Binding force testing device

Abstract

The utility model discloses a binding force testing device, which relates to the technical field of membrane material testing and comprises a base, a fixing mechanism, a bonding mechanism and a testing mechanism. The fixing mechanism is arranged on the base and is used for fixing a sample to be tested and exposing a test surface of the sample to be tested; the bonding mechanism is arranged on the base and is used for providing gummed paper with a bonding surface and bonding the gummed paper on the test surface of the sample to be tested on the fixing mechanism; the testing mechanism is provided with a clamping piece and a force sensor, the clamping piece can be movably installed on the machine base in the transverse direction and the longitudinal direction and is used for clamping gummed paper and stripping the gummed paper in the moving process of the clamping piece, and the force sensor is located between the machine base and the clamping piece and is used for sensing force applied by the clamping piece; the automation degree of the testing process is high, errors caused by human factors are reduced, the binding force testing result can be obtained more accurately, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of film material testing, and particularly relates to an adhesion testing device. Background Art

[0002] A film layer with good coating adhesion performance has a wide range of application prospects. Adhesion testing is to ensure the adhesion quality between the coating layer and the substrate material, which is crucial for ensuring the product performance and service life.

[0003] The tape method is to paste a tape on the coating surface and then quickly tear it off to evaluate the adhesion of the coating. The tape method often uses an artificial way to tear the film layer, and then observes the attachment of particles on the surface of the coating layer to determine the adhesion level, so as to indirectly evaluate the adhesion level. However, it is very difficult to ensure that the personnel fully perform the operations according to the standards during the pasting and tearing processes by using the artificial tearing method, and the test results are prone to errors. Content of the Utility Model

[0004] The main purpose of the utility model is to propose an adhesion testing device, aiming to directly test the adhesion through the device and reduce the errors in the artificial testing process.

[0005] To achieve the above object, the adhesion testing device proposed by the utility model includes a machine base, a fixing mechanism, an adhesive mechanism, and a testing mechanism;

[0006] The fixing mechanism is arranged on the machine base to fix the sample to be tested and expose its testing surface;

[0007] The adhesive mechanism is arranged on the machine base to provide a tape with an adhesive surface and bond it to the testing surface of the sample to be tested on the fixing mechanism;

[0008] The testing mechanism has a clamping member and a force sensor. The clamping member can be movably installed on the machine base in the transverse and longitudinal directions to clamp the tape and peel the tape during the movement of the clamping member. The force sensor is located between the machine base and the clamping member to sense the force applied by the clamping member.

[0009] In an embodiment, the fixing mechanism includes a fixing seat and a pressing member; the fixing seat is arranged on the machine base for placing the sample to be tested; the pressing member is detachably installed on the fixing seat, and the middle part of the pressing member is hollowed out to expose the testing surface.

[0010] In an embodiment, the fixing mechanism further includes two magnetic attraction parts that cooperate with each other. One magnetic attraction part is arranged on the fixing seat, and the other magnetic attraction part is arranged on the pressing member to magnetically fix the pressing member and the fixing seat.

[0011] In an embodiment, the two magnetic attraction parts include a first magnetic attraction part and a second magnetic attraction part;

[0012] A magnet is provided on the fixed seat, and the magnet forms a first magnetic attraction portion.

[0013] At least a part of the pressing member is made of a magnetic material to form a second magnetic attraction portion.

[0014] In one embodiment, at least two grooves are formed on the upper surface of the fixed seat.

[0015] Each groove corresponds to the edge of the pressing member for placing the magnet.

[0016] In one embodiment, the bonding mechanism includes a tape mounting structure and a pressing head.

[0017] The tape mounting structure is used to provide a tape that extends laterally.

[0018] The pressing head is located above the fixed seat and is movably mounted on the machine base in the up and down direction to press the bonding surface of the tape against the test surface of the sample to be tested.

[0019] In one embodiment, the tape mounting structure includes a tape supply seat, a tape roll mounting roller, a winding roller, and at least two guide rollers.

[0020] The tape supply seat is mounted on the machine base.

[0021] The tape roll mounting roller is mounted on the tape supply seat for mounting the tape roll.

[0022] The winding roller and the tape roll mounting roller are arranged on the tape supply seat at a lateral interval for winding the tape.

[0023] At least two guide rollers are arranged on the tape supply seat at a lateral interval and are located between the tape roll mounting roller and the winding roller for partial overlap of the tape.

[0024] In one embodiment, the tape mounting structure further includes a synchronous belt drive assembly and a winding motor.

[0025] The synchronous belt drive assembly has a driving wheel and a driven wheel, and the driven wheel is coaxially and fixedly connected to the winding roller; the winding motor is mounted on the tape supply seat for driving the driving wheel.

[0026] In one embodiment, the testing mechanism further includes a lead screw structure and a testing motor; the lead screw structure is mounted on the machine base and has a laterally movable slider; the testing motor is mounted on the machine base and is connected to the lead screw of the lead screw structure; the clamping member is arranged on the slider.

[0027] In one embodiment, the clamping member is movably mounted on the slider through an adjusting cylinder that expands and contracts longitudinally.

[0028] The technical solution of the present utility model fixes the sample to be tested by using a fixing mechanism and exposes the surface to be tested. Then, an adhesive mechanism is used to provide a tape with an adhesive surface and bond the adhesive surface of the tape to the test surface. Finally, the clamping member of the testing device moves longitudinally to the position of the tape, clamps one end of the bonded tape, and then moves horizontally at a constant speed to drive the tape to peel off from the test surface of the sample to be tested. Thus, the bonding force is measured by a force sensor. During the uniform movement of the clamping member clamping the tape, the force sensor is located between the clamping member and the machine base, and it can measure the force exerted by the clamping member on the sensor. The force exerted by the clamping member on the force sensor is equal in magnitude to the resistance of the tape received by the clamping member. The bonding force between the sample to be tested and the tape can be evaluated according to the resistance of the tape received by the clamping member, that is, the bonding force between the sample to be tested and the tape is evaluated according to the reading of the force sensor, thereby completing the detection. The automation degree of this technical solution in the testing process is high, the error caused by human factors is small, the bonding force test result can be accurately obtained, and the labor cost is reduced. Brief Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0030] Figure 1 It is a schematic structural diagram of an embodiment of the bonding force testing device provided by the present utility model;

[0031] Figure 2 For Figure 1 It is a schematic structural diagram of the structure of the fixing mechanism in

[0032] Figure 3 For Figure 1 It is a schematic structural diagram of the tape mounting structure in

[0033] Figure 4 For Figure 3 It is a schematic structural diagram of the side opposite to the tape mounting structure in

[0034] Figure 5 For Figure 1 It is a schematic structural diagram of the mounting structure of the indenter in

[0035] Figure 6 For Figure 1 It is a partial schematic structural diagram of the testing mechanism in

[0036] Figure 7 For Figure 1 It is a partial schematic structural diagram of the testing mechanism in

[0037] Description of the reference numerals in the drawings:

[0038] 100, bonding strength testing device; 1, machine base; 2, fixing mechanism; 21, fixing seat; 211, groove; 212, magnet; 22, pressing member; 3, bonding mechanism; 31, adhesive tape mounting structure; 311, glue supply seat; 312, film mounting roller; 313, winding roller; 314, guiding roller; 315, synchronous belt drive assembly; 315A, driving wheel; 315B, driven wheel; 316, winding motor; 32, pressing head; 321, support frame; 322, cylinder mounting seat; 323, lifting cylinder; 4, testing mechanism; 41, lead screw structure; 411, lead screw; 412, slider; 42, testing motor; 43, adjusting cylinder; 44, force sensor; 45, clamping member.

[0039] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0041] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0043] The present utility model provides an adhesion testing device 100, which uses a composite film as a sample to be tested, and takes the adhesion of the composite film with adhesive tape as an example for testing.

[0044] Please refer to Figure 1 and Figure 7 , in an embodiment of the present utility model, with the illustrated direction as the horizontal and vertical directions, the adhesion testing device 100 includes a machine base 1, a fixing mechanism 2, an adhesion mechanism 3, and a testing mechanism 4; the fixing mechanism 2 is arranged on the machine base 1 for fixing the sample to be tested and exposing its testing surface; the adhesion mechanism 3 is arranged on the machine base 1 for providing an adhesive tape with an adhesive surface and adhering the adhesive surface of the adhesive tape to the testing surface of the sample to be tested on the fixing mechanism 2; the testing mechanism 4 has a clamping member 45 and a force sensor 44. The clamping member 45 can be movably installed on the machine base 1 along the horizontal and vertical directions for clamping the adhesive tape and peeling the adhesive tape during the movement of the clamping member 45. The force sensor 44 is located between the machine base 1 and the clamping member 45 for sensing the force applied by the clamping member 45.

[0045] The technical solution of the present utility model fixes the sample to be tested by using the fixing mechanism 2 and exposes the testing surface, then uses the adhesion mechanism 3 to provide an adhesive tape with an adhesive surface and adheres the adhesive surface of the adhesive tape to the testing surface. Finally, the clamping member 45 of the testing device 4 moves longitudinally to the position of the adhesive tape, clamps one end of the adhered adhesive tape, and then moves horizontally at a constant speed to drive the adhesive tape to peel off from the testing surface of the sample to be tested, so as to measure the adhesion force through the force sensor; the force sensor is located between the clamping member 45 and the machine base 1. During the uniform movement of the clamping member 45 clamping the adhesive tape, the force sensor 44 can measure the force exerted by the clamping member 45 on the force sensor 44 itself, and the force received by the force sensor 44 from the clamping member 45 is equal to the resistance of the adhesive tape received by the clamping member 45. The adhesion force between the sample to be tested and the adhesive tape can be evaluated according to the resistance of the adhesive tape received by the clamping member 45, that is, the adhesion force between the sample to be tested and the adhesive tape is evaluated according to the reading of the force sensor 44, so as to complete the detection; the automation degree of this technical solution in the testing process is high, the error caused by human factors is small, the adhesion force test result can be obtained more accurately, and the labor cost is reduced.

[0046] The machine base 1 of this embodiment forms a horizontal testing platform for installing other mechanisms. The machine base 1 is composed of aluminum profiles, which are fixed by angle aluminum, and floor feet are installed at the bottom to fix the position of the machine base 1.

[0047] Please refer to Figure 1 and Figure 2, in an embodiment of the present utility model, in order to fix test samples of different specifications, the fixing mechanism 2 includes a fixing base 21 and a pressing member 22; the fixing base 21 is arranged on the machine base 1 for placing the test samples; the pressing member 22 is detachably installed on the fixing base 21, and the middle part of the pressing member 22 is hollowed out to expose the test surface. By using the fixing base 21 to place the test samples and using the pressing member 22 to press the test samples, fixation is achieved, avoiding situations such as movement and tearing of the composite film during the bonding strength test; at the same time, the center of the pressing member 22 is hollowed out to expose the test surface for convenient testing, and the detachable pressing member 22 can test test samples of different specifications.

[0048] In this embodiment, the hollowed-out shape in the middle of the pressing member 22 is square.

[0049] Further, the fixing base 21 is movably arranged on the machine base 1 along the horizontal direction and can be adjusted to align the test sample with the bonding surface, ensuring that the extension directions of the adhesive tape and the test sample are parallel.

[0050] When fixing the test sample, different pressing members 22 are selected according to the size of the test surface of the test sample. The hollowed-out areas in the middle of different pressing members 22 are different. When selecting the pressing member 22, it is based on the fact that the edge of the hollowed-out part of the pressing member 22 can press the test sample.

[0051] Further, the contact surface between the edge of the pressing member 22 and the fixing base 21 can be provided with mutually cooperating convex and concave parts to limit the pressing member 22.

[0052] In an embodiment of the present utility model, the fixing mechanism 2 further includes two mutually cooperating magnetic attraction parts. One magnetic attraction part is arranged on the fixing base 21, and the other magnetic attraction part is arranged on the pressing member 22 so that the pressing member 22 and the fixing base 21 are magnetically fixed. By using the magnetic attraction method to fix the test sample, it is convenient for disassembly and can install pressing members 22 of different specifications to be compatible with various specifications of test samples.

[0053] Among them, there are various ways of cooperation of the magnetic attraction parts. They can be installed on the fixing base 21 and the pressing member 22 in an embedded manner, or the materials of the fixing base 21 and the pressing member 22 can be changed to make them cooperate with each other.

[0054] In the implementation manner of the magnetic attraction parts, the two magnetic attraction parts can be two magnets with opposite magnetic poles installed on the fixing base 21 in an embedded manner; or, in the fixing base 21 and the pressing member 22, at least a part of both is a magnetic material to form mutually cooperating magnetic attraction parts, or, in the fixing base 21 and the pressing member 22, at least a part of one is a magnetic material to form a second magnetic attraction part, and the other is installed with a first magnetic attraction part cooperating with it.

[0055] In an embodiment of the present utility model, the two magnetic attraction parts include a first magnetic attraction part and a second magnetic attraction part; a magnet 212 is arranged on the fixed seat 21, and the magnet 212 forms the first magnetic attraction part, and at least part of the pressing member 22 is made of a magnetic material to form the second magnetic attraction part.

[0056] Specifically, at least two grooves 211 are formed on the upper surface of the fixed seat 21, and each groove 211 corresponds to the edge of the pressing member 22 for placing the magnet 212. By forming the grooves 211 on the fixed seat 21 for installing the magnet 212 to form the first magnetic attraction part, and setting at least part of the pressing member 22 as a magnetic material to attract the first magnetic attraction part, the sample to be tested is fixed.

[0057] Furthermore, the height of the magnet 212 is less than the depth of the groove 211, and a concave part is formed after the magnet 212 is installed in the groove 211; a convex part protrudes from the corresponding position of the pressing member 22 for limiting the pressing member 22 during installation.

[0058] In an embodiment of the present utility model, there is an operating table for controlling the bonding mechanism 3 and the testing mechanism 4; the magnet 212 on the fixed seat 21 is an electromagnet 212 and is electrically connected to the control center; when the bonding mechanism 3 and the testing mechanism 4 are working, the control center controls the electromagnet 212 to be energized to make the pressing member 22 press the sample to be tested tightly.

[0059] Please refer to Figure 1 And Figure 5 , in an embodiment of the present utility model, the bonding mechanism 3 includes a tape installation structure 31 and a pressing head 32; the tape installation structure 31 is used to provide a tape extending horizontally; the pressing head 32 is located above the fixed seat 21, and the pressing head 32 is movably installed on the machine base 1 in the vertical direction to press the bonding surface of the tape against the testing surface of the sample to be tested. By providing a tape extending horizontally through the tape installation structure 31, and bonding the bonding surface of the tape to the testing surface of the sample to be tested through the pressing head 32 that moves up and down, the preparation work before the testing mechanism 4 performs peeling is realized.

[0060] In this embodiment, a support frame 321 and a lifting cylinder 323 are used to movably install the pressing head 32 on the machine base 1 in the vertical direction. After the lifting cylinder 323 extends to the action position and then retracts, the tape is attached to the testing surface fixed to the base and maintains a certain fixed angle with the horizontal plane of the base.

[0061] Further, a cylinder mounting seat 322 is provided on the support frame 321 for vertically movably mounting the lifting cylinder 323. When pressing down, the pressing height of the pressing head 32 can be adjusted through the cylinder mounting seat 322 or through the lifting cylinder 323. Ensure that when the pressing head 32 presses down, the adhesive tape is in full contact with the composite film, and at the same time prevent the adhesive tape from sticking to the pressing member 22, reducing the influence on the bonding strength test result.

[0062] Further, to enable the pressing head 32 to adapt to different specifications of samples to be tested, the pressing head 32 is detachably connected to the output end of the lifting cylinder 323. When replacing different pressing members 22 according to the samples to be tested, the corresponding pressing head 32 is replaced at the same time, so that the size of the pressing block is the same as the size of the hollow in the center of the pressing member 22.

[0063] Please refer to Figure 1 and Figure 3 , in an embodiment of the present utility model, the adhesive tape mounting structure 31 includes a glue supply base 311, a film roll mounting roller 312, a winding roller 313, and at least two guide rollers 314; the glue supply base 311 is mounted on the machine base 1; the film roll mounting roller 312 is mounted on the glue supply base 311 for mounting the roll material of the adhesive tape; the winding roller 313 and the film roll mounting roller 312 are arranged on the glue supply base 311 at a transverse interval for winding the adhesive tape; at least two guide rollers 314 are transversely spaced on the glue supply base 311 and are located between the film roll mounting roller 312 and the winding roller 313 for partial overlap of the adhesive tape. The film roll is tightened by the film roll mounting roller 312 and the winding roller 313. In the path where the film roll is tightened by the film roll mounting roller 312 and the winding roller 313, the two guide rollers 314 are for the overlap of the adhesive tape to tension the adhesive tape between the film roll mounting roller 312 and the winding roller 313, reducing the error caused by uneven adhesion of the adhesive tape, and making the adhesive surface of the adhesive tape parallel to the test surface of the sample to be tested, so that the bonding effect of the adhesive tape and the sample to be tested is closer each time.

[0064] Further, the two guide rollers 314 can be movably mounted on the glue supply base 311 in the transverse and vertical directions to adjust the tension degree of the adhesive tape, and at the same time can also adjust the position and angle of the adhesive surface of the adhesive tape.

[0065] Further, the lengths of the film roll mounting roller 312 and the winding roller 313 are 12 cm, and adhesive tapes of various widths can be installed.

[0066] Please refer to Figure 1 and Figure 4, in an embodiment of the present utility model, the adhesive tape mounting structure 31 further includes: a synchronous belt drive assembly 315 and a winding motor 316; the synchronous belt drive assembly 315 has a driving pulley 315A and a driven pulley 315B, and the driven pulley 315B is coaxially and fixedly connected to the winding roller 313; the winding motor 316 is mounted on the glue supply base 311 for driving the driving pulley 315A. The winding roller 313 is driven by the motor and the synchronous belt drive assembly 315 to tighten the adhesive tape, and the adhesive tape is recycled at the end of the test.

[0067] Specifically, the radius of the driving pulley 315A is smaller than the radius of the driven pulley 315B, so that the winding roller 313 winds slowly.

[0068] Please refer to Figure 1 And Figure 6 , in an embodiment of the present utility model, the testing mechanism 4 further includes a lead screw structure 41 and a testing motor 42; the lead screw structure 41 is mounted on the machine base 1 and has a laterally movable slider 412; the testing motor 42 is mounted on the machine base 1 and is connected to the lead screw 411 of the lead screw structure 41; the clamping member 45 is provided on the slider 412. Through the stable drive of the testing motor 42 and the lead screw structure 41, the accuracy of the movement of the slider 412 is improved, and the testing error is reduced.

[0069] Specifically, the testing motor 42 is a servo motor to overcome the problem of step loss of the stepping motor.

[0070] In an embodiment of the present utility model, the clamping member 45 is movably mounted on the slider 412 through an adjusting cylinder 43 that expands and contracts longitudinally to approach and clamp the adhesive tape.

[0071] Please refer to Figure 1 And Figure 7 , specifically, the output end of the adjusting cylinder 43 has a fixed bracket for mounting a force sensor 44, and the force receiving end of the force sensor 44 is provided with a clamping jaw, and the clamping jaw is the clamping member 45. Among them, the force sensor 44 is a pressure sensor or a tension sensor.

[0072] Further, the clamping jaw has two oppositely arranged claw parts, and the two claw parts approach each other to clamp the adhesive tape. Each claw part has two clamping surfaces. A tooth-like structure is provided on the first clamping surface to enhance the clamping stability of the clamping jaw, and the second clamping surface forms a groove to reduce the contact range between the clamping jaw and the adhesive tape during clamping.

[0073] During the test, the slider 412 is moved to the initial position. The initial position is the position where the adhesive tape can be ensured to be in the center of the clamping jaw after the adjusting cylinder 43 extends. Control the adjusting cylinder 43 to extend. After the adjusting cylinder 43 extends, the clamping jaw clamps the adhesive tape and moves horizontally to the right at a constant speed. The moving distance and speed of the clamping jaw can be set according to the length of the sample to be tested.

[0074] In an embodiment of the present utility model, there is an operating table, which is electrically connected to a winding motor 316, a lifting cylinder 323, a testing motor 42, and an adjusting cylinder 43 to control the experimental process. The operating table has a display screen to display the data obtained by a force sensor 44.

[0075] When performing the bonding force test, the test steps of an embodiment of the present utility model are as follows:

[0076] First step: The tester places the cut composite film in the center of the fixing seat 21, selects a pressing member 22 and a pressing head 32 that are suitable for the size of the composite film, uses the pressing member 22 to press the sample to be tested onto the fixing seat 21, and exposes the test surface;

[0077] Second step: The operating table controls the winding motor 316 to wind the adhesive tape by the winding roller 313 so that the bonding surface of the adhesive tape is aligned with the test surface;

[0078] Third step: The operating table controls the lifting cylinder 323 to move the pressing head 32 downward. After pressing the bonding surface of the adhesive tape against the test surface of the composite film, the operating table controls the lifting cylinder 323 to move the pressing head 32 to the position before pressing down;

[0079] Fourth step: The operating table controls the adjusting cylinder 43 to move the clamping jaw to the initial position, and then controls the clamping jaw to clamp the non-bonding surface of the adhesive tape;

[0080] Fifth step: The operating table controls the testing motor 42 to move the clamping jaw laterally to peel off the adhesive tape, and the force sensor measures the bonding force.

[0081] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A bonding strength testing device, characterized in that: include: Machine base; A fixing mechanism, arranged on the machine base, for fixing the sample to be tested and exposing its test surface; A bonding mechanism, disposed on the machine base, for providing adhesive tape with an adhesive surface and bonding the adhesive tape to the test surface of the sample to be tested on the fixing mechanism; and The testing mechanism comprises a clamping member and a force sensor. The clamping member can be movably installed on the base in the horizontal and longitudinal directions to clamp the adhesive tape and peel off the adhesive tape during the movement of the clamping member. The force sensor is located between the base and the clamping member to sense the force applied by the clamping member.

2. The bonding force testing device according to claim 1, characterized in that: The fixing mechanism comprises: A fixing seat, arranged on the machine base, for placing the sample to be tested; and The pressing member is detachably mounted on the fixing seat, and the middle portion of the pressing member is hollowed out to expose the test surface.

3. The bonding force testing device according to claim 2, characterized in that: The fixing mechanism also includes two magnetic attraction parts that cooperate with each other, wherein one of the magnetic attraction parts is arranged on the fixing seat, and the other of the magnetic attraction parts is arranged on the holding piece, so that the holding piece is magnetically fixed to the fixing seat.

4. The bonding force testing device according to claim 3, characterized in that: The two magnetic attraction parts include a first magnetic attraction part and a second magnetic attraction part; The fixing seat is provided with a magnet, and the magnet forms the first magnetic attraction portion. At least a portion of the pressing member is configured to be made of magnetic material to form the second magnetic attraction portion.

5. The bonding force testing device according to claim 4, characterized in that: The upper surface of the fixing seat is provided with at least two grooves. Each of the grooves is arranged corresponding to the edge of the pressing member to accommodate the magnet.

6. The bonding force testing device according to claim 1, characterized in that: The bonding mechanism comprises: An adhesive tape installation structure, used for providing adhesive tape extending in the transverse direction; and, The pressure head is located above the fixed seat and is movably installed on the machine base in the up-and-down direction to press the adhesive surface of the adhesive tape against the test surface of the sample to be tested.

7. The bonding force testing device according to claim 6, characterized in that: The adhesive tape installation structure comprises: A glue supply seat, mounted on the machine base; A film installation roller, installed on the adhesive supply seat, for installing the adhesive paper roll; A winding roller is arranged on the adhesive supply seat at a lateral interval with the adhesive installation roller, and is used for winding the adhesive paper; and At least two guide rollers are arranged on the glue supply seat at intervals in the transverse direction and are located between the film installation roller and the winding roller to provide partial overlap of the glue paper.

8. The bonding force testing device according to claim 7, characterized in that: The adhesive tape installation structure also includes: A synchronous belt transmission assembly, comprising a driving wheel and a driven wheel, wherein the driven wheel is coaxial with the winding roller and fixedly connected; and The winding motor is installed on the glue supply seat and is used to drive the driving wheel.

9. The bonding force testing device according to claim 1, characterized in that: The testing organization also includes: A lead screw structure, mounted on the machine base, having a sliding block that moves laterally; and A test motor is mounted on the machine base and connected to the lead screw of the lead screw structure; The clamping member is arranged on the sliding block.

10. The bonding force testing device according to claim 9, characterized in that: The clamping member is movably mounted on the sliding block via an adjusting cylinder that is telescopic in the longitudinal direction.

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