Sealing protection mechanism for testing

Abstract

The utility model provides a sealing protection mechanism for testing, and belongs to the technical field of automatic sealing. The sealing protection mechanism for the liquid test comprises a driving mechanism which is provided with an output shaft which controllably reciprocates along the horizontal direction; the shaft connecting structure is fixedly connected with the output shaft; the sealing assembly is internally provided with a sealing cavity, the sealing cavity penetrates through one end of the sealing assembly, and the sealing cavity seals an air vent of a to-be-tested component; the guide structure is arranged between the shaft connecting structure and the sealing assembly and used for ensuring that the sealing assembly moves in the axial direction of the output shaft; the two ends of the pressure sensor are fixedly connected with the shaft connecting structure and the sealing assembly respectively, the pressure sensor is used for detecting the pressure in the axial direction of the output shaft, the pressure sensor is in communication connection with the driving mechanism, and the driving mechanism is used for stopping when the pressure is larger than a pressure threshold value. The sealing protection mechanism for testing can realize automatic sealing and protect the part to be tested.

Description

Technical Field

[0001] This utility model relates to the field of automatic sealing technology, and in particular to a sealing protection mechanism for testing. Background Technology

[0002] For some devices that require sealing performance, a sealing test is required. During the sealing test, the ports of the device are sealed, one port is left open for gas filling, and then the amount of gas leakage under specific conditions (such as a certain pressure and a certain time) is counted to determine its sealing performance.

[0003] In existing technologies, the ports of the device under test (DUT) that need to be sealed are typically sealed using a sealing structure, such as a sealing cap, before the measuring equipment is connected for testing. This method requires manual sealing, which is inefficient. Utility Model Content

[0004] One objective of this invention is to provide a sealing protection mechanism for testing that can achieve automatic sealing.

[0005] A further objective of this invention is to protect the component under test.

[0006] Another objective of this invention is to ensure that sealing tests are conducted efficiently and accurately.

[0007] Specifically, embodiments of this application provide a sealing protection mechanism for testing, comprising:

[0008] The drive mechanism has an output shaft that can be controllably reciprocated in the horizontal direction;

[0009] A shaft-connected structure is fixedly connected to the output shaft;

[0010] A sealing assembly having a sealing cavity inside, the sealing cavity extending through one end of the sealing assembly, the sealing cavity sealing the vent of the component under test;

[0011] A guide structure is disposed between the shaft connection structure and the sealing assembly to ensure that the sealing assembly moves axially along the output shaft;

[0012] A pressure sensor is fixedly connected at both ends to the shaft connection structure and the sealing assembly, respectively. The pressure sensor is used to detect the pressure along the axial direction of the output shaft. The pressure sensor is communicatively connected to the drive mechanism, which is used to stop the machine when the pressure is greater than the pressure threshold.

[0013] Furthermore, the sealing assembly includes:

[0014] The main body has an internal cavity that extends through one end of the main body and forms an opening.

[0015] An annular seal is disposed at the opening, and the annular seal is used to fit tightly against the outer peripheral surface of the vent of the component under test.

[0016] Furthermore, the guide structure includes:

[0017] The mounting base is fixedly connected to the output shaft, and a first mounting hole is provided in the mounting base;

[0018] A linear bearing is installed in the first mounting hole;

[0019] A guide shaft is installed inside the linear bearing and one end mates with the sealing assembly.

[0020] Furthermore, the main body is provided with a protruding first fastener on the side near the guide structure, and the first fastener is fixedly connected to the guide shaft.

[0021] Furthermore, the main body includes a connecting plate and a cylindrical body that are fixedly connected. The cylindrical body is provided with the cavity, and the connecting plate is provided with a countersunk hole for the first fastener to pass through.

[0022] Furthermore, the side of the countersunk hole near the guide structure includes a countersunk platform for accommodating a portion of the guide shaft.

[0023] Furthermore, an end seal is provided on the side of the linear bearing away from the sealing assembly, and the end seal and the guide shaft are connected by a second fastener. The projections of the end seal and the linear bearing on the axial direction of the output shaft overlap.

[0024] Furthermore, the test sealing protection mechanism also includes a fixing bracket for fixing the drive mechanism.

[0025] According to the first aspect of this application, the test sealing protection mechanism realizes automatic sealing of the sealing components, saving labor and improving testing efficiency.

[0026] Furthermore, the use of pressure sensors can prevent excessive travel of the drive mechanism, thereby protecting the component under test.

[0027] Furthermore, the guide structure can prevent the sealing assembly from deviating from the test component due to the deformation of the pressure sensor, thus ensuring that the sealing assembly can be aligned with the test component. This allows for efficient and accurate testing and prevents the sealing assembly from impacting the test component, thereby enabling it to function as the test component.

[0028] According to a second aspect of this application, the main body of the sealing assembly is configured as a split connecting plate and a cylindrical body, which facilitates the connection between the sealing assembly and the pressure sensor, and between the sealing assembly and the guide structure, without compromising the integrity of the sealing cavity, thereby ensuring the sealing performance of the sealing cavity. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a test sealing protection mechanism according to an embodiment of the present invention;

[0030] Figure 2 yes Figure 1 Cross-sectional view of the test sealing protection mechanism and the component under test in the embodiment;

[0031] Figure 3 yes Figure 1 Cross-sectional view of the test sealing protection mechanism at the pressure sensor in the embodiment;

[0032] Figure 4 This is a cross-sectional view of the test sealing protection mechanism according to an embodiment of the present invention at the guide structure.

[0033] Figure label:

[0034] 100-Test sealing protection mechanism, 10-Drive mechanism, 11-Output shaft, 20-Shaft connection structure, 30-Sealing assembly, 301-Sealing cavity, 31-Main body, 311-Connecting plate, 312-Cylinder body, 302-Counterhole, 303-Counter platform, 32-Annular seal, 40-Guide structure, 41-Mounting base, 411-First mounting hole, 42-Linear bearing, 43-Guide shaft, 44-First fastener, 45-End seal, 46-Second fastener, 50-Pressure sensor, 501-Screw, 60-Fixed bracket, 200-Component under test, 210-Ventilation port. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0036] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] Figure 1 This is a schematic diagram of the structure of a test sealing protection mechanism 100 according to an embodiment of the present invention. Figure 2 yes Figure 1 Cross-sectional view of the test sealing protection mechanism 100 and the component under test 200 in the embodiment. Figure 3 yes Figure 1 A cross-sectional view of the test sealing protection mechanism 100 of the embodiment at the pressure sensor 50. (See figure) Figure 1 As shown, in one embodiment, the test sealing protection mechanism 100 includes a drive mechanism 10, a shaft connection structure 20, a sealing assembly 30, a guide structure 40, and a pressure sensor 50. The drive mechanism 10 has an output shaft 11 that can be controllably reciprocated in a horizontal direction. The drive mechanism 10 can be, for example, a linear motor, a rotary motor, or a transmission mechanism (lead screw, rack and pinion mechanism, etc.). The shaft connection structure 20 is fixedly connected to the output shaft 11. Figure 2 As shown, the sealing assembly 30 has a sealing cavity 301 inside, which extends through one end of the sealing assembly 30. The sealing cavity 301 seals the vent 210 of the component under test 200, i.e., the sealing cavity 301 covers the vent 210. The component under test 200 can be a single pipe or a device with a sealed pipeline. The sealing is achieved by connecting the sealing assembly 30 to the vent 210 of the sealed pipeline of the pipe or device. The guide structure 40 is disposed between the shaft connection structure 20 and the sealing assembly 30 to ensure that the sealing assembly 30 moves axially along the output shaft 11. That is, the guide structure 40 can be any existing limiting structure that ensures that the movement of the sealing assembly 30 relative to the shaft connection structure 20 is limited to the axial direction of the output shaft 11, such as the fit between a shaft and a sleeve. The two ends of the pressure sensor 50 are fixedly connected to the shaft connection structure 20 and the sealing assembly 30, respectively. In one embodiment, as shown... Figure 3As shown, the two ends of the pressure sensor 50 are connected to the shaft connection structure 20 and the sealing assembly 30 respectively by screws 501. The pressure sensor 50 is used to detect the pressure along the axial direction of the output shaft 11, that is, the pressure applied to it by the sealing assembly 30 and the shaft connection structure 20. The pressure sensor 50 is also in communicative connection with the drive mechanism 10, which is used to stop the machine when the pressure is greater than the pressure threshold.

[0039] During operation, the output shaft 11 of the drive mechanism 10 moves toward the component under test 200. By pre-setting the stroke amount, the output shaft 11 is controlled to move to a position that can seal the vent 210 of the component under test 200, thereby realizing the automatic sealing of the sealing assembly 30.

[0040] In certain scenarios, such as when the placement of the component under test 200 is off, or when the accuracy of the output shaft 11 fluctuates, the excessive stroke of the output shaft 11 of the drive mechanism 10 may damage the component under test 200. In this solution, the pressure sensor 50 is used to control the drive mechanism 10 to stop suddenly when the pressure is too high, thereby protecting the component under test 200.

[0041] Furthermore, since the pressure sensor 50 is directly connected to the shaft connection structure 20 and the sealing assembly 30, the pressure sensor 50 needs its own deformation to sense pressure (e.g., Figure 3 As shown in the diagram, the S-type tension / compression sensor 50, when the drive mechanism 10 moves the shaft connection structure 20, the pressure sensor 50, and the sealing assembly 30, will experience a certain degree of oscillation due to the inherent variability of the pressure sensor 50. This causes a positional shift in the sealing assembly 30 connected to it, affecting the alignment between the sealing assembly 30 and the component under test 200, resulting in the component under test 200 being unable to accurately insert into the sealing cavity 301 of the sealing assembly 30. Therefore, this solution also includes a guide structure 40 to ensure that the moving direction of the sealing assembly 30 always remains consistent with the axial direction of the output shaft 11 of the drive mechanism 10.

[0042] Therefore, the solution in this embodiment achieves automatic sealing of the sealing component 30, saving labor and improving detection efficiency.

[0043] Furthermore, the pressure sensor 50 can prevent the drive mechanism 10 from having an excessive stroke, thereby protecting the component under test 200.

[0044] Furthermore, the guide structure 40 can prevent the sealing assembly 30 from deviating from the test component 200 due to the deformation of the pressure sensor 50, thereby ensuring that the sealing assembly 30 can be aligned with the test component 200, so that the test can be carried out efficiently and accurately, and prevent the sealing assembly 30 from hitting the test component 200, thus playing the role of the test component 200.

[0045] The aforementioned drive mechanism 10 can be directly fixed to the test bench, or fixed to the test bench via a fixing bracket 60, thereby securing the drive mechanism 10. The height of the fixing bracket 60 is set such that the sealing assembly 30 can be aligned with the vent 210 of the component under test 200 simply by horizontal movement. Of course, in some embodiments, the fixing bracket 60 can be detachably connected to the test bench, or it can be placed directly on the test bench, using the weight of components such as the drive mechanism 10 to maintain its position.

[0046] In one embodiment, the sealing assembly 30 includes a main body 31 and an annular seal 32. The main body 31 has an internal cavity that extends through one end of the main body 31, forming an opening. The annular seal 32 is disposed at the opening and is used to fit tightly against the outer peripheral surface of the vent 210 of the component under test 200. The annular seal 32 can be made of a flexible material such as plastic or silicone; the specific material is not limited here, as long as it can provide a sealing effect. The annular seal 32 can be snap-fitted, bonded, or interference-fitted to the main body 31.

[0047] Furthermore, the main body 31 includes a connecting plate 311 and a cylindrical body 312 that are fixedly connected, with the cylindrical body 312 having a cavity. By providing a split main body 31, fasteners for connecting the pressure sensor 50 and the guide structure 40 can be placed inside the connecting plate 311. By providing countersunk holes on the connecting plate 311, the fasteners will not protrude from the side where the connecting plate 311 and the cylindrical body 312 meet, thus not damaging the cavity of the cylindrical body 312 and giving the cavity good sealing performance. The connection between the connecting plate 311 and the cylindrical body 312 allows the fasteners to pass through the connecting plate 311 and connect to the non-cavity area of ​​the cylindrical body 312, ensuring the integrity of the cavity.

[0048] In other words, in this embodiment, the main body 31 of the sealing assembly 30 is configured as a split connecting plate 311 and a cylindrical body 312, which facilitates the connection between the sealing assembly 30 and the pressure sensor 50, and between the sealing assembly 30 and the guide structure 40, without damaging the integrity of the sealing cavity 301, thereby ensuring the sealing performance of the sealing cavity 301.

[0049] Figure 4 This is a cross-sectional view of the test sealing protection mechanism 100 according to an embodiment of the present invention at the guide structure 40. The first mounting hole 411 and the countersunk hole 302 are shown more clearly. Figure 4 The lower linear bearing 42, guide shaft 43, first fastener 44, end seal 45, and second fastener 46 are omitted. Figure 4As shown, in one embodiment, the guide structure 40 includes a mounting base 41, a linear bearing 42, and a guide shaft 43. The mounting base 41 is fixedly connected to the output shaft 11, and a first mounting hole 411 is provided in the mounting base 41, in which the linear bearing 42 is mounted. The guide shaft 43 is mounted in the linear bearing 42, and one end of it mates with the sealing assembly 30. For example, the guide shaft 43 extends into the hole of the sealing assembly 30, or the sealing assembly 30 has a shaft portion that extends into the hole of the guide shaft 43; this is not limited to any particular configuration.

[0050] In one embodiment, a countersunk hole 302 is provided at the connecting plate 311, and a first fastener 44 is disposed within the countersunk hole 302. One end of the first fastener 44 extending out of the connecting plate 311 is threadedly connected to the guide shaft 43, so that the guide shaft 43 is fixedly connected to the connecting plate 311. Further, an end seal 45 is provided on the side of the linear bearing 42 away from the sealing assembly 30. The end seal 45 and the guide shaft 43 are connected by a second fastener 46. The projections of the end seal 45 and the linear bearing 42 in the axial direction of the output shaft 11 overlap. Therefore, the end seal 45 can prevent the guide shaft 43 from dislodging from the linear bearing 42.

[0051] In a further embodiment, the countersunk hole 302 includes a countersunk platform 303 on the side near the guide structure 40 for accommodating a portion of the guide shaft 43. The countersunk platform 303 serves a positioning function during assembly, aligning the guide shaft 43 with the sealing assembly 30 and facilitating the installation of the first fastener 44.

[0052] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A sealing and protective mechanism for testing, characterized in that, include: The drive mechanism has an output shaft that can be controllably reciprocated in the horizontal direction; A shaft-connected structure is fixedly connected to the output shaft; A sealing assembly having a sealing cavity inside, the sealing cavity extending through one end of the sealing assembly, the sealing cavity sealing the vent of the component under test; A guide structure is disposed between the shaft connection structure and the sealing assembly to ensure that the sealing assembly moves axially along the output shaft; A pressure sensor is fixedly connected at both ends to the shaft connection structure and the sealing assembly, respectively. The pressure sensor is used to detect the pressure along the axial direction of the output shaft. The pressure sensor is communicatively connected to the drive mechanism, which is used to stop the machine when the pressure is greater than the pressure threshold.

2. The sealing and protection mechanism for testing according to claim 1, characterized in that, The sealing assembly includes: The main body has an internal cavity that extends through one end of the main body and forms an opening. An annular seal is disposed at the opening, and the annular seal is used to fit tightly against the outer peripheral surface of the vent of the component under test.

3. The sealing and protection mechanism for testing according to claim 2, characterized in that, The guiding structure includes: The mounting base is fixedly connected to the output shaft, and a first mounting hole is provided in the mounting base; A linear bearing is installed in the first mounting hole; A guide shaft is installed inside the linear bearing and one end mates with the sealing assembly.

4. The sealing and protection mechanism for testing according to claim 3, characterized in that, The main body is provided with a protruding first fastener on the side near the guide structure, and the first fastener is fixedly connected to the guide shaft.

5. The test sealing and protection mechanism according to claim 4, characterized in that, The main body includes a connecting plate and a cylindrical body that are fixedly connected. The cylindrical body has the cavity, and the connecting plate has a countersunk hole for the first fastener to pass through.

6. The test sealing and protection mechanism according to claim 5, characterized in that, The countersunk hole includes a countersunk platform on the side near the guide structure for accommodating a portion of the guide shaft.

7. The test sealing and protection mechanism according to claim 3, characterized in that, An end seal is provided on the side of the linear bearing away from the sealing assembly. The end seal and the guide shaft are connected by a second fastener. The projections of the end seal and the linear bearing on the axial direction of the output shaft overlap.

8. The test sealing and protection mechanism according to any one of claims 1-7, characterized in that, It also includes a fixing bracket for fixing the drive mechanism.

Images