CN221100448U - Auxiliary device for testing adhesive force by pulling-open method - Google Patents

Abstract

The utility model discloses an auxiliary device for testing adhesive force by a pulling-open method, which comprises a rectangular base and an upper panel, wherein a first test column mounting hole is formed in the upper panel, and a second test column mounting hole corresponding to the first test column mounting hole is formed in the base; the base is also provided with two support assemblies for supporting the test piece in advance, the two support assemblies are respectively positioned on two opposite sides of the upper panel, and the support assemblies are provided with permanent magnets for carrying out auxiliary positioning on the test piece; the upper panel is also provided with a pressing strip which has two states, the pressing strip is not pressed on the test piece in the first state, the lower surface of the test piece is not contacted with a second test column arranged in the second test column mounting hole, the pressing strip is pressed on the test piece in the second state, and the lower surface of the test piece is pressed on the second test column. The utility model can ensure that the center lines of the upper test column and the lower test column coincide with the center line of the test piece, avoid dislocation caused by the existence of the surface tension of the liquid adhesive, and improve the accuracy of test results.

Description

Auxiliary device for testing adhesive force by pulling-open method

Technical Field

The utility model relates to the technical field of engineering detection, in particular to an auxiliary device for testing adhesive force by a pulling-out method.

Background

Pull-apart adhesion testing is one of the common methods for testing adhesion of coatings. The method is to apply the coating on the substrate to form a rectangle with proper area, then tear it under a certain stress, and the method can measure the adhesion between the coating and the substrate.

In the prior art, two test columns with annular grooves at the periphery are respectively bonded by using strong adhesive on two sides of a test piece (a substrate with one side coated with the coating), so that the center lines of the two test columns are required to be ensured to be positioned on the same straight line as much as possible, and the straight line coincides with the center line of the substrate in order to ensure test precision.

In order to achieve the above effect, a scheme similar to that disclosed in CN210401176U is generally used in the prior art, and in practical use, although the upper and lower test columns can be ensured to be accurately centered, it is difficult to ensure that the center line of the test piece coincides with the center line of the test column. This is mainly because when the test piece is contacted with one end of the test column coated with the liquid glue, dislocation is easy to occur due to the existence of the surface tension of the liquid glue. The dislocation can also lead to the bonding surface being larger than the area of the test piece, so that the test result is inaccurate.

In summary, how to ensure that the center line of the test piece coincides with the center line of the test column is one of the important problems to be solved in the art.

Disclosure of utility model

The utility model aims to provide an auxiliary device for testing the adhesive force by a pulling-out method, which solves the defects in the prior art, is beneficial to ensuring that the center line of a test piece coincides with the center line of a test column and improving the accuracy of a test result.

The utility model provides an auxiliary device for testing adhesive force by a pulling-out method, which comprises a rectangular base and an upper panel, wherein the upper panel is also a rectangular plate, four support columns are vertically arranged on the base and are respectively positioned at the top corners of the base, positioning columns are arranged on two support columns on one diagonal, and threaded rods are arranged on two support columns on the other diagonal; the upper panel is provided with a positioning hole matched with the positioning column and the threaded rod, the upper panel is provided with a first test column mounting hole, and the base is provided with a second test column mounting hole corresponding to the first test column mounting hole;

the base is also provided with two supporting components for supporting the test piece in advance, the two supporting components are respectively positioned on two opposite sides of the upper panel, and the supporting components are provided with permanent magnets for carrying out auxiliary positioning on the test piece; the upper panel is also provided with a pressing strip, the pressing strip is in two states, the pressing strip is not pressed on the test piece in the first state, the lower surface of the test piece is not contacted with a second test column arranged in the second test column mounting hole, the pressing strip is pressed on the test piece in the second state, and the lower surface of the test piece is pressed on the second test column.

Preferably, the support assembly comprises a first support plate and a second support plate, the first support plate and the second support plate are all arranged in parallel with the base, the first support plate is located above the second support plate, a guide post is fixedly arranged below the first support plate, a guide hole matched with the second support plate is formed in the position, opposite to the guide post, of the second support plate, an elastic assembly is further sleeved on the guide post, one end of the elastic assembly abuts against the first support plate, and the other end of the elastic assembly abuts against the second support plate.

Preferably, a first graduated scale and a second graduated scale are arranged on the first supporting plate, the first graduated scale is arranged along the length direction of the first supporting plate, and the second graduated scale is arranged along the width direction of the first supporting plate.

Preferably, the permanent magnets are plural, and the plural permanent magnets are arranged along the length direction of the first support plate.

Preferably, a limiting part is arranged at one end of the guide post penetrating through the guide hole.

Preferably, the number of the guide posts is two, and the two guide posts are respectively arranged at two ends of the first supporting plate.

Preferably, when the pressing strip is in the first state, the distance between the test piece and the second test column is 1-2 cm.

Preferably, the second backup pad pass through a lifting unit with the base links to each other, lifting unit includes screw rod, nut and guide cylinder, the lower extreme of screw rod with the base is fixed to be linked to each other, the nut with screw rod looks adaptation, the upper end of nut with the second backup pad rotates to be connected, the guide cylinder is two, two the guide cylinder is located respectively the both sides of screw rod, the upper end of guide cylinder with the second backup pad is fixed, the guide cylinder slip cap sets up on a guide bar, the lower extreme of guide bar with base fixed connection.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the first test column mounting holes are formed in the upper panel, the second test column mounting holes which are in one-to-one correspondence with the first test column mounting holes are formed in the base, the support assembly capable of supporting the test piece in advance is arranged on the base, and the permanent magnet is arranged on the support assembly to assist in positioning the test piece, so that the upper test column and the lower test column can be accurately centered, the center line of the test piece is ensured to coincide with the center line of the test column, and the dislocation caused by the existence of the surface tension of the liquid adhesive at the end part of the second test column when the test piece is contacted with the second test column is avoided, thereby improving the accuracy of test results.

2. According to the utility model, the first graduated scale and the second graduated scale are arranged on the first supporting plate, so that the test piece can be conveniently centered when being placed on the first supporting plate, and the center line of the test piece is overlapped with the center line of the second test column arranged on the base.

3. According to the utility model, the lifting assembly is arranged between the second supporting plate and the base, so that the test pieces with different thicknesses can be slightly adjusted up and down, and the lower surface of the test piece is not contacted with the second test column arranged in the second test column mounting hole when the pressing bar is in the first state after the test pieces with different thicknesses are placed on the first supporting plate, so that the application range of the utility model is improved, and the test pieces with different thicknesses can be molded and bonded.

Drawings

FIG. 1 is a schematic view of a molding according to the present utility model in a second state;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a schematic illustration of the positions of the test piece and the second test post without the upper panel installed;

Fig. 5 is a front view of fig. 4:

FIG. 6 is a schematic view of the mounting structure of the upper panel and the bead:

fig. 7 is a schematic view of the positions of the first scale, the second scale and the first support plate.

Reference numerals illustrate:

The device comprises a base, a 2-upper panel, a 3-supporting column, a 4-positioning column, a 201-positioning hole, a 202-first test column mounting hole, a 101-second test column mounting hole, a 5-threaded rod, a 6-permanent magnet, a 7-layering, an 8-second test column, a 9-first supporting plate, a 10-second supporting plate, a 11-guiding column, a 12-elastic component, a 13-first scale, a 14-second scale, a 15-limiting part, a 16-threaded rod, a 17-test piece, a 18-nut, a 19-guiding cylinder, a 20-guiding rod, a 21-first test column and a 22-butterfly nut.

Detailed Description

The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In a first embodiment of the present utility model:

Referring to fig. 1-6, the embodiment discloses an auxiliary device for testing adhesion force by a pulling-open method, which comprises a rectangular base 1 and an upper panel 2, wherein the thicknesses of the base 1 and the upper panel 2 can be set according to the needs, and the thicknesses are taken as an example. Four support columns 3 are vertically arranged on the base 1, and the four support columns 3 are respectively located at the top angles of the base 1, so that the whole device is more stable, and the upper panel 2 is located right above the base 1 when being installed on the support columns 3. Two support columns 3 on one diagonal are provided with positioning columns 4, two support columns 3 on the other diagonal are provided with threaded rods 5, and in specific implementation, the threaded rods 5 can be provided with adaptive wing nuts 22, so that downward pressure can be applied to the upper panel 2 by rotating the wing nuts 22, and the upper panel 2 is fixed. The upper panel 2 is provided with a positioning hole 201 matched with the positioning column 4 and the threaded rod 5, the upper panel 2 is provided with a first test column mounting hole 202, and the base 1 is provided with a second test column mounting hole 101 corresponding to the first test column mounting hole 202, so that when the upper panel 2 is mounted on the support column 3, the center line of the first test column mounting hole 202 and the center line of the corresponding second test column mounting hole 101 can be overlapped; during the use, install the top panel 2 on support column 3 through the cooperation of locating hole 201 with reference column 4, threaded rod 5, and be located base 1 directly over, make first test column mounting hole 202, with the central line coincidence of corresponding second test column mounting hole 101, so can effectively guarantee to install when the first test column 21 in first test column mounting hole 202 bonds on test piece 17 can with install the central line coincidence when the second test column 8 of corresponding second test column mounting hole 101 bonds on test piece 17.

In order to further improve the accuracy of the test result, in this embodiment, the base 1 is provided with two support assemblies for supporting the test piece 17 in advance, the two support assemblies are respectively located at two opposite sides of the upper panel 2, and the support assemblies are provided with permanent magnets 6 for auxiliary positioning of the test piece 17; the upper panel 2 is also provided with a pressing strip 7, the pressing strip 7 has two states, the first state is that the pressing strip 7 is not pressed on the test piece 17, the lower surface of the test piece 17 is not contacted with the second test column 8 arranged in the second test column mounting hole 101, the second state is that the pressing strip 7 is pressed on the test piece 17, and the lower surface of the test piece 17 is pressed on the second test column 8. When the pressing bar 7 is in the first state, the distance between the test piece 17 and the second test column is 1-2 cm. When the upper panel 2 is mounted on the support column 3, the pressing bar 7 is positioned below and is contacted with the test piece 17, and the butterfly nut 22 is screwed on the butterfly nut 22 mounted on the two threaded rods 5 at the same time, so that the butterfly nut 22 pushes the upper panel 2 to move downwards until the pressing bar 7 is pressed on the test piece 17, and the lower surface of the test piece 17 is pressed on the second test column 8, namely until the pressing bar 7 is in the second state. The test pieces 17 here are rectangular block test pieces.

The use process is as follows: when in use, the second test column 8 coated with the liquid glue is firstly arranged in the second test column mounting hole 101, one end of the glue is upwards, then the test piece 17 is placed on the supporting component, the position is adjusted to enable the center point of the test piece 17 to be located on the center line of the second test column 8 (or the center line of the test piece 17 is overlapped with the center line of the second test column 8), then the upper panel 2 is installed on the supporting column 3 through the matching of the positioning hole 201, the positioning column 4 and the threaded rod 5, at the moment, the pressing strip 7 of the upper panel 2 is pressed on the test piece 17, two wing nuts 22 are then mounted to the two threaded rods 5, respectively, and the two wing nuts 22 are screwed simultaneously, the lower upper panel 2 is pushed to move downwards by the butterfly nut 22, the test piece 17 is pushed to move towards the second test column 8 by the pressing bar 7 until the pressing bar 7 is pressed on the test piece 17, the lower surface of the test piece 17 is pressed on the second test column 8, due to the action of the permanent magnet 6, when the test piece 17 is contacted with the second test column 8, the surface tension of the liquid glue does not exist between the test piece 17 and the second test column 8, and the dislocation occurs, so that the center point of the test piece 17 is ensured to be on the center line of the second test column 8, and finally the first test column 21 coated with the glue solution is installed in the first test column installation hole 202 corresponding to the second test column 8, and one end coated with the glue solution is abutted against the upper surface of the test piece 17, since the first test column mounting hole 202 coincides with the center line of the corresponding second test column mounting hole 101, when the first test column 21 abuts against the test piece 17, it can be ensured that the center line of the first test column 21 and the center line of the second test column 8 are coincident with the center line of the test piece 17 (or that the center of the test piece 17 is located on the center lines of the first test column and the second test column). When the test piece 17 is tightly adhered with the first test column 21 and the second test column 8 after standing for enough time, the butterfly nut 22 is reversely rotated to remove the upper panel 2, and the test piece 17 adhered with the first test column 21 and the second test column 8 is taken down to finish the preparation.

Preferably, the support assembly comprises a first support plate 9 and a second support plate 10, the first support plate 9 and the second support plate 10 are all arranged in parallel with the base 1, the first support plate 9 is located above the second support plate 10, a guide column 11 is fixedly arranged below the first support plate 9, a guide hole matched with the second support plate 10 is formed in the position, opposite to the guide column 11, of the second support plate 10, an elastic assembly 12 is further sleeved on the guide column 11, one end of the elastic assembly 12 abuts against the first support plate 9, the other end of the elastic assembly abuts against the second support plate 10, the permanent magnets 6 are multiple, the permanent magnets 6 are arranged along the length direction of the first support plate 9, in particular implementation, the permanent magnets can be arranged according to the number of the second test column mounting holes 101, two rows of the same first support plate 9 can be arranged side by side, and the two rows of the guide columns are respectively arranged close to one opposite edge of the first support plate 9, so that a test piece 17 with a non-passing length can be positioned. The elastic component 12 here may be selected from springs, rubber, etc. The guiding column 11 can play a role in limiting and guiding, so that the first supporting plate 9 is effectively prevented from moving in the horizontal direction relative to the second supporting plate 10, the first supporting plate 9 can only move up and down relative to the second supporting plate 10, and the elastic component 12 can ensure that when the test piece 17 is placed on the first supporting plate 9 and the pressing strip 7 on the upper panel 2 is mounted on the supporting column 3 but is not pressed on the test piece 17, the lower surface of the test piece 17 is not contacted with the second test column 8 mounted in the second test column mounting hole 101.

In a second embodiment of the present utility model:

As a preferred manner, this embodiment is further improved on the basis of the first embodiment, and the same parts as those of the first embodiment are not described in detail, and only the differences will be described below.

In order to more conveniently and rapidly coincide the center line of the test piece 17 with the center line of the second test column 8 installed in the second test column installation hole 101, a first scale 13 and a second scale 14 may be provided on the first support plate 9, the first scale 13 being provided along the length direction of the first support plate 9, and the second scale 14 being provided along the width direction of the first support plate 9, as shown with reference to fig. 7.

In order to prevent the guide post 11 from sliding out of the guide hole in the second support plate 10, a limiting portion 15 may be provided at one end of the guide post 11 passing through the guide hole.

In order to make the first support plate 9 more stable when moving up and down, two guide posts 11 may be provided, and two guide posts 11 are provided at both ends of the first support plate 9, respectively.

Referring to fig. 5, in order to adapt to test pieces 17 with different thicknesses, the second support plate 10 may be connected to the base 1 through a lifting assembly, the lifting assembly includes a screw 16, a nut 18 and guide cylinders 19, the lower end of the screw 16 is fixedly connected to the base 1, the nut 18 is matched with the screw 16, the upper end of the nut 18 is rotatably connected to the second support plate 10, the number of the guide cylinders 19 is two, the two guide cylinders 19 are respectively located at two sides of the screw 16, the upper end of the guide cylinder 19 is fixed to the second support plate 10, the guide cylinder 19 is slidably sleeved on a guide rod 20, the lower end of the guide rod 20 is fixedly connected to the base 1, and the guide cylinder 19 is matched with the guide rod 20, so that the whole support assembly can only move up and down without rotation when the nut 18 is rotated. Through the cooperation of screw rod 16 and nut 18, can finely tune the height of supporting component through rotating nut 18, guarantee that after the test piece 17 of different thickness was placed on the first backup pad, and when layering 7 was in the first state, the lower surface of test piece 17 did not contact with the second test post 8 of installing in second test post mounting hole 101 to improve the commonality of the application, can carry out shaping bonding preparation to test piece 17 of different thickness.

The foregoing detailed description of the preferred embodiments of the present utility model will be presented in terms of a detailed description of the preferred embodiments of the utility model, but the utility model is not limited to the details of the preferred embodiments of the utility model, and is intended to cover all modifications and equivalent arrangements included within the spirit of the present utility model.

Claims (8)

1. The pull-out method adhesion test auxiliary device comprises a rectangular base (1) and an upper panel (2), wherein four support columns (3) are vertically arranged on the base (1), the four support columns (3) are respectively positioned at the top corners of the base (1), two support columns (3) on one diagonal line are provided with positioning columns (4), and two support columns (3) on the other diagonal line are provided with threaded rods (5); the upper panel (2) is provided with a positioning hole (201) matched with the positioning column (4) and the threaded rod (5), the upper panel (2) is provided with a first test column mounting hole (202), and the base (1) is provided with a second test column mounting hole (101) corresponding to the first test column mounting hole (202);

The method is characterized in that: the base (1) is also provided with two supporting components for supporting the test piece (17) in advance, the two supporting components are respectively positioned on two opposite sides of the upper panel (2), and the supporting components are provided with permanent magnets (6) for auxiliary positioning of the test piece (17); the upper panel (2) is further provided with a pressing strip (7), the pressing strip (7) is in two states, the first state is that the pressing strip (7) is not pressed on the test piece (17), the lower surface of the test piece (17) is not contacted with a second test column (8) installed in the second test column installation hole (101), the second state is that the pressing strip (7) is pressed on the test piece (17), and the lower surface of the test piece (17) is pressed on the second test column (8).

2. The pull-apart adhesion test aid of claim 1, wherein: the support assembly comprises a first support plate (9) and a second support plate (10), wherein the first support plate (9) and the second support plate (10) are arranged in parallel with the base (1), the first support plate (9) is located above the second support plate (10), a guide post (11) is fixedly arranged below the first support plate (9), a guide hole matched with the guide post is formed in the position, opposite to the guide post (11), of the second support plate (10), an elastic assembly (12) is sleeved on the guide post (11), one end of the elastic assembly (12) abuts against the first support plate (9), and the other end of the elastic assembly abuts against the second support plate (10).

3. The pull-apart adhesion test aid of claim 2, wherein: be equipped with first scale (13) and second scale (14) on first backup pad (9), first scale (13) are followed the length direction setting of first backup pad (9), second scale (14) are followed the width direction setting of first backup pad (9).

4. The pull-apart adhesion test aid of claim 2, wherein: the number of the permanent magnets (6) is plural, and the plural permanent magnets (6) are arranged along the length direction of the first support plate (9).

5. The pull-apart adhesion test aid of claim 2, wherein: one end of the guide column (11) penetrating through the guide hole is provided with a limiting part (15).

6. The pull-apart adhesion test aid of claim 5, wherein: the number of the guide posts (11) is two, and the two guide posts (11) are respectively arranged at two ends of the first supporting plate (9).

7. The pull-apart adhesion test aid of claim 2, wherein: when the pressing bar (7) is in the first state, the distance between the test piece (17) and the second test column is 1-2 cm.

8. The pull-apart adhesion test aid of claim 2, wherein: the second support plate (10) is connected with the base (1) through a lifting assembly, the lifting assembly comprises a screw rod (16), a nut (18) and a guide cylinder (19), the lower end of the screw rod (16) is fixedly connected with the base (1), the nut (18) is matched with the screw rod (16), the upper end of the nut (18) is rotatably connected with the second support plate (10), the number of the guide cylinders (19) is two, the two guide cylinders (19) are respectively located on two sides of the screw rod (16), the upper ends of the guide cylinders (19) are fixed with the second support plate (10), a sliding sleeve of the guide cylinders (19) is arranged on a guide rod (20), and the lower end of the guide rod (20) is fixedly connected with the base (1).