Air tightness testing module and testing equipment

Abstract

This utility model relates to an airtightness detection module, which includes a first telescopic component, a second telescopic component, and a pressure head assembly. The second telescopic component is mounted on the output shaft of the first telescopic component, and the telescopic directions of the first and second telescopic components are the same. At least one of the first and second telescopic components is fixedly provided with a guide post, and the other is slidably connected to the guide post. The pressure head assembly is mounted on the output shaft of the second telescopic component and has an output channel for output fluid. The second telescopic component can apply controllable pressure to the pressure head assembly, thereby making the sealing pressure of the pressure head assembly controllable.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, and in particular to an airtightness detection module and detection equipment. Background Technology

[0002] In some airtightness testing equipment, the airtightness testing module seals the airtightness input interface of the workpiece and introduces fluid into the module to perform airtightness testing. Specifically, the airtightness testing module needs to seal the joints to ensure their airtightness. For example, publication CN118533404A provides an airtightness testing device for a motor driver.

[0003] However, existing airtightness testing devices use a single-stage telescopic mechanism as the power source for airtightness pressurization and sealing, thereby sealing the contact surface between the device and the workpiece. Not only is the sealing pressure not adjustable, but the large telescopic stroke also leads to low sealing accuracy, which is a technical problem that needs to be improved. Utility Model Content

[0004] To overcome the problems existing in related technologies, this utility model provides an airtightness detection module and detection equipment to solve the technical problems of non-adjustable sealing pressure and low sealing accuracy.

[0005] According to a first aspect of the present invention, an airtightness detection module is provided. The airtightness detection module includes a first telescopic component, a second telescopic component, and a pressure head component. The second telescopic component is mounted on the output shaft of the first telescopic component. The telescopic direction of the first telescopic component and the telescopic direction of the second telescopic component are the same. At least one of the first telescopic component and the second telescopic component is fixedly provided with a guide post, and the other is slidably connected to the guide post.

[0006] The pressure head assembly is mounted on the output shaft of the second telescopic assembly, and the pressure head assembly is provided with an output channel for the output fluid.

[0007] In one embodiment, the airtightness detection module further includes a connecting block, which is detachably connected to the second telescopic component, and the output shaft of the first telescopic component is fixedly connected to the connecting block.

[0008] In one embodiment, two guide posts are provided, which are diagonally distributed and fixedly connected to the connecting block.

[0009] In one embodiment, the connector pipes of the first telescopic component and the connector pipes of the second telescopic component are located on the same side.

[0010] In one embodiment, the second telescopic assembly includes an end cap with a protruding tube, the output shaft of the second telescopic assembly sliding on the protruding tube, and the pressure head assembly inserted into the protruding tube.

[0011] In one embodiment, a waist-shaped elongated hole is provided on one side of the convex tube, and the connector of the pressure head assembly extends through the waist-shaped elongated hole.

[0012] In one embodiment, the airtightness detection module includes a sealing ring fitted onto the pressure head assembly.

[0013] In one embodiment, a plug is also included, which is detachably connected to the pressure head assembly.

[0014] In one embodiment, a mounting bracket is also included, the mounting bracket comprising a base plate and a vertical plate sliding on the base plate, the first telescopic component being mounted to the vertical plate by fasteners.

[0015] According to a second aspect of the present invention, a testing device is provided, comprising an airtightness testing module and a frame as described above, wherein the airtightness testing module is mounted on the frame.

[0016] The technical solution provided by the embodiments of this utility model can include the following beneficial effects: the first telescopic component and the second telescopic component constitute a two-stage feeding telescopic mechanism. The first telescopic component can perform long-distance linear motion to increase the distance between the pressure head assembly and the workpiece, facilitating workpiece assembly. The second telescopic component can apply controllable pressure to the pressure head assembly, so that the sealing pressure of the pressure head assembly is controllable. Furthermore, the second telescopic component can cooperate with the first telescopic component to apply comprehensive pressure, thereby expanding the pressure range that the pressure head assembly can withstand. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of an airtightness detection module according to one embodiment.

[0019] Figure 2 This is a schematic diagram of the exploded structure of an airtightness detection module according to one embodiment.

[0020] Figure 3 This is a schematic diagram illustrating the structure of the pressure head assembly mounted on the end cap according to one embodiment.

[0021] Figure 4 This is a schematic diagram illustrating the installation of a plug on an airtightness detection module according to one embodiment.

[0022] In the figure, the first telescopic component 10; the first shaft 11; the second telescopic component 20; the second shaft 21; the convex tube 22; the oblong hole 23; the end cap 24; the pressure head assembly 30; the output channel 31; the connector 32; the sealing ring 33; the connecting block 40; the guide post 41; the mounting bracket 50; the upright plate 51; the base plate 52; and the plug 60. Detailed Implementation

[0023] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] like Figures 1 to 3 As shown, this utility model provides an airtightness detection module, which includes a first telescopic component 10, a second telescopic component 20, and a pressure head assembly 30. The second telescopic component 20 is mounted on the output shaft of the first telescopic component 10, and the pressure head assembly 30 is mounted on the output shaft of the second telescopic component 20. The telescopic movement of the first telescopic component 10 can drive the second telescopic component 20 and the pressure head assembly 30 to move synchronously. The telescopic movement of the second telescopic component 20 can drive the telescopic movement of the pressure head assembly 30. The telescopic direction of the first telescopic component 10 is the same as that of the second telescopic component 20, thus constructing a two-stage telescopic movement structure. When the pressure head assembly 30 is obstructed at the sealing position of the workpiece, the first telescopic component 10 and the second telescopic component 20 form a power mechanism for applying pressure, which can precisely adjust the pressure of the pressure head assembly 30. For ease of distinction, the output shaft of the first telescopic component 10 is defined as the first shaft 11, and the output shaft of the second telescopic component 20 is defined as the second shaft 1.

[0025] To improve the smoothness of movement of the second telescopic component 20, at least one of the first telescopic component 10 and the second telescopic component 20 is fixedly provided with a guide post 41, and the other is slidably connected to the guide post 41. The guide post 41 is arranged parallel to the first shaft 11, which can improve the smoothness of movement. For example, one end of the guide post 41 is fixed to the first telescopic component 10, and the other end slides through the second telescopic component 20. Alternatively, one end of the guide post 41 is fixed to the second telescopic component 20, and the other end slides through the first telescopic component 10.

[0026] The pressure head assembly 30 is provided with an output channel 31 for outputting fluid. The pressure head assembly 30 is connected to a fluid output device, which can output fluid at a preset pressure. The fluid can be gas or liquid. When the pressure head assembly 30 is sealed against the test port of the tool, the fluid enters the workpiece through the input channel for airtightness testing.

[0027] In one embodiment, the airtightness detection module further includes a connecting block 40, which is detachably connected to the second telescopic component 20, and the first shaft 11 is fixedly connected to the connecting block 40. The connecting block 40 is located between the first telescopic component 10 and the second telescopic component 20, and is fixed to the cylinder of the second telescopic component 20 to improve the consistency of force on the connecting block 40 and the second telescopic component 20.

[0028] Connector block 40 serves as an adapter block, facilitating easy external expansion connections.

[0029] Two guide posts 41 are provided, which are diagonally distributed and fixedly connected to the connecting block 40. The two guide posts 41 can improve stability. The centers of the two guide posts 41 are parallel to the center line of the first shaft 11. All three are in the same plane or in a triangular distribution, which can maintain the linear movement of the second telescopic component 20.

[0030] In one embodiment, the connector pipes of the first telescopic component 10 and the second telescopic component 20 are located on the same side. The connector pipes are used to connect to external air or oil lines, thereby enabling reciprocating motion. The fact that the connector pipes are located on the same side facilitates wiring control.

[0031] In a preferred embodiment, the second telescopic assembly 20 includes an end cap 24 located at the front end of the cylinder of the second telescopic assembly 20. The end cap 24 includes a protruding tube 22, on which the second shaft 1 slides, and the pressure head assembly 30 is inserted. The second shaft 1 extends out of the tube 22 to increase the support area, improve the telescopic smoothness of the second shaft 1, and prevent deflection when pressure is applied.

[0032] The pressure head assembly 30 is inserted into the convex tube 22 to improve the coaxiality of the assembly of the two. The connection part of the pressure head assembly 30 and the second shaft 1 is located inside the convex tube 22, which can improve the connection accuracy.

[0033] In one embodiment, a waist-shaped elongated hole 23 is provided on one side of the convex tube 22, and the connector 32 of the pressure head assembly 30 extends through the waist-shaped elongated hole 23. The waist-shaped elongated hole 23 penetrates one side wall of the convex tube 22, and the connector 32 extends through the waist-shaped elongated hole 23 and connects to the fluid output device. The connector 32 can move within the waist-shaped elongated hole 23 with the telescopic movement of the second shaft 1. The length of the waist-shaped elongated hole 23 is greater than the range of motion of the connector 32. The convex tube 22 can provide protection for the connector 32, and also provide support and limitation for the insertion part of the pressure head assembly 30.

[0034] The waist-shaped elongated hole 23 and the connector 32 can also prevent deflection.

[0035] In one embodiment, the pressure head assembly 30 is provided with a positioning groove, and the airtightness detection module includes a sealing ring 33 fitted into the positioning groove. The sealing ring 33 can seal the periphery of the pressure head assembly 30 to improve the sealing effect of the pressure head assembly 30.

[0036] In the above embodiments, after the pressure head assembly 30 abuts against and adheres to the workpiece, it can also perform direct fluid transport.

[0037] like Figure 1 and Figure 4 As shown, in one embodiment, the airtightness detection module further includes a plug 60, which is detachably connected to the pressure head assembly 30. The plug 60 can block the output channel 31 of the pressure head assembly 30, so that the airtightness detection module can be used as a sealing device. Compared with traditional sealing devices, the sealing device in this embodiment has a two-stage abutment seal, resulting in a better sealing and debugging effect.

[0038] Based on the above embodiments, the airtightness testing module also includes a mounting bracket 50, which is used to connect to a base platform such as a frame to orient components such as the first telescopic assembly 10 toward the workpiece to be tested. The mounting bracket 50 is a rigid structural component, which can improve the convenience of connection and assembly.

[0039] Furthermore, the mounting bracket 50 includes a base plate 52 and an upright plate 51 that slides on the base plate 52. The first telescopic component 10 is mounted on the upright plate 51 by fasteners. The upright plate 51 is set upright and slides along the base plate 52, and the initial height and position of the first telescopic component 10 can be adjusted to adapt to different workpiece inspection requirements.

[0040] The airtightness testing module disclosed in the above embodiments is applied to a testing device, wherein the testing device includes an airtightness testing module and a frame, and the airtightness testing module is mounted on the frame.

[0041] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of this application and include common knowledge or customary technical means in the art that are not disclosed in this invention.

Claims

1. An airtightness detection module, characterized in that, The airtightness detection module includes a first telescopic component, a second telescopic component, and a pressure head component. The second telescopic component is installed on the output shaft of the first telescopic component. The telescopic direction of the first telescopic component and the telescopic direction of the second telescopic component are the same. At least one of the first telescopic component and the second telescopic component is fixedly provided with a guide post, and the other is slidably connected to the guide post. The pressure head assembly is mounted on the output shaft of the second telescopic assembly, and the pressure head assembly is provided with an output channel for the output fluid.

2. The airtightness detection module according to claim 1, characterized in that, The airtightness detection module also includes a connecting block, which is detachably connected to the second telescopic component, and the output shaft of the first telescopic component is fixedly connected to the connecting block.

3. The airtightness detection module according to claim 2, characterized in that, Two guide posts are provided, which are diagonally distributed and fixedly connected to the connecting block.

4. The airtightness detection module according to claim 1, characterized in that, The connector pipes of the first telescopic component and the connector pipes of the second telescopic component are located on the same side.

5. The airtightness detection module according to claim 1, characterized in that, The second telescopic assembly includes an end cap with a protruding tube, the output shaft of the second telescopic assembly slides on the protruding tube, and the pressure head assembly is inserted into the protruding tube.

6. The airtightness detection module according to claim 5, characterized in that, A waist-shaped elongated hole is provided on one side of the convex tube, and the connector of the pressure head assembly extends through the waist-shaped elongated hole.

7. The airtightness detection module according to claim 5, characterized in that, The airtightness detection module includes a sealing ring fitted onto the pressure head assembly.

8. The airtightness detection module according to claim 1, characterized in that, It also includes a plug, which is detachably connected to the pressure head assembly.

9. The airtightness detection module according to claim 1, characterized in that, It also includes a mounting bracket, which includes a base plate and a vertical plate that slides on the base plate, and the first telescopic component is mounted on the vertical plate by fasteners.

10. A testing device, characterized in that, It includes the airtightness detection module and the rack as described in any one of claims 1-9, wherein the airtightness detection module is mounted on the rack.

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