Butt joint bonding tensile strength tester

Abstract

The utility model relates to a butt joint bonding tensile strength tester. Comprising a test board, a first base arranged on the test board, a second base arranged on the test board and connected with the test board in a sliding mode, two clamping type fixing sleeves arranged on the first base and the second base respectively, and axial adjusters arranged on the clamping type fixing sleeves. The spherical cavity is arranged in the axial adjuster; and the driver is arranged on the test board, is connected with the second base and is used for driving the second base to slide on the test board. According to the butt joint bonding tensile strength tester provided by the invention, autonomous adjustment can be carried out in the straightening process of a tested part, so that the tested bonding part only bears tensile force, and the obtained test result is more accurate.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of testing equipment, in particular to a butt joint bonding tensile strength tester. BACKGROUND

[0002] The butt joint bonding tensile strength test is a standardized experimental method for evaluating the damage resistance of an adhesive or a bonding joint under the action of vertical tensile force. The core is to quantify the strength performance of the bonding interface by simulating the mechanical behavior of the material under tension.

[0003] The principle of the test is to apply axial tensile force to the bonding sample by a tensile testing machine until the adhesive layer or the interface is broken, and then record the failure load and calculate the strength value. The test needs to ensure that the load axis coincides with the sample axis to avoid stress concentration caused by eccentric loading.

[0004] The actual test scene is mostly in the field, and the straightness of the two test objects cannot meet the requirements due to the actual influencing factors in the field, which leads to the fact that the test result cannot truly reflect the tensile strength of the bonding part. CONTENT OF THE INVENTION

[0005] The application provides a butt joint bonding tensile strength tester, which can be automatically adjusted during the straightening process of the test object, so that the bonding part of the test object only bears tensile force, so that the test result is more accurate.

[0006] The above object of the application is achieved by the following technical scheme:

[0007] The application provides a butt joint bonding tensile strength tester, which comprises:

[0008] a test table;

[0009] a first base provided on the test table;

[0010] a second base provided on the test table and in sliding connection with the test table;

[0011] two clamping fixing sleeves respectively provided on the first base and the second base;

[0012] an axial adjuster provided on the clamping fixing sleeve, and a spherical cavity is arranged in the axial adjuster;

[0013] a driver provided on the test table and connected with the second base, and the driver is used to drive the second base to slide on the test table.

[0014] In a possible implementation manner of the application, the first base comprises:

[0015] a first fixing member provided on the test table;

[0016] The first cover plate is detachably fixedly connected with the first fixing member.

[0017] The first spherical cavity includes a first half cavity arranged on the first fixing member and a second half cavity arranged on the first cover plate.

[0018] In a possible implementation of the present application, the second base includes:

[0019] The second fixing member is arranged on the test bench.

[0020] The second cover plate is detachably fixedly connected with the second fixing member.

[0021] The second spherical cavity includes a third half cavity arranged on the second fixing member and a fourth half cavity arranged on the second cover plate.

[0022] In a possible implementation of the present application, the axial adjuster includes:

[0023] The spherical connecting body;

[0024] The fixed channel is arranged on the spherical connecting body, and two ends of the fixed channel are in communication with the surface of the spherical connecting body.

[0025] The fixing member is arranged inside the spherical connecting body, and the fixing member can extend into the fixed channel.

[0026] The spherical connecting body is used to be placed inside the spherical cavity.

[0027] In a possible implementation of the present application, the inner diameter of the spherical connecting body is smaller than the inner diameter of the spherical cavity.

[0028] In a possible implementation of the present application, the difference between the inner diameter of the spherical connecting body and the inner diameter of the spherical cavity is 0.2-0.3 mm.

[0029] In a possible implementation of the present application, the spherical cavity includes a spherical surface part and a curved surface part, and the radius of curvature of the curved surface part is greater than the radius of curvature of the spherical surface part.

[0030] The through hole is arranged on the curved surface part, and the axis of the through hole passes through the spherical center of the spherical surface part and the spherical center of the curved surface part.

[0031] In a possible implementation of the present application, the connection between the spherical surface part and the curved surface part is smoothly transitioned. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structural schematic diagram of a butt joint adhesive tensile strength tester provided by the present application.

[0033] Figure 2 is a structural schematic diagram of a first base provided by the present application.

[0034] Figure 3 is a structural schematic diagram of a second base provided by the present application.

[0035] Figure 4 is a partial structural schematic diagram of a spherical cavity provided by the present application.

[0036] In the figure, 1 is a test bench, 2 is a first base, 3 is a second base, 4 is a clamping fixing sleeve, 5 is an axial adjuster, 6 is a driver, 21 is a first fixing member, 22 is a first cover plate, 23 is a first spherical cavity, 31 is a second fixing member, 32 is a second cover plate, 33 is a second spherical cavity, 51 is a spherical cavity, 52 is a spherical connecting body, 53 is a fixing channel, 54 is a fixing member, 511 is a spherical surface part, 512 is a curved surface part, and 513 is a through hole. DETAILED DESCRIPTION

[0037] The technical solutions in the present application will be described in further detail below with reference to the accompanying drawings.

[0038] The present application discloses a butt joint adhesive tensile strength tester. In some examples, the butt joint adhesive tensile strength tester provided by the present application comprises a test bench 1, a first base 2, a second base 3, a clamping fixing sleeve 4, an axial adjuster 5, and a driver 6. The first base 2 is installed on the test bench 1 and is generally fixed by using bolts.

[0039] Please refer to Figure 1 The second base 3 is connected to the test bench 1 in a sliding manner and can slide towards or away from the first base 2. The power for the sliding of the second base 3 is provided by the driver 6. The driver 6 is installed on the test bench 1 and connected to the second base 3. The connection between the two is also fixed by using bolts.

[0040] In some possible implementations, the driver 6 uses a linear motor or a linear extender driven by a motor. The driver 6 is connected to a commercial power supply by a plug or connected to a power source. The driver 6 is equipped with a switch and a reverser to realize the bidirectional movement of the second base 3.

[0041] The first base 2 and the second base 3 are respectively provided with a clamping fixing sleeve 4. Please refer to Figure 2 The axial adjuster 5 is arranged on the clamping fixing sleeve 4. Here, the clamping fixing sleeve 4 can be regarded as a transition between the axial adjuster 5 and the first base 2 and the second base 3.

[0042] The axial adjuster 5 is internally provided with a spherical cavity 51. The spherical cavity 51 can enable the clamping fixing sleeve 4 to self-adjust when fixing and tensioning the test objects, so as to make the connection between the two test objects only bear the tension.

[0043] Specifically, the pieces that need to be fixed by the clamping fixing sleeve 4 are called test pieces, which can be steel bars, etc. The test ends of two test pieces are coated with adhesive and left to stand, and the test pieces are obtained. After the adhesive is completely solidified, the test is started.

[0044] First, the first end of the test piece is fixed using the first clamping fixing sleeve 4, then the first clamping fixing sleeve 4 is placed on the first base 2, then the second clamping fixing sleeve 4 is placed on the second base 3, and the second end of the test piece is inserted into the second clamping fixing sleeve 4, the second end of the test piece is fixed again, and finally the first base 2 and the second base 3 are fixed with the corresponding clamping fixing sleeve 4.

[0045] At this point, the preparation work is completed, and finally the driver 6 is started to move the first base 2 and the second base 3 away from each other. There are two results here, the first is that the test piece is pulled apart at the test limit, and the second is that the test piece is not pulled apart at the test limit after reaching the set tension.

[0046] In some examples, please refer to Figure 2 , the first base 2 includes a first fixing piece 21 and a first cover plate 22, and the first fixing piece 21 and the first cover plate 22 are connected by bolting or inserting. The first spherical cavity 23 is divided into two parts, which are a first half cavity located on the first fixing piece 21 and a second half cavity located on the first cover plate 22.

[0047] In some examples, please refer to Figure 3 , the second base 3 includes a second fixing piece 31 and a second cover plate 32, and the second fixing piece 31 and the second cover plate 32 are connected by bolting or inserting. The second spherical cavity 33 is divided into two parts, which are a third half cavity located on the second fixing piece 31 and a fourth half cavity located on the second cover plate 32.

[0048] The spherical cavity 51 refers to the first spherical cavity 23 and the second spherical cavity 33.

[0049] In some examples, please refer to Figure 2 and Figure 3 , the axial adjuster 5 includes a spherical connector 52, a fixed channel 53, and a fixing piece 54. The fixed channel 53 is located inside the spherical connector 52, and both ends of the fixed channel 53 are in communication with the surface of the spherical connector 52.

[0050] The fixing piece 54 is also located inside the spherical connector 52, and the fixing piece 54 can extend into the fixed channel 53. The fixing piece 54 is generally a bolt.

[0051] In addition, the number of the fixing members 54 is generally three or four and is arranged around the fixing channel 53.

[0052] The spherical connector 52 is arranged inside the spherical cavity 51, and the inner diameter of the spherical connector 52 is required to be smaller than the inner diameter of the spherical cavity 51, and the gap between them is controlled to be 0.2-0.3mm.

[0053] In some examples, referring to Figure 4 The spherical cavity 51 includes a spherical surface part 511 and a curved surface part 512, and the curvature radius of the curved surface part 512 is required to be larger than that of the spherical surface part 511, and the connection between the spherical surface part 511 and the curved surface part 512 is required to be smooth.

[0054] The structure allows the spherical connector 52 to swing, so as to realize slight swing during the test

[0055] The curved surface part 512 is provided with a through hole 513, the axis of the through hole 513 passes through the center of the spherical surface part 511 and the center of the curved surface part 512, the through hole 513 is used for the subject to pass through, and the inner diameter of the through hole 513 is generally required to be larger than the inner diameter of the subject by 2-3mm.

[0056] The embodiments of the specific embodiment are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A butt-bond tensile strength tester characterized by, The utility model relates to a test bench, which comprises the following: a test bench (1); a first base (2) arranged on the test bench (1); a second base (3) arranged on the test bench (1) and in sliding connection with the test bench (1); two clamping fixing sleeves (4) arranged on the first base (2) and the second base (3) respectively; an axial adjuster (5) arranged on the clamping fixing sleeve (4), the axial adjuster (5) being internally provided with a spherical cavity (51); a driver (6) arranged on the test bench (1) and connected with the second base (3), the driver (6) being used to drive the second base (3) to slide on the test bench (1).

2. The butt adhesion tensile strength tester of claim 1, wherein, The first base (2) comprises: a first fixing member (21) arranged on the test bench (1); a first cover plate (22) in detachable fixed connection with the first fixing member (21); a first spherical cavity (23) comprising a first half cavity arranged on the first fixing member (21) and a second half cavity arranged on the first cover plate (22).

3. The butt adhesion tensile strength tester of claim 1 or 2, wherein The second base (3) comprises: a second fixing member (31) arranged on the test bench (1); a second cover plate (32) in detachable fixed connection with the second fixing member (31); a second spherical cavity (33) comprising a third half cavity arranged on the second fixing member (31) and a fourth half cavity arranged on the second cover plate (32).

4. The butt adhesion tensile strength tester of claim 1, wherein, The axial adjuster (5) comprises: a spherical connecting body (52); a fixed channel (53) arranged on the spherical connecting body (52), both ends of the fixed channel (53) being in communication with the surface of the spherical connecting body (52); a fixing member (54) arranged in the interior of the spherical connecting body (52), the fixing member (54) being capable of extending into the fixed channel (53); wherein the spherical connecting body (52) is used to be placed in the interior of the spherical cavity (51).

5. The butt adhesion tensile strength tester of claim 4, wherein, The inner diameter of the spherical connecting body (52) is smaller than the inner diameter of the spherical cavity (51).

6. The butt adhesion tensile strength tester of claim 5, wherein, The difference between the inner diameter of the spherical connecting body (52) and the inner diameter of the spherical cavity (51) is 0.2-0.3 mm.

7. The butt adhesion tensile strength tester of claim 1, wherein, The spherical cavity (51) comprises a spherical surface part (511) and a curved surface part (512), the radius of curvature of the curved surface part (512) being greater than the radius of curvature of the spherical surface part (511); a through hole (513) is arranged on the curved surface part (512), the axis of the through hole (513) passing through the spherical center of the spherical surface part (511) and the spherical center of the curved surface part (512).

8. The butt adhesion tensile strength tester of claim 1, wherein, The connection between the spherical surface part (511) and the curved surface part (512) is smoothly transitioned.

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