Finished product testing device and performance testing method for seals

Abstract

The present invention provides a finished product test device and performance test method for seals, aiming to solve the problems of separation of test functions, insufficient device flexibility and incomplete performance verification in the prior art; the test device includes a door simulation, a door frame simulation, a sealing cavity cover plate, a guide rail, a guide rail pad and a fixed block, and the closing trajectory of the door is simulated by the guide rail system, and the gap and step difference are adjusted to adapt to the assembly state of different seals; the air tightness test pressurizes the cavity through the air inlet interface, monitors the leakage and evaluates the sealing performance; the rain test installs the spray device through the fixed bracket, sets the rainfall intensity and spray angle, and verifies the waterproof performance of the seal; the present invention supports performance evaluation under various test environments through modular design. The present invention has the advantages of multi-functional verification, simulation of actual working conditions, strong interchangeability of components, etc., and has broad application prospects and important practical value in the research and development and quality control of seals.

Description

Technical Field

[0001] The invention relates to the technical field of rubber product testing, and in particular to a sealing finished product testing device and a performance testing method. Background Art

[0002] In modern industrial manufacturing, door frame seals are key components and are widely used in aviation, high-speed rail, automobiles and other fields. They mainly play the role of airtightness, rain protection, shock absorption, noise reduction, etc. Door frame seals are installed between door frames and doors. The typical cross-sectional forms of door frame rubber seals are hollow structures such as P-shaped, Ω-shaped, and peach-shaped. They will produce large deformations under small stresses, effectively avoiding shear damage caused by excessive interference. At the same time, the requirements for the machining accuracy of the mechanical installation parts can be appropriately relaxed.

[0003] Door frame seals are not only required to have good functions, but also high reliability during development. Therefore, relevant finished product tests and verifications are required during the development of seals to ensure that the developed products meet the requirements of relevant working conditions. How to truly and effectively verify the functions of finished products, especially airtightness and rainproofing, the design and use of the device has become an urgent problem to be solved. Traditional finished product test devices (devices) have many shortcomings in verifying the performance of seals:

[0004] 1. Limited verification status: Existing devices can usually only verify the performance of seals in a certain fixed state, and cannot simulate different assembly states and usage states such as changes in the gap between the door frame and the door, changes in the step difference between the door frame and the door, and the height of the door protruding after the door is closed. These different step differences and gap changes have different requirements for the use of seals, so existing devices cannot fully evaluate the performance of seals;

[0005] 2. Single function: Existing devices can often only verify a single function, such as airtightness test or rain test, and cannot verify multiple functions at the same time, resulting in low device utilization, lack of integration between multiple performance tests, separate testing of different test functions, and time-consuming and labor-intensive equipment switching. Common means of existing seal performance testing methods include pressure testing and rain testing. In the pressure test, a certain air pressure is applied inside the cavity of the seal to evaluate the airtightness of the seal. The rain test simulates natural rainfall to observe the leakage of the seal under the impact of water flow to verify its waterproof performance. However, these test methods are usually carried out separately, and different performances require different test devices. For example, common pressure test equipment uses a closed cavity and is connected to an air source, while rain test equipment uses a spray device to expose the seal. Due to the independent functions between the test equipment, the test process often requires multiple switching of devices, which increases the test time and cost.

[0006] 3. Greatly affected by boundaries: Existing devices can usually only verify the function of a local section of the seal. The door frame selects a straight section on one side for verification. During the verification process, the end of the straight section is sealed with the device by bonding or other means. Only the use effect of the straight section seal is verified, and the use effect of the corner cannot be verified. During the sealing function verification, in order to prevent leakage at the end of the straight section seal, the end of the straight section seal is fixed and sealed. The sealing effect is greatly affected by the boundary conditions and cannot fully reflect the overall performance of the seal;

[0007] 4. Deviation from actual working conditions: The design of existing devices often deviates from the actual working conditions, such as motion trajectory, local structural features (bends, chamfers, stops, etc.), etc., which leads to inaccurate verification results. Generally, motion trajectory simulation is not performed, and the dimensions of bends, chamfers, stops, etc. are simplified.

[0008] 5. Poor interchangeability of components: The components of existing devices are usually not interchangeable and can only be used to verify the performance of a single seal structure, and cannot adapt to the test of seals of different sizes and structures;

[0009] 6. Complex processing: The processing process of existing devices is usually complicated, requiring multiple sets of structural five-axis processing or 3D processing. The five-axis processing of some small parts is complicated, and the 3D printing cost of some large parts is high, resulting in high processing costs.

[0010] 7. Narrow verification conditions: Current testing methods are mostly based on room temperature, and lack verification of the performance of seals under special environmental conditions such as extreme temperature or high humidity. They cannot reflect the performance of seals in extreme environments, thus limiting the scope of application of the test results.

[0011] Therefore, there is an urgent need for a finished seal test device and a performance test method that can overcome the deficiencies of the prior art and provide a reliable means for a comprehensive evaluation of seal performance. Summary of the invention

[0012] The present invention provides a comprehensive test method for the air tightness and rain performance of a finished sealing part, which solves the problems in the prior art of limited verification state, single function, great influence by boundaries, deviation from actual working conditions, poor interchangeability of components, complex processing and narrow verification conditions.

[0013] In order to achieve the above object, the technical solution of the present invention is as follows:

[0014] The finished product test device of the sealing part includes a door simulation part, a door frame simulation part, a cover plate, a guide rail, a slide bar, a fixed block and a limit block. The door simulation part is fixedly connected to the fixed block. The fixed block is an "I"-shaped structure. The four ends of the "I"-shaped fixed block are connected with slide bars. The sealing part is installed on the door simulation part. The door frame simulation part is fixed on the cover plate. Four guide rails are arranged around the door frame simulation part on the cover plate to simulate the door closing track for the fixed block. The guide rail is fixedly connected to the cover plate. The guide rail is provided with a door closing track groove matched with the slide bar. The state of the door simulation part after closing the door along the guide rail is fixed by the limit block. The lower cavity for leakage test or the fixed bracket for rain test is installed at the bottom of the cover plate. By adding and reducing the guide rail pads and replacing the guide rails, the gap and step difference between the door frame and the door can be flexibly adjusted, and the comprehensive verification of the sealing part in different assembly states and use states is realized.

[0015] Furthermore, a mounting groove and a stopper for mounting a seal are provided on the door simulation. The mounting groove and the stopper are small, special-shaped parts that achieve the same local structural features (angles, chamfers) as the actual working conditions. The mounting groove is used to mount the seal, and the stopper is used to reduce the local gap and prevent the seal from excessive deformation, thereby ensuring the stability and accuracy of the seal during the test and improving the reliability of the test results.

[0016] Furthermore, a guide rail positioning hole is provided on the guide rail, a guide rail positioning pin is provided on the cover plate, and a guide rail positioning pin is installed in the guide rail positioning hole. The guide rail positioning hole and the guide rail positioning pin cooperate to define the corresponding position of the guide rail on the cover plate, ensure the stability and accuracy of the guide rail, prevent deviation or shaking during the test, and improve the accuracy of the test.

[0017] Furthermore, a guide rail pad is provided between the guide rail and the cover plate. The guide rail pad includes several different height sizes. When adjusting the step difference, the guide rail pads under the four guide rails are adjusted. No guide rail pads are installed, guide rail pads of different heights are installed, and guide rail pads of different heights are stacked. The height of the guide rail pad represents the amount of the step difference. The guide rail positioning holes and the guide rail positioning pins cooperate to define the corresponding positions of the guide rails on the cover plate. The guide rails include guide rails with guide rail positioning holes at different positions. By replacing the guide rails, the relative positions of the rails and the positioning holes are changed to adjust different gaps. To adjust the lower and upper side gaps, replace the guide rail to adjust the upper side to a positive gap, and replace the guide rail to adjust the lower side to a negative gap; replace the guide rail to adjust the upper side to a negative gap, and replace the guide rail to adjust the lower side to a positive gap; adjust the gaps on both sides, replace one side of the guide rail to a positive gap, and replace the other side of the guide rail to a negative gap. Different assembly steps and gaps can be simulated, further expanding the test scope and improving the comprehensiveness of the test.

[0018] Furthermore, the fixed block is an "I"-shaped structure, with sliding rods respectively provided at the four ends of the fixed block, a door closing trajectory groove matching the sliding rods is provided on the guide rail, and a handle is provided on the fixed block; the guide rail is designed completely according to the door closing motion trajectory of the use device, ensuring that the grooves, stops and pressure pieces of the seal in the compressed state are completely consistent with the use conditions, thereby improving the accuracy of the test.

[0019] Furthermore, an air inlet interface is provided on the cover plate; a pressure limiting valve interface is provided on the cover plate; and a pressure gauge interface is provided on the cover plate; the necessary interfaces and equipment are provided for air tightness testing, making the testing process more convenient and efficient. The air inlet interface is used to connect the flow meter and provide air inlet pressure. When the test pressure is stable, the increased air inlet flow is the leakage, and the sealing effect is evaluated by the leakage flow; the pressure limiting range of the pressure limiting valve is determined according to the load that the tooling screw can bear and the maximum pressure required for the air tightness test; the pressure gauge is fixed at the pressure gauge interface to measure the pressure under the test state.

[0020] The performance test method of the finished seal test device, wherein the airtightness test comprises the following steps:

[0021] Door tooling assembly assembly: fix the installation slot and the stopper to the door simulation by screws, apply sealant to the matching gap to ensure that there is no leakage during the test; fix the fixing block to the door simulation by screws; the two slide bars and the fixing block have a clearance fit, preferably H7 / f6;

[0022] Assembly of door frame tooling components: The door frame simulation is fixed to the cover plate by screws, and sealant is applied to the matching gap to ensure that there is no leakage during the test; the cover plate is fixed to the lower cavity by screws, and the screws are evenly distributed around the cover plate. Sealant is applied to the matching gap to ensure that there is no leakage during the test; the guide rail positioning hole cooperates with the guide rail positioning pin to realize the positioning of the guide rail on the cover plate, and a guide rail pad is added between the guide rail and the cover plate, and the guide rail and the cover plate are fastened by screws;

[0023] Seal installation: insert the seal to be tested into the installation groove on the door simulation;

[0024] Door closing trajectory simulation: install the door simulation on the guide rail through the fixing block, use the slide bar to slide along the track of the guide rail to simulate the actual door closing process between the door frame simulation and the door simulation, and fix the door simulation along the guide rail with the limit block.

[0025] Cavity pressurization: Connect the air source through the air inlet interface on the sealed cavity cover, slowly inflate the cavity, observe the pressure through the pressure gauge connected to the pressure gauge interface until the pressure stabilizes at the set value, and monitor the pressure through the pressure limiting valve interface to ensure safety;

[0026] Leakage test: After the pressure stabilizes, the leakage data inside the cavity within the set time is recorded by the leakage test device;

[0027] Data analysis: By comparing the leakage data with the set standard, the airtight performance of the seal in the simulated closed door state is evaluated.

[0028] Furthermore, under the test environment temperature range of -60°C to 100°C, the cavity temperature is adjusted by an external heating or cooling device to verify the airtight performance of the seal at different temperatures.

[0029] Furthermore, by removing and replacing guide rail pads of different heights, the airtightness of the seal under different assembly step conditions is simulated, and by replacing guide rails at different positioning positions, the airtightness of the seal under different assembly gap conditions is simulated.

[0030] The performance test method of the finished seal test device, wherein the rain test includes the following steps:

[0031] Door tooling assembly assembly: fix the installation slot and the stopper to the door simulation by screws, apply sealant to the matching gap to ensure that there is no leakage during the test; fix the fixing block to the door simulation by screws; the two slide bars and the fixing block have a clearance fit, preferably H7 / f6;

[0032] Assembly of door frame tooling components: The door frame simulation is fixed to the cover plate by screws, and sealant is applied to the matching gap to ensure that there is no leakage during the test; the guide rail positioning hole is matched with the guide rail positioning pin to realize the positioning of the guide rail on the cover plate, and a guide rail pad is added between the guide rail and the cover plate, and the guide rail and the cover plate are fastened by screws;

[0033] Seal installation: insert the seal to be tested into the installation groove on the door simulation;

[0034] Door closing trajectory simulation: install the door simulation on the guide rail through the fixing block, use the slide bar to slide along the track of the guide rail to simulate the actual door closing process between the door frame simulation and the door simulation, and fix the door simulation along the guide rail with the limit block.

[0035] Installation of shower equipment: replace the lower cavity under the sealing cavity cover with a fixed bracket, install the shower device on the fixed bracket, and adjust the spraying angle and position to cover the key parts of the seal. The bracket 20 can be replaced, and the test device can be adjusted at different angles to verify the watertight performance under different working conditions. ;

[0036] Rain test: Spray continuously for 0.2h to 8h with a rainfall intensity ranging from 100mm / h to 1000mm / h, and observe whether rainwater leaks into the sealed cavity through a transparent tool on the observation side;

[0037] Data analysis: Leakage is recorded and the rain performance of the seal is evaluated based on the test results.

[0038] Furthermore, by removing and replacing guide rail pads of different heights, the rain performance of the seal under different assembly step conditions is simulated, and by replacing guide rails at different positioning positions, the rain performance of the seal under different assembly gap conditions is simulated.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. The present invention discloses a finished product testing device and a performance testing method for sealing components. The finished product testing device and the performance testing method for sealing components can flexibly adjust the gap between the door frame and the door and the step difference between the door frame and the door by adding and reducing guide rail pads and replacing guide rails with different positioning holes, thereby achieving comprehensive verification of the sealing components in different assembly states and use states; and solves the problem that the existing device can only verify a certain fixed state and has a small number of verification states.

[0041] 2. The present invention discloses a finished seal test device and a performance test method. The finished seal test device and the performance test method can verify both the airtightness and rainproof functions on the same device by simply assembling and disassembling different components, which significantly improves the utilization rate of the device, reduces the number of times the product is disassembled and replaced, and reduces the test cost.

[0042] 3. The present invention discloses a finished seal test device and a performance test method. The finished seal test device and the performance test method are designed according to the actual form of the door and the door frame, and can verify the status of the seal on the entire door, rather than just a local section, without the need for end fixation; the influence of boundary conditions on the verification results is avoided, making the verification results more accurate and reliable.

[0043] 4. The present invention discloses a finished product testing device and a performance testing method for sealing components. The finished product testing device and the performance testing method for sealing components are designed completely according to the door closing motion trajectory of the device in use. The grooves, stops and pressure pieces of the sealing components in the compressed state are completely consistent with the use conditions. This solves the problem that the existing devices deviate from the use conditions and cannot be accurately verified.

[0044] 5. The invention discloses a seal finished product test device and performance test method, which consists of different components fixed together by screws and sealant. By replacing some parts, it can adapt to seal tests of different working conditions and sizes. This improves the flexibility and versatility of the device and reduces the test cost.

[0045] 6. The present invention discloses a finished seal test device and a performance test method. The finished seal test device and the performance test method adopt different processing forms according to the functional requirements and processing difficulty of the parts. For parts with complex structures but small volume, such as installation grooves and stops, 3D printing is used; for other parts, especially pressure-bearing parts, mechanical processing is used; the strength and precision of the structure are guaranteed, and the processing cost is saved.

[0046] 7. The present invention discloses a sealing finished product testing device and performance testing method, which places the testing device in a box, provides an ambient temperature range of -60°C to 100°C and a humidity below 98%, and conducts tests in the box, thus broadening the verification environment conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a flow chart of the method of embodiment 1 of the present invention;

[0048] Figure 2 This is a schematic diagram of the three-dimensional structure of a finished seal testing device according to Example 1 of the present invention;

[0049] Figure 3 A top view of a finished seal testing device according to Example 1 of the present invention;

[0050] Figure 4 It is a front view of a sealing finished product testing device according to Example 1 of the present invention;

[0051] Figure 5 It is a right side view of a sealing finished product testing device according to Example 1 of the present invention;

[0052] Figure 6 for Figure 3 Middle AA section view;

[0053] Figure 7 for Figure 3 Middle BB section view;

[0054] Figure 8 for Figure 6 Enlarged view at center C;

[0055] Fig. 9 for Figure 6 Enlarged view of D in the middle Figure 2 ;

[0056] Fig.10 is a flow chart of the method of embodiment 2 of the present invention;

[0057] Fig.11 This is a schematic diagram of the three-dimensional structure of a finished seal testing device according to Embodiment 2 of the present invention;

[0058] Fig.12 A cross-sectional view of a sealing finished product testing device according to Embodiment 2 of the present invention;

[0059] Fig.13 This is a schematic diagram of the use of a sealing finished product testing device according to Example 2 of the present invention.

[0060] The components represented by the reference numerals in the figure are:

[0061] The present invention includes: 1. a sealing member; 2. a door simulation member; 3. a door frame simulation member; 4. a cover plate; 5. a lower cavity; 6. a guide rail; 7. a guide rail pad; 9. a slide rod; 10. a fixing block; 11. a handle; 12. a mounting groove; 13. a stop member; 14. an air inlet interface; 15. a pressure limiting valve interface; 16. a pressure gauge interface; 17. a limit block; 18. a guide rail positioning pin; 19. a guide rail positioning hole; 20. a fixing bracket. DETAILED DESCRIPTION

[0062] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0063] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0064] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0065] Embodiment 1:

[0066] The following Example 1 specifically describes the structural composition and operation steps of the airtightness test device, and tests the airtightness performance of the seal by simulating the closing trajectory and cavity pressurization process of the seal under actual use conditions.

[0067] See also Figure 1-Figure 9 A sealing finished product test device and performance test method, the airtight finished product test device includes a sealing part 1, a door simulation part 2, a door frame simulation part 3, a sealing cavity cover plate 4, a lower cavity 5, a guide rail 6, a guide rail pad 7, a slide bar 9, a fixing block 10, a handle 11, a mounting groove 12, a stopper 13, an air inlet interface 14, a pressure limiting valve interface 15, a pressure gauge interface 16, a limit block 17, a guide rail positioning pin 18 and a guide rail positioning hole 19. The airtightness test method includes the following steps:

[0068] Step 1: Door Tooling Assembly

[0069] The mounting groove 12 and the stopper 13 are fixed to the door simulation part 2 by screws, and sealant is applied to the fitting gap. There is a gap between the metal fittings. The presence of sealant ensures that the gas will not leak during the test; the fixing block 10 is fixed to the door simulation part 2 by screws; the four ends of the "I"-shaped fixing block are matched with the two sliding rods 9 with a clearance of H7 / f6.

[0070] Step 2: Assemble the door frame tooling components

[0071] The door frame simulation part 3 is fixed to the cover plate 4 by screws, and sealant is applied to the matching gap to ensure that there is no leakage during the test;

[0072] The cover plate 4 is fixed to the lower cavity 5 by screws. The screws are evenly distributed around the cover plate 4. The screw size is M14 or above and there are 8 screws. Apply sealant to the matching gap to ensure that there is no leakage during the test. A sealing ring can also be used for sealing;

[0073] The guide rail 6 is positioned on the cover plate 4 by cooperating with the guide rail positioning hole 19 and the guide rail positioning pin 18. A guide rail pad 7 is added between the guide rail 6 and the cover plate 4, and the guide rail 6 and the cover plate 4 are fastened by screws. The airtight performance of the seal under different assembly step conditions is simulated by removing and replacing the guide rail pad 7 of different heights, and the airtight performance of the seal under different assembly gap conditions is simulated by replacing the guide rail 6 at different positioning positions.

[0074] Table 1 Example of step difference positioning

[0075] Thickness of guide rail pad 7 Verification Status 0 -2 order difference 2mm 0-order difference 4mm +2 order difference 6mm +4th order difference

[0076] Table 2 Gap positioning example

[0077]

[0078] The air inlet interface 14 reserved on the sealing cavity cover plate 4 is connected to the air inlet assembly for inputting the test gas. The pressure limiting valve interface 15 is used to install the pressure limiting valve to protect the pressure safety of the cavity. The pressure gauge interface 16 is connected to the pressure gauge to monitor the pressure in the cavity in real time. The air inlet interface is used to connect the flow meter and provide the air inlet pressure. The air compressor provides the air inlet pressure. When the test pressure is stable at 100kpa, the increased air inlet flow is the leakage. The sealing effect is evaluated by the leakage flow. The pressure limiting valve is 200kpa. The pressure gauge is fixed at the pressure gauge interface to measure the pressure under the test state.

[0079] Step 3: Seal Installation

[0080] Insert the seal 1 to be tested into the installation groove 12 on the door simulation part 2, and ensure that the seal 1 is completely fitted into the installation groove 12;

[0081] Step 4: Door closing trajectory simulation

[0082] The door simulation member 2 is installed on the guide rail 6 through the fixing block 10, and the slide bar 9 is used to slide along the track of the guide rail 6 to simulate the actual door closing process between the door frame simulation member 3 and the door simulation member 2), and the state of the door simulation member 2 after closing along the guide rail 6 is fixed by the limit block 17;

[0083] Step 5: Pressurize the Chamber

[0084] The air source is connected through the air inlet interface 14 on the sealed cavity cover plate 4, and the air compressor provides the air inlet pressure. The air source first passes through the flow meter, and then enters the test device, and the cavity is slowly inflated, and the pressure gauge connected to the pressure gauge interface 16 is observed. In addition, the following tests can also be performed:

[0085] The test device is at room temperature to verify the sealing effect at room temperature.

[0086] When the test device is placed in an oven at -60°C, the sealing effect at -60°C is verified.

[0087] When the test device is placed in an oven at +100°C, the sealing effect at 100°C is verified.

[0088] The test device was placed in an oven at -60°C and 30% humidity to verify the sealing effect at -60°C and 30% humidity.

[0089] When the test device is placed in an oven at a temperature of +30°C and a humidity of 95%, the sealing effect at a temperature of 30°C and a humidity of 30% is verified;

[0090] Step 6: Leakage test

[0091] When the test pressure stabilizes at 100kpa and the pressure is stable for 10 minutes, the leakage data inside the cavity within the set time is recorded by the leakage test device, and the test reading is L / min;

[0092] Step 7: Data Analysis

[0093] Calculate and record the leakage data inside the cavity, compare the leakage data with the set standard, and evaluate the airtight performance of the seal in the simulated closed door state.

[0094] This embodiment describes in detail the assembly, operation and testing process of the airtight test device. Through the reasonably designed door simulation parts, door frame simulation parts, guide rail system and sealing cavity and other components, the working conditions of the seal under actual use are accurately simulated. By installing limit blocks to limit the range of motion of the door simulation parts, using guide rail positioning pins to achieve precise positioning, combined with the coordination of the air inlet interface and the pressure gauge interface, the stability and reliability of the test process are effectively ensured.

[0095] In actual operation, the test device can flexibly adjust the rail pads and assembly gaps to adapt to the requirements of seals of different sizes and shapes. It also has modular design features, making assembly and disassembly of components more convenient. Through pressure stability monitoring and leakage measurement, quantitative evaluation of the airtightness of the seal is achieved, and the test results have high precision and high repeatability. The design of this embodiment not only improves the test efficiency, but also significantly reduces the test error, and has good practicality and promotion value.

[0096] Embodiment 2:

[0097] The following Example 2 describes in detail the structural configuration of the rain test device and its use steps, and comprehensively evaluates the waterproof performance of the seal by simulating rainfall intensity and spraying angle.

[0098] See also Figure 10-12 A sealing finished product test device and performance test method, the rain test device includes a sealing part 1, a door simulation part 2, a door frame simulation part 3, a sealing cavity cover plate 4, a guide rail 6, a guide rail pad 7, a slide bar 9, a fixing block 10, a handle 11, a mounting groove 12, a stopper 13, a limit block 17, a guide rail positioning pin 18 and a guide rail positioning hole 19, and a fixing bracket 20. The rain test method includes the following steps:

[0099] Step 1: Door Tooling Assembly

[0100] The mounting groove 12 and the stopper 13 are fixed to the door simulation part 2 by screws, and the sealant is applied to the matching gap. There is a gap between the metal fittings. The presence of the sealant ensures that the gas will not leak during the test; the fixing block 10 is fixed to the door simulation part 2 by screws; the four ends of the "I"-shaped fixing block and the two slide bars 9 adopt H7 / f6 clearance matching

[0101] Step 2: Assemble the door frame tooling components

[0102] The door frame simulation part 3 is fixed to the cover plate 4 by screws, and sealant is applied to the matching gap to ensure that there is no leakage during the test;

[0103] The guide rail 6 is positioned on the cover plate 4 by cooperating with the guide rail positioning hole 19 and the guide rail positioning pin 18. A guide rail pad 7 is added between the guide rail 6 and the cover plate 4, and the guide rail 6 and the cover plate 4 are fastened by screws. The airtight performance of the seal under different assembly step conditions is simulated by removing and replacing the guide rail pad 7 of different heights, and the rain performance of the seal under different assembly gap conditions is simulated by replacing the guide rail 6 at different positioning positions.

[0104] Table 3 Example of step difference positioning

[0105] Thickness of guide rail pad 7 Verification Status 0 -2 order difference 2mm 0-order difference 4mm +2 order difference 6mm +4th order difference

[0106] Table 4 Gap positioning example

[0107]

[0108] Step 3: Seal Installation

[0109] Insert the seal 1 to be tested into the mounting groove 12 on the door simulation part 2;

[0110] Step 4: Door closing trajectory simulation

[0111] The door simulation member 2 is installed on the guide rail 6 through the fixing block 10, and the slide bar 9 is used to slide along the track of the guide rail 6 to simulate the actual door closing process between the door frame simulation member 3 and the door simulation member 2, and the state of the door simulation member 2 after closing along the guide rail 6 is fixed by the limit block 17;

[0112] Step 5: Rain shower equipment installation

[0113] The sealing chamber cover plate 4 is fixed on the fixing bracket 20, and the shower device is installed on the fixing bracket 20. The angle of the bracket 20 is 70 degrees.

[0114] Step 6: Rain Test

[0115] Spray continuously for 8 hours at a rainfall intensity of 200 mm / h, and use a transparent tool on the observation side to observe whether rainwater leaks into the sealed cavity;

[0116] Step 7: Data Analysis

[0117] Record whether there is water leakage and the amount of leakage, and the leakage amount is collected by double counting.

[0118] This rain test method can perform multi-state verification and overall performance verification on seals, effectively simulating actual working conditions; the device it relies on has the characteristics of strong component interchangeability and economical processing, and can achieve multi-functional verification and high-precision testing. It has broad application prospects and important practical value in the development process of seals.

[0119] Embodiment 3:

[0120] The comprehensive test device for air tightness and rain performance of finished sealing parts based on Example 1 and Example 2 mainly includes a door simulation part 2, a door frame simulation part 3, a cover plate 4, a lower cavity 5 (or a fixed bracket 20 for rain test, depending on the test requirements), a guide rail 6, a guide rail pad 7, an installation groove 12, a stopper 13, a slide rod 9, a fixed block 10, a guide rail positioning hole 19, a guide rail positioning pin 18, a handle, an air inlet interface 14, a pressure limiting valve interface 15 and a pressure gauge interface 16 and other components.

[0121] The door frame simulation member 3 is firmly fixed at a predetermined position of the cover plate 4 to simulate the structure of an actual door frame.

[0122] The door simulation part 2 is connected by a fixing block 10. The fixing block 10 is designed as an "I"-shaped structure to enhance its stability and load-bearing capacity. Slide bars 9 are respectively installed at the four ends of the fixing block 10. These slide bars 9 slide in the door closing track groove of the guide rail 6 to simulate the opening and closing action of the door.

[0123] The sealing member 1 is mounted on the door simulation member 2, and is specifically fixed by means of a mounting groove 12 and a stop member 13 provided on the door simulation member 2, so as to ensure that the sealing member will not fall off or shift during the test.

[0124] In order to perform leakage test, a lower cavity 5 is installed at the bottom of the cover plate 4; if a rain test is required, it can be replaced with a fixed bracket 20 to meet different test requirements.

[0125] The guide rails 6 are fixedly connected to the cover plate 4 , and four guide rails 6 are arranged around the door frame simulation component 3 to provide simulation of the door closing trajectory for the fixed block 10 and the door simulation component 2 .

[0126] Between the guide rail 6 and the cover plate 4 , a number of guide rail pads 7 of different heights may be installed according to different test requirements to adjust the height and position of the guide rail 6 .

[0127] In order to ensure the accuracy and stability of the guide rail 6 , guide rail positioning holes 19 are provided at positions corresponding to the guide rail 6 and the cover plate 4 , and guide rail positioning pins 18 are installed therein.

[0128] A handle 11 is provided on the fixing block 10 for easy operation, so that the tester can manually operate the switch of the door simulation component 2 .

[0129] An air inlet interface 14 is provided on the cover plate 4 for filling the interior of the device with test gas or liquid.

[0130] In order to ensure safety during the test, a pressure limiting valve interface 15 is also provided on the cover plate 4. When the internal pressure exceeds a set value, the pressure limiting valve will automatically open to release the pressure.

[0131] At the same time, a pressure gauge interface 16 is also provided on the cover plate 4 for real-time monitoring of pressure changes inside the device.

[0132] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. The finished product testing device of sealing parts is characterized by: The invention comprises a door simulation component (2), a door frame simulation component (3), a cover plate (4), a guide slide rail (6), a slide rod (9), a fixed block (10) and a limit block (17); the door simulation component (2) is fixedly connected to the fixed block (10); the fixed block (10) is an "I"-shaped structure; the four ends of the "I"-shaped fixed block (10) are connected to the slide rod (9); the sealing component (1) is installed on the door simulation component (2); the door frame simulation component (3) is fixed on the cover plate (4); and the door is fixedly connected to the cover plate (4). Four guide rails (6) are arranged around the frame simulation part (3) for simulating the door closing trajectory for the fixed block (10); the guide rails (6) are fixedly connected to the cover plate (4); a door closing trajectory groove matched with the slide bar (9) is arranged on the guide rails (6); the door simulation part (2) is fixed along the guide rails (6) in a closed state by a limit block (17); and a lower cavity (5) for leakage test or a fixed bracket (20) for rain test is installed at the bottom of the cover plate (4).

2. The sealing finished product testing device according to claim 1, characterized in that: A mounting groove (12) and a stopper (13) are provided on the door simulation component (2), and the sealing component (1) is mounted on the mounting groove (12).

3. The seal product testing device according to claim 1, characterized in that: A guide rail positioning hole (19) is provided on the guide rail (6), a guide rail positioning pin (18) is provided on the cover plate (4), and the guide rail positioning pin (18) is installed in the guide rail positioning hole (19).

4. The seal product testing device according to claim 1, characterized in that: A guide rail pad (7) is arranged between the guide rail (6) and the cover plate (4); the guide rail pad (7) has a plurality of different height sizes; and the guide rail (6) has guide rail positioning holes (19) at different positions.

5. The finished seal testing device according to claim 1, characterized in that: An air inlet interface (14) is provided on the cover plate (4); a pressure limiting valve interface (15) is provided on the cover plate (4); and a pressure gauge interface (16) is provided on the cover plate (4).

6. A performance testing method for a finished seal product testing device according to any one of claims 1 to 5, characterized in that: The air tightness test includes the following steps: Assembly of the door tooling assembly: fix the mounting groove (12) and the stopper (13) to the door simulation (2) by screws, apply sealant to the matching gap to ensure that there is no leakage during the test; fix the fixing block (10) to the door simulation (2) by screws; the two slide bars (9) and the fixing block (10) have a clearance fit, preferably H7 / f6; Assembly of door frame tooling components: the door frame simulation part (3) is fixed to the cover plate (4) by screws, and sealant is applied to the fitting gap to ensure that there is no leakage during the test; the cover plate (4) is fixed to the lower cavity (5) by screws, and the screws are evenly distributed around the cover plate (4), and sealant is applied to the fitting gap to ensure that there is no leakage during the test; the guide rail positioning hole (19) is matched with the guide rail positioning pin (18) to achieve the positioning of the guide rail (6) on the cover plate (4), and a guide rail pad (7) is added between the guide rail (6) and the cover plate (4), and the guide rail (6) and the cover plate (4) are fastened by screws; Sealing component installation: inserting the sealing component (1) to be tested into the installation groove (12) on the door simulation component (2); Door closing trajectory simulation: the door simulation component (2) is mounted on the guide rail (6) via a fixing block (10), and the slide bar (9) is used to slide along the trajectory of the guide rail (6) to simulate the actual door closing process between the door frame simulation component (3) and the door simulation component (2), and the state of the door simulation component (2) after closing along the guide rail (6) is fixed by a limit block (17); Cavity pressurization: connect the air source through the air inlet interface (14) on the sealed cavity cover plate (4), slowly inflate the cavity, observe the pressure through the pressure gauge connected to the pressure gauge interface (16) until the pressure stabilizes at the set value, and monitor the pressure through the pressure limiting valve interface (15) to ensure safety; Leakage test: After the pressure stabilizes, the leakage data inside the cavity within the set time is recorded by the leakage test device; Data analysis: By comparing the leakage data with the set standard, the airtight performance of the seal under the simulated closed door state is evaluated.

7. The performance testing method of the finished seal product testing device according to claim 6, characterized in that: Under the condition that the test environment temperature ranges from -60°C to 100°C, the cavity temperature is adjusted by an external heating or cooling device to verify the airtight performance of the sealing member (1) at different temperatures.

8. The performance testing method of the finished seal product testing device according to claim 6, characterized in that: By removing and replacing guide rail pads (7) of different heights, the airtightness of the seal under different assembly step difference conditions is simulated, and by replacing guide rails (6) at different positioning positions, the airtightness of the seal under different assembly gap conditions is simulated.

9. The performance testing method based on the seal finished product testing device according to claim 6 is characterized in that: The rain test includes the following steps: Assembly of the door tooling assembly: fix the mounting groove (12) and the stopper (13) to the door simulation (2) by screws, apply sealant to the matching gap to ensure that there is no leakage during the test; fix the fixing block (10) to the door simulation (2) by screws; the two slide bars (9) and the fixing block (10) have a clearance fit, preferably H7 / f6; Assembly of door frame tooling components: the door frame simulation part (3) is fixed to the cover plate (4) by screws, and sealant is applied to the fitting gap to ensure that there is no leakage during the test; the guide rail (6) is positioned on the cover plate (4) by cooperating with the guide rail positioning hole (19) and the guide rail positioning pin (18), and a guide rail pad (7) is added between the guide rail (6) and the cover plate (4), and the guide rail (6) and the cover plate (4) are fastened by screws; Sealing component installation: inserting the sealing component (1) to be tested into the installation groove (12) on the door simulation component (2); Door closing trajectory simulation: the door simulation component (2) is mounted on the guide rail (6) via a fixing block (10), and the slide bar (9) is used to slide along the trajectory of the guide rail (6) to simulate the actual door closing process between the door frame simulation component (3) and the door simulation component (2), and the state of the door simulation component (2) after closing along the guide rail (6) is fixed by a limit block (17); Installation of shower equipment: replace the lower cavity (5) below the sealing cavity cover (4) with a fixed bracket (20), install the shower device on the fixed bracket (20), and adjust the spraying angle and position to cover the key parts of the seal; Rain test: Spray continuously for 0.2h to 8h with a rainfall intensity ranging from 100mm / h to 1000mm / h, and observe whether rainwater leaks into the sealed cavity through a transparent tool on the observation side; Data analysis: Leakage is recorded and the rain performance of the seal is evaluated based on the test results.

10. The performance testing method of the finished seal product testing device according to claim 9, characterized in that: By removing and replacing guide rail pads (7) of different heights, the rain performance of the seal under different assembly step conditions is simulated, and by replacing guide rails (6) at different positioning positions, the rain performance of the seal under different assembly gap conditions is simulated.

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