Device for detecting adhesive force of part coating

Abstract

The utility model relates to the technical field of spraying quality detection, in particular to a part coating adhesive force detection device which comprises a rack, a supporting platform is arranged on the rack, and a supporting plate capable of moving up and down and a power assembly driving the supporting plate to move are installed on the rack and located above the supporting platform. A scribing knife capable of horizontally sliding is mounted at the bottom of the supporting plate, and a supporting force detection device is mounted between the scribing knife and the supporting plate. According to the device, the counter-acting force data adopted by two times of gridding are consistent or are in a numerical range, so that scratches with basically consistent depths can be scribed, and the detection data are more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying quality detection, in particular to a device for detecting the adhesion of a part coating. Background Art

[0002] Adhesion refers to the degree of bonding between the coating and the substrate, and is one of the important indicators of coating quality. Domestic adhesion test methods generally use the following three methods: circle method (GB / T 1720), grid method (GB / T 9286) and pull-off method (GB / T5210).

[0003] The most commonly used method is the cross-cut method, also known as the 100-grid adhesion test method. Use a knife to cut 100 grids on the surface, stick a tape in the center of the formed grid, and then pull it off smoothly to observe the phenomenon of paint film shedding, and make a judgment by calculating the state of the grid in the cross-cut. Specifically, first place the painted sample on a flat table, use a 100-grid knife to evenly apply force perpendicular to the surface of the sample, and smoothly draw at least 6 parallel cutting lines, and then cross the first cutting line at 90° to draw 6 parallel lines to form a grid pattern, and then clean the lines in the grid, apply tape in the center of the grid, and make sure it is in full contact with the paint film. Lift the tape to form an angle of about 60° with the sample, and continuously and smoothly withdraw the tape, and then observe the shedding of the paint film in the grid.

[0004] In the prior art, scribing is generally performed with a handheld scribing knife. Since each test product needs to be scribed at least twice horizontally and vertically during scribing, if the scribing force is uneven for the same test product, it will lead to different scribing depths, which will eventually lead to inaccurate testing. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art that uneven scribing force will lead to different scribing depths and ultimately inaccurate testing, and proposes a device for detecting the adhesion of coatings on parts.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for detecting the adhesion of coatings on parts comprises a frame, on which a supporting platform is provided, on which a supporting plate capable of moving up and down and a power assembly for driving the supporting plate are installed above the supporting platform, a scribing knife capable of sliding horizontally is installed at the bottom of the supporting plate, and a supporting force detection device is installed between the scribing knife and the supporting plate.

[0008] The power assembly comprises a threaded rod with a vertical axis and threadedly connected to the frame, a rotating handle is installed on the top end of the threaded rod, and the bottom end of the threaded rod is rotatably connected to the support plate.

[0009] A plurality of vertically arranged guide rods are slidably connected around the support plate, the guide rods are fixedly arranged with the frame, a thrust spring is sleeved on the guide rods, and the thrust spring is supported between the bottom of the support plate and the frame.

[0010] The supporting force detection device includes a slider, a pressure sensor, and a base. The slider is slidably connected to the slideway at the bottom of the supporting plate. The pressure sensor is installed between the bottom of the slider and the top of the base. The pressure sensor is connected to the pressure display through a wire. The grid knife is installed at the bottom of the base.

[0011] A tension spring is connected between the sliding block and the supporting plate.

[0012] The slider is provided with a pulling member, and / or the base is provided with a pulling member.

[0013] Two limit blocks are fixedly connected to the support platform, and the two limit blocks are arranged 90° apart. The support platform is rotatably connected to the frame, and the rotation axis is vertically arranged. A limit rod is fixedly connected to one side of the support platform, and the frame is equipped with two stop blocks arranged 90° apart.

[0014] The utility model provides a device for detecting adhesion of coatings on parts, which has the beneficial effect that, because the reaction force data used in two scratches are consistent or within a numerical range, scratches with substantially consistent depth can be made, making the detection data more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the bottom parts of the support plate of the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 3 The top view of the support platform of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 4 The top view of the support platform of the utility model is shown in FIG. Figure 2 .

[0019] In the figure: frame 1, support platform 2, thrust spring 3, pulling member 4, support plate 5, guide rod 6, pressure display 7, threaded rod 8, rotating handle 9, tension spring 10, slider 11, pressure sensor 12, base 13, grid knife 14, limit block 15, limit rod 16, stopper 17, slideway 18. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 A device for detecting the adhesion of coatings on parts comprises a frame 1, on which a supporting platform 2 is arranged, on which a supporting plate 5 capable of moving up and down and a power assembly for driving the supporting plate 5 to move are arranged above the supporting platform 2, a scribing knife 14 capable of sliding horizontally is arranged at the bottom of the supporting plate 5, and a supporting force detecting device is arranged between the scribing knife 14 and the supporting plate 5.

[0022] When the device is used, the test product is placed on the support platform 2, and the height of the support plate 5 is adjusted by the power component. The pressure of the scribing knife 14 at the bottom of the support plate 5 on the test product is changed by adjusting the height of the support plate 5. The reaction force of the scribing knife 14 on the support plate 5 is detected by the support force detection device, and the reaction force during the first scribing is recorded. Then, the scribing knife 14 is pulled to move for the first scribing. After that, the support plate 5 is moved upward, and the test product is rotated 90°. Then, the above steps are repeated again, and the second scribing is performed after adjustment according to the reaction force data recorded for the first time. Since the reaction force data used for the two scribings are consistent or within a numerical range, scratches with basically the same depth can be made, making the test data more accurate.

[0023] As an implementation method, refer to Figure 1 , Figure 2 The power assembly includes a threaded rod 8 with a vertical axis and threadedly connected to the frame 1. A rotating handle 9 is installed on the top of the threaded rod 8. The bottom end of the threaded rod 8 is rotatably connected to the support plate 5. The threaded rod 8 is rotated by rotating the rotating handle 9. Under the action of the threaded rod 8 and the frame 1, the support plate 5 rotatably connected to the bottom end of the threaded rod 8 moves upward or downward.

[0024] As a guiding method, the support plate 5 is slidably connected to a plurality of vertically arranged guide rods 6 on all sides. The guide rods 6 are fixed to the frame 1. A thrust spring 3 is sleeved on the guide rods 6. The thrust spring 3 is supported between the bottom of the support plate 5 and the frame 1. The guide rods 6 enable the support plate 5 to move up and down stably.

[0025] refer to Figure 1 , Figure 2The supporting force detection device includes a slider 11, a pressure sensor 12, and a base 13. The slider 11 is slidably connected to the slideway 18 at the bottom of the support plate 5. The pressure sensor 12 is installed between the bottom of the slider 11 and the top of the base 13. The pressure sensor 12 is connected to the pressure display 7 through a wire. The grid knife 14 is installed at the bottom of the base 13. The pressure display 7 is placed at a position convenient for staff to watch as needed. The force between the slider 11 and the base 13 is detected by the pressure sensor 12, and the pressure data is displayed in real time by the pressure display 7.

[0026] A tension spring 10 is connected between the slider 11 and the support plate 5 to facilitate the slider 11 to drive the grid knife 14 to reset.

[0027] The slider 11 is equipped with a pulling member 4, and / or the base 13 is equipped with a pulling member 4, and the pulling member 4 pulls the scribing knife 14 to scratch the inspected product.

[0028] Two limit blocks 15 are fixedly connected to the support platform 2, and the two limit blocks 15 are set 90° apart. The support platform 2 is rotatably connected to the frame 1, and the rotation axis is set vertically. A limit rod 16 is fixedly connected to one side of the support platform 2, and the frame 1 is equipped with two stoppers 17 set 90° apart. Figure 3 , place the test product between the limit blocks 15, the limit rod 16 abuts against a stopper 17, and then perform the first gridding, refer to Figure 4 , and then the supporting platform 2 is rotated 90° so that the limiting rod 16 abuts against another stopper 17, and then the second scribing is performed to facilitate the vertical scribing operation.

[0029] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technical solution, concept, and design obtained by equivalent replacement or change based on the technical solution and utility model concept of the utility model by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model.

Claims

1. A device for detecting adhesion of coatings on parts, comprising a frame (1), characterized in that: The frame (1) is provided with a support platform (2); a support plate (5) capable of moving up and down and a power assembly for driving the support plate (5) to move are installed on the frame (1) above the support platform (2); a grid knife (14) capable of sliding horizontally is installed at the bottom of the support plate (5); and a support force detection device is installed between the grid knife (14) and the support plate (5).

2. A device for detecting adhesion of coating on parts according to claim 1, characterized in that: The power assembly comprises a threaded rod (8) with a vertically arranged axis and threadedly connected to the frame (1); a rotating handle (9) is installed at the top end of the threaded rod (8); and the bottom end of the threaded rod (8) is rotatably connected to the support plate (5).

3. A device for detecting adhesion of coating on parts according to claim 2, characterized in that: The support plate (5) is slidably connected to a plurality of vertically arranged guide rods (6) on all sides; the guide rods (6) are fixedly arranged on the frame (1); a thrust spring (3) is sleeved on the guide rods (6); and the thrust spring (3) is supported between the bottom of the support plate (5) and the frame (1).

4. A device for detecting adhesion of coatings on parts according to any one of claims 1 to 3, characterized in that: The supporting force detection device comprises a slider (11), a pressure sensor (12), and a base (13); the slider (11) is slidably connected to a slideway (18) at the bottom of a supporting plate (5); the pressure sensor (12) is installed between the bottom of the slider (11) and the top of the base (13); the pressure sensor (12) is connected to a pressure display (7) via a wire; and the grid knife (14) is installed at the bottom of the base (13).

5. A device for detecting adhesion of coating on parts according to claim 4, characterized in that: A tension spring (10) is connected between the sliding block (11) and the supporting plate (5).

6. A device for detecting adhesion of coating on parts according to claim 4, characterized in that: The slider (11) is installed with a pulling member (4), and / or the base (13) is installed with a pulling member (4).

7. A device for detecting adhesion of coating on parts according to any one of claims 1-3, 5-6, characterized in that: Two limit blocks (15) are fixedly connected to the support platform (2), and the two limit blocks (15) are arranged 90 degrees apart. The support platform (2) is rotatably connected to the frame (1), and the rotation axis is arranged vertically. A limit rod (16) is fixedly connected to one side of the support platform (2), and the frame (1) is equipped with two stop blocks (17) arranged 90 degrees apart.

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