A paint coating hardness detection device for wear-resistant electric vehicle shell

Abstract

This utility model relates to a device for testing the hardness of paint coatings on wear-resistant electric vehicle shells. The device includes a main body, which comprises a placement block with an oblique hole at its top. The oblique hole forms a 45-degree angle with the horizontal plane. An auxiliary component is mounted on the placement block. The auxiliary component includes a sleeve slidably disposed on the oblique hole. A pencil passes through the sleeve, and a first locking screw is mounted on the sleeve to fix the position of the pencil. A positioning plate slidably passes through the placement block, with one end of the positioning plate facing the inner wall of the oblique hole on the corresponding side. This utility model relates to the technical field of coating hardness testing devices. This utility model improves the accuracy of pencil placement during replacement, reduces the error rate, and thus improves the efficiency of coating hardness testing.

Description

Technical Field

[0001] This utility model relates to the technical field of coating hardness testing devices, and in particular to a paint coating hardness testing device for wear-resistant electric vehicle housings. Background Technology

[0002] There are several methods for measuring the hardness of paint coatings. Most of these methods cannot ignore the steel plate beneath the paint coating. Currently, the pencil test method is used to measure the film hardness of paint coatings.

[0003] When using this method for measurement, it is necessary to change to pencils of different hardness. There are two points to note when installing the pencil: first, the angle between the pencil and the test board should be 45 degrees; second, ensure that the bottom of the pencil lead is flush with the bottom of the clamping device, and that the lead is in direct contact with the surface of the test board. The first point is to open a 45-degree placement hole in the clamping device. The second point is that when installing the pencil, the operator should first place the clamping device on the test plate, then place the pencil in the placement hole, and then use the locking screw to fix the position of the pencil after the pencil position is determined.

[0004] When using the locking screw to lock the pencil position, the operator must ensure that the clamping device is always on the test plate and that the clamping device is not tilted. If the clamping device is tilted before the locking operation, the pencil position will change, and the operator will need to re-clamp the pencil.

[0005] This clamping method requires attention to many details, making it time-consuming for operators to assemble and disassemble pencils. It is also prone to errors during the clamping process, further extending the assembly and disassembly time and reducing the efficiency of coating hardness testing. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a paint coating hardness testing device for wear-resistant electric vehicle shells, which can improve the accuracy of pencil placement during disassembly and replacement, reduce the error rate, and thus improve the efficiency of coating hardness testing.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A device for testing the hardness of paint coating on wear-resistant electric vehicle housings includes a device body, the device body including a placement block, the top of the placement block having an oblique hole with an angle of 45 degrees to the horizontal plane, and auxiliary components being provided on the placement block. The auxiliary component includes a sleeve that is slidably disposed on the inclined hole. A pencil passes through the sleeve. A first locking screw is provided on the sleeve to fix the position of the pencil on the sleeve. A positioning plate is slidably inserted through the placement block, one end of the positioning plate is directly opposite the inner wall of the corresponding side of the inclined hole, and the positioning plate is perpendicular to the inclined hole; A second locking screw is provided on the placement block, and the second locking screw fixes the position of the sleeve inside the placement block.

[0008] In a preferred embodiment, the present invention can be further configured such that: the top section of the sleeve is rectangular, the top section of the oblique hole is rectangular, and the sleeve and the oblique hole are slidably connected; The cross-sectional shape of the inner hole of the sleeve is adapted to the cross-sectional shape of the pencil.

[0009] In a preferred embodiment, the present invention can be further configured such that two sliding blocks are symmetrically and fixedly disposed on the outer side of the sleeve; The inner wall of the inclined hole is provided with sliding grooves on both sides, and the sliding block is located in the corresponding sliding groove, and the sliding block is slidably connected to the corresponding sliding groove.

[0010] In a preferred embodiment, this utility model can be further configured such that the maximum sliding distance of the sliding block within the corresponding groove is denoted as L2; When the pencil lead contacts one side of the positioning plate, the distance between the point where the bottom of the pencil lead contacts the positioning plate and the intersection of the straight line containing the central axis of the pencil lead and the bottom surface of the device body is recorded as L1; L1 equals L2.

[0011] In a preferred embodiment, the present invention can be further configured such that a movable component is provided on the placement block; The moving component includes a screw that passes through the placement block, one end of which is rotatably connected to one side of the positioning plate, and the screw is threadedly connected to the placement block.

[0012] In a preferred embodiment, this utility model can be further configured such that the straight line containing the central axis of the inner hole of the sleeve is collinear with the straight line containing the central axis of the pen refill. The straight line containing the central axis of the pen refill is perpendicular to the positioning plate.

[0013] In summary, this utility model has at least one of the following beneficial technical effects: 1. By setting up a sleeve and a positioning plate, the positioning plate positions the pencil on the sleeve, and the pencil is finally moved to the appropriate position through the sleeve. This improves the accuracy of pencil placement during replacement, reduces the error rate, and thus improves the efficiency of coating hardness testing.

[0014] 2. The first and second locking screws facilitate quick and easy fixation of the pencil and sleeve by the operator.

[0015] 3. By incorporating a screw, the operator can quickly move the positioning plate, while preventing the positioning plate from moving on its own. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure from the front view of this embodiment; Figure 2 yes Figure 1 Schematic diagram of the middle half section structure.

[0017] In the figure, 1 is the device body; 11 is the placement block; 2 is the oblique hole; 3 is the auxiliary component; 31 is the sleeve; 311 is the first locking screw; 32 is the positioning plate; 33 is the second locking screw; 4 is the sliding block; 41 is the slide groove; 5 is the moving component; and 51 is the screw. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Example: Reference Figures 1-2 As shown, this utility model discloses a device for testing the hardness of paint coating on a wear-resistant electric vehicle shell, comprising a device body 1, which includes a placement block 11. Wheels are rotatably mounted on both sides of the placement block 11, and a pad is fixedly mounted on the bottom of the placement block 11, with the bottom surface of the pad tangent to the wheels. The pad and the two wheels together create a space between the bottom of the placement block 11 and the test plate.

[0020] An oblique hole 2 is provided at the top of the placement block 11. The angle between the oblique hole 2 and the horizontal plane is 45 degrees. The bottom end of the oblique hole 2 is located between the wheel and the pad. The top cross-section of the oblique hole 2 is rectangular.

[0021] An auxiliary component 3 is provided on the placement block 11. The auxiliary component 3 includes a sleeve 31, which is slidably disposed on the inclined hole 2. The top section of the sleeve 31 is rectangular. The sleeve 31 is slidably connected to the inclined hole 2.

[0022] Two sliding blocks 4 are symmetrically fixed on the outer side of the sleeve 31. Sliding grooves 41 are provided on both sides of the inner wall of the inclined hole 2, and the sliding blocks 4 are located in the corresponding sliding grooves 41, and the sliding blocks 4 are slidably connected to the corresponding sliding grooves 41.

[0023] The maximum sliding distance of the sliding block 4 within the corresponding groove 41 is denoted as L2.

[0024] The cross-sectional shape of the inner hole of the sleeve 31 is adapted to the cross-sectional shape of the pencil. The straight line containing the central axis of the inner hole of the sleeve 31 is collinear with the straight line containing the central axis of the pencil lead. The pencil is inserted through the sleeve 31, and a first locking screw 311 is provided on the sleeve 31 to fix the position of the pencil on the sleeve 31.

[0025] During the movement of the sliding block 4, the first locking screw 311 is always located outside the placement block 11, and the user can easily rotate the first locking screw 311.

[0026] A second locking screw 33 is provided on the placement block 11, which fixes the position of the sleeve 31 inside the placement block 11. Within the effective sliding stroke of the sliding block 4, the second locking screw 33 can contact the sleeve 31.

[0027] A positioning plate 32 is slidably inserted on the placement block 11. One end of the positioning plate 32 is directly opposite the inner wall of the corresponding side of the inclined hole 2, and the positioning plate 32 is perpendicular to the inclined hole 2.

[0028] The straight line containing the central axis of the pen refill is perpendicular to the positioning plate 32. The width of the positioning plate 32 is matched with the width of the inner hole of the oblique hole 2.

[0029] When the pencil lead comes into contact with one side of the positioning plate 32, the distance between the point where the bottom of the pencil lead contacts the positioning plate 32 and the intersection of the straight line containing the central axis of the pencil lead and the bottom surface of the pad is denoted as L1. L1 equals L2.

[0030] A movable component 5 is provided on the placement block 11. The movable component 5 includes a screw 51, which passes through the placement block 11. One end of the screw 51 is rotatably connected to one side of the positioning plate 32, and the screw 51 is threadedly connected to the placement block 11.

[0031] The implementation principle of the above embodiments is as follows: When the operator needs to replace the pencil, the operator first reverses the first locking screw 311 to remove the old pencil. Then the operator reverses the second locking screw 33, pulls the sleeve 31 to its initial position, and uses the second locking screw 33 to fix the position of the sleeve 31.

[0032] Next, the operator rotates screw 51 to return positioning plate 32 to its initial position, that is, one end of positioning plate 32 contacts one side of the inner wall of inclined hole 2.

[0033] Next, the operator places the pencil to be placed on the sleeve 31. Due to the weight of the pencil, the pencil lead comes into contact with the positioning plate 32.

[0034] When the pencil position no longer changes, the operator fixes the pencil on the sleeve 31 by using the first locking screw 311.

[0035] Next, the operator reverses screw 51 to disengage the positioning plate 32 from the oblique hole 2. During the movement of the positioning plate 32, because the top of the positioning plate 32 is smooth, the movement of the positioning plate 32 will not change the position of the pencil and will not damage the pencil lead.

[0036] Finally, the operator rotates the second locking screw 33, causing the sleeve 31 to move diagonally downwards. When the sleeve 31 can no longer move, the second locking screw 33 fixes the position of the sleeve 31. At this point, the pencil lead is in contact with the test board.

[0037] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A device for testing the hardness of paint coating on a wear-resistant electric vehicle shell, comprising a device body (1), the device body (1) including a placement block (11), the top of the placement block (11) having an oblique hole (2), the oblique hole (2) forming an angle of 45 degrees with the horizontal plane, characterized in that, An auxiliary component (3) is provided on the placement block (11); The auxiliary component (3) includes a sleeve (31), which is slidably disposed on the inclined hole (2). A pencil is inserted through the sleeve (31). A first locking screw (311) is provided on the sleeve (31), which fixes the position of the pencil on the sleeve (31). A positioning plate (32) is slidably passed through the placement block (11). One end of the positioning plate (32) is directly opposite the inner wall of the inclined hole (2) on the corresponding side. The positioning plate (32) is perpendicular to the inclined hole (2). A second locking screw (33) is provided on the placement block (11), and the second locking screw (33) fixes the position of the sleeve (31) inside the placement block (11).

2. A paint coating hardness detection device for wear-resistant electric vehicle shell according to claim 1, characterized in that: The top section of the sleeve (31) is rectangular, the top section of the oblique hole (2) is rectangular, and the sleeve (31) and the oblique hole (2) are slidably connected. The inner cross-sectional shape of the sleeve (31) is adapted to the cross-sectional shape of the pencil.

3. The paint coating hardness testing device for wear-resistant electric vehicle housings according to claim 2, characterized in that: Two sliding blocks (4) are symmetrically fixed on the outer side of the sleeve (31); The inclined hole (2) has grooves (41) on both sides of its inner wall. The sliding block (4) is located in the corresponding groove (41) and is slidably connected to the corresponding groove (41).

4. A paint coating hardness detection device for wear-resistant electric vehicle shell according to claim 3, characterized in that: The maximum sliding distance of the sliding block (4) within the corresponding groove (41) is denoted as L2; When the pencil lead comes into contact with one side of the positioning plate (32), the distance between the point where the bottom of the pencil lead contacts the positioning plate (32) and the intersection of the straight line containing the central axis of the pencil lead and the bottom surface of the device body (1) is denoted as L1; L1 equals L2.

5. A paint coating hardness detection device for wear-resistant electric vehicle shell according to claim 4, characterized in that: The placement block (11) is provided with a moving component (5); The moving component (5) includes a screw (51) which passes through the placement block (11). One end of the screw (51) is rotatably connected to one side of the positioning plate (32), and the screw (51) is threadedly connected to the placement block (11).

6. A paint coating hardness detection device for wear-resistant electric vehicle shell according to claim 5, characterized in that: The straight line containing the central axis of the inner hole of the sleeve (31) is collinear with the straight line containing the central axis of the pen refill; The straight line containing the central axis of the pen refill is perpendicular to the positioning plate (32).

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