A sealing part compression load deformation curve testing device and testing method

Abstract

The application discloses a kind of sealing parts compression load deformation curve testing device and testing method, the device can include first connection installation unit, the first connection installation unit includes lower end connection bottom and lower end mounting seat, the lower end connection bottom is connected with the lower end mounting seat;The lower end connection bottom is provided with the first T-shaped groove extending along its long direction in axial direction;First I-shaped connecting block is arranged in the first T-shaped groove.The sealing parts compression load deformation curve testing device provided in the application can solve the determination and analysis problem of CLD value of various type corner window matching surface sealing system, according to different testing purposes and requirements, the upper end testing profiling block unit can be simplified to a simple straight line type pressing block, and the pressing of the space curved surface of the part can also be performed.According to the application, after the part data is locked and the connecting unit is matched, the testing is easy to operate, and the reproducibility and repeatability are good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing performance test, in particular to a sealing part compression load deformation curve testing device and testing method. BACKGROUND

[0002] The automobile sealing strip has the function of filling the various gaps between the components of the vehicle body, and has the functions of shock absorption, waterproof, dustproof, sound insulation, decoration, etc., improving the comfort of driving and protecting the vehicle body. It can be divided into solid core products (circular, square, flat cross-sectional shape), hollow products and metal rubber composite products. Among them, the metal rubber composite sealing strip accounts for more than 60%. For the rubber sealing strip, the cross-sectional design is very important. First, the shape and size of the sealing lip are designed, and the two sealing lips should be in contact with the glass from both sides of the glass with the same appropriate force. The length and thickness of the lip should be appropriate, and excessive thickness and length will make the glass lifting resistance too large, and excessive thinness and shortness will lead to poor guidance and sealing of the glass, resulting in vibration, noise and rain leakage; second, the shape and size of the cross-sectional bottom are designed, and the cross-sectional bottom of the guide groove should be designed with corresponding structure, which is easy to assemble and can be attached to the steel guide groove by the elasticity of the sealing strip to prevent it from falling out; finally, the shape and size of the outer edge are designed, and the outer decorative surface of the guide groove should be closely combined with the vehicle body to improve the appearance.

[0003] The automobile corner window part also belongs to the automobile sealing strip, and is installed in the area position of the corner window installed on the rear door and the car, which plays a sealing role when the door is closed. Most of the shapes are relatively simple straight lines, and some are curved shapes. Such parts are relatively more commonly used in vehicle design.

[0004] In actual application, it is usually necessary to test the compression load deflection of the lip of the automobile corner window part. Due to the lack of corresponding test methods and test equipment in the prior art, the accuracy of the compression load deflection test is not high, especially for some products containing curved shapes, it is often difficult to obtain accurate test results. In addition, due to the possibility of improper closing of the window and the offset of the hinge position when the window is closed, it is difficult to simulate the occurrence of the above-mentioned situations by using the test method in the prior art, and it is impossible to test the compression load deflection of the lip when the above-mentioned situations occur. SUMMARY

[0005] The present application provides a sealing part compression load deformation curve testing device and testing method.

[0006] The present application provides the following scheme:

[0007] A sealing part compression load deformation curve testing device, comprising:

[0008] A first connecting mounting unit comprises a lower end connecting bottom and a lower end mounting seat, the lower end connecting bottom is connected with the lower end mounting seat; the lower end connecting bottom is provided with a first T-shaped groove extending in the axial direction along the long direction thereof; the first T-shaped groove is provided with a first I-shaped connecting block;

[0009] A second connecting mounting unit comprises an upper end connecting bottom and a pressing block; the upper end connecting bottom is connected with the pressing block; the upper end connecting bottom is provided with a second T-shaped groove extending in the axial direction along the long direction thereof; the second T-shaped groove is provided with a second I-shaped connecting block;

[0010] The first I-shaped connecting block is used to be connected with a first mounting groove of a universal tensile testing machine, gaps are formed between the two ends of the width direction of the first I-shaped connecting block and the first mounting groove, and the gaps are used to set a gasket with a target thickness; the second I-shaped connecting block is used to be connected with a second mounting groove of the universal tensile testing machine; the lower end mounting seat and the pressing block are used to accommodate a part to be tested.

[0011] Preferably, the lower end connecting bottom and the lower end mounting seat are provided with a first recess and a first avoiding hole on the same side respectively; the upper end connecting bottom and the pressing block are provided with a second recess and a second avoiding hole on the same side respectively;

[0012] An intermediate limiting block with a target fixed height is arranged between the first recess and the second recess, the target height is determined according to the theoretical gauge between the edge covering of the quarter window part in the body modeling and the handle, and the outer contour of the intermediate limiting block is matched with the inner contour of the first recess and the second recess.

[0013] Preferably, a contact surface of the pressing block and the part to be tested is formed with a profiled surface consistent with the handle modeling when the part is mounted.

[0014] Preferably, the lower end connecting bottom and the lower end mounting seat are connected in a one-side two-pin mode.

[0015] Preferably, the upper end connecting bottom and the pressing block are connected in a one-side two-pin mode combined with screw locking.

[0016] Preferably, the gasket is a copper gasket, and the target thickness is 1.5-2.0 mm.

[0017] Preferably, the upper part of the lower end mounting seat is provided with a plurality of positioning blocks for fixing the part to be tested.

[0018] A testing method applied to the above sealing part compression load deformation curve testing device, the method comprises:

[0019] The first connecting installation unit is connected with the lower test platform of the universal tensile testing machine through the first I-shaped connecting block, and the second connecting installation unit is connected with the upper test platform of the universal tensile testing machine through the second I-shaped connecting block;

[0020] The part to be tested is installed on the lower end mounting seat of the first connecting installation unit;

[0021] The relative positions of the first I-shaped connecting block and the first T-shaped groove and / or the relative positions of the second I-shaped connecting block and the second T-shaped groove are adjusted according to the size of the part to be tested, so as to realize the adjustment in the Y direction under the body coordinate system;

[0022] The target thickness of the gasket is determined according to the type of the test condition, and the test condition type includes a normal standard condition of the part connected with the opponent and an extreme condition of the part connected with the opponent;

[0023] After the gaps are formed between the two ends of the first I-shaped connecting block in the width direction and the first mounting groove, and the gaskets are arranged respectively, the universal tensile testing machine is started to make the pressing block contact with the part to be tested, so as to output the CLD force value data and the curve as the sealing performance index.

[0024] Preferably, after the gaps are formed between the two ends of the first I-shaped connecting block in the width direction and the first mounting groove, and the gaskets are arranged respectively, the zero position of the universal tensile testing machine in the Y direction under the body coordinate system is determined by the intermediate limiting block; the force value data and the curve under three conditions of ideal state, underfitting and overfitting are respectively tested according to the change of the hinge and the different contact depths of the opponent under the extreme door closing condition.

[0025] Preferably, the shape of the contact surface of the pressing block and the part to be tested is determined according to the shape of the sealing side lip of the part to be tested.

[0026] According to the specific embodiments provided by the present application, the following technical effects are disclosed:

[0027] By the present application, a sealing part compression load deformation curve testing device and testing method can be realized. In an implementation, the device can include a first connecting and mounting unit, which includes a lower end connecting bottom and a lower end mounting seat, and the lower end connecting bottom is connected with the lower end mounting seat; the lower end connecting bottom is provided with a first T-shaped groove extending in the axial direction along the long direction thereof; the first T-shaped groove is provided with a first I-shaped connecting block; a second connecting and mounting unit, which includes an upper end connecting bottom and a pressing block, and the upper end connecting bottom is connected with the pressing block; the upper end connecting bottom is provided with a second T-shaped groove extending in the axial direction along the long direction thereof; the second T-shaped groove is provided with a second I-shaped connecting block; wherein the first I-shaped connecting block is used to be connected with a first mounting groove of a universal tensile testing machine, and gaps are formed between the two ends of the width direction of the first I-shaped connecting block and the first mounting groove, and the gaps are used to set a gasket with a target thickness; the second I-shaped connecting block is used to be connected with a second mounting groove of the universal tensile testing machine; and the lower end mounting seat and the pressing block are used to accommodate a part to be tested. The sealing part compression load deformation curve testing device provided by the present application can solve the problem of measuring and analyzing the CLD value of different type corner window matching surface sealing systems. According to different testing purposes and requirements, the upper end testing profiling block unit can be simplified to a simple straight line type pressing block, or can be pressed according to the space curve of the part modeling. After the part data is locked and the connecting unit is matched, the device is easy to test and has good reproducibility and repeatability.

[0028] Of course, implementing any product of the present application does not necessarily require achieving all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0030] Figure 1 is a structural schematic diagram of a sealing part compression load deformation curve testing device provided by an embodiment of the present application;

[0031] Figure 2 is another structural schematic diagram of a sealing part compression load deformation curve testing device provided by an embodiment of the present application;

[0032] Figure 3is the schematic diagram of test results of the present embodiment when the hinge position changes and deviates (X ± 1.7 is taken as a reference), respectively tests the theoretical position and the test results under the two extreme conditions of Y compression (Y ± 0.5 is taken as a reference) in this case;

[0033] Figure 4 is the schematic diagram of force value changes caused by different X direction deviations after adding variable 6MM on the basis of Y 0 position of the present embodiment;

[0034] Figure 5 is the schematic diagram of the test tool structure in the prior art.

[0035] In the figure: the lower end connecting bottom 1, the first groove 11, the lower end mounting seat 2, the first avoiding hole 21, the first I-shaped connecting block 3, the upper end connecting bottom 4, the pressing block 5, the second avoiding hole 51, the second I-shaped connecting block 6, the gasket 7, the middle limiting block 8, and the part to be tested 9. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0037] EMBODIMENT

[0038] Referring to Figure 1 、 Figure 2 , the sealing part compression load deformation curve test device and test method provided by the present embodiment, as shown in Figure 1 、 Figure 2 , the device can include:

[0039] The first connecting and mounting unit includes a lower end connecting bottom 1 and a lower end mounting seat 2, and the lower end connecting bottom 1 is connected with the lower end mounting seat 2. The lower end connecting bottom 1 is provided with a first T-shaped groove extending in the axial direction along the long direction thereof. The first T-shaped groove is provided with a first I-shaped connecting block 3.

[0040] The second connecting and mounting unit includes an upper end connecting bottom 4 and a pressing block 5, and the upper end connecting bottom 4 is connected with the pressing block 5. The upper end connecting bottom 4 is provided with a second T-shaped groove extending in the axial direction along the long direction thereof. The second T-shaped groove is provided with a second I-shaped connecting block 6.

[0041] The first I-shaped connecting block 3 is used for being connected with the first installation slot of the universal tensile testing machine, gaps are formed between the wide direction two ends of the first I-shaped connecting block 3 and the first installation slot, and the gaps are used for arranging the gasket 7 with the target thickness; the second I-shaped connecting block 6 is used for being connected with the second installation slot of the universal tensile testing machine; and the lower end mounting seat 2 and the pressing block 5 are used for accommodating the part 9 to be tested.

[0042] The sealing part compression load deformation curve testing device provided by the embodiment of the application can be connected with the universal tensile testing machine to realize sealing property testing of the angular window sealing part in multiple states. Thus, a compression load deformation curve (CLD) is generated to indicate the sealing property of the angular window sealing part in various states after being connected with the counterpart. It is understood that the various states in the embodiment of the application refer to various situations that can occur when the angular window sealing part is connected with the counterpart, for example, can include a normal standard state and various extreme states. In the normal standard state, the door and the angular window sealing part are matched according to the set position, and at this time, the center line of the lower end mounting seat and the center line of the pressing block coincide in the Y direction of the vehicle body coordinate system by adjusting the thickness of the gasket to simulate this situation. The extreme state can include that the door is extremely stretched and deformed at the door connecting hinge to cause the matching position of the lip of the angular window sealing part and the counterpart on the door to change, and at this time, the center line of the lower end mounting seat and the center line of the pressing block are misaligned in the Y direction of the vehicle body coordinate system by adjusting the thickness of the gasket to simulate this situation.

[0043] In order to simulate that the pressure applied by the door to the angular window sealing part is different under different door closing forces, and the deformation of the angular window sealing part is different, the embodiment of the application can provide that the lower end connecting bottom 1 and the lower end mounting seat 2 are located on the same side and are respectively provided with a first recess 11 and a first avoiding hole 21; and the upper end connecting bottom 4 and the pressing block 5 are located on the same side and are respectively provided with a second recess (not shown in the figure) and a second avoiding hole 51.

[0044] The first recess 11 and the second recess are provided with an intermediate limiting block 8 with a target fixed height, the target height is determined according to the theoretical gauge between the edge covering of the angular window part and the counterpart in the vehicle body modeling; and the outer contour of the intermediate limiting block 8 is matched with the inner contours of the first recess 11 and the second recess. The intermediate limiting block can quickly center and find the 0 position of the testing machine, and the CLD values (relative to 0 position in the compression direction Y, micro-gap and interference fit position Y direction ± 0.5, Z direction avoiding the equipment machine body, relative position 0 up and down) in three conditions of ideal state, underfitting and overfitting are respectively tested according to the different depths of contact of the counterpart under the change of the hinge and the extreme door closing condition.

[0045] At present, there is no special tool for sealing test of corner window products in the industry, especially for glass edge sealing type corner window parts. Generally, it is for straight strips or sealing strips that can be straightened. In the prior art, a 100-long part is usually taken, and then the sealing strip is simulated by pressing the glass or other counterpart. The advantage is simple, but the disadvantage is that it needs to be straightened or can only be used for product samples before bending / twisting. The repeatability and accuracy are problematic, and there may be differences with the finished product. The pressing block provided in the embodiments of the present application can determine the shape of the contact surface according to the complexity of the sealing side lip shape of the corner window part. When the sealing side lip shape of the corner window part is complex, the contact surface of the pressing block and the part to be tested forms a profiling surface consistent with the shape of the counterpart when the part is loaded.

[0046] In order to facilitate the quick connection of each component, the lower end connecting bottom tire and the lower end mounting seat can be connected in a one-face-two-pin manner in the embodiments of the present application. The upper end connecting bottom tire and the pressing block are connected in a one-face-two-pin manner combined with screw locking.

[0047] The gasket provided in the embodiments of the present application is used to fix the first I-shaped connecting block after the relative position of the lower end mounting seat and the pressing block in the Y direction is determined. In order to ensure the stability after fixing and to select the thickness of the gasket as needed, the gasket can also be provided as a copper gasket with a target thickness of 1.5-2.0 mm in the embodiments of the present application.

[0048] The lower end mounting seat provided in the embodiments of the present application is used to fix the part. Specifically, the upper part of the lower end mounting seat is provided with a plurality of positioning blocks for fixing the part to be tested. The shape and position of the plurality of positioning blocks can be determined according to the shape and position required for fixing the part. The lower end mounting seat can be made in multiple, each of which forms a structure adapted to a type of part at the upper part, and the lower part adopts the same design structure. When in use, the appropriate lower end mounting seat can be selected and connected with the lower end connecting bottom tire.

[0049] In summary, the sealing part compression load deformation curve test device provided in the present application can solve the problem of measuring and analyzing the CLD value of the sealing system of various types of corner window mating surfaces. According to different test purposes and requirements, the upper end test profiling block unit can be simplified to a simple straight line type pressing block, or it can be pressed according to the spatial curved surface of the part. After the part data is locked and the connecting unit is matched, the device is easy to test and has good reproducibility and repeatability.

[0050] The embodiments of the present application can also provide a test method for the sealing part compression load deformation curve test device described above, which comprises:

[0051] connecting the first connecting mounting unit to the lower test platform of the universal tensile testing machine through the first I-shaped connecting block and connecting the second connecting mounting unit to the upper test platform of the universal tensile testing machine through the second I-shaped connecting block;

[0052] mounting the part to be tested on the lower end mounting seat of the first connecting mounting unit;

[0053] adjusting the relative positions of the first I-shaped connecting block and the first T-shaped groove and / or adjusting the relative positions of the second I-shaped connecting block and the second T-shaped groove according to the size of the part to be tested to achieve adjustment in the Y direction in the vehicle body coordinate system;

[0054] determining the target thickness of the gasket according to the type of the test condition, the type of the test condition including the normal standard condition of the connection of the part and the opponent piece and the extreme condition of the connection of the part and the opponent piece;

[0055] after forming gaps between the first I-shaped connecting block and the first mounting groove at both ends of the width direction and respectively arranging the gaskets, starting the universal tensile testing machine to make the pressing block contact the part to be tested, so that the universal tensile testing machine outputs the CLD force value data and the curve as the sealing indicator.

[0056] Further, after forming gaps between the first I-shaped connecting block and the first mounting groove at both ends of the width direction and respectively arranging the gaskets, determining the zero position of the universal tensile testing machine in the Y direction in the vehicle body coordinate system through the intermediate limiting block; testing the force value data and the curve under three conditions of ideal state, underfitting and overfitting according to the different depths of contact of the opponent piece under the change of the hinge and the extreme door closing condition. According to the molding of the sealing side lip of the part to be tested, the molding of the contact surface of the pressing block and the part to be tested is determined.

[0057] Specifically, in the actual application process, the detection work can be completed through the following steps.

[0058] (1) According to the installation form of the existing clamping type corner window part, the part to be tested is installed on the lower end mounting seat unit of the imitation vehicle body sheet metal, and the lower end mounting seat unit is connected to the lower end connecting bottom through one side two-pin quick positioning, and the bottom has a column pin and a chamfered pin, and the upper surface side has a first recess groove which is on the same side as the first avoiding hole, and the lower surface of the lower end connecting bottom is provided with a first T-shaped groove.

[0059] (2) The lower end mounting seat unit is connected to the lower end connecting bottom through one side two-pin quick positioning, and the bottom has a column pin and a chamfered pin, and the upper surface side has a first recess groove which is on the same side as the first avoiding hole, and the lower surface of the lower end connecting bottom is provided with a first T-shaped groove.

[0060] (3) The first I-shaped connecting block is installed into the first T-shaped groove, and the first T-shaped groove is matched well.

[0061] (4) The other end of the I-shaped connecting block is connected with the universal (tension) testing machine, and there are fixed thickness spacers on the two protruding surfaces of the I-shaped connecting block, so that the lower end of the whole tire is kept at an angle on the universal tensile testing machine in the horizontal and left-right directions (X direction - the direction in this method is the vehicle body coordinate system), and at the same time, the two sides can be adjusted to have a fixed offset;

[0062] (5) The upper end is equipped with a pressing block (for precise testing requirements), and according to the complexity of the sealing side lip of the quarter window part, it can also be a simple straight pressing block (for simple modeling and low testing requirements), and the profiling block unit is also equipped with two pin holes to achieve quick positioning, and a screw hole is provided to achieve locking installation, and a second avoiding hole is also provided on one side, which is on the same side as the first avoiding hole;

[0063] (6) The upper end profiling block unit is connected to the upper end connecting tire through a one-side two-pin quick connection and a screw positioning, and the tire has a pin and a chamfered pin on the lower surface, and a second groove is provided on the side, which is on the same side as the second avoiding hole, and a second T-shaped groove is provided on the upper surface of the upper end connecting tire;

[0064] (7) The second I-shaped connecting block is installed on the upper end connecting tire, and is well matched through the T-shaped groove;

[0065] (8) The other end of the second I-shaped connecting block is connected with the universal (tension) testing machine, so that the upper testing part is connected with the universal tensile testing machine as a whole;

[0066] (9) There is a middle limiting block with a fixed height square column between the upper and lower tires, and the outer contour is consistent with the width of the first and second grooves, so that it can be well matched (adjusting the parallelism and position consistency of the upper and lower testing platforms in the Z direction), and at the same time, its height (according to the theoretical setting of the quarter window part wrapping and the opposite hand tool in the vehicle body modeling) can find the initial position (0 point) of the universal tensile testing machine at the initial stage of measurement, and play the role of Y direction relative to 0 point;

[0067] (10) After the universal tensile testing machine is returned to 0 in Y direction, the upper end profiling unit (simple / complex) is pressed against the actual lip of the lower end part, and the CLD force value data and curve of the part injection lip as a sealing indicator are tested.

[0068] The upper and lower tire fixtures are provided with grooves for limiting; and a T-shaped groove is connected, which can easily adjust the position (Y direction) of parts of different sizes after being installed on the mounting seat unit, preventing the parts from being too close to the body of the tensile testing machine, causing measurement failure or distorted measurement data;

[0069] After the bottom tire and the I-shaped connecting block are connected at the lower end, the lower two sides of the I-shaped connecting block are provided with copper gaskets of a fixed size (1.5-2.0 mm), and when the positions of the two side gaskets are adjusted (the gaskets are distributed on both sides; the gaskets are distributed on one side), the sealing CLD value changes of the parts under normal standard conditions and the parts and the counterpart under extreme conditions can be simulated respectively (the extreme pulling deformation of the vehicle door at the vehicle door connecting hinge causes the position change of the lip of the quarter window part and the counterpart on the vehicle door).

[0070] By replacing the modeling size of the upper end pressing block test part and the fixed connection form of the lower end mounting seat part, all such quarter window parts can be applied, and if the product types are few, the upper end profiling pressing block can be integrated with the upper end connecting bottom tire.

[0071] By the middle limiting block, the test machine 0 position can be quickly centered and found, and the CLD values under three conditions of ideal state, underfitting, and overfitting (relative to 0 position in the pressing direction Y, micro-gap and interference fit position Y direction ±0.5, Z direction avoiding the equipment body, and upper and lower relative position 0) can be tested according to the changes of the hinge and the different depths of the counterpart under the extreme door closing condition.

[0072] The two side gaskets are made of copper material, and there is no gap and frame amount when the installation is complete, which ensures the accuracy of the size and guarantees the repeatability and reproducibility of the test.

[0073] The method provided by the application is described and verified in detail below by taking the shift of the hinge position as an example.

[0074] As shown in Figure 3 , when the hinge position changes and shifts (here, X direction ±1.7 is taken as a reference), the theoretical position and the two extreme conditions of Y direction pressing under this condition (Y direction ±0.5 is taken as a reference) are tested respectively; here, the directions are all in the automobile coordinate system.

[0075] The profiling pressing block can be used to measure a single value (see the value in the upper right corner of the figure), or a simplified fixed length straight part can be used to test the force value according to the industry habit (see the value in the lower left corner of the figure).

[0076] As shown in Figure 4 , the test conditions can also simulate the case under long-term use in harsh working conditions (after increasing the variable 6MM on the basis of the Y direction 0 position under the previous condition, the force value changes caused by different X direction deviations are tested).

[0077] It is to be noted that, as used in this specification and the appended claims, the singular forms "a," "an" and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a combination of two or more components, and the term "an element" can include comparable reference to a plurality of elements. Also, as used in this specification and the appended claims, the term "or" as used in the context of "A / B" or "A / B / C" means any of the possibilities; for example, the term "or" means "any of A, B, or C; or any of A, B, or C." Further, the term "comprising" as used in this specification and the appended claims, is inclusive or open and does not exclude additional, non-relevant elements or limit it to the specific elements

[0078] The preferred embodiments of the present application have been described above with the intent to enable those skilled in the art to make and use it. Various modifications to these embodiments will occur to those skilled in the art and are intended to be encompassed by the description. Therefore, it is to be understood that within the scope of the appended claims, the application can be practiced otherwise than as specifically described. For that reason, the above description is intended for illustration only and not for limitation.

Claims

1. A test method using a test device for compressive load deformation curve of sealed parts, characterized in that, The sealing component compression load deformation curve testing device includes: The first connecting and mounting unit includes a lower connecting base and a lower mounting seat, wherein the lower connecting base is connected to the lower mounting seat; the lower connecting base is provided with a first T-shaped groove extending axially along its length; and a first I-shaped connecting block is provided in the first T-groove. The second connecting and mounting unit includes an upper connecting base and a pressure block; the upper connecting base is connected to the pressure block; the upper connecting base is provided with a second T-shaped groove extending axially along its length; a second I-shaped connecting block is provided in the second T-groove; The first I-shaped connecting block is used to connect with the first mounting slot of the universal tensile testing machine. A gap is formed between both ends of the first I-shaped connecting block in the width direction and the first mounting slot. The gap is used to set a shim with a target thickness. The second I-shaped connecting block is used to connect with the second mounting slot of the universal tensile testing machine. The space between the lower mounting base and the pressure block is used to accommodate the part to be tested. The testing method includes: The first connecting and mounting unit is connected to the lower test platform of the universal tensile testing machine via the first I-beam connecting block, and the second connecting and mounting unit is connected to the upper test platform of the universal tensile testing machine via the second I-beam connecting block. The part to be tested is installed onto the lower mounting base of the first connecting mounting unit; Adjust the relative position of the first I-shaped connecting block and the first T-slot and / or adjust the relative position of the second I-shaped connecting block and the second T-slot according to the size of the part to be tested, so as to achieve adjustment in the Y direction in the vehicle body coordinate system; The target thickness of the gasket is determined according to the type of test condition, which includes the normal standard condition of the connection between the part and the counterpart and the extreme condition of the connection between the part and the counterpart. The door and corner window sealing parts are matched in the set position. The normal standard condition is simulated by adjusting the thickness of the gasket so that the center line of the lower mounting seat and the center line of the pressure block coincide in the Y direction of the vehicle coordinate system. The extreme condition is simulated by adjusting the thickness of the gasket so that the center line of the lower mounting seat and the center line of the pressure block are misaligned in the Y direction of the vehicle coordinate system. After the gaskets are respectively placed between the first I-shaped connecting block and the first mounting groove at both ends in the width direction, the universal tensile testing machine is started to make the pressure block contact the part to be tested, so that the universal tensile testing machine outputs CLD force value data and curves as a sealing index.

2. The test method according to claim 1, characterized in that, After the gaskets are respectively placed between the first I-shaped connecting block and the first mounting groove at both ends of the width direction, the zero position of the universal tensile testing machine in the Y direction of the vehicle body coordinate system is determined by the intermediate limiting block; the force value data and curves under the ideal state, underfitting, and overfitting conditions are tested according to the changes in the hinge and the different contact depths of the hand parts under extreme door closing conditions.

3. The test method according to claim 1, characterized in that, The shape of the contact surface of the pressure block with the part under test is determined based on the shape of the sealing lip of the part under test.

4. The test method according to claim 1, characterized in that, The lower end connecting base and the lower end mounting base are located on the same side and are respectively provided with a first groove and a first clearance hole; the upper end connecting base and the pressure block are located on the same side and are respectively provided with a second groove and a second clearance hole. An intermediate limiting block with a target fixed height is provided between the first groove and the second groove. The target height is determined based on the theoretical gauge between the corner window part edge and the hand part in the vehicle body styling. The outer contour of the intermediate limiting block is adapted to the inner contour of the first groove and the second groove.

5. The test method according to claim 1, characterized in that, The contact surface between the pressure block and the part to be tested forms a contoured surface that matches the shape of the part when it is assembled on the vehicle.

6. The test method according to claim 1, characterized in that, The lower end connecting base and the lower end mounting base are connected by a two-pin method.

7. The test method according to claim 1, characterized in that, The upper end connecting base and the pressure block are connected by screws using a two-pin method.

8. The test method according to claim 1, characterized in that, The gasket is a copper gasket, and the target thickness is 1.5-2.0 mm.

9. The test method according to claim 8, characterized in that, The upper part of the lower mounting base is provided with several positioning blocks for fixing the part to be tested.

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