiving the workpiece to be detected;

when the box body moves to the detection station, the box body can be in sealing connection with the cover body, and the filling mechanism is connected with the workpiece to be detected in the sealing cavity.

In one embodiment, the first detection mechanism comprises a first pumping assembly and a first detection assembly, and the second detection mechanism comprises a second pumping assembly and a second detection assembly;

the first air exhaust assembly and the first detection assembly are connected to the sealing box, the first air exhaust assembly is used for vacuumizing the sealing cavity, and the first detection assembly is used for detecting the test gas in the sealing cavity;

the second air exhaust assembly and the second detection assembly are connected to the sealing box, the second air exhaust assembly is used for vacuumizing the sealing cavity, and the second detection assembly is used for detecting the test gas in the sealing cavity.

In one embodiment, the first pumping assembly comprises a first pumping pipeline and a first pumping control valve, and the first detection assembly comprises a first detection pipeline and a first detection control valve;

the first air exhaust pipeline and the first detection pipeline are connected to the seal box and communicated with the seal cavity, one end of the seal box is used for being connected with air exhaust equipment, one end of the seal box is used for being connected with detection equipment for detecting test gas, the first air exhaust control valve is arranged on the first air exhaust pipeline and used for controlling the on-off of the first air exhaust pipeline, and the first detection control valve is arranged on the first detection pipeline and used for controlling the on-off of the first detection pipeline.

In one embodiment, the second pumping assembly comprises a second pumping pipeline and a second pumping control valve, and the second detection assembly comprises a second detection pipeline and a second detection control valve;

the second air exhaust pipeline and the second detection pipeline are connected to the seal box and communicated with the seal cavity, one end, far away from the seal box, of the second air exhaust pipeline is used for being connected with air exhaust equipment, one end, far away from the seal box, of the second detection pipeline is connected with the detection equipment, the second air exhaust control valve is arranged on the second air exhaust pipeline and used for controlling the on-off of the second air exhaust pipeline, and the second detection control valve is arranged on the second detection pipeline and used for controlling the on-off of the second detection pipeline.

In one embodiment, the gas tightness detection system further comprises a manifold, one end of the manifold is connected with the seal box and is communicated with the seal cavity, and the first air suction pipeline, the second air suction pipeline, the first detection pipeline and the second detection pipeline are all communicated with the other end, away from the seal box, of the manifold.

In one embodiment, the air tightness detection system comprises a plurality of seal boxes, a plurality of filling mechanisms, a plurality of first detection mechanisms and a plurality of second detection mechanisms, and further comprises a first communicating pipe and a second communicating pipe;

each filling mechanism is connected with one sealing box, the first air suction pipeline and the first detection pipeline of each first detection mechanism are connected with one sealing box, and the second air suction pipeline and the second detection pipeline of each second detection mechanism are connected with one sealing box;

the first communication pipe is simultaneously communicated with the first air suction pipeline of each first detection mechanism and the second air suction pipeline of each second detection mechanism, and the first communication pipe is connected with the air suction equipment;

the second communicating pipe is simultaneously communicated with the first detection pipelines of the first detection mechanisms and the second detection pipelines of the second detection mechanisms, and the second communicating pipe is connected with the detection equipment.

In one embodiment, the filling mechanism includes a vacuumizing assembly, a filling assembly and a recycling assembly, the vacuumizing assembly, the filling assembly and the recycling assembly are all connected with the sealing box and communicated with the workpiece to be detected in the sealing cavity, the vacuumizing assembly is used for vacuumizing the workpiece to be detected, the filling assembly is used for inputting the test gas into the workpiece to be detected, and the recycling assembly is used for extracting the test gas input into the workpiece to be detected.

In one embodiment, the air tightness detection system comprises a plurality of sealed boxes, and the filling mechanism, the first detection mechanism and the second detection mechanism are detachably connected with any one sealed box.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a gas tightness detection system according to an embodiment of the present invention;

FIG. 2 is a schematic side view of the hermeticity detection system shown in FIG. 1;

fig. 3 is a schematic structural diagram of a gas tightness detection system according to another embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 and 2, an air-tightness detecting system 100 according to an embodiment of the present invention includes a sealed box 10, a filling mechanism 20, a first detecting mechanism 30, and a second detecting mechanism 40.

The seal box 10 has a sealed chamber for receiving a workpiece to be tested.

The filling mechanism 20 is connected to the seal box 10, connected to the workpiece to be detected in the seal cavity, and used for vacuumizing the workpiece to be detected and injecting a test gas.

First detection mechanism 30 and second detection mechanism 40 all connect in seal box 10, and all are used for to the sealed chamber evacuation and detect the test gas in the sealed chamber.

Wherein only one of the first sensing mechanism 30 and the second sensing mechanism 40 evacuates the sealed chamber and senses the test gas within the sealed chamber at the same time.

In this embodiment, the workpiece to be detected is a lithium battery, and the test gas is helium. In other embodiments, the workpiece to be detected may be other workpieces requiring gas tightness detection, and the test gas may also be other gases that do not react with the workpiece to be detected.

By arranging the air tightness detection system, a workpiece to be detected is placed in the sealed cavity, then the workpiece to be detected and the sealed cavity are respectively vacuumized through the filling mechanism 20 and the first detection mechanism 30, after vacuumization, the filling mechanism 20 inputs test gas into the workpiece to be detected, then the first detection mechanism 30 detects the test gas in the sealed cavity, and at the moment, the second detection mechanism 40 does not act. If the test gas is detected, the airtightness of the workpiece to be detected is not qualified, the first detection mechanism 30 needs to be cleaned, and the second or subsequent detection can be performed by the second detection mechanism 40. Therefore, the first detection mechanism 30 does not need to be stopped to clean, the air tightness of the workpiece to be detected is detected continuously, and the detection efficiency is improved.

It is understood that the second detection mechanism 40 may complete cleaning of the first detection mechanism 30 during detection, so that the first detection mechanism 30 may continue to be used subsequently.

In addition, the embodiment only includes the first detection mechanism 30 and the second detection mechanism 40, and in other embodiments, it may further include a third detection mechanism or even more detection mechanisms, which is not limited herein, but only one of the plurality of detection mechanisms is activated, that is, only one detection mechanism evacuates the sealed cavity and detects the test gas in the sealed cavity at the same time.

In some embodiments, the sealed box 10 includes a box body 11 and a cover body 12, the box body 11 is used for accommodating a workpiece to be detected, the cover body 12 is hermetically connected with the box body 11 to form a sealed cavity, and the filling mechanism 20, the first detecting mechanism 30 and the second detecting mechanism 40 are all connected with the cover body 12.

Therefore, the workpiece to be detected can be placed in the box body 11, and then the cover body 12 is connected with the box body 11, so that the first detection mechanism 30 and the second detection mechanism 40 can vacuumize and detect the sealed cavity, and the filling mechanism 20 is connected with the workpiece to be detected in the sealed cavity.

Of course, in other embodiments, the filling mechanism 20, the first detecting mechanism 30 and the second detecting mechanism 40 may also be connected to the box 11, and when a workpiece to be detected is placed in the box 11, the filling mechanism 20 may be connected to the workpiece to be detected, and then the cover 12 may be connected to the box 11.

In some embodiments, the air tightness detecting system further includes a driving mechanism 50, the air tightness detecting system has a feeding station and a detecting station, the filling mechanism 20, the first detecting mechanism 30, the second detecting mechanism 40 and the cover 12 are disposed at the detecting station, and the driving mechanism 50 is in transmission connection with the box 11 to drive the box 11 to move back and forth between the feeding station and the detecting station.

When the box body 11 moves to the feeding station, the box body 11 is used for receiving a workpiece to be detected; when the box body 11 moves to the detection station, the box body 11 can be connected with the cover body 12 in a sealing mode to form a sealed cavity, and the filling mechanism 20 is connected with a workpiece to be detected in the sealed cavity.

In other embodiments, the filling mechanism 20, the first detecting mechanism 30 and the second detecting mechanism 40 are connected to the box 11 and located at the detecting station, and the driving mechanism 50 may also be in transmission connection with the cover 12 to drive the cover 12 to move back and forth between the feeding station and the detecting station.

When the cover body 12 moves to the feeding station, the cover body 12 is used for receiving and bearing the workpiece to be detected; when the cover 12 moves to the detection station, the cover 12 can be connected to the box 11 in a sealing manner, so that the workpiece to be detected loaded on the cover 12 is located in the sealed cavity, and the filling mechanism 20 is connected to the workpiece to be detected in the sealed cavity.

In practical application, the driving mechanism 50 includes a translation driving member 51 and a lifting driving member 52, the translation driving member 51 is in transmission connection with the lifting driving member 52 to drive the lifting driving member 52 to move back and forth between the loading station and the detection station, and the lifting driving member 52 is in transmission connection with the box body 11 (the cover body 12) to drive the box body 11 (the cover body 12) to lift up and down after the lifting driving member 52 moves to the detection station, so as to be in sealing connection with the cover body 12 (the box body 11).

It will be understood that the box 11 is an open box, that is, the box 11 has an open cavity and an opening communicating with the open cavity, and the cover 12 is hermetically connected to the box 11 to close the opening of the box 11, thereby forming a sealed cavity.

Under the condition that actuating mechanism 50 is connected with box 11 transmission, the open intracavity of box 11 has the fixed position of fixing the work piece of waiting to detect, when box 11 moved the material loading station, wait to detect the work piece material loading and place the fixed position in open intracavity, box 11 removed the detection station after, lift driving piece 52 action, drive box 11 towards the lid 12 that is located the detection station moves, until with lid 12 sealing connection.

Under the condition that the driving mechanism 50 is in transmission connection with the cover body 12, the cover body 12 is provided with a fixing position for fixing a workpiece to be detected, when the cover body 12 moves to the feeding station, the workpiece to be detected is fed and placed on the fixing position on the cover body 12, after the cover body 12 moves to the detection station, one side of the cover body 12 where the workpiece to be detected is placed faces the opening of the box body 11, and the lifting driving part 52 acts to drive the cover body 12 to move towards the box body 11 until the cover body 12 is in sealing connection with the box body 11. Since the side of the cover 12 where the workpiece to be detected is placed faces the opening of the box 11, the cover 12 can close the opening, and the workpiece to be detected on the cover 12 is located in the sealed cavity formed by the cover 12 and the box 11.

In some embodiments, the airtightness detection system includes a plurality of airtight containers 10, and the filling mechanism 20, the first detection mechanism 30 and the second detection mechanism 40 are detachably connected to any one of the airtight containers 10. The first detection mechanism 30 and the second detection mechanism 40 detect one seal box 10 at a time, the second detection mechanism 40 can detect when the first detection mechanism 30 needs to be cleaned, continuous detection can be realized by a plurality of seal boxes 10, and the detection efficiency is further improved.

It should be noted that, in other embodiments, one cover 12 may be matched with a plurality of cases 11 or one case 11 may be matched with a plurality of covers 12, but since the case 11 has an open cavity, when there is a leakage of the workpiece to be detected, the test gas may remain in the open cavity, and therefore, the driving mechanism 50 is preferably in transmission connection with the case 11. That is, different boxes 11 are used to cooperate with the same cover 12, each box 11 can be connected with the cover 12 in a sealing manner, and the driving mechanism 50 can drive any box 11 to move from the loading station to the detection station and be connected with the cover 12 in a sealing manner.

In some embodiments, the first inspection mechanism 30 includes a first pumping assembly 31 and a first inspection assembly 32, the second inspection mechanism 40 includes a second pumping assembly 41 and a second inspection assembly 42, and the first pumping assembly 31, the first inspection assembly 32, the second pumping assembly 41 and the second inspection assembly 42 are all connected to the enclosure 10. The first air pumping assembly 31 is used for vacuumizing the sealed cavity, the first detection assembly 32 is used for detecting the test gas in the sealed cavity, the second air pumping assembly 41 is used for vacuumizing the sealed cavity, and the second detection assembly 42 is used for detecting the test gas in the sealed cavity.

In some embodiments, the first pumping assembly 31 includes a first pumping line 33 and a first pumping control valve 34, the first pumping line 33 is connected to the sealing box 10 and is communicated with the sealing cavity, an end of the first pumping line 33 away from the sealing box 10 is used for connecting a pumping device, and the first pumping control valve 34 is disposed on the first pumping line 33 and is used for controlling on/off of the first pumping line 33.

Further, first detection assembly 32 includes first detection pipeline 35 and first detection control valve 36, and first detection pipeline 35 connects in seal box 10, and with the seal chamber intercommunication, and the one end that seal box 10 was kept away from to first detection pipeline 35 is connected with the check out test set that is used for detecting test gas, and first detection control valve 36 sets up in first detection pipeline 35 for the break-make of control first detection pipeline 35.

Thus, when the first detection mechanism 30 works, the first detection control valve 36 is closed, the first evacuation control valve 34 is opened, the evacuation device acts to evacuate the sealed cavity, after evacuation is completed, the first evacuation control valve 34 is closed, the filling mechanism 20 evacuates the workpiece to be detected and inputs test gas, then the first detection control valve 36 is opened, and the detection device detects whether the test gas exists in the sealed cavity.

In some embodiments, the second pumping assembly 41 includes a second pumping line 43 and a second pumping control valve 44, the second pumping line 43 is connected to the sealing box 10 and is communicated with the sealing cavity, an end of the second pumping line 43 away from the sealing box 10 is used for connecting a pumping device, and the second pumping control valve 44 is disposed on the second pumping line 43 and is used for controlling on/off of the second pumping line 43.

Further, the second detection assembly 42 includes a second detection pipeline 45 and a second detection control valve 46, the second detection pipeline 45 is connected to the seal box 10 and communicated with the seal cavity, one end of the second detection pipeline 45, which is far away from the seal box 10, is connected with a detection device for detecting the test gas, and the second detection control valve 46 is arranged on the second detection pipeline 45 and used for controlling the on-off of the second detection pipeline 45.

It is understood that the detection operation of the second detection mechanism 40 is the same as that of the first detection mechanism 30, and thus, the description thereof is omitted.

Meanwhile, the air extraction device and the detection device are components in the first detection mechanism 30 and the second detection mechanism 40, the air extraction device may be a vacuum machine, and when the test gas is helium, the detection device may be a helium detector.

In some embodiments, the first detecting mechanism 30 further includes a first vacuum breaking control valve 61, and the first vacuum breaking control valve 61 is disposed on the first air pumping pipeline 33 and is used for controlling the connection and disconnection between the first air pumping pipeline 33 and the outside. That is, when the detection is finished or the sealing box 10 needs to be opened for other reasons, the first vacuum breaking control valve 61 is opened, so that the first air suction pipeline 33 is communicated with the outside, and the vacuum in the sealing cavity is broken. When the vacuum pumping is needed, the first vacuum breaking control valve 61 is closed, and the first pumping pipeline 33 is disconnected from the outside.

Further, the second detection mechanism 40 further includes a second vacuum breaking control valve 61, and the second vacuum breaking control valve 61 is disposed on the second air pumping pipeline 43 and is used for controlling the connection and disconnection between the second air pumping pipeline 43 and the outside.

In some embodiments, the air-tightness detecting system further includes a manifold 62, one end of the manifold 62 is connected to the sealed box 10 and is communicated with the sealed cavity, and the first suction line 33 and the first detecting line 35 are both communicated with the other end of the manifold 62 away from the sealed box 10.

Therefore, only an opening communicated with the sealing cavity for detection needs to be formed in the sealing box 10, the processing difficulty is reduced, and the sealing performance of the sealing cavity is more reliable.

Further, the first air suction pipeline 33, the second air suction pipeline 43, the first detection pipeline 35 and the second detection pipeline 45 are all communicated with the other end of the collecting pipe 62 far away from the seal box 10.

It can be understood that the first air suction pipeline 33, the second air suction pipeline 43, the first detection pipeline 35 and the second detection pipeline 45 are all provided with control valves to control the on-off of the corresponding pipelines, so that the first air suction pipeline 33, the second air suction pipeline 43, the first detection pipeline 35 and the second detection pipeline 45 can be connected with the seal box 10 through the same collecting pipe 62 and communicated with the seal cavity, and the pipelines and the two detection mechanisms cannot be influenced by each other.

In practical application, the first detection mechanism 30 and the second detection mechanism 40 share one vacuum breaking control valve 61, and the vacuum breaking control valve 61 is disposed on the collecting pipe 62 and is used for controlling the connection and disconnection between the collecting pipe 62 and the outside.

In some embodiments, the filling mechanism 20 includes a vacuum pumping assembly, a filling assembly and a recycling assembly, the vacuum pumping assembly, the filling assembly and the recycling assembly are all connected to the sealing box 10 and are communicated with the workpiece to be detected in the sealing cavity, the vacuum pumping assembly is used for pumping vacuum to the workpiece to be detected, the filling assembly is used for inputting the test gas into the workpiece to be detected, and the recycling assembly is used for pumping out the test gas input into the workpiece to be detected.

It should be noted that, when the filling mechanism 20 is connected to the cover 12, the cover 12 has a connection nozzle connected to the workpiece to be detected, and the vacuum pumping assembly, the filling assembly and the recycling assembly all include a pipeline connected to the connection nozzle and a control valve for controlling the corresponding pipeline, which are not described herein again.

Referring to fig. 3, in some embodiments, the air-tightness detecting system includes a plurality of seal boxes 10, a plurality of filling mechanisms 20, a plurality of first detecting mechanisms 30 and a plurality of second detecting mechanisms 40, each filling mechanism 20 is connected to one seal box 10, the first air-extracting line 33 and the first detecting line 35 of each first detecting mechanism 30 are connected to one seal box 10, and the second air-extracting line 43 and the second detecting line 45 of each second detecting mechanism 40 are connected to one seal box 10.

Therefore, the detection of a plurality of workpieces to be detected can be carried out simultaneously. It should be also explained that the plurality of seal housings 10 in the present embodiment are matched with the plurality of filling mechanisms 20, the plurality of first detecting mechanisms 30 and the plurality of second detecting mechanisms 40, whereas the plurality of seal housings 10 in the foregoing embodiments are matched with one filling mechanism 20, one first detecting mechanism 30 and one second detecting mechanism 40, and the two embodiments can be combined with each other.

Specifically, the number of seal boxes 10 is larger than the number of filling mechanisms 20, first detection mechanisms 30, and second detection mechanisms 40, and the plurality of filling mechanisms 20, the plurality of first detection mechanisms 30, and the plurality of second detection mechanisms 40 enable simultaneous detection of the plurality of seal boxes 10, and after the detection is completed, detection of redundant seal boxes 10 can be continued. In this way, the detection can be carried out continuously, and the detection of a plurality of workpieces to be detected can be carried out each time.

Further, the air tightness detecting system further comprises a first communicating pipe 71, the first communicating pipe 71 is connected to both the first air pumping pipeline 33 of each first detecting mechanism 30 and the second air pumping pipeline 43 of each second detecting mechanism 40, and the first communicating pipe 71 is connected to the air pumping device.

It is confirmed that the first suction line 33 of each first detecting means 30 and the second suction line 43 of each second detecting means 40 are provided with control valves, so that suction and discharge can be performed by the same suction apparatus without mutual influence.

In practical applications, the air tightness detecting system further includes a second communicating pipe 72, the second communicating pipe 72 is simultaneously communicated with the first detecting pipeline 35 of each first detecting mechanism 30 and the second detecting pipeline 45 of each second detecting mechanism 40, and the second communicating pipe 72 is connected with the detecting device.

Of course, in other embodiments, the plurality of first air suction pipes 33 and the plurality of first detection pipes 35 in the plurality of first detection mechanisms 30 may be respectively communicated through two pipes, the two pipes are respectively connected with the air suction device and the detection device, and the plurality of second air suction pipes 43 and the plurality of second detection pipes 45 in the plurality of second detection mechanisms 40 are respectively communicated through two pipes, the two pipes are respectively connected with the air suction device and the detection device.

In order to facilitate understanding of the technical solution of the present invention, the workflow of the air tightness detection system in the above embodiment is described here:

the driving mechanism 50 is in transmission connection with the box body 11, initially, all control valves in the filling mechanism 20, the first detecting mechanism 30 and the second detecting mechanism 40 are closed, after the box body 11 receives a workpiece to be detected at the feeding station, the driving mechanism 50 drives the box body 11 to move to the detecting station and be in sealing connection with the cover body 12, and a connecting nozzle on the cover body 12 is connected with the workpiece to be detected.

The first air-extracting control valve 34 in the first detection mechanism 30 is opened, the air-extracting device is operated to vacuumize the sealed cavity, meanwhile, the vacuum-extracting component in the filling mechanism 20 can also vacuumize the workpiece to be detected, and the first air-extracting control valve 34 and the valves in the vacuum-extracting component are closed after the sealed cavity and the workpiece to be detected are vacuumized.

Next, the filling assembly in the filling mechanism 20 inputs a test gas into the workpiece to be detected, after a preset amount of the test gas is input, the valve in the filling assembly is closed, the first detection control valve 36 in the first detection mechanism 30 is opened, and the detection equipment detects whether the test gas exists in the sealed cavity.

After the detection is finished, the recovery assembly recovers the test gas in the workpiece to be detected, the first vacuum breaking control valve 61 is opened, and then the box body 11 is separated from the cover body 12. If the test gas is not detected, the box body 11 moves to a blanking station for blanking, and if the test gas is detected, the box body 11 moves to a discharging station for discharging.

When the test gas is detected, the second detecting mechanism 40 detects a subsequent seal box 10, and the detecting process is the same as the first detecting mechanism 30, so that the detailed description thereof is omitted.

In addition, the loading station, the unloading station and the unloading station can be the same station or different stations.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An air-tightness detection system, characterized by comprising:

2. The airtightness detection system according to claim 1, wherein the sealed box includes a box body and a cover body, the box body is configured to accommodate the workpiece to be detected, the cover body is hermetically connected to the box body to form the sealed cavity, and the filling mechanism, the first detection mechanism, and the second detection mechanism are all connected to the cover body.

3. The airtightness detection system according to claim 2, wherein the airtightness detection system has a loading station and a detection station, and further comprises a drive mechanism;

4. The airtightness detection system according to claim 1, wherein the first detection mechanism includes a first pumping assembly and a first detection assembly, and the second detection mechanism includes a second pumping assembly and a second detection assembly;

5. The airtightness detection system according to claim 4, wherein the first pumping assembly includes a first pumping line and a first pumping control valve, and the first detection assembly includes a first detection line and a first detection control valve;

6. The airtightness detection system according to claim 5, wherein the second pumping assembly includes a second pumping line and a second pumping control valve, and the second detection assembly includes a second detection line and a second detection control valve;

7. The airtightness detection system according to claim 6, further comprising a manifold, wherein one end of the manifold is connected to the seal box and is communicated with the seal cavity, and the first suction line, the second suction line, the first detection line and the second detection line are all communicated with the other end of the manifold, which is away from the seal box.

8. The airtightness detection system according to claim 6, wherein the airtightness detection system comprises a plurality of seal boxes, a plurality of filling mechanisms, a plurality of first detection mechanisms, and a plurality of second detection mechanisms, and the airtightness detection system further comprises a first communication pipe and a second communication pipe;

9. The airtightness detection system according to claim 1, wherein the filling mechanism includes a vacuum-pumping assembly, a filling assembly and a recovery assembly, the vacuum-pumping assembly, the filling assembly and the recovery assembly are all connected to the seal box and are communicated with the workpiece to be detected in the seal cavity, the vacuum-pumping assembly is configured to vacuum the workpiece to be detected, the filling assembly is configured to input the test gas into the workpiece to be detected, and the recovery assembly is configured to extract the test gas input into the workpiece to be detected.

10. The airtightness detection system according to claim 1, wherein the airtightness detection system comprises a plurality of sealed boxes, and the filling mechanism, the first detection mechanism, and the second detection mechanism are detachably connected to any one of the sealed boxes.