Automobile coating wear resistance tester and test method

Abstract

The invention relates to the technical field of automobile coating testing, in particular to an automobile coating wear resistance tester and a testing method, and the automobile coating wear resistance tester comprises a testing platform, a testing mechanism and a locking unit. According to the invention, a plurality of different comparison groups are arranged by adding the test stations, and different grinding head materials and different acting forces applied by the grinding heads are taken as references, so that the wear condition of the automobile coating under the real condition is simulated, the authenticity of the test result is improved, and the test efficiency is improved by simultaneously testing and comparing the plurality of stations; according to the technical scheme, the complex processes of repeatedly replacing the grinding head for multiple times, applying different downward pressure and repeatedly testing for multiple times are omitted, then, multiple stations can be arranged for simultaneous testing according to testing requirements, simultaneous locking of all the stations is completed through the locking unit, and the testing efficiency and the convenience of the testing process are improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile coating testing, in particular to an automobile coating wear resistance tester and a testing method. Background Art

[0002] The wear resistance of automotive coatings is one of the important indicators for evaluating their quality and durability. Cars are exposed to various frictions in daily use, such as wind and sand, stone impact, car wash brushes, etc., which will cause wear on the surface of the car body. Therefore, ensuring that the automotive coatings have good wear resistance is crucial to protecting the car body from damage and maintaining the beauty of the vehicle. Therefore, it is necessary to test the wear resistance of automotive coatings to ensure that the wear resistance of the automotive coatings meets the use requirements.

[0003] At present, when the wear resistance of automobile paint is tested, the automobile paint is first applied to a sample, and the sample is fixed to a test bench. Then, the grinding head in the wear tester is moved back and forth on the upper surface of the sample to test the wear resistance of the sample. The current wear resistance test process has the following problems: when the wear resistance test is performed, the wear resistance test is mainly performed using a grinding head of a single material. In actual situations, the automobile paint may be subjected to friction with a variety of different materials. Therefore, the grinding head and the sample need to be replaced many times during the test, and the test process needs to be repeated many times using grinding heads of different materials. The test process is cumbersome. Secondly, the current test process is mainly performed at a single station, and the test efficiency is poor. Summary of the invention

[0004] Based on this, it is necessary to provide an automobile coating wear resistance tester and a test method, aiming to solve the above-mentioned problems of the prior art.

[0005] The present application provides an automobile paint wear resistance tester, comprising: a test platform, wherein two mounting plates are fixedly arranged on the upper end surface of the test platform, the two mounting plates are opposite to each other, a horizontal plate 1 is arranged on the left mounting plate for sliding left and right via a connecting shaft, and a horizontal plate 2 is arranged on the right mounting plate for sliding left and right via a horizontal rod.

[0006] A testing mechanism is commonly provided between the horizontal plate one and the horizontal plate two, and the testing mechanism comprises a sliding plate, a plurality of sliding plates arranged from front to back are slidably installed on the right end surface of the horizontal plate one, a plurality of card slots equidistantly arranged from front to back are provided on the upper end surface of the horizontal plate two, a rectangular plate is commonly provided between the card slots and the sliding plate, a rectangular block is provided on the rectangular plate for sliding up and down through a mounting rod with a vertical axis, a grinding head is provided on the rectangular block below, the sliding plate and the rectangular plate both slide up and down and are penetrated by a connecting rod with a vertical axis, a lower pressure plate is provided on the connecting rod, the lower pressure plate is L-shaped, and the two lower pressure plates opposite to each other on the left and right are symmetrical on the left and right.

[0007] A locking unit is provided between the horizontal plate 1 and the horizontal plate 2.

[0008] According to a favorable embodiment, the testing mechanism also includes a docking column, a docking column with an axis extending from left to right is fixedly provided on the right end face of the sliding plate, a docking groove corresponding to the docking column is opened on the left end face of the rectangular plate, the right end of the docking column is chamfered, and a spring 1 mounted on the connecting shaft is fixedly provided between the horizontal plate 1 and the left mounting plate.

[0009] According to a favorable embodiment, the testing mechanism also includes a connecting bar, the lower end surface of the connecting rod is fixedly provided with the connecting bar, the lower end surface of the connecting bar is slidably provided with a moving block, the lower end surface of the moving block is fixedly connected to the lower pressure plate through a spring telescopic rod with a vertical axis, the opposite back surfaces of the two left and right opposite moving blocks are fixedly provided with guide rods with vertical axes through a transverse frame, and the upper end surface of the test platform is provided with guide grooves corresponding to the guide rods one by one.

[0010] According to an advantageous embodiment, the test platform is provided with a plurality of rectangular placement slots which are arranged equidistantly from front to back.

[0011] According to an advantageous embodiment, a U-shaped frame located above the connecting strip is rotatably provided on the right connecting rod, and a groove cooperating with the left connecting rod and the connecting strip is provided on the rear end surface of the left vertical section of the U-shaped frame.

[0012] According to a favorable embodiment, the locking unit also includes a mounting bolt, a mounting bolt with a vertical axis is fixedly provided on the inner wall of the slot, a mounting hole is opened on the rectangular plate, and except for the rearmost connecting rod on the right side, the remaining connecting rods on the right side are fixedly sleeved with an L-shaped frame, and an L-shaped pad is fixedly provided on the lower end surface of the vertical section of the L-shaped frame, and a through hole is opened on the horizontal section of the pad, and the horizontal section of the pad is located between the second horizontal plate and the adjacent rear rectangular plate, and the rearmost connecting rod on the right side and the adjacent mounting bolt are jointly sleeved with a locking plate, and a nut is threadedly installed on the mounting bolt.

[0013] According to an advantageous embodiment, cushion blocks are fixedly provided at both ends of the lower end surface of the locking plate.

[0014] According to an advantageous embodiment, the upper fixing sleeve of the right connecting rod is provided with a lower pressure ring located above the rectangular plate.

[0015] According to a favorable embodiment, a T-shaped groove is provided on the front end face of the rectangular block, a T-shaped block is installed in the T-shaped groove, the grinding head is fixedly arranged on the lower end face of the T-shaped block, an adjustment group is provided on the rectangular block, and the adjustment group includes a side plate, a side plate is fixedly provided on the left connecting strip, a plurality of locking holes 1 are provided on the side plate and are equidistantly arranged from top to bottom, an adjustment block is slidably sleeved up and down on the mounting rod, a spring 2 sleeved on the mounting rod is fixedly provided between the adjustment block and the rectangular block, a tightening sleeve sleeved on the mounting rod is fixedly provided on the lower end face of the rectangular block, a locking hole 2 is provided on the left end face of the adjustment block, and a locking rod is inserted and installed between the locking hole 2 and the corresponding locking hole 1.

[0016] In summary, the present invention includes at least one of the following beneficial effects: First, in the present invention, by adding test stations to set up multiple groups of different comparison groups, the wear conditions of automobile coatings under real conditions are simulated with reference to different grinding head materials and different forces applied by the grinding heads, thereby improving the authenticity of the test results, and simultaneously testing and comparing at multiple stations to improve the test efficiency, thereby eliminating the tedious process of repeatedly replacing grinding heads, applying different downforces, and repeating tests. Secondly, according to the test requirements, multiple stations can be set up for simultaneous testing, and the simultaneous locking of all stations can be completed through the locking unit, thereby improving the test efficiency and the convenience of the test process.

[0017] 2. In the present invention, the docking column on the sliding plate is inserted into the docking groove on the corresponding rectangular plate on the right side, so the two mounting plates, horizontal plate 1, all sliding blocks, all rectangular plates and horizontal plate 2 together form a plurality of rectangular frames, avoiding the problem of cantilever formation of horizontal plate 2 during the wear resistance test. Secondly, the groove on the U-shaped frame is inserted into the adjacent connecting rod on the left side, so that the left and right connecting rods, the sliding plate and the rectangular plate are an integrated structure, which improves the stability during subsequent testing.

[0018] 3. In the locking unit of the present invention, all rectangular plates can be locked only by a single nut on the rearmost locking plate, which is convenient for installing and disassembling the test station, and makes all the grinding heads receive the reaction force during the left and right reciprocating movement test by all the rectangular plates, thereby improving the stability during the test. Secondly, it is convenient to install different numbers of rectangular plates to form the required number of test stations, and can simultaneously test the wear resistance of the same coating sample through grinding heads of different materials, thus avoiding repeated testing by replacing the grinding heads, thereby improving the test efficiency and the applicability of the tester. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of an automobile coating wear resistance tester provided according to an embodiment of the present invention is shown.

[0021] Figure 2 A schematic diagram of the three-dimensional structure between a test platform, a mounting plate and a second horizontal plate provided according to an embodiment of the present invention is shown.

[0022] Figure 3 A partial cross-sectional front view of a sliding plate, a rectangular plate and a template provided according to an embodiment of the present invention is shown.

[0023] Figure 4 A schematic diagram of a partial cross-sectional three-dimensional structure between a sliding plate, a rectangular plate and a U-shaped frame provided according to an embodiment of the present invention is shown.

[0024] Figure 5 A schematic diagram of the three-dimensional structure among the adjustment block, the tightening strip and the grinding head provided according to an embodiment of the present invention is shown.

[0025] Figure 6 A schematic diagram of the three-dimensional structure among the horizontal plate 2, the locking plate and the cushion block provided according to an embodiment of the present invention is shown.

[0026] The above drawings include the following reference numerals: 1, test platform; 2, mounting plate; 3, horizontal plate 1; 4, horizontal plate 2; 5, test mechanism; 50, sliding plate; 500, slot; 501, rectangular plate; 502, rectangular block; 503, grinding head; 504, lower pressure plate; 51, docking column; 510, docking groove; 511, spring 1; 52, connecting strip; 520, moving block; 521, spring telescopic rod 1; 522, guide rod; 523, guide slot; 53, placement slot; 54, U-shaped frame; 540, groove; 55, locking unit; 550, mounting bolt; 551, mounting hole; 552, L-shaped frame; 553, pad; 554, locking plate; 555, nut; 56, pad; 57, lower pressure ring; 58, T-shaped block; 59, adjustment group; 590, side plate; 591, locking hole one; 592, adjustment block; 593, spring two; 594, tight sleeve; 596, locking rod; 6, template. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0028] like Figure 1 As shown, an automobile paint wear resistance tester comprises: a test platform 1, two mounting plates 2 are fixedly arranged on the upper end surface of the test platform 1, the two mounting plates 2 are opposite to each other, a horizontal plate 1 3 is arranged on the left mounting plate 2 for sliding left and right through a connecting shaft, and a horizontal plate 2 4 is arranged on the right mounting plate 2 for sliding left and right through a horizontal rod, and the horizontal rod is connected to an external electric reciprocating push rod.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, a testing mechanism 5 is commonly provided between the horizontal plate 1 3 and the horizontal plate 2 4, and the testing mechanism 5 includes a sliding plate 50, and a plurality of sliding plates 50 arranged from front to back are slidably installed on the right end surface of the horizontal plate 1 3, and a plurality of card slots 500 equidistantly arranged from front to back are provided on the upper end surface of the horizontal plate 2 4, and a rectangular plate 501 is commonly provided between the card slot 500 and the sliding plate 50, and a rectangular block 502 is provided on the rectangular plate 501 for sliding up and down through a mounting rod with a vertical axis, and a grinding head 503 is provided on the rectangular block 502 and is located below the rectangular block 502, and both the sliding plate 50 and the rectangular plate 501 slide up and down and are penetrated by a connecting rod with a vertical axis, and a lower pressure plate 504 is provided on the connecting rod, and the lower pressure plate 504 is L-shaped, and the two lower pressure plates 504 opposite to each other on the left and right are symmetrical on the left and right.

[0030] like Figure 1 As shown, a locking unit 55 is provided between the horizontal plate 1 3 and the horizontal plate 2 4 .

[0031] During operation, firstly, a plurality of samples 6 to be tested are manually placed on the test platform 1, and a corresponding number of sliding plates 50 and rectangular plates 501 are selected according to the number of required test samples 6, and the sliding plate 50 is slidably installed on the horizontal plate 1 3, and the rectangular plate 501 is installed on the horizontal plate 2 4, and the locking unit 55 is used to complete the locking of the sliding plate 50 and the rectangular plate 501. At this time, the rectangular block 502 is located above the corresponding sample 6, and the grinding head 503 of different materials is selected according to the needs and installed on the rectangular block 502. Then, the external electric reciprocating push rod drives the horizontal plate 2 4, the rectangular plate 501 and all the grinding heads 503 to move back and forth left and right to test the wear resistance of the sample 6. After the test is completed, the sample 6 is taken out, the wear condition of the sample 6 is observed, and its wear resistance is evaluated. Secondly, through the reciprocating movement test of the grinding head 503 of different materials, the wear resistance performance results of the sample 6 when subjected to external wear of different materials are compared.

[0032] like Figure 1 , Figure 3 and Figure 4 As shown, the testing mechanism 5 also includes a docking column 51, the right end face of the sliding plate 50 is fixedly provided with a docking column 51 with an axis extending from left to right, the left end face of the rectangular plate 501 is provided with a docking groove 510 corresponding to the docking column 51, the right end of the docking column 51 is chamfered, and a spring 511 sleeved on the connecting shaft is fixedly provided between the horizontal plate 3 and the left mounting plate 2.

[0033] like Figure 1 , Figure 2 and Figure 4 As shown, the test mechanism 5 also includes a connecting bar 52, the lower end surface of the connecting rod is fixedly provided with the connecting bar 52, the lower end surface of the connecting bar 52 is slidably provided with a moving block 520, the lower end surface of the moving block 520 is fixedly connected to the lower pressure plate 504 through a spring telescopic rod 521 with a vertical axis, and the opposite back surfaces of the two left and right opposite moving blocks 520 are fixedly provided with a guide rod 522 with a vertical axis through a transverse frame, and the upper end surface of the test platform 1 is provided with a guide groove 523 corresponding to the guide rod 522 one by one.

[0034] like Figure 2 As shown, the test platform 1 is provided with a plurality of rectangular placement slots 53 which are arranged equidistantly from front to back.

[0035] like Figure 4 As shown, a U-shaped frame 54 is rotatably provided on the right connecting rod and is located above the connecting strip 52 . A groove 540 cooperating with the left connecting rod and the connecting strip 52 is formed on the rear end surface of the left vertical section of the U-shaped frame 54 .

[0036] First, the sample 6 is manually placed in the corresponding placement groove 53, and the rectangular area of ​​the placement groove 53 preliminarily limits the sample 6, which is convenient for the subsequent clamping, limiting and wear resistance test of the sample 6. Then the external electric push rod works to move the horizontal plate 2 4 to the left, and adjust the position of the sliding plate 50 so that the docking column 51 on the sliding plate 50 is inserted into the docking groove 510 on the corresponding rectangular plate 501 on the right side. Therefore, the two mounting plates 2, the horizontal plate 1 3, all the sliding plates 50, all the rectangular plates 501 and the horizontal plate 2 4 together form a plurality of rectangular frames to avoid the horizontal plate 2 4 from forming a cantilever during the wear resistance test, and at the same time guide the lower pressure plate 504 on the sliding plate 50 and the lower pressure plate 504 on the corresponding rectangular plate 501 to be opposite to each other left and right.

[0037] The horizontal plate 24 continues to move left, causing the horizontal plate 13 to move left and compress the spring 1 511. The elastic force generated by the deformation of the spring 1 511 ensures that the sliding plate 50 and the rectangular plate 501 always remain in close contact during the subsequent left and right reciprocating movement test. Then the horizontal plate 13 pushes the sliding plate 50 and the rectangular plate 501 to move left to the top of the corresponding placement slot 53. At this time, the two left and right opposite lower pressure plates 504 are located above the two sides of the placement slot 53. The U-shaped frame 54 is rotated so that the groove 540 on the U-shaped frame 54 is inserted into the adjacent connecting rod on the left, and the U-shaped frame 54 is located above the adjacent connecting strip 52 on the left. At this time, the U-shaped frame 54 is locked, so that the left and right connecting rods, the sliding plate 50 and the rectangular plate 501 are an integrated structure, which improves the stability during the subsequent reciprocating movement test and can also lock the sliding plate 50 and the rectangular plate 501.

[0038] Afterwards, the locking unit 55 works to move the right connecting rod downward, and the right connecting rod drives the connecting strip 52, the moving block 520 and the lower pressure plate 504 to move downward. The right connecting rod drives the left connecting strip 52 to move downward synchronously through the U-shaped frame 54, and the guide rod 522 on the moving block 520 is inserted into the corresponding guide groove 523. After the lower pressure plate 504 contacts the sample 6, the spring telescopic rod 521 is deformed. The elastic force generated by the deformation of the spring telescopic rod 521 makes the lower pressure plate 504 press the sample 6 tightly against the test platform 1. The two left and right guide rods 522, the two connecting strips 52 and the test platform 1 form a stable rectangular frame with the grinding head 503 in the middle, which improves the stability of the subsequent left and right movement test process of the grinding head 503.

[0039] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the locking unit 55 includes a mounting bolt 550, and a mounting bolt 550 with a vertical axis is fixedly provided on the inner wall of the slot 500. A mounting hole 551 is provided on the rectangular plate 501. Except for the rearmost connecting rod on the right side, the other connecting rods on the right side are fixedly sleeved with an L-shaped frame 552, and an L-shaped pad 553 is fixedly provided on the lower end surface of the vertical section of the L-shaped frame 552. A through hole is provided on the horizontal section of the pad 553, and the horizontal section of the pad 553 is located between the horizontal plate 24 and the adjacent rear rectangular plate 501. The rearmost connecting rod on the right side and the adjacent mounting bolt 550 are jointly sleeved with a locking plate 554, and a nut 555 is threadedly installed on the mounting bolt 550.

[0040] like Figure 6 As shown, pads 56 are fixedly provided at both ends of the lower end surface of the locking plate 554 .

[0041] like Figure 6 As shown, the upper fixing sleeve of the right connecting rod is provided with a lower pressing ring 57 located above the rectangular plate 501 .

[0042] During operation, the frontmost rectangular plate 501 is manually installed in the frontmost slot 500, and the mounting bolt 550 is passed through the mounting hole 551 on the rectangular plate 501. Then, the left end of the L-shaped frame 552 is sleeved on the connecting rod on the corresponding rectangular plate 501, and the pad 553 on the L-shaped frame 552 is placed in the adjacent slot 500 on the rear side, and then the mounting bolt 550 corresponding to the slot 500 is passed through the mounting hole 551 on the rear rectangular plate 501 to complete the installation and placement of the rectangular plate 501. Repeat the above process to complete the assembly of all rectangular plates 501 and L-shaped frames 552, so that the left end of the L-shaped frame 552 is located above the corresponding lower pressure ring 57, and its upper pad 553 is located below the corresponding rectangular plate 501. Finally, install the locking plate 554 on the rear right connecting rod and the rear mounting bolt 550. The pad 56 set on the locking plate 554 makes the locking plate 554 close to the corresponding lower pressure ring 57 and the rear rectangular plate 501, and then the sliding plate 50 and the rectangular plate 501 are docked.

[0043] After completing the moving docking process of the sliding plate 50 and the rectangular plate 501, all the L-shaped frames 552 and the locking plate 554 are manually pressed down, and the lower pressing ring 57 is pressed down, so that the right connecting rod moves downward synchronously, so that the lower pressing plate 504 presses down the template 6, and finally the lower pressing ring 57 is tightly attached to the upper end surface of the rectangular plate 501, and then the nut 555 on the rear side mounting bolt 550 is manually tightened to complete the locking process of the rectangular plate 501, the L-shaped frame 552 and the locking plate 554.

[0044] In the above-mentioned fixing process, all the rectangular plates 501 can be locked only by a single nut 555 on the rearmost locking plate 554, which is convenient for installation and disassembly, and makes all the grinding heads 503 receive the reaction force during the left and right reciprocating movement test by all the rectangular plates 501, thereby improving the stability during the test. Secondly, it is convenient to install different numbers of rectangular plates 501 to form the required number of test stations, and can measure the wear resistance test between grinding heads 503 of different materials and the paint sample 6 after spraying the same paint at a single time, and compare them, so as to avoid replacing the grinding head 503 and repeating the test, thereby improving the test efficiency and the applicability of the tester.

[0045] like Figure 3 , Figure 4 and Figure 5 As shown, a T-shaped groove is provided on the front end surface of the rectangular block 502, a T-shaped block 58 is installed in the T-shaped groove, a grinding head 503 is fixedly arranged on the lower end surface of the T-shaped block 58, an adjustment group 59 is provided on the rectangular block 502, and the adjustment group 59 includes a side plate 590, a side plate 590 is fixedly provided on the left connecting strip 52, a plurality of locking holes 591 equidistantly arranged from top to bottom are provided on the side plate 590, an adjustment block 592 is slidably sleeved on the mounting rod up and down, a spring 2 593 sleeved on the mounting rod is fixedly provided between the adjustment block 592 and the rectangular block 502, a tightening sleeve 594 sleeved on the mounting rod is fixedly provided on the lower end surface of the rectangular block 502, a locking hole 2 is provided on the left end surface of the adjustment block 592, a locking rod 596 is inserted and installed between the locking hole 2 and the corresponding locking hole 1 591.

[0046] After the sliding plate 50 and the rectangular plate 501 are locked and installed, the T-shaped blocks 58 on the grinding heads 503 of different materials are manually inserted into the corresponding T-shaped grooves to complete the assembly of the grinding heads 503. Figure 5 , from front to back, the first grinding head 503 and the third grinding head 503 are of the same material, and the second grinding head 503 is of another material. At this time, the lower end of the grinding head 503 is close to the corresponding template 6, and then the adjusting block 592 is manually pressed, so that the adjusting block 592 drives the tight sleeve 594 to move downward, and the spring 2 593 is compressed. When the locking hole 2 on the two front adjusting blocks 592 is aligned with the corresponding locking hole 1 591, the locking rod 596 is plugged and installed on the adjusting block 592 to complete the locking of the two front adjusting blocks 592, that is, the pressure generated by the two front springs 2 593 on the rectangular block 502 is the same, and then the third adjusting block 592 from front to back is repeatedly adjusted, so that the adjusting block 592 drives the tight sleeve 594 to press against the rectangular block 502, and the corresponding locking rod 596 is inserted into the corresponding locking hole 1 591 and locking hole 2, that is, at this time, the template 6 corresponding to the third adjusting block 592 is subjected to the maximum force of the grinding head 503.

[0047] By adding test stations and setting up multiple different comparison groups, the different materials of the grinding head 503 and the different forces applied by the grinding head 503 are used as references to simulate the wear of automobile paint under real conditions, thereby improving the authenticity of the test results. By testing and comparing at multiple stations at the same time, the efficiency of the test is improved, and the tedious process of repeatedly replacing the grinding head 503 and applying different downforces is avoided.

[0048] like Figure 1-Figure 6 As shown, in addition, the present invention also provides a method for testing the wear resistance of automobile coatings, comprising the following steps: S1, test preparation: the samples 6 that need to be tested for wear resistance are placed in the corresponding placement grooves 53 in sequence, and then the same number of sliding plates 50, rectangular plates 501 and L-shaped frames 552 are selected according to the number of samples 6 to be tested, and the L-shaped frames 552 and locking plates 554 are manually installed in sequence from front to back, and then the docking between the two is completed through the cooperation between the docking column 51 on the sliding plate 50 and the docking groove 510 on the rectangular plate 501.

[0049] S2, locking: manually press down all L-shaped frames 552 and locking plates 554, so that the lower pressure ring 57 moves downward, so that the right connecting rod moves downward synchronously, so that the lower pressure plate 504 presses down the template 6, and then manually tightens the nut 555 on the rear side mounting bolt 550 to complete the locking process of the rectangular plate 501, the L-shaped frame 552 and the locking plate 554.

[0050] S3. Comparative grouping: Manually insert the T-shaped block 58 on the grinding head 503 of different materials into the corresponding T-shaped groove to complete the assembly of the grinding head 503, and at the same time make the locking hole 2 on the adjustment block 592 face the different locking hole 1 591, and lock it through the locking rod 596 plug-in installation, so that the grinding head 503 applies different downward pressure forces to the template 6.

[0051] S4. Test: The external electric reciprocating push rod drives the horizontal plate 24, the rectangular plate 501 and all the grinding heads 503 to move back and forth to test the wear resistance of the sample 6. After the test, the sample 6 is taken out, the wear condition of the sample 6 is observed to evaluate its wear resistance, and finally the wear resistance performance results of the sample 6 under the same force and the wear resistance performance results of the sample 6 under different materials under different forces are compared.

[0052] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0053] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automobile coating wear resistance tester, characterized in that: include: A test platform, wherein two mounting plates are fixedly arranged on the upper end surface of the test platform, the two mounting plates are opposite to each other, a horizontal plate 1 is arranged on the left mounting plate for sliding left and right through a connecting shaft, and a horizontal plate 2 is arranged on the right mounting plate for sliding left and right through a horizontal rod; A testing mechanism is commonly provided between the horizontal plate one and the horizontal plate two, the testing mechanism comprising a sliding plate, a plurality of sliding plates arranged from front to back are slidably installed on the right end surface of the horizontal plate one, a plurality of card slots arranged equidistantly from front to back are provided on the upper end surface of the horizontal plate two, a rectangular plate is commonly provided between the card slot and the sliding plate, a rectangular block is slidably provided on the rectangular plate through a mounting rod with a vertical axis, a grinding head is provided below the rectangular block, the sliding plate and the rectangular plate both slide up and down and are penetrated by a connecting rod with a vertical axis, a lower pressing plate is provided on the connecting rod, the lower pressing plate is L-shaped, and the two lower pressing plates opposite to each other are symmetrical on the left and right; A locking unit is provided between the horizontal plate 1 and the horizontal plate 2.

2. The wear resistance tester for automobile coatings according to claim 1, characterized in that: The testing mechanism also includes a docking column, a docking column with an axis extending from left to right is fixedly arranged on the right end face of the sliding plate, a docking groove corresponding to the docking column is opened on the left end face of the rectangular plate, the right end of the docking column is chamfered, and a spring 1 mounted on the connecting shaft is fixedly arranged between the horizontal plate 1 and the left mounting plate.

3. The wear resistance tester for automobile coatings according to claim 2, characterized in that: The testing mechanism also includes a connecting bar, the lower end surface of the connecting rod is fixedly provided with a connecting bar, the lower end surface of the connecting bar is slidably provided with a moving block, the lower end surface of the moving block is fixedly connected to the lower pressure plate through a spring telescopic rod with a vertical axis, the opposite back surfaces of the two left and right opposite moving blocks are fixedly provided with guide rods with vertical axes through a transverse frame, and the upper end surface of the test platform is provided with guide grooves corresponding to the guide rods one by one.

4. The wear resistance tester for automobile coatings according to claim 3, characterized in that: The test platform is provided with a plurality of rectangular placement slots which are arranged equidistantly from front to back.

5. The wear resistance tester for automobile coatings according to claim 3, characterized in that: A U-shaped frame located above the connecting strip is rotatably arranged on the right connecting rod, and a groove cooperating with the left connecting rod and the connecting strip is provided on the rear end surface of the left vertical section of the U-shaped frame.

6. The wear resistance tester for automobile coatings according to claim 4, characterized in that: The locking unit also includes a mounting bolt, a mounting bolt with a vertical axis is fixedly provided on the inner wall of the slot, a mounting hole is opened on the rectangular plate, and except for the rearmost connecting rod on the right side, the other connecting rods on the right side are fixedly sleeved with an L-shaped frame, and an L-shaped pad is fixedly provided on the lower end surface of the vertical section of the L-shaped frame, and a through hole is opened on the horizontal section of the pad, and the horizontal section of the pad is located between the second horizontal plate and the adjacent rear rectangular plate, and the rearmost connecting rod on the right side and the adjacent mounting bolt are jointly sleeved with a locking plate, and a nut is threadedly installed on the mounting bolt.

7. The wear resistance tester for automobile coatings according to claim 6, characterized in that: Pads are fixedly arranged at both ends of the lower end surface of the locking plate.

8. The automobile coating wear resistance tester according to claim 6, characterized in that: The upper fixing sleeve of the connecting rod on the right side is provided with a lower pressure ring located above the rectangular plate.

9. The automobile coating wear resistance tester according to claim 8, characterized in that: A T-shaped groove is provided on the front end surface of the rectangular block, and a T-shaped block is slidably installed in the T-shaped groove. The grinding head is fixedly arranged on the lower end surface of the T-shaped block. An adjustment group is provided on the rectangular block, and the adjustment group includes a side plate. A side plate is fixedly arranged on the connecting strip on the left side, and a plurality of locking holes 1 arranged equidistantly from top to bottom are provided on the side plate. An adjustment block is slidably sleeved on the mounting rod up and down, and a spring 2 sleeved on the mounting rod is fixedly arranged between the adjustment block and the rectangular block. A tightening sleeve sleeved on the mounting rod is fixedly arranged on the lower end surface of the rectangular block, and a locking hole 2 is provided on the left end surface of the adjustment block, and a locking rod is inserted and installed between the locking hole 2 and the corresponding locking hole 1.

10. A method for testing the wear resistance of automobile coatings, which is accomplished by using the automobile coating wear resistance tester according to claim 9, characterized in that: The following steps are involved: S1. Test preparation: Place the sample in the corresponding placement slot, then select the same number of sliding plates, rectangular plates and L-shaped frames according to the number of samples to be tested, manually install the L-shaped frames and locking plates from front to back, and then complete the docking of the two through the cooperation between the docking columns on the sliding plates and the docking grooves on the rectangular plates; S2, locking: Press down all L-shaped frames and locking plates, so that the lower pressure ring moves down, so that the right connecting rod moves down synchronously, so that the lower pressure plate presses down the sample, and then tightens the nut on the last side mounting bolt to complete the locking process; S3, comparison grouping: insert the T-shaped blocks on the grinding heads of different materials into the corresponding T-shaped slots to complete the assembly of the grinding heads, and lock them by plugging and installing the locking rods, so that the grinding heads exert different downward pressures on the sample; S4. Test: All grinding heads move back and forth to test the wear resistance of the sample. After the test, take out the sample, observe the wear of the sample and evaluate its wear resistance.

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