Sample preparation device for colored paint adhesive force detection test

Abstract

The utility model provides a sample preparation device for a colored paint adhesive force detection test, which belongs to the technical field of colored paint adhesive force detection and comprises a lower plate and an upper plate, and the upper plate is positioned above the lower plate; the lower plate is provided with a stepped hole, the stepped hole comprises an upper large hole section and a lower small hole section, the large hole section and the small hole section form an upward inner step, the large hole section is used for placing a gluing part with a larger outer diameter in the lower drawing head in a matched manner, and the small hole section is used for allowing a clamping part with a smaller outer diameter in the lower drawing head to penetrate; the inner step is used for supporting an outer step formed by the clamping part and the gluing part in the lower drawing head; the upper plate is provided with a vertically through test hole, the test hole is vertically opposite to the stepped hole, and a gluing part of an upper drawing head penetrates into the test hole in a matched manner; and the sample preparation device further comprises a weight which is positioned above the upper plate and is used for pressing the upper drawing head.

Description

Technical Field

[0001] The utility model generally relates to the technical field of paint adhesion detection, and more specifically relates to a sample preparation device for paint adhesion detection test. Background Art

[0002] When testing the adhesion of paint, a sample preparation device is used to prepare the sample. There are currently two preparation methods: one is to clamp the substrate with two relatively independent fixed plates, each of which is provided with a through hole; during preparation, one of the pulling heads is coated with glue and pressed on one side of the substrate, and after pressing for a certain period of time, it is flipped 180°, and the other pulling head is coated with glue and pressed on the other side of the substrate. Finally, the fixed plate, substrate and pulling head are supported and fixed with glue. The disadvantage of this method is that the centering is inaccurate, there is no positioning between the two fixed plates, and the centering of the two pulling heads cannot be guaranteed; the operation is complicated, the number of samples produced at a time is small, and the efficiency is low.

[0003] Another method is the utility model patent with the authorization announcement number CN210401176U, which includes an upper plate (i.e., the upper panel in the patent) and a lower plate (i.e., the lower panel in the patent). The upper plate and the lower plate are both provided with test column mounting holes. There are also positioning pins and fixing bolts between the upper plate and the lower plate. The positioning pins ensure that the test column mounting holes of the upper plate and the lower plate are aligned vertically, and the fixing bolts fix the upper plate and the lower plate together. When in use, the substrate needs to be placed between the upper plate and the lower plate, one of the pulling heads is coated with glue and pressed on one side of the substrate, and after pressing for a certain period of time, it is turned over, and the other pulling head is coated with glue and pressed on the other side of the substrate.

[0004] Both methods of the prior art require flipping, which causes inconvenience in operation. In addition, the operation of pressing the pulling head and the bottom plate in the prior art is also very inconvenient. Utility Model Content

[0005] The utility model provides a sample preparation device for a paint adhesion detection test, so as to solve the technical problem of inconvenient operation when preparing samples in the prior art.

[0006] The sample preparation device for the paint adhesion test provided by the utility model adopts the following technical scheme: a sample preparation device for the paint adhesion test, comprising:

[0007] Lower plate;

[0008] An upper plate, located above the lower plate;

[0009] The lower plate is provided with a step hole, the step hole includes a large hole section at the top and a small hole section at the bottom, the large hole section and the small hole section form an inner step facing upward, the large hole section is adapted for the glue coating part with a larger outer diameter in the lower drawing head to be inserted, the small hole section is adapted for the clamping part with a smaller outer diameter in the lower drawing head to penetrate, and the inner step is used to support the outer step formed by the clamping part and the glue coating part in the lower drawing head;

[0010] The upper plate is provided with a test hole which passes through from top to bottom, the test hole is vertically opposite to the step hole, and the test hole is adapted for the glue coating part of the upper drawing head to penetrate;

[0011] The sample preparation device also includes a weight located above the upper plate and pressing the upper drawing head.

[0012] As a further improvement, the step hole is a through hole, so that the clamping portion of the lower drawing head passes downward through the step hole.

[0013] As a further improvement, legs are installed at the bottom of the lower plate to suspend the lower plate.

[0014] As a further improvement, a blind hole for sleeved on the outside of the upper drawing head is provided at the bottom of the weight.

[0015] As a further improvement, a groove is provided on the top surface of the lower plate, which passes through the lower plate in the horizontal direction. The groove is a stepped groove, which includes a substrate placement groove located at the top and having a larger groove width, and a glue holding groove located at the bottom and having a smaller groove width. The stepped hole is provided at the bottom of the glue holding groove. The substrate placement groove is used for the substrate to pass through from one side of the lower plate, and the glue holding groove is used to hold glue or paint liquid. There is no need to scrape off the adhesive after the test, which saves the process.

[0016] As a further improvement, a plurality of springs are provided at the bottom of the substrate placement groove to elastically support the substrate upward and level the substrate.

[0017] As a further improvement, a spring placement hole for placing the spring is provided at the bottom of the substrate placement groove.

[0018] As a further improvement, the lower plate is provided with a plurality of grooves arranged in sequence, and a partition plate is formed between two adjacent substrate placement grooves, and the partition plate is used to position the substrate.

[0019] As a further improvement, the surface of the glue containing groove is provided with a non-stick coating.

[0020] The beneficial effects are:

[0021] Improved test efficiency: When preparing samples, the sample preparation device only needs to put the glue-coated lower pull-out head into the step hole with the clamping part at the bottom. The inner step of the step hole will support the outer step of the lower pull-out head upward, and then put the glue-coated upper pull-out head down and press it with weights. There is no need to fix the upper pull-out head and the upper plate, the lower pull-out head and the lower plate, no complicated pressing steps, no need to turn the direction, and no need to find a special place to put it. It can be placed on any plane, which is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0023] Figure 1 It is a structural schematic diagram of a pulling head in a sample preparation device for a paint adhesion test provided by the utility model;

[0024] Figure 2 A schematic structural diagram of an embodiment of a sample preparation device for a paint adhesion test provided by the utility model;

[0025] Figure 3 This is a three-dimensional diagram of a sample preparation device for a paint adhesion test;

[0026] Figure 4 A three-dimensional diagram of the upper plate of a sample preparation device for a paint adhesion test;

[0027] Figure 5 This is a three-dimensional view of the lower plate of the sample preparation device for the paint adhesion test.

[0028] Description of reference numerals:

[0029] 101. Glue coating part; 102. Clamping part; 103. Outer step; 104. Ring groove; 1. Upper plate; 11. Test hole; 12. Positioning hole; 2. Lower plate; 21. Step hole; 211. Large hole section; 212. Small hole section; 22. Partition plate; 23. Spring placement hole; 31. Lower pull-out head; 32. Upper pull-out head; 4. Base material; 5. Weight; 6. Spring; 7. Groove; 71. Base material placement groove; 72. Glue storage groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0031] Embodiment of the sample preparation device for paint adhesion detection test provided by the utility model:

[0032] like Figure 1-Figure 5 As shown, it includes a lower plate 2 and an upper plate 1, the upper plate 1 is located above the lower plate 2, the upper plate 1 and the lower plate 2 are connected by bolts, and both the upper plate 1 and the lower plate 2 are provided with positioning holes 12 for positioning, which are convenient for bolt fixing after positioning by pin shafts.

[0033] like Figure 2 and Figure 5 As shown, the lower plate 2 is provided with four step holes 21 for supporting and positioning the lower pull head 31 (the number of the step holes 21 can be adjusted according to the number of samples to be prepared). The structure of the lower pull head 31 is as shown in FIG. Figure 1 As shown, the lower drawing head 31 includes a glue coating part 101 and a clamping part 102, wherein the outer diameter of the glue coating part 101 is larger than the outer diameter of the clamping part 102, and the glue coating part 101 and the clamping part 102 form an outer step 103. When in use, the end face of the glue coating part 101 away from the clamping part 102 is coated with glue or paint; the clamping part 102 is used to be connected to a tensile testing machine to perform tensile testing on the sample. In order to facilitate the clamping of the clamping part 102 by the tensile testing machine, an annular groove 104 is provided at one end of the clamping part 102 close to the glue coating part 101.

[0034] The step hole 21 is thick at the top and thin at the bottom, and includes a large hole section 211 at the top and a small hole section 212 at the bottom. The inner diameter of the large hole section 211 is larger than the inner diameter of the small hole section 212, and the large hole section 211 and the small hole section 212 form an inner step facing upward. The step hole 21 is a through hole that passes through the lower plate 2 from top to bottom. The outer diameter of the glue coating part 101 of the lower drawing head 31 is the same as the inner diameter of the large hole section 211, and the lower drawing head 31 is positioned in the horizontal direction. The inner diameter of the small hole section 212 is larger than the outer diameter of the clamping part 102, so that the clamping part 102 can be inserted. When preparing the sample, the lower drawing head 31 is inserted into the step hole 21 from top to bottom, and the outer step 103 is supported on the inner step to support the lower drawing head 31. Since the step hole 21 is a through hole, the clamping part 102 can pass out downward, reducing the thickness of the lower plate 2. A support leg is installed at the bottom of the lower plate 2 to raise the lower plate 2 and reserve space for the clamping portion 102 to pass through.

[0035] like Figure 2 and Figure 3As shown, in this embodiment, the prepared sample also has a substrate 4. During the production, the substrate 4 is painted on both sides, and the two pulling heads are coated with adhesive, and the two pulling heads are bonded to the two sides of the substrate 4 respectively.

[0036] like Figure 5 As shown, a plurality of grooves 7 are provided on the top surface of the lower plate 2, the number of the grooves 7 is equal to the number of the step holes 21 and corresponds one to one, and the grooves 7 penetrate the lower plate 2 in the horizontal direction. Wherein, if the grooves are defined to be arranged in sequence along the left-right direction, the grooves 7 penetrate the lower plate 2 in the front-back direction. The grooves 7 here are stepped grooves, including a substrate placement groove 71 with a larger groove width at the top and a glue holding groove 72 with a smaller groove width at the bottom. The step hole 21 is provided at the bottom of the glue holding groove 72. The function of the glue holding groove 72 is to hold glue or paint liquid to prevent the glue or paint liquid from flowing through the gap between the lower plate 2 and the lower pull head 31 to the outside of the lower plate 2. The surface of the glue holding groove 72 is provided with a non-stick coating, such as a Teflon coating (i.e., a polytetrafluoroethylene coating), to prevent the glue or paint liquid from adhering to the glue holding groove 72. In other embodiments, the material of the non-stick coating can be changed.

[0037] The bottom of the substrate placement groove 71 is provided with a plurality of spring placement holes 23, in which springs 6 are installed, and the function of the springs 6 is to support the substrate 4 upward and level the substrate 4. The depths of the spring placement holes 23 are the same, because the substrate 4 is placed manually, and the size of the lower pull head 31 is small, which may cause the substrate 4 to tilt after being placed. After leveling, the spring 6 can ensure that the lower pull head 31 fits the substrate 4. A partition plate 22 is formed between two adjacent substrate placement grooves 71, and the function of the partition plate 22 is to position the substrate 4 and prevent the partition plate 22 from moving.

[0038] like Figure 2 and Figure 3 As shown, the upper plate 1 is provided with a test hole 11 corresponding to the step hole 21, and the diameter of the test hole 11 is equal to the diameter of the glue coating portion 101 in the upper drawing head 32. The test hole 11 passes through the upper plate 1 from top to bottom, wherein the structure of the upper drawing head 32 is the same as that of the lower drawing head 31, and will not be described in detail here. The upper drawing head 32 can directly pass through the test hole 11 from top to bottom.

[0039] like Figure 2 and Figure 3 As shown, the sample preparation device also includes a weight 5, which is used to press down the upper drawing head 32 and, together with the inner step on the lower plate 2, clamp the upper drawing head 32, the lower drawing head 31 and the base material 4. A blind hole is provided at the bottom of the weight 5, which can be sleeved on the outside of the upper drawing head 32.

[0040] When in use, apply adhesive to the glue coating part 101 of the lower drawing head 31, put the lower drawing head 31 into the step hole 21 with the clamping part 102 at the bottom, and make the outer step of the lower drawing head 31 supported on the inner step of the lower plate 2; paint the base material 4 on both sides, and put the base material 4 in from one side; apply adhesive to the glue coating part 101 of the upper drawing head 32, put the upper drawing head 32 into the test hole 11 with the clamping part 102 at the top, and press the weight 5 on the upper drawing head 32. After the sample preparation is completed, the upper plate 1 and the lower plate 2 are disassembled, and the sample formed by the upper drawing head 32, the base material 4, and the lower drawing head 31 is taken out.

[0041] In other embodiments, the spring placement hole is eliminated and the spring is directly fixed to the bottom of the substrate placement groove.

[0042] Although this specification has shown and described a plurality of embodiments of the utility model, it is obvious to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will think of many changes, modifications and alternatives without departing from the idea and spirit of the utility model. It should be understood that in the process of practicing the utility model, various alternatives to the embodiments of the utility model described herein may be adopted. The attached claims are intended to define the scope of protection of the utility model, and therefore cover the modular composition, equivalent or alternatives within the scope of protection of these claims.

Claims

1. A sample preparation device for a paint adhesion test, comprising: Lower plate (2); An upper plate (1) located above the lower plate (2); The invention is characterized in that the lower plate (2) is provided with a step hole (21), the step hole (21) comprises a large hole section (211) at the top and a small hole section (212) at the bottom, the large hole section (211) and the small hole section (212) form an inner step facing upwards, the large hole section (211) is adapted for the rubber coating part (101) with a larger outer diameter in the lower drawing head (31) to fit in, the small hole section (212) is adapted for the clamping part (102) with a smaller outer diameter in the lower drawing head (31) to penetrate, and the inner step is used to support the outer step (103) formed by the clamping part (102) and the rubber coating part (101) in the lower drawing head (31); The upper plate (1) is provided with a test hole (11) which passes through from top to bottom. The test hole (11) is vertically opposite to the step hole (21). The test hole (11) is adapted for the glue coating portion (101) of the upper drawing head (32) to penetrate. The sample preparation device also includes a weight (5) located above the upper plate (1) and pressing the upper drawing head (32).

2. The sample preparation device for the paint adhesion test according to claim 1, characterized in that: The step hole (21) is a through hole, so that the clamping portion (102) of the lower drawing head (31) passes downward through the step hole (21).

3. The sample preparation device for the paint adhesion test according to claim 2, characterized in that: A support leg is installed at the bottom of the lower plate (2) to lift the lower plate (2).

4. The sample preparation device for the paint adhesion test according to claim 1, characterized in that: The bottom of the weight (5) is provided with a blind hole for being sleeved on the outside of the upper drawing head (32).

5. The sample preparation device for the paint adhesion test according to any one of claims 1 to 4, characterized in that: A groove (7) is provided on the top surface of the lower plate (2) and passes through the lower plate (2) in a horizontal direction. The groove (7) is a stepped groove. The groove (7) includes a substrate placement groove (71) located at the top and having a larger groove width, and also includes a glue containing groove (72) located at the bottom and having a smaller groove width. The stepped hole (21) is provided at the groove bottom of the glue containing groove (72). The substrate placement groove (71) is used for the substrate (4) to pass through from one side of the lower plate (2), and the glue containing groove (72) is used for containing glue liquid or paint liquid.

6. The sample preparation device for the paint adhesion test according to claim 5, characterized in that: A plurality of springs (6) are provided at the bottom of the substrate placement groove (71) to elastically support the substrate (4) upward and to level the substrate (4).

7. The sample preparation device for the paint adhesion test according to claim 6, characterized in that: A spring placement hole (23) for placing the spring (6) is provided at the bottom of the bottom material placement groove (71).

8. The sample preparation device for the paint adhesion test according to claim 5, characterized in that: The lower plate (2) is provided with a plurality of grooves (7) arranged in sequence, and a partition plate (22) is formed between two adjacent base material placement grooves (71), and the partition plate (22) is used to position the base material (4).

9. The sample preparation device for the paint adhesion test according to claim 5, characterized in that: The surface of the glue containing groove (72) is provided with a non-stick coating.

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