Multifunctional sealing strip abrasion resistance test device

Abstract

The utility model discloses a multifunctional sealing strip wear resistance test device, which comprises a test machine body, a fixed bottom plate and a plurality of test tools, the fixed bottom plate is arranged in the test machine body in a reciprocating sliding manner, and the plurality of test tools are arranged between the fixed bottom plate and the test machine body at intervals and are used for wear resistance test of a plurality of sealing strips; the testing tool comprises a profiling fixing block, a supporting rod, a load piece, a grinding head, a lock catch fixing assembly and a grinding head fixing assembly, the profiling fixing block is arranged on a fixing bottom plate and used for fixing a testing sample piece and simulating the real vehicle installation condition, and a base plate is arranged between the profiling fixing block and the fixing bottom plate; the supporting rod is fixed to the testing machine body through a lock catch fixing assembly and located on the side, away from the fixing bottom plate, of the profiling fixing block, the supporting rod is provided with at least one load part for providing loads, and the end, facing the profiling fixing block, of the supporting rod is connected with a grinding head through a grinding head fixing assembly. According to the utility model, the guaranteed load and the guaranteed deformation of the sealing strip can be measured at the same time so as to improve the wear resistance detection efficiency of the sealing strip.

Description

Technical Field

[0001] This utility model relates to a multifunctional sealing strip wear resistance testing device, belonging to the technical field of testing equipment. Background Technology

[0002] Automotive sealing strips are one of the important components of automobiles, mainly used on door panels and frames, side windows, front and rear windshields, engine hoods, and trunk lids, serving functions such as waterproofing, dustproofing, sound insulation, heat insulation, shock absorption, and decoration. Rubber hinges for installing luggage compartment doors in passenger vehicles can also be manufactured.

[0003] As a key component of automobiles, the wear resistance of sealing strips directly affects the vehicle's sealing performance, safety, and service life. Therefore, sealing strips need to undergo wear resistance testing before being put into use to evaluate their wear resistance performance during long-term use, ensuring that they can maintain a stable sealing effect and a long service life in actual use.

[0004] Currently, abrasion resistance testing of many rubber products requires simulating actual vehicle installation conditions. However, conventional abrasion resistance testing can only confirm one variable value, guaranteeing either load or deformation. This undoubtedly leads to a reduction in the testing efficiency of sealing strips. Therefore, there is an urgent need in this field for a multifunctional testing device that can simultaneously measure the guarantee load and guarantee deformation of sealing strips, thereby improving the testing efficiency of sealing strips. Utility Model Content

[0005] The technical problem this invention aims to solve is that most existing sealing strip abrasion resistance testing equipment can only perform tests on one type of variable value, and cannot simultaneously perform tests on multiple variable values, which seriously affects testing efficiency.

[0006] To address the aforementioned technical problems, this utility model provides a multifunctional sealing strip abrasion resistance testing device, which can simultaneously measure the guaranteed load and guaranteed deformation of the sealing strip to improve the efficiency of sealing strip abrasion resistance testing.

[0007] To achieve the above-mentioned technical objectives and effects, this application provides the following technical solution:

[0008] A multifunctional sealing strip wear resistance testing device includes a testing body, a fixed base plate, and testing fixtures. The fixed base plate is driven to reciprocate and slide within the testing body by a driving device. Multiple testing fixtures are provided and spaced apart between the fixed base plate and the testing body for wear resistance testing of multiple sealing strips.

[0009] The test fixture includes a contouring fixing block, a support rod, a load-bearing component, a grinding head, a locking fixing assembly, and a grinding head fixing assembly. The contouring fixing block is detachably mounted on a fixed base plate to simulate the installation of a real vehicle while fixing the test sample. A pad is detachably mounted between the contouring fixing block and the fixed base plate. The support rod is fixed to the test body via the locking fixing assembly and is located on the side of the contouring fixing block away from the fixed base plate. At least one load-bearing component is detachably mounted on the support rod to provide the load required for the test. The end of the support rod facing the contouring fixing block is connected to and fixed to the grinding head via the grinding head fixing assembly so that the test sample is rubbed by the grinding head.

[0010] Preferably, the locking and fixing assembly includes a positioning block and a locking element. The testing machine body is provided with a fixing rod perpendicular to the moving direction of the fixed base plate. The positioning block is engaged on the side of the fixing rod away from the fixed base plate. The grinding head fixing assembly is disposed on the side of the fixing rod away from the positioning block. The locking element is mounted on the positioning block and can fasten the grinding head fixing assembly onto the fixing rod, thereby fixing the positioning block and the grinding head fixing assembly on the fixing rod. One end of the support rod passes through the positioning block and extends into the grinding head fixing assembly to connect with the grinding head.

[0011] Furthermore, the grinding head fixing assembly includes a mounting block and a locking screw. The mounting block is a rectangular block and is fitted to the fixing rod. One end of the support rod passes through the mounting block. The grinding head passes through the mounting block from the side of the mounting block away from the fixing rod and connects with the support rod. The locking screw is threaded to the side wall of the mounting block and its end can be screwed to abut against the side wall of the grinding head.

[0012] Furthermore, the locking element is a loop fastener.

[0013] Preferably, the end of the support rod away from the contour fixing block is provided with a threaded part, and the middle part of the load member is provided with a threaded hole that is threadedly engaged with the threaded part.

[0014] Preferably, the grinding head is a glass friction element, and the friction head of the grinding head is rounded.

[0015] Preferably, the fixed base plate has multiple threaded mounting holes, and the pad and the contour fixing block both have screw holes that are compatible with the threaded mounting holes. The fixed base plate is connected to the pad and the contour fixing block by bolts.

[0016] The multifunctional sealing strip abrasion resistance testing device provided by this utility model has the following advantages:

[0017] 1. The multifunctional sealing strip wear resistance testing device of this utility model can meet the test load requirements for sealing strip wear testing by increasing or decreasing the number of load components screwed on the support rod, and can adjust the contact height between the grinding head and the sealing strip by increasing or decreasing the number of pads, thereby simultaneously meeting the sealing strip test compression height requirements and improving testing efficiency.

[0018] 2. The multifunctional sealing strip wear resistance testing device of this utility model can simulate the actual vehicle installation situation to a certain extent by means of a detachable conformal fixing block set on the fixed base plate, thereby making the wear test more substantial and the test data more representative. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a multifunctional sealing strip wear resistance testing device provided in Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the grinding head fixing assembly provided in Embodiment 2 of this utility model;

[0021] In the picture:

[0022] 1-Test body; 2-Fixed base plate; 3-Following fixing block; 4-Support rod; 41-Threaded part; 5-Loading part; 51-Threaded hole; 6-Grinding head; 7-Locking fixing assembly; 71-Positioning block; 72-Locking part; 8-Grinding head fixing assembly; 81-Mounting block; 811-Fixed part; 812-Moving part; 82-Locking screw; 9-Plate; 10-Fixed rod; 11-Test sample. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example 1:

[0025] Reference Figure 1 and Figure 2A multifunctional sealing strip wear resistance testing device includes a testing body 1, a fixed base plate 2, and testing fixtures. The fixed base plate 2 is driven by a driving device to reciprocate and slide within the testing body 1. In feasible embodiments, the driving device can be a linear motor module or a rodless cylinder, as long as it can realize the reciprocating sliding of the fixed base plate 2. This is existing technology and will not be described in detail. Multiple testing fixtures are installed and spaced between the fixed base plate 2 and the testing body 1 for simultaneous wear resistance testing of multiple sealing strips, thereby improving testing efficiency.

[0026] Reference Figure 1 The test fixture includes a contoured fixing block 3, a support rod 4, a load-bearing component 5, a grinding head 6, a locking and fixing assembly 7, and a grinding head 6 fixing assembly. The contoured fixing block 3 is detachably mounted on the fixed base plate 2 by bolts. The contoured fixing block 3 is designed and manufactured according to the actual installation position of the sealing strip, and only requires injection molding, which is existing technology and will not be described in detail. The contoured fixing block 3 can simulate the actual vehicle installation situation and fix the test sample 11. The support rod 4 is fixed to the test body 1 by the locking and fixing assembly 7 and is located on the side of the contoured fixing block 3 away from the fixed base plate 2. At least one load-bearing component 5 is detachably mounted on the support rod 4 to provide the load of the weight required for the test. The end of the support rod 4 facing the contoured fixing block 3 is fixed by the grinding head 6 fixing assembly. A grinding head 6 is fixedly installed. During testing, the grinding head 6 rests against the test sample 11. The test sample 11 is driven to reciprocate by the fixed base plate 2, and the grinding head 6 can then perform a friction test on the test sample 11. A pad 9 is detachably installed between the contour fixing block 3 and the fixed base plate 2 by bolts. Multiple pads 9 can be stacked to adjust the distance between the contour fixing block 3 and the grinding head 6. This allows for adjustment of the compression amount while meeting the compression amount required for the wear test of the sealing strip. The load component 5, which is detachably installed on the support rod 4, can adjust the load required for the sealing strip test by increasing or decreasing the number of load components 5. This allows for simultaneous measurement of the guaranteed load and guaranteed deformation of the sealing strip, thereby improving the efficiency of the wear resistance test of the sealing strip.

[0027] The fixed base plate 2 has multiple threaded mounting holes, and the pad 9 and the contoured fixing block 3 are all provided with screw holes that match the threaded mounting holes. The fixed base plate 2, the pad 9, and the contoured fixing block 3 are connected by the same bolt, making disassembly and assembly convenient and quick.

[0028] The locking and fixing assembly 7 includes a positioning block 71 and a locking element 72. A fixing rod 10 perpendicular to the moving direction of the fixed base plate 2 is fixedly installed on the test body 1. The positioning block 71 is engaged on the side of the fixing rod 10 away from the fixed base plate 2. The grinding head 6 fixing assembly is installed on the side of the fixing rod 10 away from the positioning block 71. The locking element 72 is rotated on the positioning block 71 and can fasten the grinding head 6 fixing assembly on the fixing rod 10, thereby fixing the positioning block 71 and the grinding head 6 fixing assembly on the fixing rod 10. One end of the support rod 4 passes through the positioning block 71 and extends into the grinding head 6 fixing assembly to connect with the grinding head 6. In this embodiment, the locking element 72 is preferably a U-shaped buckle, which can fasten the grinding head 6 fixing assembly between the inner wall of the locking element 72 and the outer wall of the fixing rod 10.

[0029] The grinding head 6 fixing assembly includes a mounting block 81 and a locking screw 82. The mounting block 81 is a rectangular block and is placed against the fixing rod 10. One end of the support rod 4 passes through the mounting block 81. The grinding head 6 passes through the mounting block 81 from the side away from the fixing rod 10 and connects with the support rod 4. The locking screw 82 is threaded to the side wall of the mounting block 81 and its end can be screwed to abut against the side wall of the grinding head 6 to fix the grinding head 6. At the same time, a screw for locking the support rod 4 can also be screwed to the side wall of the mounting block 81 to further ensure the stability of the friction of the grinding head 6.

[0030] Reference Figure 1 The support rod 4 has a threaded part 41 integrally formed at one end away from the contour fixing block 3. The load component 5 has a threaded hole 51 through the middle that is threaded to engage with the threaded part 41, thereby ensuring the ease of disassembly and assembly of the load component 5 while ensuring the stability of the load after installation.

[0031] Reference Figure 1 Grinding head 6 is a glass friction element. The friction head of grinding head 6 is rounded. Specifically, the end face of the friction part of the glass friction element is ground and rounded with a 150# grinding wheel. It needs to be replaced or re-grinded after every 10,000 wear cycles. The glass quality should meet the specified requirements.

[0032] The working principle of this multifunctional sealing strip wear resistance testing device is as follows:

[0033] Before testing, test samples 11 should be cut from the finished product, with a length of 100mm±2mm and a quantity of no less than 3 pieces. The time interval between the finished product and vulcanization before sampling should be greater than 16 hours. Before testing, the test samples 11 after sampling should be conditioned in an environment with a temperature of 23±2℃ and a humidity of 50±5% for more than 3 hours. The samples should not be subjected to stress during the storage period.

[0034] The test is conducted through the following steps:

[0035] Step 1: Take a sample of the finished product and install and fix the sample on the contour fixing block 3;

[0036] Step 2: Set the parameters before testing. Set the test speed to 60-66 mm / min, wear stroke to 70 mm, wear cycle to 1 kg, constant load to 1 kg, and select a suitable glass grinding head 6.

[0037] Step 3: The grinding head 6 is fixed by the locking and fixing assembly 7 and the grinding head 6 fixing assembly, and sufficient load components 5 are installed on the support rod 4 according to the test load requirements;

[0038] Step 4: The contouring fixing block 3 is installed and fixed on the fixed base plate 2. The position of the contouring fixing block 3 is adjusted by the wear stroke. At the same time, a pad 9 is added to the fixed base to adjust the compression between the grinding head 6 and the sample.

[0039] Step 5: Equipment operation and testing in progress. For dry grinding, follow steps one to four above until the wear cycle ends; for wet grinding, follow steps one to four above, and add cleaning water as required during the test.

[0040] Step Six: Evaluation. When evaluating coating wear, the travel within 5mm at both ends of the friction area is not considered, and the test result should be the lowest grade of the three samples.

[0041] Example 2:

[0042] The difference between this embodiment and Embodiment 1 is that:

[0043] The mounting block 81 includes a fixed part 811 and a movable part 812. The fixed part 811 is L-shaped and its opening is located on the side away from the fixed rod 10. The fixed part 811 is fastened to the fixed rod 10 by a locking fastener 72. The movable part 812 can be assembled with the fixed part 811 to form a complete rectangular block and is fixed by bolts. A mounting groove for mounting the grinding head 6 is provided between the movable part 812 and the fixed part 811, which can accommodate various types of grinding heads 6, thereby further improving the practicality of the test device.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the protection scope of this utility model. Any modifications, alterations, and equivalent changes made by those skilled in the art without departing from the spirit and scope of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this utility model are still within the scope of the technical solution of this utility model.

Claims

1. A multi-functional seal strip abrasion tester device comprising a testing machine body (1), characterized in that, Also include a fixed base plate (2) and test tool, the fixed base plate (2) is driven reciprocatingly arranged in the test body (1) by driving device, the test tool is provided with a plurality of and interval arrangement between fixed base plate (2) and test body (1) for a plurality of wear-resistant test of sealing strip; The test tool includes a profiling fixture (3), a support rod (4), a load (5), a grinding head (6), a lock buckle fixing assembly (7) and a grinding head (6) fixing assembly. The profiling fixture (3) is detachably arranged on the fixed base plate (2) to simulate the installation condition of the actual vehicle and fix the test sample (11). A spacer plate (9) is detachably arranged between the profiling fixture (3) and the fixed base plate (2). The support rod (4) is fixed on the test body (1) through the lock buckle fixing assembly (7) and located on the side of the profiling fixture (3) away from the fixed base plate (2). At least one load (5) is detachably arranged on the support rod (4) to provide the required weight load for the test. The end of the support rod (4) towards the profiling fixture (3) is connected to the grinding head (6) through the grinding head (6) fixing assembly to rub the test sample (11) through the grinding head (6).

2. A multi-functional weather-stripping abrasion tester as defined in claim 1, wherein The lock buckle fixing assembly (7) includes a positioning block (71) and a lock buckle (72). The test body (1) is provided with a fixed rod (10) perpendicular to the moving direction of the fixed base plate (2). The positioning block (71) is clamped on the side of the fixed rod (10) away from the fixed base plate (2). The grinding head (6) fixing assembly is arranged on the side of the fixed rod (10) away from the positioning block (71). The lock buckle (72) is arranged on the positioning block (71) and can buckle the grinding head (6) fixing assembly on the fixed rod (10) to fix the positioning block (71) and the grinding head (6) fixing assembly on the fixed rod (10). The end of the support rod (4) penetrates the positioning block (71) and extends into the grinding head (6) fixing assembly to connect with the grinding head (6).

3. A multi-functional weather-stripping abrasion tester as defined in claim 2 wherein, The grinding head (6) fixing assembly includes a mounting block (81) and a locking screw (82). The mounting block (81) is a rectangular block and is arranged on the fixed rod (10). The end of the support rod (4) penetrates into the mounting block (81). The grinding head (6) penetrates into the mounting block (81) from the side of the mounting block (81) away from the fixed rod (10) and connects with the support rod (4). The locking screw (82) is threadedly connected on the side wall of the mounting block (81) and the end can be screwed to abut with the side wall of the grinding head (6).

4. A multi-functional weather-stripping abrasion tester as defined in claim 3 wherein, The lock buckle (72) is a back type buckle.

5. A multi-functional seal strip abrasion tester as claimed in claim 1, wherein, The end of the support rod (4) away from the profiling fixture (3) is provided with a threaded portion (41). The middle of the load (5) is provided with a threaded hole (51) threadedly matched with the threaded portion (41).

6. A multi-functional seal strip abrasion tester as claimed in claim 1, wherein, The grinding head (6) is a glass rubbing sub. The rubbing head of the grinding head (6) is rounded.

7. A multi-functional weather-stripping abrasion tester as defined in claim 1 wherein, A plurality of threaded mounting holes are formed in the fixed base plate (2), and the spacer plate (9) and the profiling fixed block (3) are both provided with screw holes matched with the threaded mounting holes, and the fixed base plate (2), the spacer plate (9) and the profiling fixed block (3) are connected through bolts.

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