Automatic airtightness testing equipment

Abstract

The utility model relates to the technical field of air tightness testing, in particular to automatic air tightness testing equipment, which comprises a testing rack, an air tightness instrument and a plug-in assembly, and is characterized in that the testing rack is provided with a testing platform used for placing a product to be tested; the plug-in assembly is provided with an airtight cover and a plug-in air cylinder, the airtight cover is fixedly connected to the piston end of the plug-in air cylinder, the plug-in air cylinder operates, the airtight cover is driven to move by a certain distance, and the opening side of the airtight cover is in butt joint with and covers the to-be-tested end face of the to-be-tested product; the airtight cover is also provided with a test through hole, and the test through hole and the airtight instrument form a gas path communication state through a pipeline, so that the airtight instrument carries out an airtight test on the to-be-tested end face in the airtight cover. In conclusion, through the arrangement of various automatic structures such as the airtight cover, the plug-in assembly, the jacking and back pushing mechanism and the like, effective sealing and multi-point airtightness testing of the to-be-tested product are realized, the testing efficiency is improved, the cost is reduced, and the adaptability is enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of airtightness testing, and in particular to an automatic airtightness testing device. Background Technology

[0002] With increasingly stringent requirements for industrial production and product quality, airtightness testing has become increasingly important in numerous fields, especially in industries such as automotive, aerospace, electronics, and medical equipment. Ensuring product sealing directly impacts product performance and safety. For example, many devices and components require protection against gas or liquid leakage to guarantee normal operation and extend service life. Therefore, conducting airtightness testing efficiently and accurately has become a major technical challenge in the industry.

[0003] Existing airtightness testing typically relies on manual operation or simple equipment, which has significant shortcomings in the following aspects:

[0004] Low testing efficiency: Traditional airtightness testing often requires independent testing of each hole or component to be tested, which is not only time-consuming but also prone to operational errors, reducing overall testing efficiency.

[0005] High cost: Due to the significant differences in the shape and size of various holes and components, existing equipment typically requires a variety of sizes and models of airtightness testing nozzles. This diverse demand leads to an increase in the number of equipment and accessories, thereby increasing production and maintenance costs.

[0006] Poor adaptability: Existing equipment is poorly adaptable to irregularly shaped holes and parts, making it difficult to perform airtightness tests on complex shapes. Custom-made testing equipment is often required, which further increases costs and time.

[0007] Therefore, it is necessary to propose an automated airtightness testing device to address the shortcomings of existing technologies and promote the development and application of airtightness testing technology. Utility Model Content

[0008] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0009] This utility model provides an automatic airtightness testing device, including a test frame, an airtightness instrument, and an interlocking assembly. The test frame is equipped with a test platform for placing the product to be tested. The airtightness instrument and the interlocking assembly are respectively installed on the test frame. The interlocking assembly is equipped with an airtight cover and an interlocking cylinder. The airtight cover is fixed to the piston end of the interlocking cylinder, causing the interlocking cylinder to rotate and drive the airtight cover to move a certain distance, so that the open side of the airtight cover aligns with and covers the end face of the product to be tested. The airtight cover is also equipped with a test through hole, which is connected to the airtightness instrument through a pipeline to form an air passage, thereby enabling the airtightness instrument to perform an airtightness test on the end face of the product to be tested inside the airtight cover.

[0010] As a further embodiment of this utility model: the mating assembly is further provided with a mating bracket and a track adjustment assembly. The mating bracket is fixedly connected to the test frame. The track adjustment assembly is provided with an adjusting screw, an adjusting handle, an adjusting nut, and an adjusting bracket. The adjusting screw is rotatably connected to the mating bracket. The adjusting handle is fixedly connected to one end of the adjusting screw, thereby rotating the adjusting screw. The adjusting nut is sleeved on the adjusting screw and forms a threaded transmission connection with the adjusting screw. The adjusting bracket is tractively connected to the adjusting nut and is used to install the mating cylinder.

[0011] As a further embodiment of this utility model: the track adjustment assembly is further provided with an adjustment guide rail and an adjustment slider that cooperate with each other to form a linear motion system. The adjustment guide rail is fixedly connected to the mating bracket, and the adjustment slider is fixedly connected to the adjustment bracket, so that the adjustment bracket can perform linear motion through the cooperation of the adjustment slider and the adjustment guide rail.

[0012] As a further embodiment of this utility model: the test platform is provided with a lifting panel, a lifting bracket, a lifting cylinder, a lifting guide shaft, and a lifting bearing. The lifting bracket is fixed to the test frame, and the lifting bearing and the lifting cylinder are respectively fixed to the lifting bracket. One end of the lifting guide shaft is fixed to the lifting panel, and the other end passes through the lifting bearing, thereby forming a linear motion system. The piston end of the lifting cylinder is drivenly connected to the lifting panel.

[0013] As a further embodiment of this utility model, it also includes a back-push assembly, which is provided with a back-push panel, a back-push bracket, a back-push drive component, a back-push guide shaft, and a back-push bearing. The back-push bracket is fixed to the test frame, and the back-push bearing and the back-push drive component are respectively fixed to the back-push bracket. One end of the back-push guide shaft is fixed to the back-push panel, and the other end passes through the back-push bearing, thereby forming a linear motion system. The drive end of the back-push drive component is connected to the back-push panel.

[0014] As a further embodiment of this utility model, it also includes a cantilever assembly and a clamping assembly, wherein the cantilever assembly is mounted on the test frame and the clamping assembly is mounted on the drive end of the cantilever assembly.

[0015] As a further embodiment of this utility model: the clamping assembly includes a clamping bracket, a clamping motor, a first lead screw, a first gripper, a first nut, a second lead screw, a second gripper, and a second nut. Both ends of the clamping bracket are respectively driven to the drive end of the cantilever assembly. The clamping motor is mounted on the clamping bracket. The first lead screw and the second lead screw are rotatably connected to the clamping bracket, with one end of the first lead screw driven to the output shaft of the clamping motor and the other end driven to the second lead screw, thereby driving the first and second lead screws to rotate synchronously. The first gripper is fixed to the first nut, which is sleeved on the first lead screw to form a threaded drive connection. The second gripper is fixed to the second nut, which is sleeved on the second lead screw to form a threaded drive connection. The helical directions of the thread structures of the first and second lead screws are opposite to each other.

[0016] As a further embodiment of this utility model: the clamping assembly is further provided with a clamping guide rail and a plurality of clamping sliders. The clamping guide rail is fixedly connected to the clamping bracket, and the plurality of clamping sliders are respectively fixedly connected to the first clamp and the second clamp. The clamping guide rail and the clamping sliders cooperate with each other to form a linear motion system.

[0017] As a further embodiment of this utility model: the cantilever assembly includes a cantilever bracket, a cantilever guide rail, a cantilever slider, and a cantilever drive component. The cantilever bracket is fixedly connected to the test frame, the cantilever guide rail is fixedly connected to the cantilever bracket, and the cantilever slider is fixedly connected to the clamping bracket and cooperates with the cantilever guide rail to form a linear motion system. The drive end of the cantilever drive component is connected to the clamping bracket, thereby driving the clamping bracket to move linearly along the cantilever guide rail.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] Therefore, this utility model proposes an automated airtightness testing device. Through the incorporation of various automated structures such as an airtight cover, interlocking components, and lifting and back-pushing mechanisms, it achieves effective sealing and multi-point airtightness testing of the product under test, particularly for highly efficient, accurate, and automated testing of products with multiple pores and various specifications. This improves testing efficiency, reduces costs, and enhances the device's adaptability to products of various shapes and sizes, meeting the high standards of airtightness testing required by modern industrial production.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0023] Figure 2 This is a schematic diagram of the interlocking assembly and the track adjustment assembly of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the adjusting screw and adjusting bracket of this utility model;

[0025] Figure 4 This is a schematic diagram of the test platform of this utility model;

[0026] Figure 5 This is a schematic diagram of the back-pushing assembly of this utility model;

[0027] Figure 6 This is a structural schematic diagram of the cantilever assembly and clamping assembly of this utility model;

[0028] Figure 7 This is a schematic diagram of the clamping component of this utility model.

[0029] The reference numerals and names in the figure are as follows:

[0030] 10 Test frame; 11 Conveyor track; 12 Airtight instrument; 20 Test platform; 21 Lifting panel; 22 Lifting column; 23 Lifting bracket; 24 Lifting cylinder; 25 Lifting guide shaft; 26 Lifting bearing; 30 Back thrust assembly; 31 Back thrust panel; 32 Back thrust bracket; 33 Back thrust drive; 34 Back thrust guide shaft; 35 Back thrust bearing; 40 Interlocking assembly; 41 Airtight cover; 42 Sealing ring; 43 Test through hole; 44 Interlocking cylinder; 45 Interlocking bracket; 50 Track adjustment assembly; 51 Adjusting screw; 52 53 Adjusting handle; 54 Adjusting nut; 55 Adjusting bracket; 56 Locking component; 57 Locking wrench; 58 Adjusting guide rail; 59 Adjusting slider; 60 Cantilever assembly; 61 Cantilever bracket; 62 Cantilever guide rail; 63 Cantilever slider; 64 Cantilever drive component; 65 Clamping guide rail; 66 Clamping slider; 70 Clamping assembly; 71 Clamping bracket; 72 Clamping motor; 73 First lead screw; 74 First gripper; 75 First nut; 76 Second lead screw; 77 Second gripper; 78 Second nut; 80 Product to be tested; 81 End face to be tested. Detailed Implementation

[0031] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Please see Figures 1 to 7 In this embodiment of the present invention, an automatic airtightness testing device includes a testing frame 10, an airtightness instrument 12, and an interlocking assembly 40. The testing frame 10 is provided with a testing platform 20 for placing the product 80 to be tested. The airtightness instrument 12 and the interlocking assembly 40 are respectively installed on the testing frame 10. The interlocking assembly 40 is provided with an airtight cover 41 and an interlocking cylinder 44. The interlocking cylinder 44 is installed on the interlocking assembly 40. The airtight cover 41 is fixed to the piston end of the interlocking cylinder 44, causing the interlocking cylinder 44 to rotate and drive the airtight cover 41 to move a certain distance, so that the open side of the airtight cover 41 is aligned with and covers the end face 81 of the product 80 to be tested. The airtight cover 41 is also provided with a test through hole 43, which is connected to the airtightness instrument 12 through a pipeline to form an air passage, thereby enabling the airtightness instrument 12 to perform an airtightness test on the end face 81 to be tested inside the airtight cover 41.

[0033] Specifically, one side of the product under test 80 typically has multiple holes for airtightness testing. These holes house various components that penetrate the product's internal and external spaces, such as connectors and switches. Due to waterproofing and other performance requirements, airtightness testing is necessary at the contact points between these holes and the components. Because there are numerous holes and components of varying sizes and shapes, especially irregular ones, airtightness testing is inconvenient, and conducting independent airtightness testing on each hole is relatively complex. This would require setting up airtightness testing nozzles of appropriate sizes, resulting in too many models, high costs, and a cumbersome testing process, impacting efficiency. Therefore, by setting up an airtight cover 41, the entire test end face 81 of the product under test 80 is covered and connected, allowing for simultaneous airtightness testing of all holes on the test end face 81.

[0034] Secondly, the opening of the airtight cover 41 is located at the end away from the mating assembly 40, and a sealing ring 42 is provided on the side wall of the opening. When the opening of the airtight cover 41 can be mated and covered on the test end face 81 of the product under test 80, the sealing ring 42 can enhance the airtightness between the two.

[0035] like Figures 1 to 3As shown, preferably, the mating assembly 40 further includes a mating bracket 45 and a track adjustment assembly 50. The mating bracket 45 is fixed to the test frame 10. The track adjustment assembly 50 is installed on the mating bracket 45 and includes an adjusting screw 51, an adjusting handle 52, an adjusting nut 53, and an adjusting bracket 54. The adjusting screw 51 is rotatably connected to the mating bracket 45, and the adjusting handle 52 is fixed to one end of the adjusting screw 51, thereby rotating the adjusting screw 51. The adjusting nut 53 is sleeved on the adjusting screw 51 and forms a threaded transmission connection with the adjusting screw 51, causing the adjusting screw 51 to rotate and driving the adjusting nut 53 to move linearly along the adjusting screw 51. The adjusting bracket 54 is tractively connected to the adjusting nut 53 and is used to install the mating cylinder 44.

[0036] Specifically, to allow the airtight cover 41 to move vertically to accommodate different heights of the product under test 80, a track adjustment assembly 50 can be provided. The adjustment handle 52 can be used to rotate the adjustment screw 51, causing the adjustment nut 53 to move linearly along the screw 51, and simultaneously causing the adjustment bracket 54 to move linearly, allowing the mating cylinder 44 and the airtight cover 41 to move vertically. Since only the vertical height of the mating assembly 40 needs to be adjusted once when changing the airtight cover 41 for different products under test 80, the adjustment can be easily performed using the adjustment handle 52.

[0037] In addition, after adjustment, during the testing of the same model of product under test 80, it is not necessary to adjust the adjusting screw 51 again. Therefore, in order to lock the adjusting screw 51, a locking member 55 can be installed on the mating bracket 45. One end of the locking member 55 is used to clamp the adjusting screw 51, and the clamping force of the locking member 55 is adjusted by the locking wrench 56 to lock the adjusting screw 51.

[0038] like Figure 2 and Figure 3 As shown, preferably, the track adjustment assembly 50 is further provided with an adjustment guide rail 57 and an adjustment slider 58 that cooperate with each other to form a linear motion system. The adjustment guide rail 57 is fixed to the interlocking bracket 45, and the adjustment slider 58 is fixed to the adjustment bracket 54, so that the adjustment bracket 54 can perform linear motion through the cooperation of the adjustment slider 58 and the adjustment guide rail 57.

[0039] Specifically, in order to make the vertical movement of the airtight cover 41 more stable and smooth, and to facilitate vertical adjustment, a linear guide rail module can be set up for assistance. That is, the adjusting guide rail 57 and the adjusting slider 58 can be combined to form the linear guide rail module in the prior art.

[0040] like Figure 1 and Figure 4As shown, preferably, the test platform 20 is provided with a lifting panel 21, a lifting bracket 23, a lifting cylinder 24, a lifting guide shaft 25, and a lifting bearing 26. The lifting bracket 23 is fixed to the test frame 10. The lifting bearing 26 and the lifting cylinder 24 are respectively fixed to the lifting bracket 23. One end of the lifting guide shaft 25 is fixed to the lifting panel 21, and the other end passes through the lifting bearing 26, thereby forming a linear motion system. The piston end of the lifting cylinder 24 is driven to the lifting panel 21, thereby driving the lifting panel 21 to move vertically, thus realizing the lifting operation of the test platform 20.

[0041] Specifically, to vertically lift and move the product 80 under test, a corresponding lifting mechanism can be set up, using a lifting cylinder 24 to drive the lifting panel 21 to move vertically. To test products 80 of different shapes or sizes, corresponding lifting columns 22 can be set on the lifting panel 21. Preferably, a wear-resistant, non-slip, and flexible contact material is provided at the end of the lifting column 22 that contacts the product 80 under test, making its support for the product 80 under test more stable and preventing scratches. The lifting bearing 26 is preferably a flange-type linear bearing, which is easy to install on the lifting bracket 23, allowing it to cooperate with the lifting guide shaft 25 to form a linear motion system.

[0042] like Figure 1 and Figure 5 As shown, preferably, it also includes a back-pushing assembly 30, which is provided with a back-pushing panel 31, a back-pushing bracket 32, a back-pushing drive 33, a back-pushing guide shaft 34, and a back-pushing bearing 35. The back-pushing bracket 32 ​​is fixed to the test frame 10. The back-pushing bearing 35 and the back-pushing drive 33 are respectively fixed to the back-pushing bracket 32. One end of the back-pushing guide shaft 34 is fixed to the back-pushing panel 31, and the other end passes through the back-pushing bearing 35, thereby forming a linear motion system. The driving end of the back-pushing drive 33 is connected to the back-pushing panel 31, thereby driving the back-pushing panel 31 to move laterally, and then performing a back-pushing operation on the product 80 to be tested.

[0043] Specifically, since the test end face 81 of the product under test 80 will be subjected to the insertion force of the airtight cover 41, in order to stabilize the product under test 80, the opposite end of the test end face 81 of the product under test 80 can be supported. A support plate (not shown in the figure) can be simply set on the test frame 10 for support.

[0044] Secondly, to better accommodate test products 80 of different shapes and sizes, it is preferable to also provide a back-pushing assembly 30. The back-pushing drive 33 of the back-pushing assembly 30 can push the back-pushing panel 31 to perform a back-pushing operation on the other end of the test product 80, thus supporting the test product 80 and facilitating the sealing operation of the airtight cover 41 on the test end face 81. Preferably, the back-pushing drive 33 is an electric cylinder as used in the prior art, utilizing a motor to drive a lead screw for linear motion.

[0045] like Figure 1 , Figure 6 and Figure 7 As shown, preferably, it also includes a cantilever assembly 60 and a clamping assembly 70. The cantilever assembly 60 is mounted on the test frame 10, and the clamping assembly 70 is mounted on the drive end of the cantilever assembly 60, thereby driving the clamping assembly 70 to move laterally.

[0046] Specifically, in order to clamp the product under test 80 without affecting its conveying path, a corresponding cantilever assembly 60 and clamping assembly 70 can be set up to work together to clamp and release the product under test 80.

[0047] like Figure 7 As shown, preferably, the clamping assembly 70 includes a clamping bracket 71, a clamping motor 72, a first lead screw 73, a first gripper 74, a first nut 75, a second lead screw 76, a second gripper 77, and a second nut 78. Both ends of the clamping bracket 71 are tractively connected to the drive end of the cantilever assembly 60. The clamping motor 72 is mounted on the clamping bracket 71. The first lead screw 73 and the second lead screw 76 are rotatably connected to the clamping bracket 71, with one end of the first lead screw 73 tractively connected to the output shaft of the clamping motor 72 and the other end tractively connected to the second lead screw 76, thereby driving the first lead screw 75, second lead screw 76, second gripper 77, and second nut 78. A lead screw 73 and a second lead screw 76 rotate synchronously; a first gripper 74 is fixed to a first nut 75, which is sleeved on the first lead screw 73 to form a threaded transmission connection; a second gripper 77 is fixed to a second nut 78, which is sleeved on the second lead screw 76 to form a threaded transmission connection; and the helical directions of the thread structures of the first lead screw 73 and the second lead screw 76 are opposite to each other, so that when the first lead screw 73 and the second lead screw 76 rotate synchronously, they respectively drive the first nut 75 and the second nut 78 to move relative to each other, so that the first gripper 74 and the second gripper 77 can perform a gripping operation on the product 80 to be tested.

[0048] Specifically, in order to enable the first gripper 74 and the second gripper 77 to move closer to each other and perform a clamping operation, the first lead screw 73 and the second lead screw 76 can be driven separately. For example, two motors can be set to drive the first lead screw 73 and the second lead screw 76 to rotate in opposite directions, so that the first nut 75 and the second nut 78 can move closer to each other, thereby driving the first gripper 74 and the second gripper 77 to perform a clamping operation.

[0049] Secondly, preferably, to save on a motor, the first lead screw 73 and the second lead screw 76 can be configured as a transmission connection to achieve synchronous rotation. Furthermore, the threaded structures of the first lead screw 73 and the second lead screw 76 can be configured with opposite helical directions, so that the synchronously rotating first lead screw 73 and the second lead screw 76 can also drive the first nut 75 and the second nut 78 to move closer to each other, allowing the first gripper 74 and the second gripper 77 to perform clamping operations.

[0050] like Figure 7 As shown, preferably, the clamping assembly 70 is further provided with a clamping guide rail 65 and a plurality of clamping sliders 66. The clamping guide rail 65 is fixedly connected to the clamping bracket 71, and the plurality of clamping sliders 66 are respectively fixedly connected to the first clamp 74 and the second clamp 77. The clamping guide rail 65 and the clamping sliders 66 cooperate with each other to form a linear motion system.

[0051] Specifically, in order to improve the lateral stability of the first gripper 74 and the second gripper 77, a linear guide module can be set up, and the smoothness of their movement can be improved by the cooperation between the clamping guide 65 and the clamping slider 66.

[0052] like Figure 6 and Figure 7 As shown, preferably, the cantilever assembly 60 includes a cantilever bracket 61, a cantilever guide rail 62, a cantilever slider 63, and a cantilever drive component 64. The cantilever bracket 61 is fixedly connected to the test frame 10, the cantilever guide rail 62 is fixedly connected to the cantilever bracket 61, and the cantilever slider 63 is fixedly connected to the clamping bracket 71 and cooperates with the cantilever guide rail 62 to form a linear motion system. The drive end of the cantilever drive component 64 is connected to the clamping bracket 71, thereby driving the clamping bracket 71 to move linearly along the cantilever guide rail 62.

[0053] Specifically, to ensure that the first gripper 74 and the second gripper 77 do not obstruct the transport of the product under test 80, it is preferable to provide two sets of cantilever brackets 61, with both ends of the clamping bracket 71 slidably connected to the two sets of cantilever brackets 61. The cantilever drive 64 then drives the entire clamping assembly 70 to move along the cantilever brackets 61, removing the first gripper 74 and the second gripper 77 from the transport path of the product under test 80. Preferably, the cantilever drive 64 is a rodless cylinder, mounted on one side of the cantilever bracket 61, with the drive end of the cylinder connected to the clamping bracket 71, thereby moving the clamping bracket 71 along the cantilever bracket 61.

[0054] Secondly, in order to facilitate the installation of the testing equipment on the automated production line, a conveyor track 11 can be set on the testing frame 10, and the product to be tested 80 can be conveyed using a conveyor fixture (not shown in the figure).

[0055] The specific conveying and testing processes of the testing equipment are as follows: In the initial state, to make way for the conveying path on the conveying track 11, the lifting cylinder 24 drives the lifting panel 21 to move downwards and maintain it at the bottom initial position. The back-push drive 33 drives the back-push panel 31 to move away from the conveying track 11 and maintains it at the initial position away from the conveying track 11. The insertion cylinder 44 drives the airtight cover 41 to move away from the conveying track 11 and maintains it at the initial position. The clamping motor 72 drives the first clamp 74 and the second clamp 77 to move away from each other, and through the cantilever drive 64, drives the clamping bracket 71 to move away from the conveying track 11 and maintain it at the initial position.

[0056] When a product 80 to be tested, which is placed on the conveying fixture, is conveyed onto the conveying track 11, the cantilever drive 64 moves the clamping bracket 71 upwards along the conveying track 11. Simultaneously, the clamping motor 72 operates, causing the first clamp 74 and the second clamp 77 to approach each other, thus clamping the product 80. The empty conveying fixture then continues to convey products backwards, clearing space below the product 80. Meanwhile, the lifting cylinder 24 operates, driving the lifting panel 21 upwards, allowing the lifting column 22 on the lifting panel 21 to support the product 80 below.

[0057] Subsequently, the mating cylinder 44 of the mating assembly 40 operates, driving the airtight cover 41 to move towards the product under test 80, so that the airtight cover 41 mates and covers the test end face 81 of the product under test 80. At the same time, the back-push drive 33 operates, driving the back-push panel 31 to move towards the product under test 80, so that the back-push panel 31 abuts against the other end of the product under test 80, thereby providing support for the product under test 80. This allows the airtight cover 41 to be securely fastened to the test end face 81, achieving a sealing operation. Then, the airtightness instrument 12 can perform an airtightness test through the test through hole 43.

[0058] After the test is completed, the airtight cover 41, the back push panel 31, and the lifting panel 21 return to their initial positions, clearing the conveying path of the conveying track 11. This allows the conveying fixture to be transported from the previous station to the area below the product under test 80. The clamping motor 72 reverses its rotation, causing the first clamp 74 and the second clamp 77 to move away from each other, releasing the product under test 80 and placing it back on the conveying fixture for transport to the next station. Subsequently, the cantilever drive 64 drives the clamping assembly 70 to return to its initial position, awaiting a new round of testing.

[0059] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. An automatic airtightness testing device, characterized in that, The test assembly includes a test frame (10), an airtight instrument (12), and an interlocking assembly (40). The test frame (10) is equipped with a test platform (20) for placing the product under test (80). The airtight instrument (12) and the interlocking assembly (40) are respectively installed on the test frame (10). The interlocking assembly (40) is equipped with an airtight cover (41) and an interlocking cylinder (44). The airtight cover (41) is fixed to the piston end of the interlocking cylinder (44) to allow the interlocking cylinder to... The cylinder (44) operates, driving the airtight cover (41) to move a certain distance, so that the opening side of the airtight cover (41) is aligned with and covers the end face (81) of the product to be tested (80); and the airtight cover (41) is also provided with a test through hole (43), which is connected to the airtight instrument (12) through a pipeline, so that the airtight instrument (12) can perform an airtight test on the end face (81) inside the airtight cover (41).

2. The automatic airtightness testing device according to claim 1, characterized in that, The mating assembly (40) is further provided with a mating bracket (45) and a track adjustment assembly (50). The mating bracket (45) is fixed to the test frame (10). The track adjustment assembly (50) is provided with an adjusting screw (51), an adjusting handle (52), an adjusting nut (53), and an adjusting bracket (54). The adjusting screw (51) is rotatably connected to the mating bracket (45). The adjusting handle (52) is fixed to one end of the adjusting screw (51) so as to rotate the adjusting screw (51). The adjusting nut (53) is sleeved on the adjusting screw (51) and forms a threaded transmission connection with the adjusting screw (51). The adjusting bracket (54) is drivenly connected to the adjusting nut (53) and is used to install the mating cylinder (44).

3. The automatic airtightness testing device according to claim 2, characterized in that, The track adjustment assembly (50) is further provided with an adjustment guide rail (57) and an adjustment slider (58) that cooperate with each other to form a linear motion system. The adjustment guide rail (57) is fixed to the interlocking bracket (45), and the adjustment slider (58) is fixed to the adjustment bracket (54), so that the adjustment bracket (54) can perform linear motion through the cooperation of the adjustment slider (58) and the adjustment guide rail (57).

4. The automatic airtightness testing device according to claim 1, characterized in that, The test platform (20) is provided with a lifting panel (21), a lifting bracket (23), a lifting cylinder (24), a lifting guide shaft (25), and a lifting bearing (26). The lifting bracket (23) is fixed to the test frame (10). The lifting bearing (26) and the lifting cylinder (24) are respectively fixed to the lifting bracket (23). One end of the lifting guide shaft (25) is fixed to the lifting panel (21), and the other end passes through the lifting bearing (26), thus forming a linear motion system. The piston end of the lifting cylinder (24) is connected to the lifting panel (21).

5. An automatic airtightness testing device according to claim 1, characterized in that, It also includes a back-push assembly (30), which is provided with a back-push panel (31), a back-push bracket (32), a back-push drive (33), a back-push guide shaft (34), and a back-push bearing (35). The back-push bracket (32) is fixed to the test frame (10). The back-push bearing (35) and the back-push drive (33) are respectively fixed to the back-push bracket (32). One end of the back-push guide shaft (34) is fixed to the back-push panel (31), and the other end passes through the back-push bearing (35), thereby forming a linear motion system. The drive end of the back-push drive (33) is connected to the back-push panel (31).

6. An automatic airtightness testing device according to claim 1, characterized in that, It also includes a cantilever assembly (60) and a clamping assembly (70), the cantilever assembly (60) being mounted on the test frame (10) and the clamping assembly (70) being mounted on the drive end of the cantilever assembly (60).

7. An automatic airtightness testing device according to claim 6, characterized in that, The clamping assembly (70) includes a clamping bracket (71), a clamping motor (72), a first lead screw (73), a first gripper (74), a first nut (75), a second lead screw (76), a second gripper (77), and a second nut (78). Both ends of the clamping bracket (71) are connected to the drive end of the cantilever assembly (60). The clamping motor (72) is mounted on the clamping bracket (71). The first lead screw (73) and the second lead screw (76) are rotatably connected to the clamping bracket (71), and one end of the first lead screw (73) is connected to the clamping motor. The output shaft of the machine (72) is connected to the second lead screw (76) at the other end, so that the clamping motor (72) drives the first lead screw (73) and the second lead screw (76) to rotate synchronously; the first gripper (74) is fixed to the first nut (75), the first nut (75) is sleeved on the first lead screw (73) and forms a threaded transmission connection; the second gripper (77) is fixed to the second nut (78), the second nut (78) is sleeved on the second lead screw (76) and forms a threaded transmission connection; and the helical directions of the thread structure of the first lead screw (73) and the second lead screw (76) are opposite to each other.

8. An automatic airtightness testing device according to claim 7, characterized in that, The clamping assembly (70) is also provided with a clamping guide rail (65) and a plurality of clamping sliders (66). The clamping guide rail (65) is fixed to the clamping bracket (71), and the plurality of clamping sliders (66) are respectively fixed to the first clamp (74) and the second clamp (77). The clamping guide rail (65) and the clamping sliders (66) cooperate with each other to form a linear motion system.

9. An automatic airtightness testing device according to claim 7, characterized in that, The cantilever assembly (60) is provided with a cantilever bracket (61), a cantilever guide rail (62), a cantilever slider (63), and a cantilever drive (64). The cantilever bracket (61) is fixed to the test frame (10), the cantilever guide rail (62) is fixed to the cantilever bracket (61), and the cantilever slider (63) is fixed to the clamping bracket (71) and cooperates with the cantilever guide rail (62) to form a linear motion system. The drive end of the cantilever drive (64) is connected to the clamping bracket (71) to drive the clamping bracket (71) to move linearly along the cantilever guide rail (62).

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