Paint film hardness detection device

By combining hydraulic rods and moving devices, the problem of inaccurate pencil scratches caused by the instability of test samples was solved, thus achieving stability and accuracy in paint film hardness testing.

CN223742227UActive Publication Date: 2025-12-30CHANGZHOU GUANGHE KERUI DETECTION TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202422992590.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-12-30
Estimated Expiration
2034-12-05

AI Technical Summary

Technical Problem

Existing paint film hardness testing devices suffer from inaccurate pencil marks due to instability at the bottom of the test sample, affecting the test results.

Method used

A paint film hardness testing device was designed, which includes a hydraulic rod and a moving device. The top plate is adjusted to fit the bottom surface of the test sample by the extension and retraction of the hydraulic rod. The test sample is prevented from moving by a hydraulic cylinder. The pencil is moved and its angle is adjusted precisely by a lead screw and slider structure driven by a motor.

Benefits of technology

This ensures stable placement of the test specimens and accurate pencil scratch results, guaranteeing the accuracy and reliability of paint film hardness testing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a paint film hardness detection device, which belongs to the field of paint film detection and comprises a bottom plate, a first hydraulic rod fixedly mounted at the rear end of the top surface of the bottom plate, a fixing plate fixedly mounted on the top surface of the first hydraulic rod, a moving device fixedly mounted on the outer side of the fixing plate, a slider slidably mounted on the inner side of the moving device, and an elastic clamp rotatably mounted at the outer end of the slider. An elastic clamp is arranged on the bottom plate, a pencil is clamped at the outer end of the elastic clamp, a second hydraulic rod is fixedly installed at the front end of the middle of the bottom plate, a top plate is fixedly installed on the top face of the second hydraulic rod, a third hydraulic rod is fixedly installed in the middle of the top face of the bottom plate, and a pressing plate is fixedly installed on the top of the third hydraulic rod. The plurality of top plates are respectively lifted or descended to be better attached to the bottom surface of a test product, so that the test product is stably placed, scratches are accurate, and a normal detection effect is ensured; the hydraulic cylinder III is shortened, so that the pressing plate is pressed on a test product, the test product is prevented from moving, and the hardness of a paint film is normally detected.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lacquer film detection, especially to a lacquer film hardness detection device. BACKGROUND

[0002] The coating film is composed of multiple coating layers, and the number of coating layers is determined according to the requirements of the coated object, and generally includes a primer layer, an intermediate coating layer and a topcoat layer. The coating film reflects the effect of the matching use of the paint.

[0003] After the coating film is sprayed, a hardness detection device needs to be used to detect the hardness. Usually, a pencil is used to slide on the surface of the test product to form a scratch. After reciprocating 5 times, the surface is cleaned with a rubber, and then the depth of the scratch is observed. However, the bottom of the test product is not always flat, and it may not be stable after being placed on the workbench, which may result in inaccurate pencil scratches and thus the hardness detection of the lacquer film cannot be achieved. UTILITY MODEL CONTENT

[0004] The purpose of the utility model is to provide a lacquer film hardness detection device.

[0005] Technical scheme: including the base plate, the hydraulic rod one is fixedly installed at the top surface rear end of the base plate, the fixed plate is fixedly installed at the top surface of the hydraulic rod one, the moving device is fixedly installed at the outer side of the fixed plate, the sliding block is slidably installed at the inner side of the moving device, the elastic clamp is rotatably installed at the outer end of the sliding block, the pencil is clamped at the outer end of the elastic clamp, the hydraulic rod two is fixedly installed at the front end of the middle part of the base plate, the top plate is fixedly installed at the top surface of the hydraulic rod two, the hydraulic rod three is fixedly installed at the middle part of the top surface of the base plate, the pressing plate is fixedly installed at the top of the hydraulic rod three, and the moving device is fixedly installed on the front side of the fixed plate in a bolted manner.

[0006] By adopting the above technical scheme, the front end of the middle part of the base plate is provided with the hydraulic rod two. The hydraulic rod two is telescopic, and multiple top plates are respectively raised or lowered to better fit the bottom surface of the test product, so that the test product is stable, the scratch is accurate, and the normal detection effect is ensured. The hydraulic cylinder three is shortened, the pressing plate can press on the test product, the test product is prevented from moving, and the hardness detection of the lacquer film is normally performed.

[0007] Optionally, the moving device includes a sliding channel, a motor one is fixedly installed at the outer end of the sliding channel, a rotating shaft of the motor one is fixedly installed with a lead screw, the sliding block is slidably installed on the outer side of the lead screw, the sliding block is slidably installed on the inner side of the sliding channel, and a heat dissipation flow channel is arranged on the outer side of the motor one to increase the air contact area and accelerate heat dissipation. The motor one adopts a stepping motor.

[0008] By adopting the above technical scheme, the motor one is rotated to rotate the lead screw, the lead screw is engaged with the sliding block, the sliding block is slid in the sliding channel, and the moving work of the moving device is completed.

[0009] Optionally, one end of the lead screw is rotatably mounted inside the support seat, the support seat is fixedly mounted inside one end of the slide rail, and the other end of the lead screw is fixedly mounted with a rotating column, which is rotatably mounted on a rotating seat, and the rotating seat is fixedly mounted inside the other end of the slide rail. The support seat and the rotating seat are fixedly mounted inside the slide rail at both ends by bolts.

[0010] By adopting the above technical solution, one end of the lead screw rotates within the support seat to maintain stable rotation of one end of the lead screw, and the rotating column rotates within the rotating seat to maintain stable rotation of the other end of the lead screw.

[0011] Optionally, a connecting seat is fixedly installed on the outside of the slider, and an elastic clamp is rotatably installed on the inside of the connecting seat. The connecting seat is fixedly installed on the outer end of the slider by bolts.

[0012] By adopting the above technical solution, the elastic clamp rotates inside the connecting seat to adjust the angle of the pencil.

[0013] Optionally, a bolt is installed in the middle of the connecting seat, with the bottom of the bolt installed inside the elastic clamp. An internal thread is provided in the middle of the connecting seat, and a bolt is installed inside the internal thread.

[0014] By adopting the above technical solution, bolts are used to fix the elastic clip, and the angle of the elastic clip is fixed after the angle is adjusted.

[0015] Optionally, multiple support columns are fixedly installed on the bottom surface of the base plate, and bases are fixedly installed on the bottom surface of the support columns. The bases are fixedly installed on the bottom surface of the support columns by means of threads.

[0016] By adopting the above technical solution, the support column is used to support the base plate, and the base allows the device to be placed stably on the ground.

[0017] Optionally, a sliding column is fixedly installed at the rear end of the top surface of the base plate, and a fixing plate is slidably installed on the outside of the sliding column. The rear end of the fixing plate is provided with a round hole for installation on the outside of the sliding column.

[0018] By adopting the above technical solution, the sliding column is used to guide the fixed plate, enabling it to slide stably up and down.

[0019] Optionally, a limiting plate is fixedly installed on the top surface of the sliding column, and the limiting plate is fixedly installed on the top surface of the sliding column by welding.

[0020] By adopting the above technical solution, the limiting plate is used to limit the movement of the fixed plate and protect the fixed plate.

[0021] Beneficial effects: 1. This utility model has a hydraulic rod 2 at the front end of the middle part of the base plate. The hydraulic rod 2 can raise or lower multiple top plates by telescoping, so as to better fit the bottom surface of the test sample, make the test sample stable, make the scratch accurate, and ensure normal testing effect; 2. The hydraulic cylinder 3 set in this utility model can shorten, so that the pressure plate can press on the test sample, prevent the test sample from moving, and make the hardness test of the paint film normal. Attached Figure Description

[0022] Fig. 1 This is an overall structural diagram of an embodiment of the present utility model;

[0023] Fig. 2 This is a structural diagram of the mobile device according to an embodiment of the present utility model;

[0024] Fig. 3 This is a diagram of the pencil clamping structure according to an embodiment of the present invention;

[0025] Fig. 4 This is a diagram of the supporting structure of an embodiment of the present utility model;

[0026] Fig. 5 This is a diagram of the clamping structure according to an embodiment of the present invention;

[0027] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Hydraulic rod one; 3. Moving device; 301. Slide rail; 302. Motor one; 303. Lead screw; 304. Slider; 305. Rotating column; 306. Rotating seat; 307. Support seat; 4. Sliding column; 5. Limiting plate; 6. Support column; 7. Base; 8. Hydraulic rod two; 9. Hydraulic rod three; 10. Top plate; 11. Pressure plate; 12. Connecting seat; 13. Elastic clamp; 14. Bolt; 15. Pencil; 16. Fixing plate. Detailed Implementation

[0028] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, such as... Figs. 1 to 5The invention includes a base plate 1, a hydraulic rod 2 fixedly mounted on the rear end of the top surface of the base plate 1, a fixed plate 16 fixedly mounted on the top surface of the hydraulic rod 2, a moving device 3 fixedly mounted on the outer side of the fixed plate 16, a slider 304 slidably mounted on the inner side of the moving device 3, an elastic clamp 13 rotatably mounted on the outer end of the slider 304, a pencil 15 clamped on the outer end of the elastic clamp 13, a hydraulic rod 8 fixedly mounted on the front end of the middle part of the base plate 1, a top plate 10 fixedly mounted on the top surface of the hydraulic rod 8, a hydraulic rod 9 fixedly mounted on the middle part of the top surface of the base plate 1, and a pressure plate 11 fixedly mounted on the top of the hydraulic rod 9. The invention features a hydraulic rod 8 at the front end of the middle part of the base plate 1. The hydraulic rod 8, through extension and retraction, allows multiple top plates 10 to rise or fall separately, better conforming to the bottom surface of the test sample, ensuring stable placement of the test sample, accurate scratches, and guaranteeing normal testing results. 2. The shortening of the hydraulic cylinder 9 in this invention allows the pressure plate 11 to press against the test sample, preventing the test sample from moving and ensuring normal hardness testing of the paint film.

[0029] The moving device 3 includes a slide rail 301. A motor 302 is fixedly installed at the outer end of the slide rail 301. A lead screw 303 is fixedly installed on the rotating shaft of the motor 302. A slider 304 is installed on the outer circumference of the lead screw 303. The slider 304 is slidably installed on the inner side of the slide rail 301. When the motor 302 rotates, the lead screw 303 rotates, and the lead screw 303 meshes with the slider 304, so that the slider 304 slides in the slide rail 301, thus completing the moving work of the moving device 3.

[0030] One end of the lead screw 303 is rotatably mounted inside the support base 307, and the support base 307 is fixedly mounted inside one end of the slide rail 301. The other end of the lead screw 303 is fixedly mounted with a rotating column 305, which is rotatably mounted on a rotating seat 306. The rotating seat 306 is fixedly mounted inside the other end of the slide rail 301. One end of the lead screw 303 rotates within the support base 307 to maintain stable rotation of one end of the lead screw 303, and the rotating column 305 rotates within the rotating seat 306 to maintain stable rotation of the other end of the lead screw 303.

[0031] A connecting seat 12 is fixedly installed on the outside of the slider 304, and an elastic clip 13 is rotatably installed on the inside of the connecting seat 12. The elastic clip 13 rotates inside the connecting seat 12 for adjusting the angle of the pencil.

[0032] A bolt 14 is installed in the middle of the connecting seat 12. The bottom of the bolt 14 is installed inside the elastic clip 13. The bolt 14 is used to fix the elastic clip 13 and fix its angle after the angle of the elastic clip 13 is adjusted.

[0033] Multiple support columns 6 are fixedly installed on the bottom surface of the base plate 1, and bases 7 are fixedly installed on the bottom surface of the support columns 6. The support columns 6 are used to support the base plate 1, and the bases 7 make the device stable on the ground.

[0034] A sliding column 4 is fixedly installed at the rear end of the top surface of the base plate 1. A fixed plate 16 is slidably installed on the outside of the sliding column 4. The sliding column 4 is used to guide the fixed plate 16 so that it can slide up and down stably.

[0035] A limiting plate 5 is fixedly installed on the top surface of the sliding column 4. The limiting plate 5 is used to limit the movement of the fixed plate and protect the fixed plate 16.

[0036] The implementation principle of the paint film hardness testing device in this application embodiment is as follows: When using the paint film hardness testing device, firstly, according to the height of the bottom surface of the paint film being tested, different hydraulic rods are controlled to extend and retract at different rates, causing multiple top plates 10 to rise or fall respectively. The test sample is placed on the top plate 10, and the hydraulic rods are controlled to shorten, causing the pressure plate 11 to press the test sample tightly. A pencil 15 is installed in the elastic clamp 13, and the elastic clamp 13 rotates inside the connecting seat 12 to complete the angle adjustment of the pencil 15. Bolts are then used to... 14. Fix the angle and control the hydraulic rod 2 to shorten, causing the pencil 15 at the outer end to descend. Control the motor 302 to rotate, driving the lead screw 303 to rotate. The rotating column 305 at one end of the lead screw 303 rotates in the rotating seat 306, and the other end of the lead screw 303 rotates inside the support seat 307. The threaded part of the lead screw 303 rotates with the meshing part of the slider 304, and the slider 304 slides in the slide rail 301, causing the pencil 15 to mark on the test sample. Repeat the operation to complete multiple markings, remove the test sample, and perform hardness testing of the paint film.

[0037] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A paint film hardness detection device characterized by comprising: The utility model provides a pencil automatic fixing device, including bottom plate (1), the top surface rear end fixed mounting of bottom plate (1) has hydraulic rod one (2), the top surface fixed mounting of hydraulic rod one (2) has fixed plate (16), the outer side fixed mounting of fixed plate (16) has mobile device (3), the inner side sliding mounting of mobile device (3) has sliding block (304), the outer end rotation mounting of sliding block (304) has elastic clip (13), the clamping of elastic clip (13) outer end has pencil (15), the front end fixed mounting of bottom plate (1) middle part has hydraulic rod two (8), the top surface fixed mounting of hydraulic rod two (8) has top plate (10), the top surface fixed mounting of bottom plate (1) middle part has hydraulic rod three (9), the fixed mounting of hydraulic rod three (9) top has pressing plate (11).

2. The paint film hardness detection device according to claim 1, characterized in that: The mobile device (3) includes a slide (301), the outer end of the slide (301) is fixedly installed with a motor one (302), the rotating shaft of the motor one (302) is fixedly installed with a lead screw (303), the circumference of the lead screw (303) is installed with a sliding block (304), and the sliding block (304) is slidably installed in the inner side of the slide (301).

3. The paint film hardness detection device according to claim 2, wherein: One end of the lead screw (303) is rotatably installed in the inner side of a support seat (307), the support seat (307) is fixedly installed at one end of the inner side of the slide (301), the other end of the lead screw (303) is fixedly installed with a rotating column (305), the rotating column (305) is rotatably installed in a rotating seat (306), and the rotating seat (306) is fixedly installed at the other end of the inner side of the slide (301).

4. The paint film hardness detection device according to claim 2, characterized in that: The outer side of the sliding block (304) is fixedly installed with a connecting seat (12), and the elastic clip (13) is rotatably installed in the inner side of the connecting seat (12).

5. The paint film hardness detection device according to claim 4, wherein: A bolt (14) is installed in the middle of the connecting seat (12), and the bottom of the bolt (14) is installed in the inner end of the elastic clip (13).

6. The paint film hardness detection device according to claim 1, wherein: A plurality of support columns (6) are fixedly installed on the bottom surface of the bottom plate (1), and the bottom surface of the support column (6) is fixedly installed with a base (7).

7. The paint film hardness detection device of claim 1, wherein: The rear end of the top surface of the bottom plate (1) is fixedly installed with a sliding column (4), and the outer side of the sliding column (4) is slidably installed with a fixed plate (16).

8. The paint film hardness detection device according to claim 7, wherein: The top surface of the sliding column (4) is fixedly installed with a limiting plate (5).