Bonding strength testing structure

Abstract

The utility model relates to the technical field of bonding strength testing, and discloses a bonding strength testing structure, which comprises magnetic steel, one end of the connecting part is provided with a connecting groove, one end of the magnetic steel is clamped in the connecting groove, the other end of the magnetic steel is bonded with the other magnetic steel through glue, and the part, clamped in the connecting groove, of the magnetic steel is bonded through glue; the connecting rod is arranged at one end, away from the magnetic steel, of the connecting part; one end, far away from the magnetic steel, of the connecting rod is connected to the clamping part, and the clamping part is fixed on the device for the tensile test; a plurality of vertical side grooves are formed in the inner side wall of the connecting groove, each vertical side groove is communicated to the bottom of the connecting groove, a horizontal side groove is formed in the side wall of the bottom surface of the connecting groove, the horizontal side groove is communicated with each vertical side groove, and the vertical side grooves and the horizontal side groove are used for conveying warm water or warm air to soften cured glue. The bonding strength testing structure has the advantage that the magnetic steel bonded in the connecting part through glue can be quickly separated after the test is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of bonding strength testing, in particular to a bonding strength testing structure. Background Art

[0002] The bonding strength test tool is a device or apparatus used for bonding strength testing. It can be used to test the bonding strength between two objects bonded together by glue. The test method is to clamp the two objects bonded together on two devices that can apply tension, and by applying a fixed tension, measure the tension when the connection is disconnected, and obtain the bonding strength by analyzing the bonding area.

[0003] When testing the bonding strength, it is necessary to first accurately manufacture the size of the magnetic steel and obtain the size data of the magnetic steel bonding surface, so as to obtain the bonding area, which can be used for bonding strength tests of different types of glues and different magnetic steel materials. The glue connection surface of the two magnetic steels is the glue bonding strength test surface. The glue bonding strength test surface can be perpendicular to the stretching direction, parallel to the stretching direction, or have a certain angle. Since the size and shape of the magnetic steel are not fixed, the clamping device of the tensile test needs to have a high adaptability. Therefore, when testing the bonding strength of the magnetic steel, the magnetic steel will first be connected to the connecting part of the corresponding size, and then the connecting part will be clamped on the clamping part of the stretching device.

[0004] Through the above analysis, the following problems still exist in the prior art: how to adapt the fixture used for tensile testing to magnets of different sizes and shapes; how to separate the magnets after they are glued in the connection part. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a bonding strength testing structure, which has the advantages of installing the magnetic steel in the connecting part and then clamping it on a stretching device for testing, and the magnetic steel can be quickly separated after the test is completed after being bonded in the connecting part by glue, thereby solving the problem of difficulty in separating the magnetic steel from the connecting part.

[0007] (II) Technical solution

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A bonding strength testing structure, comprising:

[0010] magnetic steel;

[0011] A connecting part, one end of which is provided with a connecting groove, one end of the magnetic steel is stuck in the connecting groove, the other end of the magnetic steel is bonded to another magnetic steel by glue, and the part of the magnetic steel stuck in the connecting groove is bonded by glue;

[0012] A connecting rod, wherein the connecting portion is provided with a connecting rod at one end away from the magnetic steel;

[0013] A clamping part, one end of the connecting rod away from the magnetic steel is connected to the clamping part, and the clamping part is fixed on a device for tensile testing;

[0014] A plurality of vertical side grooves are arranged on the inner side wall of the connecting groove, each of which is connected to the bottom of the connecting groove. A horizontal side groove is arranged on the side wall of the bottom surface of the connecting groove, and the horizontal side grooves are connected to each of the vertical side grooves. The channel formed by the vertical side grooves and the horizontal side grooves is used to transport warm water or warm air to soften the solidified glue.

[0015] Preferably, a bottom hole is further provided on the bottom surface of the connecting groove, and a top block is provided on the end of the connecting rod. The top block is stuck in the bottom hole and slides up and down to eject the magnet from the connecting groove. A limit seat is provided below the bottom hole, and the limit seat limits the descending position of the top block. When the top block descends to the lowest position, the top surface of the top block is flush with the bottom surface of the connecting groove, so that the bottom surface of the connecting groove, the top surface of the top block and the end of the magnet are stably bonded together during stretching.

[0016] Preferably, the connecting rod and the clamping part are fixed by a pin in the middle, and the connecting rod and the clamping part are provided with a through hole. The pin is installed in the through hole to fix the connecting rod and the clamping part. The pin connection is simple and fast. The pin prevents displacement and rotation between the connecting rod and the clamping part, thereby improving the test accuracy.

[0017] Preferably, the connecting groove is too large for the magnet, and the gap between the magnet and the connecting groove is filled with glue. The area inside the connecting groove bonded to the magnet by glue is larger than the area at the two ends of the magnet bonded by glue. Therefore, after being subjected to force, the bonding test surface is detached first, thereby obtaining bonding strength data.

[0018] Preferably, the magnetic steel and the connecting groove are regular polygons, and each vertical side groove is located at the corner of the connecting groove. The regular polygon can make the glue bonding more uniform and stable, and the test accuracy is higher. Setting the vertical side grooves at the corners can make warm water or warm air better diffuse into the interior of the connecting groove.

[0019] Preferably, the top block is detachably mounted on the connecting rod.

[0020] Preferably, the inner surface of the connecting groove is sandblasted to improve the bonding strength between the inner surface of the connecting groove and the magnetic steel, so that the bonding test surface is detached first after being subjected to force.

[0021] Preferably, the device for tensile testing connected to the clamping portion is a universal tensile test press.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the utility model provides a bonding strength test structure, which has the following beneficial effects:

[0024] 1. The bonding strength test structure is to bond the magnet to the connection groove of the connection part through glue, and then connect the connection groove to the clamping part of the test tension through a connecting rod, so as to test the bonding strength of magnets of different areas and materials under different glues.

[0025] 2. In the bonding strength test structure, the vertical side grooves and horizontal side grooves in the connecting groove are distributed on each contact surface between the magnetic steel and the connecting groove. By conveying warm water or heating air in the channel formed by the vertical side grooves and the horizontal side grooves, the solidified glue in the connecting groove is softened, so as to facilitate the separation of the magnetic steel from the connecting part.

[0026] 3. The bonding strength test structure is provided with a bottom hole at the bottom of the connecting groove and a top block at the end of the connecting rod. The top block slides up and down in the bottom hole to push the magnet out of the connecting groove, so as to quickly detach the magnet from the connecting part after the test is completed.

[0027] 4. The bonding strength test structure is simple and fast in that the connecting rod and the clamping part are connected by a pin. The pin prevents displacement and rotation between the connecting rod and the clamping part, thereby improving the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the bonding strength testing structure of the utility model during testing.

[0029] Figure 2 It is a cross-sectional view of the bonding strength test structure of the utility model.

[0030] Figure 3 This is a schematic diagram of the structure of the utility model in which the magnetic steel is installed in the connecting part.

[0031] Figure 4 It is a schematic diagram of the internal structure of the connecting part of the utility model.

[0032] Figure 5 It is an isometric side sectional view of the connecting portion of the utility model.

[0033] In the figure: 100, magnetic steel; 200, connecting part; 210, connecting groove; 220, vertical side groove; 230, horizontal side groove; 240, bottom hole; 250, limit seat; 300, connecting rod; 310, through hole; 320, top block; 400, pin; 500, clamping part. DETAILED DESCRIPTION

[0034] 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.

[0035] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] Embodiment 1:

[0038] This embodiment provides a bonding strength testing structure having the following technical features.

[0039] See also Figure 1-5 A bonding strength test structure includes: a pair of magnets 100 of the same shape, the end faces of the two magnets are bonded together by glue, and the connection surface is the glue bonding strength test surface; a connecting part 200, one end of the connecting part 200 is provided with a connecting groove 210, one end of the magnet 100 is stuck in the connecting groove 210, and the other end of the magnet 100 is bonded to another magnet 100 by glue, and the part of the magnet 100 stuck in the connecting groove 210 is bonded by glue; a connecting rod 300, the end of the connecting part 200 away from the magnet 100 is provided with a connecting rod 3 00; a clamping portion 500, one end of the connecting rod 300 away from the magnetic steel 100 is connected to the clamping portion 500, and the clamping portion 500 is fixed on a device for tensile testing; a plurality of vertical side grooves 220 are arranged on the inner side wall of the connecting groove 210, each vertical side groove 220 is connected to the bottom of the connecting groove 210, and a horizontal side groove 230 is arranged on the side wall of the bottom surface of the connecting groove 210, and the horizontal side groove 230 is connected with each vertical side groove 220, and the channel formed by the vertical side groove 220 and the horizontal side groove 230 is used to transport warm water or warm air to soften the solidified glue.

[0040] According to the above technical solution, the bonding strength testing structure is to test the bonding strength of magnetic steels 100 of different areas and materials under different glues by bonding the magnetic steel 100 to the connecting groove 210 of the connecting part 200 through glue, and then connecting the connecting groove 210 to the clamping part 500 for testing tension through the connecting rod 300. At the same time, the vertical side grooves 220 and the horizontal side grooves 230 in the connecting groove 210 are distributed on each contact surface between the magnetic steel 100 and the connecting groove 210. By conveying warm water or heating in the channel formed by the vertical side grooves 220 and the horizontal side grooves 230, the solidified glue in the connecting groove 210 is softened, so that the magnetic steel 100 can be easily separated from the connecting part 200.

[0041] In an optional embodiment, if Figure 1-5 As shown, a bottom hole 240 is further provided on the bottom surface of the connecting groove 210, and a top block 320 is provided at the end of the connecting rod 300. The top block 320 is stuck in the bottom hole 240 and slides up and down to eject the magnetic steel 100 from the connecting groove 210. A limit seat 250 is provided below the bottom hole 240. The limit seat 250 limits the descending position of the top block 320. When the top block 320 descends to the lowest position, the top surface of the top block 320 is flush with the bottom surface of the connecting groove 210, so that the bottom surface of the connecting groove 210, the top surface of the top block 320 and the end of the magnetic steel 100 are stably bonded together during stretching.

[0042] It should be noted that the top block 320 is located at the center of the bottom surface of the through hole 310, and the top block 320 is cylindrical. The top block 320 and the inner wall of the bottom hole 240 fit tightly without any gap, so as to prevent the glue from bonding the top block 320 and the bottom hole 240 together.

[0043] According to the above technical solution, the bonding strength testing structure is configured by setting a bottom hole 240 at the bottom of the connecting groove 210 and a top block 320 at the end of the connecting rod 300. The top block 320 slides up and down in the bottom hole 240 to push the magnet 100 out of the connecting groove 210, so as to facilitate rapid separation of the magnet 100 from the connecting part 200 after the test is completed.

[0044] In an optional embodiment, if Figure 1-5 As shown, the connecting rod 300 and the clamping part 500 are fixed by a pin 400 , and a through hole 310 is provided on the connecting rod 300 and the clamping part 500 . The pin 400 is installed in the through hole 310 to fix the connecting rod 300 and the clamping part 500 .

[0045] It should be noted that both ends of the pin 400 are provided with limiting structures to prevent the pin 400 from falling out of the through hole 310, and the limiting structure at one end of the pin 400 is a detachable limiting structure, and the limiting structure at the other end is a fixed limiting structure, for example, a latch is provided at one end of the pin 400, and a convex rib is provided at the other end, and the convex rib is larger than the through hole 310.

[0046] According to the above technical solution, the bonding strength test structure is simple and fast in that the connecting rod 300 and the clamping part 500 are connected by the pin 400. The pin 400 prevents displacement and rotation between the connecting rod 300 and the clamping part 500, thereby improving the test accuracy.

[0047] In an optional embodiment, if Figure 1-5 As shown, the connection groove 210 is too large for the magnetic steel 100, and the gap between the magnetic steel 100 and the connection groove 210 is filled with glue. The area of ​​the connection groove 210 bonded to the magnetic steel 100 by glue is larger than the area of ​​the two ends of the magnetic steel 100 bonded by glue. Therefore, after being subjected to force, the bonding test surface is detached first, thereby obtaining the bonding strength data.

[0048] In an optional embodiment, the magnetic steel 100 and the connecting groove 210 are regular polygons, and each vertical side groove 220 is located at the corner of the connecting groove 210. The regular polygon can make the glue bonding more uniform and stable, and the test accuracy is higher. Setting the vertical side groove 220 at the corner can make warm water or warm air better diffuse into the interior of the connecting groove 210.

[0049] It should be noted that the cross section of the magnetic steel 100 is a square.

[0050] In an optional embodiment, if Figure 1-5 As shown, the top block 320 is detachably mounted on the connecting rod 300 .

[0051] It should be noted that the top block 320 is fixed to the connecting rod 300 by means of threads.

[0052] In an optional embodiment, if Figure 1-5 As shown, the inner surface of the connection groove 210 is sandblasted to improve the bonding strength between the inner surface of the connection groove 210 and the magnetic steel 100, so that the bonding test surface is detached first after being subjected to force.

[0053] In an optional embodiment, if Figure 1-5 As shown, the device for tensile testing connected to the clamping portion 500 is a universal tensile testing press.

[0054] Working principle: according to the data to be tested, the magnetic steel material is rotated, the magnetic steel size is accurately manufactured, the magnetic steel bonding surface size data is obtained, so as to obtain the bonding area, and then the glue to be tested is selected, and the magnetic steel 100 is fixed in the connecting groove 210 with glue. After curing, the two ends of the magnetic steel 100 are fixed together with glue. After curing, the connection parts 200 fixed on the two magnetic steels 100 are connected to the clamping part 500 through the connecting rod 300, and the clamping part 500 and the connecting rod 300 are fixed by the pin 400. The two clamping parts 500 are fixed on the tensile test device, and the universal tensile test press is connected to the clamping part 500. After setting the process parameters, a tensile test is carried out, and a tensile test curve is formed by automatic conversion of tension / bonding area, so as to obtain the bonding strength data; after completing the test, warm water or heating is injected into the vertical side groove 220 to soften the glue, and then the magnetic steel 100 is ejected from the connecting groove 210 by the top block 320 to complete the separation operation.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bonding strength test structure, characterized in that: include: Magnetic steel (100); A connecting portion (200), wherein one end of the connecting portion (200) is provided with a connecting groove (210), one end of the magnetic steel (100) is stuck in the connecting groove (210), the other end of the magnetic steel (100) is bonded to another magnetic steel (100) by glue, and the portion of the magnetic steel (100) stuck in the connecting groove (210) is bonded by glue; A connecting rod (300), wherein the connecting portion (200) is provided with a connecting rod (300) at one end away from the magnetic steel (100); A clamping portion (500), one end of the connecting rod (300) away from the magnetic steel (100) being connected to the clamping portion (500), and the clamping portion (500) being connected to a device for tensile testing; A plurality of vertical side grooves (220) are arranged on the inner side wall of the connecting groove (210), each of the vertical side grooves (220) being connected to the bottom of the connecting groove (210), and a horizontal side groove (230) is arranged on the side wall of the bottom surface of the connecting groove (210), the horizontal side groove (230) being connected to each of the vertical side grooves (220), and the channel formed by the vertical side grooves (220) and the horizontal side grooves (230) is used to transport warm water or warm air to soften the solidified glue.

2. A bonding strength testing structure according to claim 1, characterized in that: The bottom surface of the connecting groove (210) is also provided with a bottom hole (240), and the end of the connecting rod (300) is provided with a top block (320). The top block (320) is stuck in the bottom hole (240) and slides up and down, and is used to eject the magnetic steel (100) from the connecting groove (210). A limit seat (250) is provided below the bottom hole (240), and the limit seat (250) limits the descending position of the top block (320). When the top block (320) descends to the lowest position, the top surface of the top block (320) is flush with the bottom surface of the connecting groove (210).

3. A bonding strength testing structure according to claim 1, characterized in that: The connecting rod (300) and the clamping portion (500) are fixed in the middle by a pin (400), and a through hole (310) is provided on the connecting rod (300) and the clamping portion (500), and the pin (400) is installed in the through hole (310) to fix the connecting rod (300) and the clamping portion (500).

4. A bonding strength testing structure according to claim 1, characterized in that: The connection groove (210) is excessively large in the magnetic steel (100), the gap between the magnetic steel (100) and the connection groove (210) is filled with glue, and the area of ​​the connection groove (210) bonded to the magnetic steel (100) by glue is larger than the area of ​​the two ends of the magnetic steel (100) bonded by glue.

5. The bonding strength testing structure according to claim 1, characterized in that: The magnetic steel (100) and the connecting groove (210) are regular polygons, and each vertical side groove (220) is located at a corner of the connecting groove (210).

6. A bonding strength testing structure according to claim 2, characterized in that: The top block (320) is detachably mounted on the connecting rod (300).

7. The bonding strength testing structure according to claim 1, characterized in that: The inner surface of the connecting groove (210) is processed by sandblasting.

8. The bonding strength testing structure according to claim 1, characterized in that: The device for tensile testing connected to the clamping portion (500) is a universal tensile testing machine.

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