Glue peel strength testing device

Abstract

The utility model relates to a glue peel strength testing device. The device comprises a base, a test plate, a driving mechanism and a stripping mechanism, the stripping mechanism comprises a clamping base connected to the driving mechanism in a buckled mode, one end of a pressing plate is arranged below the clamping base, the other end of the pressing plate is connected with an elastic extrusion block, and the surface of the extrusion block is a guide face; the driving mechanism drives the clamping seat to drive the extrusion block to descend and move to one side of the test plate, and the extrusion block is in staggered contact with the test surface under the action of the guide surface and the elastic deformation in the continuous descending process of the extrusion block so as to extrude air bubbles on the test surface caused by sticking of the stickers. During testing, the extruding block at the lower end of the pressing plate flattens the stickers repeatedly in the lifting process and extrudes bubbles on the testing surface, it is guaranteed that the testing lengths of the stickers are the same in the testing process, the pasting degrees of the stickers on the testing surface are the same, and operation steps are simple and efficient.

Description

Technical Field

[0001] The utility model relates to the field of glue testing, in particular to a glue peeling strength testing device. Background Art

[0002] The maximum peel strength of glue refers to the maximum force required to forcibly separate two surfaces bonded by glue under standard peeling conditions. It is calculated based on the glue bonding area and its unit is KN / M. The strength of the maximum peel strength represents the quality of the glue bonding performance.

[0003] The existing maximum peel strength test method is to use glue to make stickers, stick the stickers on a test board, and then use a peel strength test device to test. The glue peel strength test device generally includes a base, a test board, a peeling mechanism, a number of stickers, and a traction sensor. The test board is vertically fixed on the base and one side is a test surface. One end of one of the stickers is coated with the glue to be tested, and the end coated with glue is selectively applied to the test surface, and the other end of the corresponding sticker is a free end that is folded back and fixed on the driving mechanism of the peeling mechanism. The sticker is peeled off the test surface by the rising of the driving mechanism. The traction sensor is used to detect the maximum traction force that the sticker is subjected to in the process of gradually peeling off the test surface. The maximum traction force represents the peel strength of the glue.

[0004] However, in this process, after the sticker is adhered to the test board, it is necessary to manually use a pressing shaft to press the sticker back and forth or put the test board into a pressing device for pressing, so as to expel the bubbles in the sticker adhesion area and ensure that the sticker is completely adhered to the test board. The steps are cumbersome and the test progress is slow. Utility Model Content

[0005] Based on this, it is necessary to provide a glue peel strength testing device to address the problem of cumbersome test steps for glue peel strength, which has the advantages of simple test steps and high efficiency.

[0006] The utility model is realized by the following technical scheme, a glue peeling strength testing device comprises:

[0007] Pedestal;

[0008] The test plate is fixed vertically on the base, with one side being the test surface;

[0009] The stripping mechanism comprises a driving mechanism and a clamping seat driven to rise and fall by the driving mechanism;

[0010] A plurality of stickers, one end of which is coated with glue to be tested, and the end coated with glue is selectively pasted on the test surface, the other end of the corresponding sticker is a free end that is folded back and clamped by a clamping seat, and the driving mechanism drives the clamping seat to rise and drives the sticker to be peeled off the test surface;

[0011] A traction sensor, which is used to detect the maximum traction force to which the sticker is subjected during the process of gradually peeling off the test surface, wherein the maximum traction force represents the peeling strength of the glue; and

[0012] The pressing plate is fixed on the driving mechanism and driven by the driving mechanism to rise or fall vertically relative to the test plate so as to be correspondingly away from the test plate or located on the side of the test plate having the test surface; the pressing plate is connected to an elastic extrusion block, and the surface of the extrusion block is a guide surface; the driving mechanism drives the clamping seat to drive the extrusion block to move downward to one side of the test plate, and when the extrusion block continues to descend, it is displaced and contacted with the sticker on the test surface under the action of the guide surface and elastic deformation, so as to squeeze out the bubbles on the test surface caused by the sticker sticking.

[0013] When the free end of the glue peeling strength testing device of the utility model is clamped by the driving mechanism, the driving mechanism rises to perform the test, and the test is divided into three steps. The first step is that the pressing plate rises synchronously with the driving mechanism, and the sticker is transformed from a relaxed state to a tight state; the second step is that the pressing plate continues to rise synchronously with the driving mechanism, and the sticker in the tight state is peeled off from the test surface; the third step is that the driving mechanism stops rising, and the sticker on the test surface is completely peeled off.

[0014] When using this device for testing, the step of additionally squeezing the sticker on the test board in the traditional test device is omitted. During the rising or falling process of the driving mechanism relative to the test board, the squeezing block of the pressing plate squeezes the sticker on the test board, thereby expelling the bubbles of the sticker in the sticker squeezing area and strengthening the adhesion between the sticker and the test board.

[0015] As a further improvement of the above solution, a guide block is provided on one side of the pressure plate having the test surface, and the extrusion block is guided by the guide block and then extruded onto the sticker on the test surface.

[0016] As a further improvement of the above solution, the guide block is integrally formed on the test plate.

[0017] As a further improvement of the above solution, the guide block is arranged above one end of the sticker coated with glue.

[0018] As a further improvement of the above solution, a limit block is provided on the side of the pressing plate, and the limit block and the test plate are located on the same side of the pressing plate.

[0019] As a further improvement of the above solution, a positioning groove is provided on the end surface of the test plate facing the clamping seat, and the limit block descends and engages in the positioning groove, and the pressure plate stops descending.

[0020] When the glue peeling strength testing device of the utility model is in use, the descent of the driving mechanism can be divided into three steps. The first step is that the pressing plate follows the driving mechanism to descend, and the extrusion block is elastically deformed after touching the guide block; the second step is that the pressing plate follows the driving mechanism to descend, and the deformed extrusion block contacts the sticker and squeezes the sticker; the third step is that the limit block completely enters the positioning groove, and the driving mechanism and the pressing plate stop descending.

[0021] As a further improvement of the above solution, the limiting block is integrally formed on the pressing plate.

[0022] As a further improvement of the above solution, the guide block is arranged above one end of the sticker coated with glue.

[0023] As a further improvement of the above solution, the stripping mechanism also includes a clamping seat driven to rise and fall by a driving mechanism; the free end is folded back and fixed on the clamping seat.

[0024] As a further improvement of the above solution, the clamping seat is provided with a clamping opening located in the upward extending direction of the test plate, and an adjustment component is arranged on one side of the clamping opening.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] 1. The utility model sets a deformation point and an extrusion end at one end of the pressure plate. After the sticker is pasted on the test surface, the clamping seat drives the pressure plate to descend. After descending to a certain height, when the extrusion block contacts the guide block, the extrusion block produces elastic deformation, and in the subsequent lifting process, the extrusion block squeezes the bubbles in the sticker pasted on the test surface, ensuring that the sticker is in a completely covered state during the test process, thereby ensuring the practicality of the device.

[0027] 2. The utility model can test the peeling strength of glue through the cooperation of the driving mechanism and the peeling mechanism. When conducting the test, after adhering the sticker to be tested on the test plate, the free end of the sticker is flipped 180° and inserted into the clamping mouth to be clamped by the clamping seat. The driving mechanism drives the pressing plate to descend and fix the sticker on the test plate. The pressing plate and the test plate are provided with a limit block and a positioning groove that can work together. When the limit block completely enters the positioning groove, the pressing plate stops descending, and the test length of the sticker is fixed, and then the driving mechanism drives the pressing plate to rise for the peeling strength test. In each test process, the measured length of the sticker is the same and meets the requirements of the standard test length. When using this device for testing, the steps are simple and efficient, which ensures the rigor and reliability of the test using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of a glue peeling strength testing device of the utility model;

[0029] Figure 2 for Figure 1 Another perspective of the three-dimensional image of the glue peel strength test device;

[0030] Figure 3 for Figure 1 Front view of the medium glue peel strength test device;

[0031] Figure 4 for Figure 3 A partial enlarged view of part A;

[0032] Figure 5 for Figure 4 Schematic diagram of some structures of medium voltage board, sticker and test board;

[0033] Figure 6 for Figure 5 Partial structure of the medium voltage plate, sticker and test plate. Schematic diagram of the medium voltage plate after it is lowered.

[0034] Main component symbols

[0035] 1. Base;

[0036] 2. Test plate; 21. Test surface; 22. Positioning groove; 23. Guide block;

[0037] 3. Stripping mechanism;

[0038] 31. Clamping seat; 311. Clamping opening; 312. Adjusting assembly;

[0039] 32. Driving mechanism;

[0040] 33. Pressing plate; 331. Limiting block; 332. Extrusion block;

[0041] 4. Sticker; 41. Free end;

[0042] 5. Control panel.

[0043] The above main component symbols are combined with the accompanying drawings and specific implementation methods to further illustrate the present invention in detail. DETAILED DESCRIPTION

[0044] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0047] Please refer to Figure 1 and Figure 2 The glue peeling strength test device shown in the figure comprises: a base 1, a test plate 2, a peeling mechanism 3, a traction sensor and a plurality of stickers 4. The peeling mechanism 3 comprises a driving mechanism 32 and a clamping seat 31 driven to rise and fall by the driving mechanism 32. The clamping seat 31 has a clamping opening 311 (such as Figure 4 When using the device to test the performance of glue, the glue to be tested is first coated on one end of the sticker 4, and the end coated with glue is selectively applied to the test surface 21 of the test board 2, and the other end of the corresponding sticker 4 is clamped by the clamping seat 31, and the driving mechanism 32 drives the clamping seat 31 to drive the sticker 4 to peel off the test surface 21.

[0048] It is worth noting that the clamping seat 31 further includes an adjusting component 312 disposed on one side of the clamping opening 311 , and the adjusting component 312 clamps the free end 41 by adjusting the width of the clamping opening 311 .

[0049] In this embodiment, the driving mechanism may include a motor installed in a base and a track that runs back and forth through forward and reverse rotation of the motor. The clamping seat is fixed to one of the track plates of the track. The forward rotation of the motor drives the track to rotate forward and drive the clamping seat to rise, and the reverse rotation of the motor drives the track to rotate reversely and drive the clamping seat to descend.

[0050] Among them, a traction sensor is arranged in the base 1, which monitors the current direction and current magnitude of the motor connected thereto, judges the rising and falling states of the clamping seat 31 according to the current direction, and calculates the traction force magnitude of the glue through the current magnitude. A control panel 5 is also arranged on the base 1.

[0051] Please refer to Figure 3As shown, one end of the test board 2 is vertically fixed on the base 1, and the other end extends toward the clamping seat 31 in the vertical direction, and one side is a test surface 21. A positioning groove 22 is provided on the end surface of the test board 2 facing the pressure plate 33, and a guide block 23 is provided on the test surface 21. The guide block 23 is arranged above the end of the sticker 4 coated with glue, and the surface of the guide block 23 is a guide surface. The guide block 23 is integrally formed on the test board 2, and the shape of the guide block 23 includes but is not limited to a semicircular shape and an elliptical shape.

[0052] In this embodiment, a sticker 4 is taken, one end of which is coated with the glue to be tested, and the end coated with glue is selectively applied to the test surface 21 of the test board 2, and the other end of the corresponding sticker 4 is a free end 41 that is folded back 180° and inserted into the clamping opening 311 to be clamped by the clamping seat 31, and the driving mechanism 32 drives the clamping seat 31 to drive the sticker 4 to peel off the test surface 21.

[0053] It is worth noting that the free end 41 can be manually placed in the clamping seat 31 and clamped, and when the free end 41 is clamped by the clamping opening 311, the sticker 4 remains in a relaxed state.

[0054] See also Figure 4 As shown, one end of the pressing plate 33 is fixed below the clamping seat 31, and the other end is a squeezing block 332. A stopper block 331 that can be engaged in the positioning groove 22 is provided on the side of the pressing plate 33, and the stopper block 331 is integrally formed with the pressing plate 33. The driving mechanism 32 drives the clamping seat 31 to drive the squeezing block 332 to move downward to one side of the test plate 2, and the squeezing block 332 is displaced on the test surface 21 under the action of the guide surface and elastic deformation during the continuous descent of the squeezing block 332, so as to squeeze out the bubbles on the test surface 21 caused by the sticker 4. When the stopper block 331 is engaged in the positioning groove 22, the pressing plate 33 prevents the sticker 4 from peeling off the test surface 21 by its own gravity.

[0055] It is worth noting that when the pressing plate 33 is above the test plate 2, a test space is left between the pressing plate 33 and the test surface 21, and the sticker can be placed in the test space. The width of the extrusion block 332 is greater than the width of the pressing plate 33, and is less than or equal to the width of the pressing plate plus the width of the test space. The surface of the extrusion block 332 is a guide surface. When the extrusion block 332 contacts the guide block 23, the guide surfaces of the two cooperate with each other, and the extrusion block 332 produces elastic deformation, and the deformation direction is the direction away from the test surface 21.

[0056] In another embodiment, before the extrusion block 332 contacts the sticker 4 on the test surface 21, the extrusion block 332 can be manually adjusted to cause the extrusion block 332 to produce elastic deformation. When the extrusion block 332 contacts the sticker 4, the manual adjustment is removed, so that the elastically deformed extrusion block 332 contacts the sticker 4 and squeezes the sticker 4 according to the elastic force.

[0057] Among them, when the extrusion block 332 contacts the sticker 4, the sticker 4 is subjected to the pressure transmitted by the extrusion block 332. In each test, the extrusion length of the extrusion block 332 on the sticker 4 is a fixed value, and the fixed value is specifically the vertical straight-line distance from the limit block 331 to the extrusion block 332, and the width of the extrusion block 332 is fixed, ensuring that the measured length of the sticker 4 is a fixed value each time measurement is performed, ensuring a standard measurement distance, and thereby collecting sufficient measurement data.

[0058] In this embodiment, if Figure 5 As shown, the surfaces of the extrusion block 332 and the guide block 23 are both guide surfaces. When the extrusion block 332 descends and contacts the guide block 23, the guide surface of the extrusion block 332 and the guide surface of the guide block 23 squeeze and collide with each other, and the extrusion block 332 produces elastic deformation and the deformation direction is away from the test surface 21.

[0059] like Figure 6 As shown, when the extrusion block 332 descends and contacts the sticker 4, the extrusion block 332 is no longer squeezed by the guide block 23, and releases the elastic potential to move toward the test surface 21. During the movement of the extrusion block 332 toward the test surface 21, the extrusion block 332 always transmits pressure to the sticker 4 in contact. The sticker 4 is affected by the pressure and is more firmly adhered. During the movement of the extrusion block 332, the bubbles in the adhesive area of ​​the sticker 4 are removed, ensuring that the degree of adhesion of the sticker 4 is the same each time the test is performed.

[0060] During the test, the thickness of the sticker 4 does not exceed the thickness of the guide block 23 .

[0061] Testing with the device can be divided into four steps:

[0062] S1. Use the glue to be tested to coat one end of the sticker 4, use the driving mechanism 32 to drive the clamping seat 31 to rise for the first time, and after the test surface 21 is exposed, stick the end of the sticker 4 coated with glue straightly on the test surface 21, and clamp the free end 41 of the sticker 4 in the clamping opening 311.

[0063] S2, the driving mechanism 32 drives the clamping seat 31 to descend. During the descent, the extrusion block 332 contacts the guide block 23 to generate elastic deformation, and the deformed extrusion block 332 contacts the sticker 4 and extrude the sticker 4 until the limit block 331 completely enters the positioning groove 22. The descent process stops, and the area between the limit block 331 and the extrusion end 332 is a sticker 4 extrusion area with a constant area.

[0064] S3, the driving mechanism 32 drives the clamping seat 31 to rise for the second time, and the pressing plate 33 rises along with the clamping seat 31, and the sticker 4 changes from a relaxed state to a tight state, until the end of the sticker 4 coated with glue completely leaves the test surface 21, and a set of test data of the sticker 4 is obtained.

[0065] S4, repeating steps S1 to S3 until a number of stickers 4 are traversed, and calculating the maximum peel strength of the glue according to the obtained groups of test data.

[0066] Among them, step S2 can be divided into three steps. The first step is that the pressing plate 33 follows the clamping seat 31 to descend, and the extrusion block 332 contacts the guide block 23 to produce elastic deformation; the second step is that the pressing plate 33 follows the clamping seat 31 to descend, and the deformed extrusion block 332 contacts the sticker 4 and squeezes the sticker 4; the third step is that the limit block 331 completely enters the positioning groove 22, and the clamping seat 31 and the pressing plate 33 stop descending.

[0067] Furthermore, step S3 can be divided into three steps. The first step is that the pressing plate 33 rises synchronously with the clamping seat 31, and the sticker 4 is transformed from a relaxed state to a tight state; the second step is that the pressing plate 33 continues to rise synchronously with the clamping seat 31, and the sticker 4 is peeled off; the third step is that the clamping seat 31 stops rising, and the sticker 4 on the test surface 21 is completely peeled off.

[0068] The existing glue peel strength test method is to make a sticker 4 using the glue to be tested, adhere the sticker 4 to a test board 2, and then use a peel strength test device to test it. However, in this process, after the adhesive tape is adhered to the test board 2, it is necessary to manually use a pressure roller to press the adhesive tape back and forth or put the test board 2 into a pressing device for pressing, so as to expel the bubbles in the adhesive area of ​​the sticker 4 and ensure that the sticker 4 is completely adhered to the test board 2. The test steps are cumbersome and the progress is slow. The utility model, on the other hand, adheres the sticker 4 to the test board 2 and sets a pressing plate 33 on the clamping seat 31. During the rising or falling process of the clamping seat 31 relative to the test board 2, the squeezing block 332 under the pressing plate 33 squeezes the sticker 4 on the test board 2, thereby expelling the bubbles in the adhesive area of ​​the sticker 4 and ensuring that the sticker 4 of standard length is completely adhered to the test board 2.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A glue peel strength testing device, comprising: Base (1); A test plate (2) is vertically fixed on the base (1) and has a test surface (21) on one side; The peeling mechanism (3) comprises a driving mechanism (32); A plurality of stickers (4), one end of one of the stickers (4) is coated with glue to be tested, and the end coated with glue is selectively pasted on a test surface (21), and the other end of the corresponding sticker (4) is a free end (41) that is folded back and fixed on a driving mechanism (32), and the sticker (4) is driven to peel off the test surface (21) by the upward movement of the driving mechanism (32); and A traction sensor, used to detect the maximum traction applied to the sticker (4) during the process of gradually peeling off the test surface (21), wherein the maximum traction represents the peeling strength of the glue; It is characterized in that The glue peel strength testing device also includes: A pressing plate (33) is fixed on a driving mechanism (32) and driven by the driving mechanism (32) to vertically rise or fall relative to a test plate (2) so as to be respectively away from the test plate (2) or located on a side of the test plate (2) having a test surface (21); the pressing plate (33) is connected to an elastic extrusion block (332), and a surface of the extrusion block (332) is a guide surface; the driving mechanism (32) drives the extrusion block (332) to move downward to one side of the test plate (2), and when the extrusion block (332) continues to descend, it contacts the sticker (4) on the test surface (21) in a displaced manner under the action of the guide surface and elastic deformation, so as to squeeze out bubbles on the test surface (21) caused by the sticker (4) being pasted.

2. The glue peeling strength testing device according to claim 1, characterized in that: The test board (2) has a test surface (21) on one side of which a guide block (23) is arranged, and the extrusion block (332) is guided by the guide block (23) and then extruded onto the sticker (4) on the test surface (21).

3. The glue peeling strength testing device according to claim 2, characterized in that: The guide block (23) is integrally formed on the test plate (2).

4. The glue peeling strength testing device according to claim 3, characterized in that: The guide block (23) is arranged above the end of the sticker (4) coated with glue.

5. The glue peeling strength testing device according to claim 1, characterized in that: A limit block (331) is arranged on the side of the pressing plate (33), and the limit block (331) and the test plate (2) are located on the same side of the pressing plate (33).

6. The glue peeling strength testing device according to claim 5, characterized in that: A positioning groove (22) is provided on the end surface of the test plate (2) facing the pressing plate (33), and the limit block (331) descends and engages in the positioning groove (22), and the pressing plate (33) stops descending.

7. The glue peeling strength testing device according to claim 5, characterized in that: The limiting block (331) is integrally formed on the pressing plate (33).

8. The glue peeling strength testing device according to claim 5, characterized in that: The guide block (23) is arranged above the end of the sticker (4) coated with glue.

9. The glue peeling strength testing device according to claim 1, characterized in that: The stripping mechanism (3) also includes a clamping seat (31) driven to rise and fall by a driving mechanism (32), and the free end (41) is folded back and fixed on the clamping seat (31).

10. The glue peeling strength testing device according to claim 9, characterized in that: The clamping seat (31) is provided with a clamping opening (311) located in the upward extending direction of the test plate (2), and an adjustment component (312) is arranged on one side of the clamping opening (311).

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