Automatic sealing performance detection device

Abstract

The utility model discloses a sealing performance automatic detection device which comprises a test seat, the test seat is provided with a test channel and a test cavity, and the test channel is used for a workpiece to be inserted in a sealing mode so as to seal and cover the test cavity; the vacuumizing assembly comprises a vacuumizing pump, a first air pipe and a control valve, one end of the first air pipe is communicated to one end of the vacuum pump, and the control valve is arranged at the other end of the vacuum pump; the vacuumizing pump is used for vacuumizing the test cavity, so that the test cavity is in a negative pressure state; and the pressure detection assembly is mounted on the test seat and is used for detecting the air pressure in the test cavity. According to the sealing performance automatic detection device, the test workpiece can be inserted into the test channel, then the test cavity is vacuumized, and the pressure detection assembly is used for detecting the pressure condition in the test cavity, so that the sealing performance of the test workpiece is detected.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to an automatic air tightness detection device. Background Art

[0002] At present, terminal connectors with PCB boards are generally used on covered electrical equipment, mainly including terminal seats and PCB boards. After the PCB board passes through the terminal seat, it is fixed with sealant, and then a sealing ring is set on the terminal seat and enclosed at the connection position between the PCB board and the terminal seat. When the terminal connector is used in electrical equipment, the airtightness between the PCB board and the terminal seat is an important parameter affecting the mid-end equipment, so it needs to be tested during production.

[0003] There is no dedicated port sealing detection equipment in the current market. The ports can only be installed on the original equipment for detection. In this way, when the original equipment leaks, it is impossible to determine which specific port has a sealing failure. The fault point is cumbersome and increases the debugging time of the original equipment. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide an automatic sealing detection device, which can detect the sealing of the test workpiece by inserting the test workpiece into a test channel, then evacuating the test cavity, and detecting the pressure conditions in the test cavity with a pressure detection component.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] An automatic sealing detection device, comprising:

[0007] A test seat, the test seat having a test channel and a test cavity, the test channel being used for a workpiece to be sealed and inserted to seal the test cavity;

[0008] A vacuum pump assembly, comprising a vacuum pump, a first air pipe and a control valve, wherein one end of the first air pipe is connected to one end of the vacuum pump, and the other end of the vacuum pump is provided with a control valve; the vacuum pump is used to vacuum the test chamber so that the test chamber is in a negative pressure state;

[0009] A pressure detection component is installed on the test seat and is used to detect the air pressure in the test cavity.

[0010] Furthermore, the test seat includes a shell and an end cover, the test cavity is provided inside the shell, the end cover is sealed to the shell, and the test channel is provided on the end cover.

[0011] Furthermore, a sealing ring is clamped between the end cover and the shell; the end cover is connected to the shell by bolts and is used to compress the sealing ring during the bolt installation process.

[0012] Furthermore, a connecting hole is provided on the end cover.

[0013] Furthermore, the pressure detection assembly includes a pressure detection gauge and a second air pipe, the pressure detection gauge is installed on the test seat, one end of the second air pipe is connected to the pressure detection gauge, and the other end of the second air pipe is connected to the test cavity.

[0014] Furthermore, the pressure detection assembly also includes a first mounting plate, the bottom end of the first mounting plate is provided with a bent first folded edge, and the first folded edge is connected to the top of the test seat; the pressure detection gauge is installed on the side of the first mounting plate.

[0015] Furthermore, the first mounting plate is a metal plate.

[0016] Furthermore, the vacuum pumping assembly further comprises a third air pipe, one end of which is connected to the vacuum pump, and the other end of which is provided with a control valve;

[0017] Furthermore, the vacuum pump assembly also includes a second mounting plate, the bottom end of the second mounting plate is provided with a bent second folded edge, the second folded edge is connected to the top end of the test seat, and the vacuum pump is installed on the side of the second mounting plate.

[0018] Furthermore, the second mounting plate is a metal plate.

[0019] Compared with the prior art, the beneficial effect of the utility model is that the test workpiece can be inserted into the test channel, and then the test cavity is evacuated, and the pressure detection component is used to detect the pressure condition in the test cavity to perform a sealing test on the test workpiece, and the air tightness of the test workpiece can be detected separately, thereby improving the test efficiency and avoiding subsequent troubleshooting of leakage fault points. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a structural schematic diagram of another viewing angle of the utility model;

[0022] Figure 3 It is a schematic diagram of the exploded structure of the utility model.

[0023] In the figure: 10, test seat; 11, end cover; 111, connecting hole; 12, test cavity; 13, test channel; 14, sealing ring; 21, vacuum pump; 22, first air pipe; 23, control valve; 24, third air pipe; 25, second mounting plate; 251, second folded edge; 31, pressure detection gauge; 32, second air pipe; 33, first mounting plate; 331, first folded edge. DETAILED DESCRIPTION

[0024] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] like Figure 1 , Figure 2 as well as Figure 3 An automatic sealing detection device shown in the figure includes a test seat 10, a vacuum pumping component and a pressure detection component. Specifically, a test cavity 12 is provided in the test seat 10, and a test channel 13 that is connected to the test cavity 12 is also provided on the test seat 10. A test workpiece can be sealed and inserted into the test channel 13 and the test cavity 12 can be sealed and covered.

[0028] The vacuum pump assembly includes a vacuum pump 21, a first air pipe 22 and a control valve 23. One end of the first air pipe 22 is connected to one end of the vacuum pump. The other end of the vacuum pump is provided with a control valve 23. The control valve 23 can open or close the vacuum pump 21. The vacuum pump 21 is used to vacuum the test chamber 12 so that the test chamber 12 is in a negative pressure state. The pressure detection assembly is installed on the test seat 10, and the pressure detection assembly is used to detect the air pressure in the test chamber 12.

[0029] On the basis of the above structure, when the automatic sealing detection device of the utility model is used, the test workpiece is a terminal connector with a PCB board as an example for explanation. During the test, the PCB board of the workpiece to be tested can be inserted into the test channel 13, and the terminal seat can seal the outside of the test channel 13. During the specific test, the control valve 23 can be opened, and the vacuum pump 21 can vacuum the test chamber 12 through the first air pipe 22, and the air in the test chamber 12 is extracted, so that the test chamber 12 is negative pressure, and the pressure gauge starts to display the negative pressure value in the chamber. Since the terminal seat of the test workpiece is sealed and covered in the test channel 13, if the sealing performance of the workpiece is good, the test channel 13 will not leak during the test, that is, the pressure value detected by the pressure detection component in the test chamber 12 is a stable value or a value tending to be stable. If the sealing performance of the workpiece is poor, there will be leakage in the test channel 13. At this time, during the vacuuming process, the pressure value detected by the pressure detection component will always have a large fluctuation, proving that the sealing of the test workpiece is unqualified.

[0030] Specifically in this embodiment, when the pressure value detected by the pressure detection component tends to be stable and is at about -85kPa, it can be proved that the sealing of the detected terminal joint is good. If the pressure value detected by the pressure detection component always fluctuates greatly and deviates from -85kPa by a large amount, it proves that the sealing of the detected terminal joint is unqualified.

[0031] Furthermore, the test seat 10 includes a shell and an end cover 11, and a test cavity 12 can be provided inside the shell. By sealing the end cover 11 to the shell, the test cavity 12 inside the shell can be sealed. On the basis of this structure, a test channel 13 is processed on the end cover 11, and then the end cover 11 is assembled to the shell through bolts and other connectors. In this way, the test channel 13 can be conveniently processed separately on the end cover 11 without processing the entire shell, thereby reducing the processing difficulty.

[0032] In addition, when testing the air tightness of the workpiece, the workpiece to be tested may be pre-installed behind the test channel 13 of the end cover 11, and then the end cover 11 is sealed on the housing, which facilitates the assembly of the workpiece to be tested.

[0033] Furthermore, a sealing ring 14 can be clamped between the end cover 11 and the shell, and the end cover 11 is connected to the shell by bolts. When the bolts are screwed into the shell, the bolt heads of the bolts can press the end cover 11, and the end cover 11 can press the sealing ring 14 clamped between the shell and the end cover 11, so that the sealing ring 14 is deformed to form a larger sealing surface, and the sealing effect is better.

[0034] Furthermore, in order to facilitate the assembly of the test workpiece and the test channel 13 of the end cover 11, a connection hole 111 may be provided on the end cover 11. When clamping the test workpiece, the test workpiece may be clamped by providing a screw or other structure on the test workpiece and connecting it to the connection hole 111. Of course, a fixture may also be provided on the end cover 11 to clamp and fix the test workpiece.

[0035] Furthermore, the pressure detection assembly in this embodiment includes a pressure detection gauge 31 and a second air pipe 32. The pressure detection gauge 31 is installed on the test seat 10, and one end of the second air pipe 32 is connected to the pressure detection gauge 31, and the other end of the second air pipe 32 is connected to the test chamber 12. When detecting the pressure, the vacuum pump 21 of the vacuum assembly vacuums the test chamber 12, and the second air pipe 32 can connect the pressure detection gauge 31 with the test chamber 12, so that the pressure detection gauge 31 can display the pressure value in the test chamber 12. Of course, the pressure detection gauge 31 is a prior art, and its structure and working principle do not belong to the technical content to be protected by this application, and will not be described in detail here.

[0036] Of course, the pressure detection component can also be selected as a pressure sensor in the prior art, and the selection is made according to actual needs.

[0037] Furthermore, in order to facilitate the installation of the pressure detection gauge 31, the pressure detection assembly also includes a first mounting plate 33, and the bottom end of the first mounting plate 33 is provided with a bent first folded edge 331, and the first folded edge 331 is connected to the top of the test seat 10. The first folded edge 331 can also be assembled to the test seat 10 by means of screws and other structures, and the pressure detection gauge 31 is installed on the side of the first mounting plate 33, that is, the pressure detection gauge 31 can be assembled with the first mounting plate 33, and then the first mounting plate 33 can be assembled to the test seat 10 by means of the first folded edge 331 of the first mounting plate 33. Since the bending of the first folded edge 331 is staggered with the pressure detection gauge 31 installed on the side of the first mounting plate 33, the first folded edge 331 will not be interfered by the pressure detection gauge 31 when it is assembled to the test seat 10.

[0038] Furthermore, the first mounting plate 33 is a metal plate, which has good strength and supports the pressure detection gauge 31. In addition, the use of a metal plate also facilitates the bending of the first mounting plate, and the processing of the first flange only requires the use of a sheet metal process, which is simple to process.

[0039] Furthermore, the above-mentioned vacuum pumping component also includes a third air pipe 24, and one end of the third air pipe 24 is connected to the vacuum pump, and the other end of the third air pipe 24 is provided with a control valve 23. When vacuuming, the control valve 23 is opened, and the third air pipe 24 can be connected to the outside world. The vacuum pump 21 draws out the gas in the test seat 10 through the first air pipe 22 and discharges it through the third air pipe 24 to achieve vacuuming. After the vacuuming is completed, the control valve 23 can be closed.

[0040] Of course, the control valve 23 can be a manual valve or a solenoid valve in the prior art, which can be selected according to actual needs.

[0041] Furthermore, the vacuum assembly also includes a second mounting plate 25, the bottom end of the second mounting plate 25 is provided with a bent second folded edge 251, the second folded edge 251 is connected to the top of the test seat 10, and the vacuum pump 21 is installed on the side of the second mounting plate 25. The second folded edge 251 can also be assembled to the test seat 10 by means of screws and other structures, and the vacuum pump 21 is installed on the side of the second mounting plate 25, that is, the vacuum pump 21 can be assembled with the second mounting plate 25, and then the second mounting plate 25 can be assembled to the test seat 10 by means of the second folded edge 251. Since the bending of the second folded edge 251 is staggered with the vacuum pump 21 installed on the side of the second mounting plate 25, the second folded edge 251 will not be disturbed by the vacuum pump 21 when it is assembled to the test seat 10.

[0042] Further, the second mounting plate 25 is a metal plate, which also has good strength and supports the vacuum pump 21. In addition, the use of a metal plate also facilitates the bending of the second mounting plate, and the processing of the second flange only requires the use of a sheet metal process, which is simple to process.

[0043] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the utility model.

Claims

1. An automatic sealing detection device, It is characterized in that include, A test seat, the test seat having a test channel and a test cavity, the test channel being used for a workpiece to be sealed and inserted to seal the test cavity; A vacuum pump assembly, comprising a vacuum pump, a first air pipe and a control valve, wherein one end of the first air pipe is connected to one end of the vacuum pump, and the other end of the vacuum pump is provided with a control valve; the vacuum pump is used to vacuum the test chamber so that the test chamber is in a negative pressure state; A pressure detection component is installed on the test seat and is used to detect the air pressure in the test cavity.

2. The automatic sealing detection device according to claim 1, It is characterized in that The test seat comprises a shell and an end cover. The test cavity is arranged inside the shell. The end cover is sealed on the shell. The test channel is arranged on the end cover.

3. The automatic sealing detection device according to claim 2, It is characterized in that A sealing ring is clamped between the end cover and the shell; the end cover is connected to the shell through bolts and is used to compress the sealing ring during the bolt installation process.

4. The automatic sealing detection device according to claim 2, It is characterized in that The end cover is provided with a connecting hole.

5. The automatic sealing detection device according to any one of claims 1 to 4, It is characterized in that The pressure detection assembly includes a pressure detection gauge and a second air pipe. The pressure detection gauge is installed on the test seat. One end of the second air pipe is connected to the pressure detection gauge, and the other end of the second air pipe is connected to the test cavity.

6. The automatic sealing detection device according to claim 5, It is characterized in that The pressure detection assembly also includes a first mounting plate, the bottom end of the first mounting plate is provided with a bent first folded edge, and the first folded edge is connected to the top of the test seat; the pressure detection gauge is installed on the side of the first mounting plate.

7. The automatic sealing detection device according to claim 6, It is characterized in that The first mounting plate is a metal plate.

8. The automatic sealing detection device according to any one of claims 1 to 4, It is characterized in that The vacuum pumping assembly further comprises a third air pipe, one end of which is connected to the vacuum pump, and the other end of which is provided with a control valve.

9. The automatic sealing detection device according to any one of claims 1 to 4, It is characterized in that The vacuum pump assembly further comprises a second mounting plate, the bottom end of the second mounting plate is provided with a bent second folding edge, the second folding edge is connected to the top end of the test seat, and the vacuum pump is mounted on the side of the second mounting plate.

10. The automatic sealing detection device according to claim 9, It is characterized in that The second mounting plate is a metal plate.

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