An adhesive bonding strength detection apparatus

Abstract

This utility model relates to the field of adhesive bonding strength testing technology, and more particularly to an adhesive bonding strength testing device that solves the problem of efficiency issues caused by the need for repositioning during multiple tests in existing technologies. The adhesive bonding strength testing device includes a test platform. Two load measuring instruments are mounted on the top of the test platform via a moving mechanism. Hooks are fixedly connected to the measuring shafts of the two load measuring instruments. A main shaft is located at one end of each hook. A pulling block is fixedly connected to the surface of the main shaft. A limiting block is located on one side of the pulling block via an installation mechanism. A test block is slidably connected between the limiting block and the pulling block. This utility model eliminates the need for repositioning, improving the efficiency of tensile testing of the test block. It also eliminates the need to change equipment and locations for peel strength testing, thereby enhancing testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of adhesive bonding strength testing technology, and in particular to an adhesive bonding strength testing device. Background Technology

[0002] The adhesive strength of an adhesive is a core indicator for evaluating its bonding performance, directly reflecting its ability to firmly bond two or more substrates. It is influenced by various factors, including the adhesive's inherent properties, the characteristics of the substrates, the bonding process, and the environment in which it is used, and is of great significance in fields such as industrial production, construction, and automobile manufacturing.

[0003] Chinese Patent Publication No. CN222336964U discloses an adhesive bonding strength testing device, comprising: a base, a first mounting plate fixedly mounted on one end of the base, a first hydraulic cylinder fixedly mounted on the upper part of the first mounting plate, a first tension sensor fixedly connected to the telescopic end of the first hydraulic cylinder, and a first test plate fixedly connected to one end of the first tension sensor; a second mounting plate fixedly mounted on the other end of the base, a second hydraulic cylinder fixedly connected to one side of the second mounting plate, a second tension sensor fixedly connected to the telescopic end of the second hydraulic cylinder, and a second test plate fixedly connected to one end of the second tension sensor; and a test platform fixedly mounted on the top of the base, with a temperature control component mounted on the test platform. This application enables the testing of the vertical and horizontal bonding strength of adhesives, and the surface of the test platform can be cooled by the temperature control component before the adhesive strength test, accelerating the curing speed of the adhesive and improving the testing efficiency.

[0004] For existing adhesive bonding strength testing equipment, in actual use, it is necessary to change equipment or location when conducting peel or tensile tests, which is inefficient. Furthermore, manual repositioning is required for multiple tests, which is troublesome and affects testing efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an adhesive bonding strength testing device that solves the problem of efficiency issues caused by the need for repositioning during multiple tests in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adhesive bonding strength testing device includes a test platform. Two load measuring instruments are mounted on the top of the test platform via a moving mechanism. The measuring shafts of the two load measuring instruments are fixedly connected to hooks. One end of the hook is provided with a main shaft. A pulling block is fixedly connected to the surface of the main shaft. A limiting block is provided on one side of the pulling block via an installation mechanism. A test block is slidably connected between the limiting block and the pulling block.

[0008] Preferably, the moving mechanism includes two moving slots opened on the top of the test platform, a motor is fixedly connected to the side of the test platform, a moving block is slidably connected inside the moving slot, and the load measuring instrument is fixedly connected to the top of the adjacent moving block.

[0009] Preferably, a rack and pinion is fixedly connected to the bottom of the moving block, and a gear is driven to the output shaft of the motor.

[0010] Preferably, the installation mechanism includes two spacer blocks located between the pull block and the limit block, with an insertion rod fixedly connected to the top and bottom of each spacer block, and the insertion rod passing through the interior of the pull block and the limit block respectively.

[0011] Preferably, the insert rod has a T-shaped screw threaded inside, and the top of the pull block has a triangular force equalizing block.

[0012] Preferably, a mounting plate is fitted onto the surface of the load measuring instrument, a force plate is fixedly connected to the surface of the mounting plate by bolts, four support rods are fixedly connected to the surface of the force plate, and compression blocks are fixedly connected between the four support rods.

[0013] This utility model has the following beneficial effects:

[0014] When testing the adhesive bonding strength, two test blocks can be easily inserted into the space between the pull block and the limiting block, and then bonded together with adhesive. During the test, two load testers pull the blocks together from both sides without the need for positioning; they can be pulled apart directly. The bonding strength can be calculated from the data on the two load testers, improving the efficiency of tensile testing. Furthermore, when peel strength testing is required, the main shaft can be removed from the hook, and then the extrusion block can be replaced to extrude the two test blocks, causing them to separate from both sides to test the peel strength. This eliminates the need to change equipment or location, further improving testing efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of peel strength testing performed on the test bench;

[0018] Figure 3 for Figure 1 A side view of the test block;

[0019] Figure 4 for Figure 2 Side view of the extrusion block;

[0020] Figure 5 for Figure 1 A schematic diagram of the unfolded installation mechanism;

[0021] Figure 6 for Figure 1 A schematic diagram showing the relationship between the motor and the moving block in the moving mechanism.

[0022] In the diagram: 1. Test bench; 2. Moving mechanism; 3. Load measuring instrument; 4. Hook; 5. Main shaft; 6. Pulling block; 7. Installation mechanism; 8. Limiting block; 9. Test block; 10. Mounting plate; 11. Force plate; 12. Support rod; 13. Extrusion block; 201. Moving groove; 202. Motor; 203. Moving block; 204. Gear rack; 205. Gear; 701. Spacer block; 702. Insertion rod; 703. Screw; 704. Force equalizing block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] Reference Figure 1-6An adhesive bonding strength testing device includes a test platform 1. Two load measuring instruments 3 are mounted on the top of the test platform 1 via a moving mechanism 2. The load measuring instruments 3 utilize existing mature technology and can measure specific data on tensile and compressive forces, thus facilitating the testing of adhesive bonding strength. The moving mechanism 2 is a mechanism for moving the load measuring instruments 3, enabling them to apply an external pulling force to test blocks 9, facilitating the testing of the adhesive strength between the two test blocks 9. Hooks 4 are fixedly connected to the measuring shafts of the two load measuring instruments 3. A main shaft 5 is located at one end of each hook 4, and a ring is fixedly connected to the other end of the main shaft 5. The hooks 4 are hung on the rings. When the load measuring instruments 3 are moved via the moving mechanism 2, the hooks 4 and the rings drive the main shaft 5 to pull, allowing the main shaft 5 to apply pressure to the test blocks 9, causing them to move. A pull block 6 is fixedly connected to the surface of the spindle 5. When the spindle 5 is pulled, it can drive the pull block 6 to move outward together. A limit block 8 is provided on one side of the pull block 6 through the mounting mechanism 7. The mounting mechanism 7 fixes the limit block 8 and the pull block 6 together. When the pull block 6 is pulled, it can drive the limit block 8 to move together. A test block 9 is slidably connected between the limit block 8 and the pull block 6. The test block 9 is a U-shaped block with fixed protrusions on both sides. The protrusions are coated with glue. The two test blocks 9 are glued to each other through the protrusions. When the limit block 8 pulls the test blocks 9 so that the two test blocks 9 are subjected to force towards the separation position, the strength of the glue adhesion can prevent the two test blocks 9 from easily separating. Thus, the load measuring instrument 3 can calculate the tensile force on the spindle 5, thereby conveniently determining the data of the glue adhesion strength.

[0025] Furthermore, the moving mechanism 2 includes two moving slots 201 opened on the top of the test platform 1. A motor 202 is fixedly connected to the side of the test platform 1. A moving block 203 is slidably connected inside the moving slot 201. The load measuring instrument 3 is fixedly connected to the top of the adjacent moving block 203. When it is necessary to move the load measuring instrument 3 to pull the test block 9, the motor 202 can be started. The motor 202 can drive the moving block 203 to move inside the moving slot 201, so that the load measuring instrument 3 can be driven to move, thereby pulling the main shaft 5.

[0026] Furthermore, a rack and pinion 204 is fixedly connected to the bottom of the moving block 203, and a gear 205 is driven to the output shaft of the motor 202. After the motor 202 is started, it can drive the gear 205 to rotate. The rotation of the gear 205 can drive the rack and pinion 204 to move, thereby causing the moving block 203 to move the load measuring instrument 3 through the rack and pinion 204. The rack and pinion 204 mesh with the gear 205, so the gear 205 can drive the rack and pinion 204 to move when it rotates. The moving block 203 is inverted U-shaped, and there are plates on both sides of the moving groove 201 that restrict the upward movement of the moving block 203. This can fix the trajectory of the moving block 203 inside the moving groove 201, and prevent misalignment or skew. This ensures that the trajectory of the load measuring instrument 3 is fixed, which facilitates the pulling of the load measuring instrument 3 on the main shaft 5 and prevents the load measuring instrument 3 from skewing when pulling the main shaft 5, which would lead to inaccurate measurement.

[0027] Furthermore, the installation mechanism 7 includes two spacer blocks 701 located between the pull block 6 and the limit block 8. Insertion rods 702 are fixedly connected to the top and bottom of the spacer blocks 701, and the insertion rods 702 are respectively inserted into the interior of the pull block 6 and the limit block 8. The thickness of the spacer block 701 can be adjusted according to actual needs to ensure that the test block 9 can be easily inserted between the limit block 8 and the pull block 6, so that the limit block 8 can apply force to pull the test block 9. During installation, the two insertion rods 702 on the spacer block 701 need to be inserted into the surfaces of the pull block 6 and the limit block 8 respectively, so that the spacer block 701 is stably located in the middle of the pull block 6 and the limit block 8.

[0028] Furthermore, the insertion rod 702 is internally threaded with a T-shaped screw 703, and the top of the pulling block 6 is provided with a triangular force equalizing block 704. After the insertion rod 702 is inserted into the pulling block 6 and the limiting block 8, the screw 703 is rotated into the insertion rod 702, so that the insertion rod 702 cannot be separated from the pulling block 6 and the limiting block 8. This allows the spacer block 701 to be fixed between the pulling block 6 and the limiting block 8. The protruding parts of the two screws 703 at opposite ends prevent the insertion rod 702 from separating from the pulling block 6 and the limiting block 8. The force equalizing block 704 facilitates the main shaft 5 to apply force evenly to the pulling block 6 for pulling.

[0029] Furthermore, a mounting plate 10 is fitted onto the surface of the load measuring instrument 3. A force plate 11 is fixedly connected to the surface of the mounting plate 10 by bolts. Four support rods 12 are fixedly connected to the surface of the force plate 11. Extrusion blocks 13 are fixedly connected between the four support rods 12. When it is necessary to test the peel strength of the adhesive, the main shaft 5 needs to be removed from the hook 4 first, and then the force plate 11 is moved to the measuring shaft of the load measuring instrument 3 and fixed to the mounting plate 10 by bolts. At this time, the four support rods 12 and the extrusion blocks 13 are fixed on the measuring shaft of the load measuring instrument 3. Then, the two openings of the test mechanism composed of two test blocks 9 are aligned with the two extrusion blocks 13 respectively. Then, the motor 202 is started. The motor 202 makes the two load measuring instruments 3 move closer to each other, so that the extrusion blocks 13 squeeze the test blocks 9, thereby squeezing and separating the adhesive between the test blocks 9. At this time, the peel strength of the adhesive can be measured.

[0030] In summary:

[0031] When testing the adhesive strength, the limiting block 8 is first fixed to the pulling block 6 via the spacer block 701. During this process, the test block 9 is placed between the limiting block 8 and the pulling block 6. Then, the insertion rod 702 on the spacer block 701 is inserted into the limiting block 8 and the pulling block 6 respectively. The screw 703 is then rotated to allow it to enter the insertion rod 702, confining it within the limiting block 8 and the pulling block 6, thus restricting the test block 9. Adhesive is then applied to the protrusions of the two test blocks 9 and bonded together. Next, the ring on the main shaft 5 is placed on the hook 4, and the motor 202 is started. The motor 202 causes the gear 205 to rotate, which in turn drives the meshing rack 204 to move. This causes the moving block 203 to move in the moving groove 201, moving the load measuring instrument 3. The load measuring instrument 3 then drives the main shaft 5 via the hook 4 on the measuring shaft. The main shaft 5 can move and separate the two test blocks 9 through the pulling block 6 and the limiting block 8. The main shaft 5 can easily apply a uniform force to the pulling block 6 through the force equalizing block 704, so that the adhesive strength can be recorded. When it is necessary to measure the peel strength, the main shaft 5 is removed from the hook 4, and then the force plate 11 is fixed to the mounting plate 10 with bolts. Then, the two glued test blocks 9 are placed on the test table 1, and the motor 202 is started to bring the two load measuring instruments 3 closer to each other. This causes the extrusion block 13 on the force plate 11, which is fixed by the support rod 12, to extrude the openings of the two test blocks 9, causing the two test blocks 9 to separate from both ends, thus conveniently measuring the peel strength of the adhesive. With the above structure, the peel strength of the adhesive can be evaluated by peel test and the tensile strength of the adhesive can be evaluated by tensile test. It can also be conveniently pulled from both sides for testing. There is no need to manually reposition it when testing multiple times.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adhesive bonding strength testing device, comprising a test bench (1), characterized in that, The top of the test bench (1) is provided with two load measuring instruments (3) via a moving mechanism (2). The measuring shafts of the two load measuring instruments (3) are fixedly connected to hooks (4). One end of the hooks (4) is provided with a main shaft (5). A pulling block (6) is fixedly connected to the surface of the main shaft (5). A limiting block (8) is provided on one side of the pulling block (6) via an installation mechanism (7). A test block (9) is slidably connected between the limiting block (8) and the pulling block (6).

2. The adhesive bonding strength testing device according to claim 1, characterized in that, The moving mechanism (2) includes two moving slots (201) opened on the top of the test platform (1), a motor (202) is fixedly connected to the side of the test platform (1), a moving block (203) is slidably connected inside the moving slot (201), and the load measuring instrument (3) is fixedly connected to the top of the adjacent moving block (203).

3. The adhesive bonding strength testing device according to claim 2, characterized in that, The bottom of the moving block (203) is fixedly connected to a rack (204), and the output shaft of the motor (202) is driven by a gear (205).

4. The adhesive bonding strength testing device according to claim 1, characterized in that, The installation mechanism (7) includes two spacer blocks (701) located between the pull block (6) and the limiting block (8). Insertion rods (702) are fixedly connected to the top and bottom of the spacer blocks (701), and the insertion rods (702) are respectively inserted into the interior of the pull block (6) and the limiting block (8).

5. The adhesive bonding strength testing device according to claim 4, characterized in that, The insertion rod (702) is internally threaded with a T-shaped screw (703), and the top of the pulling block (6) is provided with a triangular force equalizing block (704).

6. The adhesive bonding strength testing device according to claim 1, characterized in that, The load measuring instrument (3) is fitted with a mounting plate (10), and a force plate (11) is fixedly connected to the surface of the mounting plate (10) by bolts. Four support rods (12) are fixedly connected to the surface of the force plate (11), and a compression block (13) is fixedly connected between the four support rods (12).

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