Peeling force testing tool and equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a stripping force testing tool and equipment. The stripping force testing tool comprises a rack, a force measuring assembly and a clamping assembly. The rack comprises bases and transverse plates, the bases and the transverse plates are distributed at intervals, and the transverse plates are used for being connected with a tensile machine; a plurality of groups of force measuring assemblies are arranged, and the plurality of groups of force measuring assemblies are arranged on the transverse plate; a plurality of groups of clamping assemblies are arranged, each group of clamping assembly comprises a first clamping piece and a second clamping piece, the second clamping pieces and the first clamping pieces are oppositely arranged in the distribution direction of the base and the transverse plate, the first clamping pieces are arranged on the base assembly, and the second clamping pieces are connected with the force measuring assemblies in a one-to-one mode. The stripping force test tool can clamp a plurality of test plates and the pole pieces to be tested fixed on the test plates at the same time, can test the stripping force of the plurality of pole pieces to be tested at the same time, improves the test efficiency, can test a plurality of pole pieces in the same scheme at the same time, reduces errors, and improves the test consistency of the plurality of pole pieces in the same scheme.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a peeling force testing tooling and equipment. Background Art

[0002] In the field of batteries, the bonding effect of the electrode sheet is an important index for evaluating the performance of the battery cell. In many cases, a poor bonding effect results in a very low peeling force, causing the powder on the electrode sheet to fall off and leading to poor performance of the electrode sheet. In the related art, the current method for testing the peeling force of the electrode sheet is as follows: fix the head of the electrode sheet on the test plate of the peeling force, fix the tail of the electrode sheet on the tensile testing machine, and use the tensile testing machine to pull the tail to obtain the peeling force value of the electrode sheet.

[0003] The current peeling force testing device can only test the peeling force of one electrode sheet at a time. In fact, due to many experimental schemes and at least three groups of electrode sheets being required for one scheme, the time spent on testing all the electrode sheets in all the schemes is relatively long, and the testing efficiency is low. On the other hand, the three groups of electrode sheets of the same scheme can only be tested separately, resulting in relatively large differences in the test data of the three groups of electrode sheets of the same scheme and poor consistency. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide a peeling force testing tooling and equipment, aiming to solve the technical problems of low testing efficiency and poor consistency of the peeling force testing device in the related art.

[0005] To achieve the above purpose, the technical solution adopted in the first aspect embodiment of this application is: a peeling force testing tooling, including a frame, a force measuring component, and a clamping component.

[0006] The frame includes a base and a cross plate, the base and the cross plate are spaced apart, and the cross plate is used to connect with the tensile testing machine; there are multiple groups of the force measuring components, and all the multiple groups of the force measuring components are arranged on the cross plate; there are multiple groups of the clamping components, each group of the clamping components includes a first clamping piece and a second clamping piece. In the distribution direction of the base and the cross plate, the second clamping piece is arranged opposite to the first clamping piece, and the first clamping piece is arranged on the base component, and the second clamping piece is connected to the force measuring component one by one.

[0007] The beneficial effects of the peeling force test tooling provided by this application are as follows: The first clamping member and the second clamping member in a set of clamping assemblies can respectively clamp the test board and the polar plate to be tested fixed on the test board. Since there are multiple sets of force measuring assemblies and clamping assemblies, and the second clamping member is connected to the force measuring assembly one by one, the peeling force test tooling in the first aspect embodiment of this application can clamp multiple test boards and the polar plates to be tested fixed on the test boards at the same time; and since multiple sets of force measuring assemblies are all arranged on the cross plate, when the tensile machine drives the cross plate to move, multiple force measuring assemblies can test the peeling forces of multiple polar plates to be tested at the same time, thereby improving the test efficiency, and can test multiple polar plates in the same scheme at the same time, reducing the test error, and improving the consistency of the tests of multiple polar plates in the same scheme.

[0008] In some embodiments, the force measuring assembly includes an elastic member and a tensile display. The tensile display is arranged on the cross plate, and two ends of the elastic member are respectively connected to the tensile display and the second clamping member.

[0009] In some embodiments, the elastic member is a spring.

[0010] In some embodiments, the first clamping member includes a first clamping plate, a second clamping plate and a first locking member. The first clamping plate and the second clamping plate are arranged at intervals on the base. The first locking member is movably arranged on the first clamping plate, and the first locking member can move relative to the first clamping plate to abut against the surface of the second clamping plate facing the first clamping plate.

[0011] In some embodiments, a first connection hole is provided on the first clamping plate. An inner thread is provided on the inner wall of the first connection hole, and an outer thread is provided on the outer side wall of the first locking member. The inner thread and the outer thread cooperate with each other.

[0012] In some embodiments, the first locking member includes a first main body portion and a first protruding portion connected to each other. In the radial direction of the first main body portion, the first protruding portion protrudes from the first main body portion, and the outer thread is provided on the first main body portion.

[0013] In some embodiments, the second clamping member includes a third clamping plate, a fourth clamping plate, a connecting plate and a second locking member. The third clamping plate and the fourth clamping plate are arranged at intervals on the connecting plate. The second locking member is movably arranged on the third clamping plate, and the second locking member can move relative to the third clamping plate to abut against the surface of the fourth clamping plate facing the third clamping plate. The connecting plate or the fourth clamping plate is connected to the force measuring assembly.

[0014] In some embodiments, a second connection hole is provided on the third clamping plate. A second internal thread is provided on the inner wall of the second connection hole, and a second external thread is provided on the outer side wall of the second locking member. The second internal thread and the second external thread cooperate with each other.

[0015] In some embodiments, the second locking member includes a second main body portion and a second protruding portion connected to each other. In the radial direction of the second main body portion, the second protruding portion protrudes from the second main body portion, and the second external thread is provided on the second main body portion.

[0016] To achieve the above object, the technical solution adopted in the second aspect embodiment of the present application is: a peel force testing device, including a tensile testing machine and the peel force testing tooling of the first aspect embodiment above.

[0017] The tensile testing machine is arranged on one side of the base. The driving end of the tensile testing machine is connected to the cross plate, and the tensile testing machine is used to drive the cross plate, the force measuring component and the second clamping member to move away from the base.

[0018] The beneficial effect of the peel force testing device provided by the present application is that: by applying the peel force testing tooling of the first aspect embodiment above to the peel force testing device, when the tensile testing machine drives the cross plate, the force measuring component and the second clamping member to move away from the base, multiple force measuring components can simultaneously test the peel forces of multiple pole pieces, thereby improving the testing efficiency, and can simultaneously test multiple pole pieces in the same scheme, reducing the testing error, and improving the consistency of the testing of multiple pole pieces in the same scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 is a schematic structural diagram of a pole piece peel force testing tooling in one embodiment of the present application;

[0021] Figure 2 is Figure 1 a schematic structural diagram when the clamping test plate and the pole piece of the pole piece peel force testing tooling shown in

[0022] Figure 3 is Figure 1 a schematic exploded view of the first clamping member in the pole piece peel force testing tooling shown in

[0023] Figure 4 Is Figure 1 The exploded structural schematic diagram of the second clamping member in the pole piece peeling force test tooling shown in the figure.

[0024] Reference numerals:

[0025] 11. Base; 12. Cross plate;

[0026] 2. Force measuring assembly; 21. Elastic member; 22. Tensile display;

[0027] 3. Clamping assembly; 31. First clamping member; 311. First clamping plate; 3111. First connecting hole; 312. Second clamping plate; 313. First locking member; 3131. First main body part; 3132. First protruding part; 32. Second clamping member; 321. Third clamping plate; 3211. Second connecting hole; 322. Fourth clamping plate; 323. Connecting plate; 324. Second locking member; 3241. Second main body part; 3242. Second protruding part;

[0028] 4. Pole piece to be tested;

[0029] 5. Test plate. Detailed implementation manners

[0030] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application 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 only used to explain the present application and are not used to limit the present application.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying 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 one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0033] References to "one embodiment", "some embodiments", or "an embodiment" in the specification of this application mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of this application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc., which appear in different places in this specification, do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. In addition, in one or more embodiments, specific features, structures, or characteristics may be combined in any suitable manner.

[0034] In the field of batteries, the bonding effect of the electrode sheet is an important indicator for evaluating whether the performance of the battery cell is excellent. In many cases, a poor bonding effect results in a very low peel force, causing the powder on the electrode sheet to fall off and leading to poor performance of the electrode sheet. In the related art, the current method for testing the peel force of the electrode sheet is as follows: fix the head of the electrode sheet on the test plate for peel force, fix the tail of the electrode sheet on the tensile testing machine, and use the tensile testing machine to pull the tail to obtain the peel force value of the electrode sheet.

[0035] The current peel force testing device can only test the peel force of one electrode sheet at a time. In fact, due to many experimental schemes and at least three groups of electrode sheets being required for one scheme, the time spent testing all the electrode sheets in all the schemes is relatively long, and the testing efficiency is low. On the other hand, the three groups of electrode sheets in the same scheme can only be tested separately, resulting in relatively large differences in the test data of the three groups of electrode sheets in the same scheme and poor consistency.

[0036] In view of the above problems, the embodiments of this application provide a peel force testing tooling and device, aiming to solve the technical problems of low testing efficiency and poor consistency of the peel force testing device in the related art.

[0037] In order to illustrate the technical solution of this application, the following will be described in conjunction with specific drawings and embodiments.

[0038] Please refer to Figure 1 , the embodiments of this application provide a peel force testing tooling, including a frame, a force measuring component 2, and a clamping component 3.

[0039] The frame includes a base 11 and a cross plate 12, which are spaced apart. The cross plate 12 is used to connect to the tensile testing machine; there are multiple groups of force measuring components 2, and all the multiple groups of force measuring components 2 are arranged on the cross plate 12; there are multiple groups of clamping components 3, and each group of clamping components 3 includes a first clamping member 31 and a second clamping member 32. In the distribution direction of the base 11 and the cross plate 12, the second clamping member 32 is arranged opposite to the first clamping member 31, and the first clamping member 31 is arranged on the base 11 component, and the second clamping member 32 is connected to the force measuring component 2 one-to-one.

[0040] In the peeling force test tooling provided by the present application, the first clamping member 31 and the second clamping member 32 in a set of clamping assemblies 3 can respectively clamp the test board 5 and the to-be-tested pole piece 4 fixed on the test board 5. Since there are multiple sets of both the force measuring assembly 2 and the clamping assembly 3, and the second clamping member 32 is connected to the force measuring assembly 2 one by one, the peeling force test tooling in the first aspect embodiment of the present application can clamp multiple test boards 5 and the to-be-tested pole pieces 4 fixed on the test boards 5 simultaneously; and since multiple sets of force measuring assemblies 2 are all arranged on the cross plate 12, when the cross plate 12 is driven to move by a tensile testing machine, multiple force measuring assemblies 2 can simultaneously test the peeling forces of multiple to-be-tested pole pieces 4, thereby improving the test efficiency, and can simultaneously test multiple pole pieces in the same scheme, reducing the test error, and improving the consistency of the tests of multiple pole pieces in the same scheme.

[0041] It should be noted that, please refer to Figure 2 for the method of testing the peeling force of a pole piece using the pole piece peeling force test tooling of the embodiment of the present application: Fix a to-be-tested pole piece 4 on the test board 5 using double-sided tape, then use the first clamping member 31 to clamp the free end of the test board 5, and use the second clamping member 32 to clamp the free end of the to-be-tested pole piece 4; repeat the above steps to respectively fix multiple to-be-tested pole pieces 4 on multiple sets of clamping assemblies 3; connect the cross plate 12 to the driving end of the tensile testing machine; adjust the parameters (pulling speed) of the tensile testing machine; start the tensile testing machine, and the tensile testing machine drives the cross plate 12, the force measuring assembly 2 and the first clamping member 31 to move, so that the to-be-tested pole piece 4 is slowly peeled off from the test board 5. During this process, the force measuring assembly 2 will display and record the peeling force curve for subsequent calculation, analysis and archiving.

[0042] It should be noted that, since the difficulty of peeling different to-be-tested pole pieces 4 from the test board 5 is different, when the free end of the to-be-tested pole piece 4 is pulled at a constant speed, the peeling forces of different to-be-tested pole pieces 4 when peeled off from the test board 5 will be different. However, in the peeling force test tooling of the embodiment of the present application, multiple second clamping members 32 are fixed on the same cross plate 12 by means of the force measuring assembly 2. Therefore, when the cross plate 12 is pulled at a constant speed, due to the different difficulty levels of peeling different to-be-tested pole pieces 4 from the test board 5, the displacements of the free ends of multiple to-be-tested pole pieces 4 will affect each other, resulting in relatively low accuracy of the measured peeling forces of multiple to-be-tested pole pieces 4.

[0043] To solve the above problems, please refer to Figure 1 and Figure 2 for some embodiments, the force measuring assembly 2 includes an elastic member 21 and a tensile force display 22. The tensile force display 22 is arranged on the cross plate 12, and both ends of the elastic member 21 are respectively connected to the tensile force display 22 and the second clamping member 32.

[0044] In the above embodiments, by adjusting the stretching degree of the elastic member 21, the pulling force applied to the test electrode sheet 4 can be adjusted. When the cross plate 12 is pulled at a constant speed, since the difficulty of peeling different test electrode sheets 4 from the test plate 5 is different, the stretching degree of the elastic member 21 is also different, so that different test electrode sheets 4 are subjected to different pulling forces, which can reduce the degree of mutual influence of multiple test electrode sheets 4, so as to improve the accuracy of the peeling force of multiple test electrode sheets 4 measured while achieving the effect of peeling multiple test electrode sheets 4 at the same speed.

[0045] It should be noted that when testing the peeling force of the electrode sheet, in order to improve the accuracy of the peeling force of the test electrode sheet 4 measured, it is necessary to ensure that the free end of the electrode sheet moves in a straight line at a constant speed. In the electrode sheet peeling force test tooling of the embodiment of the present application, the elastic member 21 is connected to the second clamping member 32. If the direction of the pulling force of the elastic member 21 on the second clamping member 32 is offset relative to the moving direction of the cross plate 12, the moving direction of the second clamping member 32 will also be offset relative to the moving direction of the cross plate 12, making the moving path of the free end of the test electrode sheet 4 unstable, resulting in low accuracy of the peeling force of the test electrode sheet 4 measured.

[0046] Please refer to Figure 1 and Figure 2 , in some embodiments, the elastic member 21 is a spring.

[0047] In the above embodiments, the spring can be stretched longitudinally, and the stretching direction of the spring is parallel to the distribution direction of the second clamping member 32 and the cross plate 12. Therefore, the direction of the pulling force of the elastic member 21 on the second clamping member 32 is parallel to the moving direction of the cross plate 12, and the moving direction of the second clamping member 32 will also be parallel to the moving direction of the cross plate 12, so as to stabilize the moving path of the free end of the test electrode sheet 4 and improve the accuracy of the peeling force of the test electrode sheet 4 measured.

[0048] Please refer to Figure 1 and Figure 4 , in some embodiments, the first clamping member 31 includes a first clamping plate 311, a second clamping plate 312 and a first locking member 313. The first clamping plate 311 and the second clamping plate 312 are arranged at intervals on the base 11, and the first locking member 313 is movably arranged on the first clamping plate 311, and the first locking member 313 can move relative to the first clamping plate 311 to abut against the surface of the second clamping plate 312 facing the first clamping plate 311.

[0049] In the above embodiments, when clamping the free end of the test plate 5, a part of the test plate 5 is arranged between the first clamping plate 311 and the second clamping plate 312, and then the first locking member 313 is moved relative to the first clamping plate 311 towards the second clamping plate 312 until the first locking member 313 abuts against the surface of the second clamping plate 312 facing the first clamping plate 311, so as to clamp the test plate 5 between the first locking member 313 and the second clamping plate 312.

[0050] It should be noted that in order to enable the first locking member 313 and the second clamping plate 312 to clamp the test plate 5, it is necessary to fix the position of the first locking member 313 after the first locking member 313 is moved relative to the first clamping plate 311 until it abuts against the surface of the second clamping plate 312 facing the first clamping plate 311.

[0051] In view of the above problems, please refer to Figure 4 , in some embodiments, a first connection hole 3111 is provided on the first clamping plate 311, a first internal thread (not shown in the figure) is provided on the inner wall of the first connection hole 3111, a first external thread (not shown in the figure) is provided on the outer side wall of the first locking member 313, and the first internal thread and the first external thread cooperate with each other.

[0052] In the above embodiments, the first locking member 313 is threadedly connected to the first connection hole 3111. When the first locking member 313 is rotated clockwise (or counterclockwise), the first locking member 313 can be made to approach the second clamping plate 312. When the first locking member 313 is rotated counterclockwise (or clockwise), the first locking member 313 can be made to move away from the second clamping plate 312. And the cooperation between the first internal thread and the first external thread can prevent the first locking member 313 from sliding relative to the first connection hole 3111 to fix the position of the first locking member 313.

[0053] Please refer to Figure 4 , in some embodiments, the first locking member 313 includes a first main body portion 3131 and a first protruding portion 3132 which are connected to each other. In the radial direction of the first main body portion 3131, the first protruding portion 3132 protrudes from the first main body portion 3131, and the first external thread is provided on the first main body portion 3131.

[0054] In the above embodiments, the first protruding portion 3132 is convenient for an operator to hold by hand or is convenient for an operator to clamp with a tool.

[0055] Please refer to Figure 1 and Figure 3, in some embodiments, the second clamping member 32 includes a third clamping plate 321, a fourth clamping plate 322, a connecting plate 323, and a second locking member 324. The third clamping plate 321 and the fourth clamping plate 322 are spaced apart on the connecting plate 323. The second locking member 324 is movably disposed on the third clamping plate 321, and the second locking member 324 can move relative to the third clamping plate 321 to abut against the surface of the fourth clamping plate 322 facing the third clamping plate 321. The connecting plate 323 or the fourth clamping plate 322 is connected to the force measuring assembly 2.

[0056] In the above embodiment, when clamping the free end of the to-be-tested electrode plate 4, part of the test plate 5 is disposed between the third clamping plate 321 and the fourth clamping plate 322, and then the second locking member 324 is moved relative to the third clamping plate 321 towards the fourth clamping plate 322 until the second locking member 324 abuts against the surface of the fourth clamping plate 322 facing the third clamping plate 321, so as to clamp the to-be-tested electrode plate 4 between the second locking member 324 and the fourth clamping plate 322.

[0057] It should be noted that in order to enable the second locking member 324 and the fourth clamping plate 322 to clamp the to-be-tested electrode plate 4, it is necessary to fix the position of the second locking member 324 after the second locking member 324 moves relative to the third clamping plate 321 to abut against the surface of the fourth clamping plate 322 facing the third clamping plate 321.

[0058] In view of the above problems, please refer to Figure 3 , in some embodiments, a second connection hole 3211 is provided on the third clamping plate 321. A second internal thread (not shown in the figure) is provided on the inner wall of the second connection hole 3211, and a second external thread (not shown in the figure) is provided on the outer side wall of the second locking member 324. The second internal thread and the second external thread cooperate with each other.

[0059] In the above embodiment, the second locking member 324 is threadedly connected to the second connection hole 3211. When the second locking member 324 is rotated clockwise (or counterclockwise), the second locking member 324 can be made to approach the fourth clamping plate 322. When the second locking member 324 is rotated counterclockwise (or clockwise), the second locking member 324 can be made to move away from the fourth clamping plate 322. And the cooperation between the second internal thread and the second external thread can prevent the second locking member 324 from sliding relative to the second connection hole 3211 to fix the position of the second locking member 324.

[0060] Please refer to Figure 3 , in some embodiments, the second locking member 324 includes a second main body portion 3241 and a second protruding portion 3242 connected to each other. In the radial direction of the second main body portion 3241, the second protruding portion 3242 protrudes from the second main body portion 3241, and the second external thread is provided on the second main body portion 3241.

[0061] In the above embodiment, the first protruding portion 3132 facilitates the operator to hold by hand or facilitates the operator to clamp with a tool.

[0062] To achieve the above object, the technical solution adopted in the second aspect embodiment of the present application is: a peel force testing device, including a tensile testing machine and the peel force testing tooling of the first aspect embodiment above.

[0063] The tensile testing machine is arranged on one side of the base 11, the driving end of the tensile testing machine is connected to the cross plate 12, and the tensile testing machine is used to drive the cross plate 12, the force measuring assembly 2 and the second clamping member 32 to move away from the base 11.

[0064] By applying the peel force testing tooling of the first aspect embodiment above to the peel force testing device, when the tensile testing machine drives the cross plate 12, the force measuring assembly 2 and the second clamping member 32 to move away from the base 11, multiple force measuring assemblies 2 can simultaneously test the peel forces of multiple pole pieces, thereby improving the testing efficiency, and can simultaneously test multiple pole pieces in the same scheme, reducing the testing error, and improving the consistency of the testing of multiple pole pieces in the same scheme.

[0065] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A peeling force testing tool, characterized in that: include: A frame, comprising a base and a transverse plate, wherein the base and the transverse plate are spaced apart, and the transverse plate is used to connect with the tensile machine; A force measuring assembly is provided in multiple groups, and the multiple groups of the force measuring assemblies are all arranged on the horizontal plate; The clamping assembly is provided with a plurality of groups, each group of the clamping assemblies comprises a first clamping member and a second clamping member, in the distribution direction of the base and the cross plate, the second clamping member is arranged opposite to the first clamping member, and the first clamping member is arranged on the base assembly, and the second clamping member is connected one-to-one with the force measuring assembly.

2. The peeling force testing tool according to claim 1, characterized in that: The force measuring assembly comprises an elastic member and a tension display, wherein the tension display is arranged on the transverse plate, and two ends of the elastic member are respectively connected to the tension display and the second clamping member.

3. The peeling force testing tool according to claim 2, characterized in that: The elastic member is a spring.

4. The peeling force testing tool according to any one of claims 1 to 3, characterized in that: The first clamping member includes a first clamping plate, a second clamping plate and a first locking member. The first clamping plate and the second clamping plate are arranged on the base at an interval. The first locking member is movably arranged on the first clamping plate, and the first locking member can move relative to the first clamping plate to abut against the surface of the second clamping plate facing the first clamping plate.

5. The peeling force testing tool according to claim 4, characterized in that: A first connecting hole is provided on the first clamping plate, a first internal thread is provided on the inner wall of the first connecting hole, a first external thread is provided on the outer wall of the first locking member, and the first internal thread cooperates with the first external thread.

6. The peeling force testing tool according to claim 5, characterized in that: The first locking member includes a first main body portion and a first protruding portion connected to each other. In the radial direction of the first main body portion, the first protruding portion protrudes from the first main body portion, and the first external thread is arranged on the first main body portion.

7. The peeling force testing tool according to any one of claims 1 to 3, characterized in that: The second clamping member includes a third clamping plate, a fourth clamping plate, a connecting plate and a second locking member. The third clamping plate and the fourth clamping plate are arranged on the connecting plate at intervals. The second locking member is movably arranged on the third clamping plate, and the second locking member can move relative to the third clamping plate to abut against the surface of the fourth clamping plate facing the third clamping plate. The connecting plate or the fourth clamping plate is connected to the force measuring assembly.

8. The peeling force testing tool according to claim 7, characterized in that: The third clamping plate is provided with a second connecting hole, the inner wall of the second connecting hole is provided with a second internal thread, the outer wall of the second locking member is provided with a second external thread, and the second internal thread and the second external thread cooperate with each other.

9. The peeling force testing tool according to claim 8, characterized in that: The second locking member includes a second main body portion and a second protruding portion connected to each other. In the radial direction of the second main body portion, the second protruding portion protrudes from the second main body portion, and the second external thread is disposed on the second main body portion.

10. A peeling force testing device, characterized in that: It comprises a tensile testing machine and the peeling force testing tool as described in any one of claims 1 to 9, wherein the tensile testing machine is arranged on one side of the base, the driving end of the tensile testing machine is connected to the cross plate, and the tensile testing machine is used to drive the cross plate, the force measuring assembly and the second clamping member to move in a direction away from the base.

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