A coating bonding strength testing device

Abstract

A coating bonding strength testing device includes a support table, the support table includes a top plate and support legs, the top surface of the top plate is symmetrically provided with two limit grooves, a limit mechanism is provided above the limit grooves, the limit mechanism includes an extrusion sleeve, the extrusion sleeve is in the shape of a truncated cone, the outer wall of the extrusion sleeve is abutted against two symmetrically distributed L-shaped connecting rods, one end of the L-shaped connecting rod away from the notch is rotatably connected to a rotating base, the other end of the rotating base is fixedly connected to a clamping block, the corner of the L-shaped connecting rod is rotatably connected to a connecting column, and the inner side wall of the clamping block is abutted against the outer side wall of the substrate. The beneficial effect of the present invention is that the sliding of the sliding column allows its end face to be bonded to the strong adhesive of the end face of the substrate, so that the substrate material will not deviate when the coating is glued, thereby improving the accuracy of the bonding strength test.

Description

Technical Field

[0001] The invention relates to a testing device, in particular to a coating bonding strength testing device. Background Art

[0002] The bonding strength of coatings includes the cohesive strength between coating particles (the bonding strength of the coating itself) and the bonding strength (adhesion) between the coating and the substrate material. Usually, the bonding strength itself is greater than the adhesion, and only the latter is tested in the coating strength test. Therefore, the bonding strength of the coating can be defined as the ultimate ability of the coating per unit area to withstand normal tensile stress. It is a very important indicator of coating performance. If the bonding strength is too small, it will cause the coating life to be reduced and early failure to occur. In severe cases, it will cause local peeling and flaking of the coating and make it unusable. The partial coating bonding strength test device selects a portion of the substrate with coatings on both ends, adheres a strong adhesive to one side of the coating, and then adheres one end of the tensile device to the strong adhesive. The bonding strength between the coating and the substrate material is tested by the tensile device. However, the substrate material will deviate when the coating is adhered, and cannot maintain a good degree of centering, which affects the accuracy of the bonding strength test. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a coating bonding strength testing device.

[0004] The technical solution of the present invention is a coating bonding strength testing device, comprising a supporting table, the supporting table comprising a top plate and supporting legs, the top surface of the top plate is symmetrically provided with two limiting grooves, both ends of the inner sides of the limiting grooves are fixedly connected to limiting blocks, a connecting shaft is fixedly connected between the limiting blocks, and a limiting mechanism is provided above the limiting groove, the limiting mechanism comprises an extrusion sleeve, the extrusion sleeve is a truncated cone shape, a circular hole is provided at the bottom of one end of the extrusion sleeve, the inner side wall of the circular hole is slidably connected to the outer side wall of the connecting shaft, a sliding column is slidably connected to the inner side wall of the extrusion sleeve, and the outer side wall of the extrusion sleeve is abutted against two symmetrically distributed L-shaped connecting rods, a notch is provided at one end of the L-shaped connecting rod close to the extrusion sleeve, a roller is rotatably connected to the inner side wall of the notch, and the end of the L-shaped connecting rod away from the notch is rotatably connected to a rotating base, and the other end of the rotating base is fixedly connected to a clamping block, and a connecting column is rotatably connected at the corner of the L-shaped connecting rod, the bottom surface of the connecting column is fixedly connected to the top surface of the top plate, and the inner side wall of the clamping block is abutted against the outer side wall of the substrate.

[0005] Preferably, two symmetrically distributed hand rings are fixedly connected to the outer side wall of the extrusion sleeve.

[0006] Preferably, a pull ring is fixedly connected to one end of the sliding column away from the base body.

[0007] Preferably, a protective shell is fixedly connected to the top of the limiting mechanism.

[0008] The beneficial effect of the present invention is that the extrusion sleeve slides on the outer side wall of the connecting shaft, the roller rolls on the outer side wall of the extrusion sleeve, and the clamping block clamps the substrate during the rolling of the roller on the outer side wall of the extrusion sleeve. The sliding of the sliding column makes its end face bonded with the strong adhesive on the end face of the substrate, so that the substrate material will not deviate when the coating is glued, thereby improving the accuracy of the bonding strength test. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the present invention;

[0010] Figure 2 It is a schematic diagram of the top structure of the support table in the present invention;

[0011] Figure 3 The present invention Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0012] Figure 4 It is a schematic diagram of the positional relationship between the top plate and the limiting mechanism in the present invention;

[0013] Figure 5 A schematic diagram of the structure of the limiting mechanism in the present invention;

[0014] Figure 6 It is a schematic diagram of the matrix structure in the present invention.

[0015] In the figure: 100. support table; 101. top plate; 102. support leg; 103. protective shell; 1011. limiting groove; 1012. limiting block; 1013. connecting shaft; 200. limiting mechanism; 201. extrusion sleeve; 2011. hand ring; 202. sliding column; 2021. pull ring; 203. L-shaped connecting rod; 2031. roller; 2032. clamping block; 2033. rotating base; 204. connecting column; 300. base; 301. coating; 302. strong adhesive. DETAILED DESCRIPTION

[0016] As shown in the figure, a coating bonding strength testing device includes a support table 100, and the support table 100 includes a top plate 101 and support legs 102. Two limiting grooves 1011 are symmetrically arranged on the top surface of the top plate 101. Both ends of the inner side of the limiting grooves 1011 are fixedly connected to limiting blocks 1012. A connecting shaft 1013 is fixedly connected between the limiting blocks 1012. A limiting mechanism 200 is arranged above the limiting grooves 1011. The limiting mechanism 200 includes an extrusion sleeve 201. The extrusion sleeve 201 is in the shape of a truncated cone. A circular hole is opened at the bottom of one end of the extrusion sleeve 201. The inner side wall of the circular hole is slidably connected to the outer side wall of the connecting shaft 1013. The extrusion sleeve 201 is provided with a plurality of holes. The inner wall of 201 is slidably connected with a sliding column 202, and the outer wall of the extrusion sleeve 201 is abutted against two symmetrically distributed L-shaped connecting rods 203. A notch is opened at one end of the L-shaped connecting rod 203 close to the extrusion sleeve 201, and the inner wall of the notch is rotatably connected with a roller 2031. The end of the L-shaped connecting rod 203 away from the notch is rotatably connected with a rotating base 2033, and the other end of the rotating base 2033 is fixedly connected with a clamping block 2032. The corner of the L-shaped connecting rod 203 is rotatably connected with a connecting column 204, the bottom surface of the connecting column 204 is fixedly connected to the top surface of the top plate 101, and the inner wall of the clamping block 2032 is abutted against the outer wall of the base 300.

[0017] The outer wall of the extrusion sleeve 201 is fixedly connected to two symmetrically distributed bracelets 2011, so that when the roller 2031 rolls on the outer wall of the extrusion sleeve 201, the clamping block 2032 at the end of the L-shaped connecting rod 203 clamps the base 300, and the bracelet 2011 can conveniently push the extrusion sleeve 201; the end of the sliding column 202 away from the base 300 is fixedly connected to the pull ring 2021, and the pull ring 2021 can conveniently slide the sliding column 202, and the top of the two limiting mechanisms 200 is fixedly connected to the protective shell 103 to prevent the coating 301 from being damaged.

[0018] Working principle: When in use, both ends of the base 300 are coated with the coating 301, and then the strong adhesive 302 is coated on the outside of the coating 301, and the wristband 2011 is pushed to make the extrusion sleeve 201 slide on the outer wall of the connecting shaft 1013 toward the base 300. At this time, the roller 2031 rolls on the outer wall of the extrusion sleeve 201. Since the outer shape of the extrusion sleeve 201 is a truncated cone, the roller 2031 rolls on the outer wall of the extrusion sleeve 201, and at the same time, the inner wall of the two clamping blocks 2032 at the end of the L-shaped connecting rod 203 is aligned with the base. The outer wall of 300 is abutted to clamp the base 300, so that the sliding column 202 and the base 300 are in a straight line, and then the pull ring 2021 is pushed to move the sliding column 202 toward the base 300, so that the end of the sliding column 202 is bonded with the strong adhesive 302 on the end face of the base 300, so that the base 300 material will not deviate when the coating 301 is glued, and a good neutrality is maintained, and then the pull ring 2021 is connected to the tension equipment to detect the bonding strength of the coating 301 of the base 300, thereby improving the accuracy of the bonding strength test.

[0019] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A coating bonding strength testing device, comprising a support table, the support table comprising a top plate and support legs, characterized in that: The top surface of the top plate is symmetrically provided with two limit grooves, and both ends of the inner ends of the limit grooves are fixedly connected to the limit blocks, and a connecting shaft is fixedly connected between the limit blocks, and a limit mechanism is provided above the limit groove, and the limit mechanism includes an extrusion sleeve, and the extrusion sleeve is in a truncated cone shape, and a circular hole is provided at the bottom of one end of the extrusion sleeve, and the inner side wall of the circular hole is slidably connected to the outer side wall of the connecting shaft. The inner side wall of the extrusion sleeve is slidably connected to a sliding column, and the outer side wall of the extrusion sleeve is abutted against two symmetrically distributed L-shaped connecting rods, and the L-shaped connecting rod is provided with a notch at one end close to the extrusion sleeve, and the inner side wall of the notch is rotatably connected to a roller, and the end of the L-shaped connecting rod away from the notch is rotatably connected to a rotating base, and the other end of the rotating base is fixedly connected to a clamping block, and the corner of the L-shaped connecting rod is rotatably connected to a connecting column, and the bottom surface of the connecting column is fixedly connected to the top surface of the top plate, and the inner side wall of the clamping block is abutted against the outer side wall of the base.

2. A coating bonding strength testing device as claimed in claim 1, characterized in that: The outer side wall of the extrusion sleeve is fixedly connected with two symmetrically distributed hand rings.

3. A coating bonding strength testing device as claimed in claim 2, characterized in that: One end of the sliding column away from the base body is fixedly connected with a pull ring.

4. A coating bonding strength testing device as claimed in claim 3, characterized in that: The top of the limiting mechanism is fixedly connected with a protective shell.

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