WO2022168066A1

WO2022168066A1 - Gas leakage testing device for inflatable product

Info

Publication number: WO2022168066A1
Application number: PCT/IB2022/051120
Authority: WO
Inventors: Zhi Xiong Huang; Wei Li; Hong Wen Li; Jin Qie YOU; Yu Kai ZHENG
Original assignee: Intex Industries Xiamen Co. Ltd.
Priority date: 2021-02-08
Filing date: 2022-02-08
Publication date: 2022-08-11
Also published as: MX2023008852A

Abstract

A gas leakage testing device for an inflatable product is disclosed. The gas leackage testing device may comprise at least one gas storage tank, at least one inflating means, a tester, an electric control box, and at least one testing line comprising a loading workstation, a testing workstation and an unloading workstation arranged in sequence. The testing workstation may be provided with a testing frame, a testing lifting/lowering means, and at least two testing covers arranged in sequence from bottom to top. Once the tester has completed a gas leakage testing of one inflatable product, the tester does not need to wait, and may perform gas leakage testing of the next inflatable product directly.

Description

GAS LEAKAGE TESTING DEVICE FOR INFLATABLE PRODUCT

Related Application

[0001] This application is related to Chinese Application No.: 202110180594.9 and Chinese Utility Model Application No.: 202120363754.9 both filed February 8, 2021, the entire disclosures of which are incorporated by reference herein.

[0002] Additionally, the present application is related to Chinese Application No. 202110171163.6, filed February 8, 2021; Chinese Utility Model Application No.: 202120371838.7 filed February 8, 2021; Chinese Utility Model Application Number No. 202120367781.3, filed February 8, 2021; Chinese Utility Model Application No. 202120371730.8 filed February 8, 2021; and Chinese Patent Application No. 202123270682.2, filed Dec. 23, 2021, the entire disclosures of which are expressly incorporated by reference herein.

Technical field

[0003] The present invention relates to the field of gas leakage testing of inflatable products, in particular to a gas leakage testing device for an inflatable product.

Background

[0004] Inflatable products such as inflatable beds, inflatable tables, inflatable boats and inflatable toys are commonly seen on the market, and are popular among consumers on account of their many advantages, which include being lightweight, foldable, portable and comfortable. With a very broad range of applications, they have become a must-have product both for home living and travelling, and have very good market prospects. The airtightness of an inflatable product is a key index forjudging the quality thereof, and a consumer’s user experience of the inflatable product will be directly affected by whether airtightness is excellent or not. Thus, most inflatable products undergo airtightness testing, i.e. gas leakage testing, before entering the market. [0005] Existing gas leakage testing devices have a long testing time and low testing efficiency, so have undoubtedly increased manufacturers’ production costs. In view of this, there is an urgent need for an inflatable product gas leakage testing device that is able to increase gas leakage testing efficiency.

Summary

[0006] In an exemplary embodiment of the present disclosure, a gas leakage testing device for an inflatable product that has high testing efficiency is provided.

[0007] In another exemplary embodiment of the present disclosure a gas leakage testing device for an inflatable product may be provided. The gas leakage testing device may comprise at least one gas storage tank, for storing gas; at least one inflating means, connected to the at least one gas storage tank and used to inflate the inflatable product; a tester, for testing whether the inflatable product has a gas leakage; an electric control box, connected to the tester and configured to control a testing work of the tester; and a testing line. The testing line may comprise a loading workstation, a testing workstation and an unloading workstation arranged in sequence. The loading workstation may be provided with a loading conveying platform, a loading means for pushing the inflatable product to move from the loading workstation toward the testing workstation may be provided on the loading conveying platform, and a loading lifting/lowering means for driving the loading conveying platform to ascend or descend may be connected below the loading conveying platform. The unloading workstation may be provided with an unloading conveying platform, and an unloading lifting/lowering means for driving the unloading conveying platform to ascend or descend may be connected below the unloading conveying platform. The testing workstation may be provided with a testing frame and at least two testing covers arranged in sequence from bottom to top are provided in the testing frame. The testing covers are connected to the tester. A testing lifting/lowering means may be provided on the testing frame and may be connected to the testing covers and configured to control an up/down movement of the testing covers in the testing frame. The loading means, the loading lifting/lowering means, the unloading lifting/lowering means and the testing lifting/lowering means are connected to the electric control box.

[0008] In an example thereof, a bottom plate may be also provided in the testing frame, being arranged below the testing covers; a first testing cover close to the bottom plate mates with the bottom plate to form a first sealed testing space, and a second testing cover mates with an upper end face of the first testing cover therebelow to form a second sealed testing space.

[0009] In another example thereof, the testing lifting/lowering means comprises at least two lifting/lowering drive assemblies, each lifting/lowering drive assembly cooperating with one testing cover of the at least two testing covers. In a variation thereof, the lifting/lowering drive assembly comprises a lifting/lowering drive electric motor, a transmission rod and two lifting/lowering conveyor chains; the lifting/lowering drive electric motor may be connected to the transmission rod, and the two lifting/lowering conveyor chains are connected at one end to the transmission rod and at another end to the testing cover.

[0010] In a further example thereof, the loading means comprises a pusher and a translation driving mechanism; the translation driving mechanism may be connected to the pusher and drives the pusher to approach the testing workstation or move away from the testing workstation. In a variation thereof, the translation driving mechanism comprises a translation electric motor, a driving wheel connected to the translation electric motor, a driven wheel, and a translation conveyor chain connecting the driving wheel with the driven wheel; and the translation conveyor chain may be connected to the pusher

[0011] In yet another example thereof, the loading conveying platform and the unloading conveying platform are roller conveying platforms.

[0012] In still another example thereof, the loading lifting/lowering means and the unloading lifting/lowering means are scissor hydraulic lifting/lowering means. [0013] In yet still another example thereof, guiding means are provided at two sides of the loading conveying platform. In a variation thereof, the guiding means are guiding rollers.

[0014] In yet a further example thereof, the gas leakage testing device further comprises an air compressor connected to the electric control box and the at least one gas storage tank.

[0015] In a further exemplary embodiment of the present disclosure, a gas leakage testing device for an inflatable product may be provided. The gas leakage testing device may comprise: at least one gas storage tank, for storing gas; at least one inflating means, connected to the at least one gas storage tank and used to inflate the inflatable product; a tester, for testing whether the inflatable product has gas leakage; an electric control box, connected to the tester and configured to control testing work of the tester; and two testing lines. Both testing lines being connected to the tester. Each testing line comprising a loading workstation, a testing workstation and an unloading workstation arranged in sequence. The loading workstation may be provided with a loading conveying platform, and a loading means for pushing the inflatable product to move from the loading workstation toward the testing workstation may be provided on the loading conveying platform. The unloading workstation may be provided with an unloading conveying platform. The testing workstation may be provided with a testing frame. A testing cover may be provided in the testing frame. The testing cover may be connected to the tester. A testing lifting/lowering means may be provided on the testing frame, and the testing lifting/lowering means may be connected to the testing cover and configured to control the up/down movement of the testing cover in the testing frame.

[0016] In an example thereof, one testing cover may be provided in the testing frame for each testing line.

[0017] In another example thereof, two or more testing covers are provided in the testing frame for each testing line; correspondingly, a loading lifting/lowering means for driving the loading conveying platform to ascend or descend may be connected below the loading conveying platform, and an unloading lifting/lowering means for driving the unloading conveying platform to ascend or descend may be connected below the unloading conveying platform. In a variation thereof, a bottom plate may be also provided in the testing frame, being arranged below the two or more testing covers; a first testing cover of the two or more testing covers close to the bottom plate mates with the bottom plate to form a first sealed testing space, and a second testing cover of the two or more testing covers mates with an upper end face of the first testing cover therebelow to form a second sealed testing space. In a further variation thereof, the testing lifting/lowering means comprises at least one lifting/lowering drive assembly, each lifting/lowering drive assembly cooperating with the testing cover.

[0018] In yet another example thereof, the lifting/lowering drive assembly comprises a lifting/lowering drive electric motor, a transmission rod and two lifting/lowering conveyor chains; the lifting/lowering drive electric motor may be connected to the transmission rod, and the two lifting/lowering conveyor chains are connected at one end to the transmission rod and at another end to the testing cover.

[0019] In still another example thereof, the loading means comprises a pusher and a translation driving mechanism; the translation driving mechanism may be connected to the pusher, and drives the pusher to approach the testing workstation or move away from the testing workstation. In a variation thereof, the translation driving mechanism comprises a translation electric motor, a driving wheel connected to the translation electric motor, a driven wheel, and a translation conveyor chain connecting the driving wheel with the driven wheel; and the translation conveyor chain may be connected to the pusher.

[0020] In yet still another example thereof, the loading conveying platform and the unloading conveying platform are roller conveying platforms.

[0021] In a further example thereof, the loading lifting/lowering means and the unloading lifting/lowering means are scissor hydraulic lifting/lowering means. [0022] In yet a further example thereof, guiding means are provided at two sides of the loading conveying platform. In a variation thereof, the guiding means are guiding rollers. [0023] In still a further example thereof, the gas leakage testing device further comprises an air compressor connected to the electric control box and the gas storage tank.

[0024] In still a further exemplary embodiment of the present disclosure, a gas leakage testing device for an inflatable product may be provided. The gas leakage testing device may comprise at least one gas storage tank, for storing gas; at least one inflation head, connected to the at least one gas storage tank and used to inflate the inflatable product; a tester, for testing whether the inflatable product has a gas leakage; an electric control box, connected to the tester and configured to control a testing work of the tester; and at least one testing line. The at least one testing line comprising at least one loading workstation, a testing workstation and at least one unloading workstation arranged in sequence. The testing workstation having a testing frame and a plurality of testing covers which bound a plurality of sealed testing spaces of the testing workstation.

[0025] In an example thereof, a first sealed testing space of the plurality of testing spaces may be bound by a first testing cover of the plurality testing covers and a second sealed testing space of the plurality of testing spaces may be bound by a second testing cover of the plurality testing covers. In a variation thereof, the second testing cover and the second sealed testing space are vertically above the first testing cover and the first sealed testing space. In another variation thereof, the second testing cover and the second sealed testing space are positioned side-by- side with the first testing cover and the first sealed testing space. In still a further variation thereof, the second sealed testing space and the first sealed testing space are positioned between at least one loading conveyor platform of the at least one loading workstation and at least one unloading conveyor platform of the at least one unloading workstation.

[0026] Additional features and advantages of the present disclosure will become apparent to those skilled in the art upon consideration of the following detailed description of the illustrative embodiment exemplifying the best mode of carrying out the disclosure as presently perceived. Brief description of the drawings

[0027] The foregoing aspects and many of the intended advantages of this disclosure will become more readily appreciated as the same becomes better understood by reference to the following detailed description when taken in conjunction with the accompanying drawings.

[0028] Fig. 1 is a structural schematic drawing of an exemplary embodiment of a gas leakage testing device of the present disclosure;

[0029] Fig. 2 is a top view of Fig. 1;

[0030] Fig. 3 is a structural schematic drawing of a testing workstation of Fig. 1;

[0031] Fig. 4 is a structural schematic drawing of a loading workstation of Fig. 1;

[0032] Figs. 5-1 and 5-2 are schematic diagrams of loading and testing of the first level of Fig. 1;

[0033] Figs. 5-3 and 5-4 are schematic diagrams of loading and testing of the second level of Fig. 1;

[0034] Figs. 5-5 and 5-6 are schematic diagrams of loading and unloading of the first level of Fig. 1;

[0035] Figs. 5-7 to 5-9 are schematic diagrams of loading and unloading of the second level of Fig. 1;

[0036] Fig. 6 is a structural schematic drawing of another exemplary embodiment gas leakage testing device of the present disclosure;

[0037] Fig. 7 is a top view of Fig. 6;

[0038] Figs. 8-1 and 8-2 are schematic diagrams of loading of the first levels of two test lines of Fig. 6;

[0039] Fig. 8-3 is a schematic diagram of loading of the second levels of the two test lines (the inflatable product in the first testing cover being tested) of Fig. 6;

[0040] Fig. 8-4 is a schematic diagram of loading and unloading of the first level of the first testing line (the inflatable product in the third testing cover being tested) of Fig. 6; [0041] Fig. 8-5 is a schematic diagram of loading and unloading of the first level of the second testing line (the inflatable product in the second testing cover being tested) of Fig. 6;

[0042] Fig. 8-6 is a schematic diagram of loading and unloading of the second level of the first testing line (the inflatable product in the fourth testing cover being tested) of Fig. 6; and

[0043] Figs. 8-7 and 8-8 are schematic diagrams of loading and unloading of the second level of the second testing line (the inflatable product in the first testing cover being tested) of Fig. 6.

[0044] Corresponding reference characters indicate corresponding parts throughout the several views. Although the drawings represent embodiments of various features and components according to the present disclosure, the drawings are not necessarily to scale and certain features may be exaggerated in order to better illustrate and explain the present disclosure. The exemplifications set out herein illustrate embodiments of the disclosure, and such exemplifications are not to be construed as limiting the scope of the disclosure in any manner.

Detailed Description

[0045] For the purposes of promoting an understanding of the principals of the disclosure, reference will now be made to the embodiments illustrated in the drawings, which are described below. The embodiments disclosed below are not intended to be exhaustive or limit the disclosure to the precise form disclosed in the following detailed description. Rather, the embodiments are chosen and described so that others skilled in the art may utilize their teachings. It will be understood that no limitation of the scope of the disclosure is thereby intended. The disclosure includes any alterations and further modifications in the illustrative devices and described methods and further applications of the principles of the disclosure which would normally occur to one skilled in the art to which the disclosure relates.

[0046] In the description, it should be noted that the terms upper, lower, inner, outer, top/bottom, etc. indicating the orientation or positional relationship based on the orientation shown in the drawings are only for the convenience of simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0047] The terms “couples”, “coupled”, “coupler”, and variations thereof are used to include both arrangements wherein two or more components are in direct physical contact and arrangements wherein the two or more components are not in direct contact with each other (e.g., the components are “coupled” via at least a third component, but yet still cooperates or interact with each other).

[0048] The present disclosure is related to the following applications which are incorporated by reference herein.

[0049] Exemplary methods of testing for air leakage from an inflatable product with test covers are provided in PCT Patent Application No. (unknown), filed same day as the present application, titled A GAS LEAKAGE DETECTION METHOD FOR AN INFLATABLE PRODUCT, docket IRC-0144-01 -WO and Chinese Application No.: 202110171163.6, filed February 8, 2021, the entire disclosures of which are expressly incorporated by reference herein.

[0050] Exemplary gas leakage testing devices are provided in PCT Patent Application No. (unknown), filed same day as the present application, titled FEEDING MECHANISM, FEEDING AND DISCHARGE STRUCTURE FOR PERFORMANCE DETECTION DEVICE FOR INFLATABLE PRODUCT, docket IRC-0149-01-WO and in Chinese Application No.: 202123270682.2, filed Dec. 23, 2021, the entire disclosures of which are incorporated by reference herein. [0051] Exemplary test cover replacement structures for swapping out test covers in a gas leakage detection device having at least a test frame and a loading workstation are provided in PCT Patent Application No. (unknown), filed same day as the present application, titled A TEST COVER REPLACEMENT STRUCTURE FOR AN AIR LEAKAGE DETECTION DEVICE OF INFLATABLE PRODUCTS, docket IRC-0146-01 -WO and in Chinese Utility Model Application No.: 202120371838.7 filed February 8, 2021, the entire disclosures of which are incorporated by reference herein.

[0052] Exemplary test covers are provided in PCT Patent Application No. (unknown), filed same day as the present application, titled AIR LEAKAGE DETECTION STRUCTURE AND TEST COVER STRUCTURE FOR INFLATABLE PRODUCT, docket IRC-0147-01 -WO and Chinese Utility Model Application Number: 202120367781.3, filed February 8, 2021, the entire disclosures of which is expressly incorporated by reference herein.

[0053] Exemplary sealing joint structures for sealing a connection between a gas source and an inflatable product for inflation or deflation of the inflatable product are provided in PCT Patent Application No. (unknown), filed same day as the present application, titled A SEALING JOINT STRUCTURE FOR INFLATION AND DEFLATION, docket IRC-0148-01-WO and Chinese Utility Model Application Number: 202120371730.8, filed February 8, 2021, the entire disclosures of which is expressly incorporated by reference herein.

[0054] Gas leakage testing devices for an inflatable product are disclosed. Advantages, among others of the disclosed gas leaking testing devices include the reduction in the gas leakage testing time by reducing or avoiding the waiting time in gas leakage testing, thereby increasing the gas leakage testing efficiency. Two illustrated embodiments are provided below for the purpose of describing the content of exemplary gas leakage testing devices. Additional exemplary embodiments including portions of the illustrated embodiments are contemplated.

[0055] Embodiment 1

[0056] Referring to Figs. 1-4, the gas leakage testing device in this embodiment is provided with a testing line 600. The testing line 600 cooperating with a gas storage tank 100, an inflating means 200, a tester 300 and an electric control box 400. The gas storage tank 100 is used for storing a gas. The inflating means 200 is connected to the gas storage tank 100, and an inflatable product 700 can be inflated with gas from the gas storage tank 100 by means of the inflating means 200. The inflating means 200 may also be connected to the electric control box 400, with the electric control box 400 controlling the inflating operation of the inflating means 200. In this embodiment, the inflating means 200 is an inflation head. Exemplary inflation heads may be sealing joint structures which seal a connection between a gas source and an inflatable product for inflation or deflation of the inflatable product are provided in PCT Patent Application No. (unknown), filed same day as the present application, titled A SEALING JOINT STRUCTURE FOR INFLATION AND DEFLATION, docket IRC-0148-01-WO and Chinese Utility Model Application Number: 202120371730.8, filed February 8, 2021, the entire disclosures of which is expressly incorporated by reference herein. The tester 300 is connected to the electric control box 400, and tests whether the inflatable product 700 on the testing line 600 is leaking gas under the control of the electric control box 400. In this embodiment, the tester 300 may be a pressure tester 300, a gas mass spectrometer or another type of tester 300. When a gas mass spectrometer is used, the gas in the gas storage tank 100 must contain a gas that can be identified by the gas mass spectrometer.

[0057] In this embodiment, the testing line 600 comprises a loading workstation 610, a testing workstation 620 and an unloading workstation 630, which are arranged in sequence. Referring to FIG. 2, the loading workstation 610 is provided with a loading conveying platform 611; a loading means 612 for pushing the inflatable product 700 to move from the loading workstation 610 toward the testing workstation 620 is provided on the loading conveying platform 611; and a loading lifting/lowering means 613 (see Figs. 5-1 - 5-9) for driving the loading conveying platform 611 to ascend or descend is connected below the loading conveying platform 611. The unloading workstation 630 is provided with an unloading conveying platform 631, and an unloading lifting/lowering means 632 (see Figs. 5-1 - 5-9) for driving the unloading conveying platform 631 to ascend or descend is connected below the unloading conveying platform 631. The testing workstation 620 is provided with a testing frame 621; at least two testing covers arranged in sequence from bottom to top are provided in the testing frame 621, the testing covers being connected to the tester 300; and a testing lifting/lowering means 623 is provided on the testing frame 621, the testing lifting/lowering means 623 being connected to the testing covers, and being configured to control the up/down movement of the testing covers in the testing frame 621. The loading means, the loading lifting/lowering means, the unloading lifting/lowering means and the testing lifting/lowering means in the testing line are all connected to the electric control box, and controlled by the electric control box in a coordinated fashion.

[0058] The loading conveying platform 611 is used to carry the inflatable product 700, such that the inflatable product 700 can move on the loading conveying platform 611 underthe action of the loading means 612. In order to reduce friction when the inflatable product 700 is moving, the loading conveying platform 611 is a roller conveying platform in this embodiment. In this embodiment, the loading means 612 comprises a pusher 6121 and a translation driving mechanism 6122. The translation driving mechanism 6122 is an assembly connected to the pusher 6121 and drives the pusher 6121 to approach the testing workstation 620 or move away from the testing workstation 620. That is to say, underthe action of the translation driving mechanism 6122, the pusher 6121 can push the inflatable product 700 placed on the loading conveying platform 611, to deliver it into the testing workstation 620 to undergo gas leakage testing. The translation driving mechanism 6122 may be implemented using a gas cylinder, an oil cylinder or an electric motor driving structure, etc. In this embodiment, the translation driving mechanism 6122 is implemented using an electric motor driving structure, comprising a translation electric motor 61221 (see Fig. 4), a driving wheel connected to the translation electric motor 61221, a driven wheel 61222, and a translation conveyor chain 61223 connecting the driving wheel with the driven wheel 61222. The translation conveyor chain 61223 is connected to the pusher 6121. Of course, besides using the pusher 6121 to push the inflatable product 700 to achieve loading, it is also possible to use a conveyor chain or conveying rollers for loading. If such a method is used for loading, the loading means 612 further comprises an electric motor for driving the conveyor chain or conveying rollers to rotate, in which case the conveyor chain or conveying rollers of the loading means 612 become(s) the loading conveying platform 611. [0059] To enable the inflatable product 700 to enter the testing workstation 620 accurately, guiding means 614 may be arranged at two side edges of the loading conveying platform 611. The guiding means 614 being able to avoid positional drift of the inflatable product 700 during loading. In this embodiment, the guiding means 614 are guiding rollers; specifically, the guiding rollers are rotatably arranged at the side edges of the loading conveying platform 611.

[0060] The unloading conveying platform 631 acts in the same way as the loading conveying platform 611. In this embodiment, the unloading conveying platform 631 is also a roller conveying platform. However, no unloading means is provided in the unloading workstation 630; this is because, upon completion of gas leakage testing, the newly loaded inflatable product 700 will push the fully-tested inflatable product 700 toward the unloading workstation 630, thus completing the work of unloading. Furthermore, in this embodiment, the loading lifting/lowering means 613 and unloading lifting/lowering means 632 are scissor hydraulic lifts. [0061] Two or more testing covers are provided on the testing workstation 620, each testing cover being able to test one inflatable product 700. Thus, gas leakage testing of multiple inflatable products 700 can be achieved on the testing workstation 620. Two testing covers are provided on the testing workstation 620 in this embodiment, being a first testing cover 6221 and a second testing cover 6222 sequentially from bottom to top. The first testing cover 6221 corresponds to a first testing workstation 620. The second testing cover 6222 corresponds to a second testing workstation 620. Referring to Fig. 3, a bottom plate 6211 (baseplate) is provided in the testing frame 621. The bottom plate 6211 being arranged below the first testing cover 6221. The first testing cover 6221 mates with the bottom plate 6211 to form a sealed testing space. The second testing cover 6222 mates with an upper end face of the first testing cover 6221 to form a sealed testing space. In embodiments, the second testing cover 6222 mates with a second baseplate positioned above the first testing cover by a height to still permit movement of the first testing cover during operation.

[0062] The testing lifting/lowering means 623 comprises at least two testing lifting/lowering means 623. Each testing lifting/lowering means 623 cooperating with one testing cover. In this embodiment, a total of two testing lifting/lowering means 623 correspond to the first testing cover 6221 and the second testing cover 6222, respectively. The testing lifting/lowering means 623 may be implemented using a gas cylinder, an oil cylinder or an electric motor driving structure. In this embodiment, the testing lifting/lowering means 623 is implemented using electric motor drive, and comprises a lifting/lowering drive electric motor 62311, a transmission rod 62312 and two lifting/lowering conveyor chains 62313. The lifting/lowering drive electric motor 62311 being connected to the transmission rod 62312. The two lifting/lowering conveyor chains 62313 are connected at one end to the transmission rod 62312 and at another end to the testing cover. The lifting/lowering drive electric motor 62311 drives the transmission rod 62312 to rotate, and the transmission rod 62312 drives belts to move up and down, thus driving the test cover to move up and down.

[0063] In order to recover gas, the testing device of the present invention further comprises an air compressor connected to the gas storage tank 100. When the inflatable product 700 has completed gas leakage testing, the gas in the inflatable product 700 is recovered into the gas storage tank 100 by means of the air compressor. In embodiments, the inflation heads may be sealing joint structures which seal a connection between a gas source and an inflatable product for inflation or deflation of the inflatable product are provided in PCT Patent Application No. (unknown), filed same day as the present application, titled A SEALING JOINT STRUCTURE FOR INFLATION AND DEFLATION, docket IRC-0148-01-WO and Chinese Utility Model Application Number: 202120371730.8, filed February 8, 2021, the entire disclosures of which is expressly incorporated by reference herein.

[0064] The operating principles of the gas leakage testing device in this embodiment may be as follows. Initially, the first testing cover 6221 and second testing cover 6222 move upward under the action of the testing lifting/lowering means 623, with a space for placing the inflatable product 700 being left between the first testing cover 6221 and the bottom plate 6211. [0065] First level loading and testing: The operator of the loading workstation 610 inflates the inflatable product 700 to be tested with gas from the gas storage tank 100 by means of the inflating means 200, and when inflation is complete, places the inflatable product 700 on the loading conveying platform 611. The loading means 612 then conveys the inflatable product 700 to be tested on the loading conveying platform 611 onto the bottom plate 6211 of the testing workstation 620. The first testing cover 6221 descends and mates with the bottom plate 6211 to form a sealed testing space. The electric control box 400 switches on the tester 300 to perform gas leakage testing of the inflatable product 700 in the first testing cover 6221.

[0066] Second level loading and testing: While the tester 300 is testing the inflatable product 700 in the first testing cover 6221, the operator of the loading workstation 610 places the next inflatable product 700 to be tested on the loading conveying platform 611. The loading lifting/lowering means 613 switches on, and the loading conveying platform 611 ascends to a position above the first testing cover 6221. The loading means 612 then delivers the inflatable product 700 onto the first testing cover 6221 of the testing workstation 620. When loading is complete the loading lifting/lowering means 613 descends. At the same time, the second testing cover 6222 descends and mates with the upper end face of the first testing cover 6221 to form an airtight testing space, and the electric control box 400 controls the tester 300, such that when testing of the first testing cover 6221 is complete, the inflatable product 700 in the second testing cover 6222 is tested immediately.

[0067] When testing of the first testing cover 6221 is complete, the electric control box 400 controls the tester 300 to test gas leakage from the inflatable product 700 in the second testing cover 6222. At the same time, the electric control box 400 controls the testing lifting/lowering means 623 to lift the first testing cover 6221 and second testing cover 6222 together, to perform loading and unloading of the first level: the operator of the loading workstation 610 places the next inflatable product 700 to be tested on the loading conveying platform 611, and the loading means 612 pushes the inflatable product 700 to be tested on the loading conveying platform 611 toward the testing workstation 620. While moving toward the testing workstation 620, this inflatable product 700 to be tested will push the fully-tested inflatable product 700 to move toward the unloading workstation 630. When the inflatable product 700 to be tested has been fully delivered into the testing workstation 620, the first testing cover 6221 and second testing cover 6222 move down together, and the first testing cover 6221 waits for the tester 300 to perform gas leakage testing. The operator of the unloading workstation 630 removes the fully-tested inflatable product 700, and then recovers the gas therefrom into the gas storage tank 100 by means of the air compressor.

[0068] When testing of the second testing cover 6222 is complete, the electric control box 400 controls the tester 300 to test the first testing cover 6221, at the same time controlling the second testing cover 6222 to move up, and begins loading and unloading of the second level. The operator of the loading workstation 610 places the next inflatable product 700 to be tested on the loading conveying platform 611. The loading lifting/lowering means 613 and the unloading lifting/lowering means 632 ascend and the loading conveying platform 611 and unloading conveying platform 631 ascend to the second level. The loading means 612 then pushes the inflatable product 700 to be tested on the loading conveying platform 611 toward the testing workstation 620. While moving toward the testing workstation 620, the inflatable product 700 to be tested will push the fully-tested inflatable product 700 to move toward the unloading workstation 630. When the inflatable product 700 to be tested has been fully delivered into the testing workstation 620, the second testing cover 6222 moves down, and the second testing cover 6222 waits for the tester 300 to perform gas leakage testing. At the same time, the loading lifting/lowering means 613 and unloading lifting/lowering means 632 descend and the loading conveying platform 611 and unloading conveying platform 631 descend to the first level. The operator of the unloading workstation 630 removes the fully-tested inflatable product 700, and then recovers the gas therefrom into the gas storage tank 100 by means of the air compressor.

[0069] The above actions are performed sequentially in a cycle, until the work of gas leakage testing of all of the inflatable products 700 ends. [0070] Embodiment 2

[0071] The concept of embodiment 2 is the same as that of embodiment 1.

The difference is that the gas leakage testing device in embodiment 2 comprises two testing lines 600. Specifically, the two testing lines 600 cooperate with a gas storage tank 100, an inflating means 200, a tester 300 and an electric control box 400. Furthermore, in this embodiment, each testing line 600 comprises a loading workstation 610, a testing workstation 620 and an unloading workstation 630, wherein the testing workstation 620 may be provided with one or two or more testing covers. When the testing workstation 620 is provided with two or more testing covers, the loading workstation 610, testing workstation 620 and unloading workstation 630 of each testing line 600 have the same structure as in embodiment 1. When the testing workstation 620 is provided with one testing cover, the loading workstation 610 and unloading workstation 630 do not have the loading lifting/lowering means 613 and unloading lifting/lowering means 632; the other parts are the same as in embodiment 1.

[0072] In this embodiment, the two testing lines 600 are a first testing line 601 and a second testing line 602 respectively. A first testing cover 6221 and a second testing cover 6222 are provided on the testing workstation 620 of the first testing line 601 and a third testing cover 6223 and a fourth testing cover 6224 are provided on the testing workstation 620 of the second testing line 602.

[0073] In this embodiment, gas leakage testing has the following operating principles. In the two production lines, the operator of the loading workstation 610 need only be responsible for the operations of inflating the inflatable products 700 and placing the inflatable products 700 on the loading conveying platform 611, The operator of the unloading workstation 630 need only be responsible for removing the fully-tested inflatable products 700 from the unloading conveying platform 631 and recovering gas from these inflatable products 700 into the gas storage tank 100 by means of the air compressor.

[0074] The controller will control the loading means 612 to perform automatic loading in cooperation with the loading lifting/lowering means 613, at the same time controlling the unloading lifting/lowering means 632 to perform unloading. The tester 300 performs gas leakage testing of the inflatable products 700 in the first testing cover 6221, the third testing cover 6223, the second testing cover 6222 and the fourth testing cover 6224 sequentially in a cycle, also under the control of the controller.

[0075] Firstly, the controller controls loading of the first level of the first testing line 601 and second testing line 602. Inflatable products 700 move onto the bottom plates 6211 of the testing workstations 620, and the testing lifting/lowering means 623 control the first testing cover 6221 and third testing cover 6223 to descend, cooperating with the bottom plates 6211 of the first testing line 601 and the second testing line 602 respectively to form sealed testing spaces. The controller then controls the tester 300 to perform gas leakage testing of the inflatable product 700 in the first testing cover 6221. At the same time, the controller also controls the loading lifting/lowering means 613 of the first testing line 601 and second testing line 602 to ascend to the second level, to perform loading of the second level.

[0076] When the inflatable product 700 in the first testing cover 6221 has completed gas leakage testing (which might be during loading of the second level or after loading of the second level is complete), the tester 300 performs gas leakage testing of the inflatable product 700 in the third testing cover 6223. The controller controls the loading means 612 and testing lifting/lowering means 623 of the first testing line 601 to perform loading and unloading of the first level of the first testing line 601.

[0077] When the inflatable product 700 in the third testing cover 6223 has completed gas leakage testing, the tester 300 performs gas leakage testing of the inflatable product 700 in the second testing cover 6222. At the same time, the controller may control the loading means 612 and testing lifting/lowering means 623 of the second testing line 602 to perform loading and unloading of the first level of the second testing line 602.

[0078] When the inflatable product 700 in the second testing cover 6222 has completed gas leakage testing, the tester 300 performs gas leakage testing of the inflatable product 700 in the fourth testing cover 6224. At the same time, the controller controls the loading means 612, the loading lifting/lowering means 613, the unloading lifting/lowering means 632 and the testing lifting/lowering means 623 of the first testing line 601 to perform loading and unloading of the second level of the first testing line 601.

[0079] When the inflatable product 700 in the fourth testing cover 6224 has completed gas leakage testing, the tester 300 performs gas leakage testing of the inflatable product 700 in the first testing cover 6221. At the same time, the controller controls the loading means 612, the loading lifting/lowering means 613, the unloading lifting/lowering means 632 and the testing lifting/lowering means 623 of the second testing line 602 to perform loading and unloading of the second level of the second testing line 602.

[0080] The above operations are performed in a cycle, until inflation testing of all of the inflatable products 700 is complete.

[0081] The testing device in both embodiment 1 and embodiment 2 need only have operators arranged at the loading workstation 610 and the unloading workstation 630. The operator of the loading workstation 610 need only be responsible for the operations of inflating the inflatable products 700 and placing the inflatable products 700 on the loading conveying platform 611. While the operator of the unloading workstation 630 need only be responsible for removing the fully-tested inflatable products 700 from the unloading conveying platform 631 and recovering gas from these inflatable products 700 into the gas storage tank 100 by means of the air compressor. Thus, production line loading, testing and unloading can all be automated, thereby reducing the labor cost of gas leakage testing of the inflatable products 700. Furthermore, because multiple testing covers are provided on each testing line 600 or two testing lines 600 are provided, the testing device can carry multiple inflatable products 700 at the same time, so that the tester 300 can be responsible for gas leakage testing of multiple inflatable products 700. When the tester 300 is testing one inflatable product 700, the loading workstation 610 and unloading workstation 630 can perform operations to load and unload the other inflatable products 700. Thus, once the tester 300 has completed gas leakage testing of one inflatable product 700, it does not need to wait, and can perform gas leakage testing of the next inflatable product 700 directly. An advantage, among others, of the disclosed gas testing devices is the reduction in the waiting time in gas leakage testing, thereby increasing the gas leakage testing efficiency.

[0082] For example, not taking into account the inflation time of the inflatable product 700 (assuming the inflatable product 700 is already inflated), the loading time is 15 seconds, and the gas leakage testing time is 30 seconds. Thus, in the case of an existing gas leakage testing device, after testing one inflatable product 700, the tester 300 must wait at least a further 15 seconds before being able to begin gas leakage testing of the next inflatable product 700. If the gas leakage testing devices of the present disclosure are used, while the tester 300 is performing gas leakage testing of one inflatable product 700, the next inflatable product 700 has already been loaded, so the tester can perform gas leakage testing of the next inflatable product 700 directly upon completion of gas leakage testing of one inflatable product 700, without needing to wait. If 1000 inflatable products 700 need to undergo gas leakage testing, then at least 45000 seconds will be required in the case of an existing gas leakage testing device, whereas only 30015 seconds will be required if the gas leakage testing device of the present invention is used. As can be seen, for 1000 inflatable products 700, nearly 15000 seconds (250 minutes) are saved by using the gas leakage testing devices of the present disclosure.

[0083] Examples

[0084] Example 1 : A gas leakage testing device for an inflatable product is provided. The gas leakage testing device comprising: at least one gas storage tank, for storing gas; at least one inflating means, connected to the at least one gas storage tank and used to inflate the inflatable product; a tester, for testing whether the inflatable product has a gas leakage; an electric control box, connected to the tester and configured to control a testing work of the tester; and a testing line. The testing line comprising a loading workstation, a testing workstation and an unloading workstation arranged in sequence. The loading workstation is provided with a loading conveying platform, a loading means for pushing the inflatable product to move from the loading workstation toward the testing workstation is provided on the loading conveying platform, and a loading lifting/lowering means for driving the loading conveying platform to ascend or descend is connected below the loading conveying platform. The unloading workstation is provided with an unloading conveying platform, and an unloading lifting/lowering means for driving the unloading conveying platform to ascend or descend is connected below the unloading conveying platform. The testing workstation is provided with a testing frame and at least two testing covers arranged in sequence from bottom to top are provided in the testing frame. The testing covers are connected to the tester. A testing lifting/lowering means is provided on the testing frame and is connected to the testing covers and configured to control an up/down movement of the testing covers in the testing frame. The loading means, the loading lifting/lowering means, the unloading lifting/lowering means and the testing lifting/lowering means are connected to the electric control box.

[0085] Example 2: The gas leakage testing device for an inflatable product of Example 1, wherein: a bottom plate is also provided in the testing frame, being arranged below the testing covers; a first testing cover close to the bottom plate mates with the bottom plate to form a first sealed testing space, and a second testing cover mates with an upper end face of the first testing cover therebelow to form a second sealed testing space.

[0086] Example 3 : The gas leakage testing device for an inflatable product of Example 1, wherein: the testing lifting/lowering means comprises at least two lifting/lowering drive assemblies, each lifting/lowering drive assembly cooperating with one testing cover of the at least two testing covers.

[0087] Example 4: The gas leakage testing device for an inflatable product of Example 3, wherein: the lifting/lowering drive assembly comprises a lifting/lowering drive electric motor, a transmission rod and two lifting/lowering conveyor chains; the lifting/lowering drive electric motor is connected to the transmission rod, and the two lifting/lowering conveyor chains are connected at one end to the transmission rod and at another end to the testing cover. [0088] Example 5 : The gas leakage testing device for an inflatable product of Example 1, wherein: the loading means comprises a pusher and a translation driving mechanism; the translation driving mechanism is connected to the pusher and drives the pusher to approach the testing workstation or move away from the testing workstation.

[0089] Example 6: The gas leakage testing device for an inflatable product of Example 5, wherein: the translation driving mechanism comprises a translation electric motor, a driving wheel connected to the translation electric motor, a driven wheel, and a translation conveyor chain connecting the driving wheel with the driven wheel; and the translation conveyor chain is connected to the pusher.

[0090] Example 7 : The gas leakage testing device for an inflatable product of Example 1, wherein: the loading conveying platform and the unloading conveying platform are roller conveying platforms.

[0091] Example 8: The gas leakage testing device for an inflatable product of Example 1, wherein: the loading lifting/lowering means and the unloading lifting/lowering means are scissor hydraulic lifting/lowering means.

[0092] Example 9: The gas leakage testing device for an inflatable product of Example 1, wherein: guiding means are provided at two sides of the loading conveying platform.

[0093] Example 10: The gas leakage testing device for an inflatable product of Example 9, wherein: the guiding means are guiding rollers.

[0094] Example 11 : The gas leakage testing device for an inflatable product of Example 1, wherein: the gas leakage testing device further comprises an air compressor connected to the electric control box and the at least one gas storage tank.

[0095] Example 12: A gas leakage testing device for an inflatable product is provided. The gas leakage testing device comprising: at least one gas storage tank, for storing gas; at least one inflating means, connected to the at least one gas storage tank and used to inflate the inflatable product; a tester, for testing whether the inflatable product has gas leakage; an electric control box, connected to the tester and configured to control testing work of the tester; and two testing lines. Both testing lines being connected to the tester. Each testing line comprising a loading workstation, a testing workstation and an unloading workstation arranged in sequence. The loading workstation is provided with a loading conveying platform, and a loading means for pushing the inflatable product to move from the loading workstation toward the testing workstation is provided on the loading conveying platform. The unloading workstation is provided with an unloading conveying platform. The testing workstation is provided with a testing frame. A testing cover is provided in the testing frame. The testing cover is connected to the tester. A testing lifting/lowering means is provided on the testing frame, and the testing lifting/lowering means is connected to the testing cover and configured to control the up/down movement of the testing cover in the testing frame.

[0096] Example 13: The gas leakage testing device for an inflatable product of Example 12, wherein: one testing cover is provided in the testing frame for each testing line.

[0097] Example 14: The gas leakage testing device for an inflatable product of Example 12, wherein: two or more testing covers are provided in the testing frame for each testing line; correspondingly, a loading lifting/lowering means for driving the loading conveying platform to ascend or descend is connected below the loading conveying platform, and an unloading lifting/lowering means for driving the unloading conveying platform to ascend or descend is connected below the unloading conveying platform.

[0098] Example 15: The gas leakage testing device for an inflatable product of Example 14, wherein: a bottom plate is also provided in the testing frame, being arranged below the two or more testing covers; a first testing cover of the two or more testing covers close to the bottom plate mates with the bottom plate to form a first sealed testing space, and a second testing cover of the two or more testing covers mates with an upper end face of the first testing cover therebelow to form a second sealed testing space.

[0099] Example 16: The gas leakage testing device for an inflatable product a of Examples 13 or 14, wherein: the testing lifting/lowering means comprises at least one lifting/lowering drive assembly, each lifting/lowering drive assembly cooperating with the testing cover.

[00100] Example 17: The gas leakage testing device for an inflatable product of Example 12, wherein: the lifting/lowering drive assembly comprises a lifting/lowering drive electric motor, a transmission rod and two lifting/lowering conveyor chains; the lifting/lowering drive electric motor is connected to the transmission rod, and the two lifting/lowering conveyor chains are connected at one end to the transmission rod and at another end to the testing cover.

[00101] Example 18: The gas leakage testing device for an inflatable product of Example 12, wherein: the loading means comprises a pusher and a translation driving mechanism; the translation driving mechanism is connected to the pusher, and drives the pusher to approach the testing workstation or move away from the testing workstation.

[00102] Example 19: The gas leakage testing device for an inflatable product of Example 18, wherein: the translation driving mechanism comprises a translation electric motor, a driving wheel connected to the translation electric motor, a driven wheel, and a translation conveyor chain connecting the driving wheel with the driven wheel; and the translation conveyor chain is connected to the pusher.

[00103] Example 20: The gas leakage testing device for an inflatable product of Example 12, wherein: the loading conveying platform and the unloading conveying platform are roller conveying platforms.

[00104] Example 21 : The gas leakage testing device for an inflatable product of Example 14, wherein: the loading lifting/lowering means and the unloading lifting/lowering means are scissor hydraulic lifting/lowering means. [00105] Example 22: The gas leakage testing device for an inflatable product of Example 12, wherein: guiding means are provided at two sides of the loading conveying platform.

[00106] Example 23: The gas leakage testing device for an inflatable product of Example 22, wherein: the guiding means are guiding rollers. [00107] Example 24: The gas leakage testing device for an inflatable product of Example 12, wherein: the gas leakage testing device further comprises an air compressor connected to the electric control box and the gas storage tank. [00108] Example 25: A gas leakage testing device for an inflatable product is provided. The gas leakage testing device comprising: at least one gas storage tank, for storing gas; at least one inflation head, connected to the at least one gas storage tank and used to inflate the inflatable product; a tester, for testing whether the inflatable product has a gas leakage; an electric control box, connected to the tester and configured to control a testing work of the tester; and at least one testing line. The at least one testing line comprising at least one loading workstation, a testing workstation and at least one unloading workstation arranged in sequence. The testing workstation having a testing frame and a plurality of testing covers which bound a plurality of sealed testing spaces of the testing workstation.

[00109] Example 26: The gas leakage testing device for an inflatable product of Example 25, wherein a first sealed testing space of the plurality of testing spaces is bound by a first testing cover of the plurality testing covers and a second sealed testing space of the plurality of testing spaces is bound by a second testing cover of the plurality testing covers.

[00110] Example 27: The gas leakage testing device for an inflatable product of Example 26, wherein the second testing cover and the second sealed testing space are vertically above the first testing cover and the first sealed testing space.

[00111] Example 28: The gas leakage testing device for an inflatable product of Example 26, wherein the second testing cover and the second sealed testing space are positioned side-by-side with the first testing cover and the first sealed testing space.

[00112] Example 29: The gas leakage testing device for an inflatable product of any of Examples 26-28, wherein the second sealed testing space and the first sealed testing space are positioned between at least one loading conveyor platform of the at least one loading workstation and at least one unloading conveyor platform of the at least one unloading workstation. [00113] Reference numerals used in drawings

[00114] gas storage tank 100

[00115] inflating means 200;

[00116] tester 300;

[00117] electric control box 400;

[00118] air compressor 500;

[00119] testing line 600

[00120] first testing line 601

[00121] second testing line 602

[00122] loading workstation 610

[00123] loading conveying platform 611

[00124] loading means 612

[00125] pusher 6121

[00126] translation driving mechanism 6122

[00127] translation electric motor 61221

[00128] driven wheel 61222

[00129] translation conveyor chain 61223

[00130] loading lifting/lowering means 613

[00131] guiding means 614

[00132] testing workstation 620

[00133] testing frame 621

[00134] bottom plate 6211

[00135] first testing cover 6221

[00136] second testing cover 6222

[00137] third testing cover 6223

[00138] fourth testing cover 6224

[00139] testing lifting/lowering means 623

[00140] lifting/lowering drive assembly 6231

[00141] lifting/lowering drive electric motor 62311

[00142] transmission rod 62312

[00143] lifting/lowering conveyor chain 62313 [00144] unloading workstation 630

[00145] unloading conveying platform 631

[00146] unloading lifting/lowering means 632;

[00147] inflatable product 700.

[00148] It will be apparent to those skilled in the art that various modifications and variation can be made in the present disclosure without departing from the spirit or scope of the disclosure. Thus, it is intended that the present disclosure cover the modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalents.

Claims

1. A gas leakage testing device for an inflatable product, comprising at least one gas storage tank, for storing gas; at least one inflating means, connected to the at least one gas storage tank and used to inflate the inflatable product; a tester, for testing whether the inflatable product has a gas leakage; an electric control box, connected to the tester and configured to control a testing work of the tester; a testing line, comprising a loading workstation, a testing workstation and an unloading workstation arranged in sequence; the loading workstation is provided with a loading conveying platform, a loading means for pushing the inflatable product to move from the loading workstation toward the testing workstation is provided on the loading conveying platform, and a loading lifting/lowering means for driving the loading conveying platform to ascend or descend is connected below the loading conveying platform; the unloading workstation is provided with an unloading conveying platform, and an unloading lifting/lowering means for driving the unloading conveying platform to ascend or descend is connected below the unloading conveying platform; the testing workstation is provided with a testing frame, at least two testing covers arranged in sequence from bottom to top are provided in the testing frame, the testing covers are connected to the tester, a testing lifting/lowering means is provided on the testing frame, and the testing lifting/lowering means is connected to the testing covers and configured to control an up/down movement of the testing covers in the testing frame; the loading means, the loading lifting/lowering means, the unloading lifting/lowering means and the testing lifting/lowering means are connected to the electric control box.

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2. The gas leakage testing device for an inflatable product as claimed in claim 1, wherein: a bottom plate is also provided in the testing frame, being arranged below the testing covers; a first testing cover close to the bottom plate mates with the bottom plate to form a first sealed testing space, and a second testing cover mates with an upper end face of the first testing cover therebelow to form a second sealed testing space.

3. The gas leakage testing device for an inflatable product as claimed in claim 1, wherein: the testing lifting/lowering means comprises at least two lifting/lowering drive assemblies, each lifting/lowering drive assembly cooperating with one testing cover of the at least two testing covers.

4. The gas leakage testing device for an inflatable product as claimed in claim 3, wherein: the lifting/lowering drive assembly comprises a lifting/lowering drive electric motor, a transmission rod and two lifting/lowering conveyor chains; the lifting/lowering drive electric motor is connected to the transmission rod, and the two lifting/lowering conveyor chains are connected at one end to the transmission rod and at another end to the testing cover.

5. The gas leakage testing device for an inflatable product as claimed in claim 1, wherein: the loading means comprises a pusher and a translation driving mechanism; the translation driving mechanism is connected to the pusher and drives the pusher to approach the testing workstation or move away from the testing workstation.

6. The gas leakage testing device for an inflatable product as claimed in claim 5, wherein: the translation driving mechanism comprises a translation electric motor, a driving wheel connected to the translation electric motor, a driven wheel, and a translation conveyor chain connecting the driving wheel with the driven wheel; and the translation conveyor chain is connected to the pusher.

7. The gas leakage testing device for an inflatable product as claimed in claim 1, wherein: the loading conveying platform and the unloading conveying platform are roller conveying platforms.

8. The gas leakage testing device for an inflatable product as claimed in claim 1, wherein: the loading lifting/lowering means and the unloading lifting/lowering means are scissor hydraulic lifting/lowering means.

9. The gas leakage testing device for an inflatable product as claimed in claim 1, wherein: guiding means are provided at two sides of the loading conveying platform.

10. The gas leakage testing device for an inflatable product as claimed in claim 9, wherein: the guiding means are guiding rollers.

11. The gas leakage testing device for an inflatable product as claimed in claim 1, wherein: the gas leakage testing device further comprises an air compressor connected to the electric control box and the at least one gas storage tank.

12. A gas leakage testing device for an inflatable product, comprising at least one gas storage tank, for storing gas; at least one inflating means, connected to the at least one gas storage tank and used to inflate the inflatable product; a tester, for testing whether the inflatable product has gas leakage; an electric control box, connected to the tester and configured to control testing work of the tester; two testing lines, both testing lines being connected to the tester, and each testing line comprising a loading workstation, a testing workstation and an unloading workstation arranged in sequence; the loading workstation is provided with a loading conveying platform, and a loading means for pushing the inflatable product to move from the loading workstation toward the testing workstation is provided on the loading conveying platform; the unloading workstation is provided with an unloading conveying platform; the testing workstation is provided with a testing frame, a testing cover is provided in the testing frame, the testing cover is connected to the tester, a testing lifting/lowering means is provided on the testing frame, and the testing lifting/lowering means is connected to the testing cover and configured to control the up/down movement of the testing cover in the testing frame.

13. The gas leakage testing device for an inflatable product as claimed in claim 12, wherein: one testing cover is provided in the testing frame for each testing line.

14. The gas leakage testing device for an inflatable product as claimed in claim 12, wherein: two or more testing covers are provided in the testing frame for each testing line; correspondingly, a loading lifting/lowering means for driving the loading conveying platform to ascend or descend is connected below the loading conveying platform, and an unloading lifting/lowering means for driving the unloading conveying platform to ascend or descend is connected below the unloading conveying platform.

15. The gas leakage testing device for an inflatable product as claimed in claim 14, wherein: a bottom plate is also provided in the testing frame, being arranged below the two or more testing covers; a first testing cover of the two or more testing covers close to the bottom plate mates with the bottom plate to form a first sealed testing space, and a second testing cover of the two or more testing covers mates with an upper end face of the first testing cover therebelow to form a second sealed testing space.

16. The gas leakage testing device for an inflatable product as claimed in claim 13 or 14, wherein: the testing lifting/lowering means comprises at least one lifting/lowering drive assembly, each lifting/lowering drive assembly cooperating with the testing cover.

17. The gas leakage testing device for an inflatable product as claimed in claim 16, wherein: the lifting/lowering drive assembly comprises a lifting/lowering drive electric motor, a transmission rod and two lifting/lowering conveyor chains; the lifting/lowering drive electric motor is connected to the transmission rod, and the two lifting/lowering conveyor chains are connected at one end to the transmission rod and at another end to the testing cover.

18. The gas leakage testing device for an inflatable product as claimed in claim 12, wherein: the loading means comprises a pusher and a translation driving mechanism; the translation driving mechanism is connected to the pusher, and drives the pusher to approach the testing workstation or move away from the testing workstation.

19. The gas leakage testing device for an inflatable product as claimed in claim 18, wherein: the translation driving mechanism comprises a translation electric motor, a driving wheel connected to the translation electric motor, a driven wheel, and a translation conveyor chain connecting the driving wheel with the driven wheel; and the translation conveyor chain is connected to the pusher.

20. The gas leakage testing device for an inflatable product as claimed in claim 12, wherein: the loading conveying platform and the unloading conveying platform are roller conveying platforms.

21. The gas leakage testing device for an inflatable product as claimed in claim 14, wherein: the loading lifting/lowering means and the unloading lifting/lowering means are scissor hydraulic lifting/lowering means.

22. The gas leakage testing device for an inflatable product as claimed in claim 12, wherein: guiding means are provided at two sides of the loading conveying platform.

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23. The gas leakage testing device for an inflatable product as claimed in claim 22, wherein: the guiding means are guiding rollers.

24. The gas leakage testing device for an inflatable product as claimed in claim 12, wherein: the gas leakage testing device further comprises an air compressor connected to the electric control box and the gas storage tank.

25. A gas leakage testing device for an inflatable product, comprising at least one gas storage tank, for storing gas; at least one inflation head, connected to the at least one gas storage tank and used to inflate the inflatable product; a tester, for testing whether the inflatable product has a gas leakage; an electric control box, connected to the tester and configured to control a testing work of the tester; at least one testing line, comprising at least one loading workstation, a testing workstation and at least one unloading workstation arranged in sequence, the testing workstation having a testing frame and a plurality of testing covers which bound a plurality of sealed testing spaces of the testing workstation.

26. The gas leakage testing device for an inflatable product as claimed in claim 25, wherein a first sealed testing space of the plurality of testing spaces is bound by a first testing cover of the plurality testing covers and a second sealed testing space of the plurality of testing spaces is bound by a second testing cover of the plurality testing covers.

27. The gas leakage testing device for an inflatable product as claimed in claim 26, wherein the second testing cover and the second sealed testing space are vertically above the first testing cover and the first sealed testing space.

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28. The gas leakage testing device for an inflatable product as claimed in claim 26, wherein the second testing cover and the second sealed testing space are positioned side-by-side with the first testing cover and the first sealed testing space.

29. The gas leakage testing device for an inflatable product as claimed in any of claims 26-28, wherein the second sealed testing space and the first sealed testing space are positioned between at least one loading conveyor platform of the at least one loading workstation and at least one unloading conveyor platform of the at least one unloading workstation.

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