Sample preparation device for testing adhesive strength of rubber adhesive

Abstract

The utility model discloses a sample preparation device for testing the adhesive strength of a rubber adhesive, and relates to the technical field of adhesive determination. A plurality of first samples; the first positioning plate is arranged above the rubber sheet, and the multiple first samples are detachably connected to the first positioning plate; the plurality of second samples are arranged in one-to-one correspondence with the plurality of first samples; the second positioning plate is arranged below the rubber sheet, and the plurality of second samples are detachably connected to the second positioning plate; the pressing assembly is used for driving the first positioning plate and the second positioning plate to get close to each other, so that the lower ends of the multiple first samples can abut against the upper surface of the rubber sheet, and the upper ends of the multiple second samples can abut against the lower surface of the rubber sheet. The sample preparation device for testing the adhesive strength of the rubber adhesive can discharge air in the rubber adhesive, and is beneficial to improving the detection precision of an adhesive strength testing machine.

Description

Technical Field

[0001] The utility model relates to the technical field of adhesive determination, in particular to a sample preparation device for rubber adhesive bonding strength test. Background Art

[0002] The rubber adhesive bonding strength tester is a device used to evaluate the bonding strength between rubber products and other materials (such as metal, plastic, etc.). Before the rubber adhesive is subjected to a bonding strength test, it is necessary to prepare a sample of the rubber adhesive to be tested. In the prior art, a sample preparation device is often used to prepare a sample of the rubber adhesive. The sample preparation device includes a sample and a rubber sheet. The operator first applies the rubber adhesive to be tested on the sample, and then sticks the sample on the rubber sheet. After the rubber adhesive is cured, the sample and the rubber sheet are sent to the bonding strength tester for bonding strength testing. In the process of sticking the sample on the rubber sheet, due to improper operation of the operator, the sample is prone to uneven force, resulting in the rubber adhesive between the sample and the rubber sheet being easily mixed with air, which in turn makes the bonding strength measured by the bonding strength tester low, reducing the detection accuracy of the bonding strength tester. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a sample preparation device for rubber adhesive bonding strength test, which is beneficial to improving the detection accuracy of the bonding strength tester.

[0004] The sample preparation device for rubber adhesive bonding strength test according to the embodiment of the utility model comprises:

[0005] Rubber sheets;

[0006] A plurality of first samples, wherein the lower ends of the plurality of first samples are bonded to the upper surface of the rubber sheet by a rubber adhesive, and the upper ends of the plurality of first samples are connected to the output end of the bonding strength tester;

[0007] a first positioning plate, the first positioning plate being arranged above the rubber sheet, and a plurality of the first specimens being detachably connected to the first positioning plate;

[0008] A plurality of second samples, wherein the plurality of second samples are arranged in one-to-one correspondence with the plurality of first samples, the upper ends of the plurality of second samples are all used to be bonded to the lower surface of the rubber sheet through the rubber adhesive, and the lower ends of the plurality of second samples are all used to be connected to the output end of the bonding strength tester;

[0009] a second positioning plate, the second positioning plate being arranged below the rubber sheet, and a plurality of the second specimens being detachably connected to the second positioning plate;

[0010] A clamping assembly, wherein the first positioning plate and the second positioning plate are connected by the clamping assembly, and the clamping assembly is used to drive the first positioning plate and the second positioning plate to approach each other, so that the lower ends of the plurality of first specimens can be pressed against the upper surface of the rubber sheet, and the upper ends of the plurality of second specimens can be pressed against the lower surface of the rubber sheet.

[0011] At least the following beneficial effects:

[0012] When the adhesive strength of the rubber adhesive needs to be tested, the operator can install multiple first samples on the first positioning plate and multiple second samples on the second positioning plate, and then the operator applies the rubber adhesive to be tested on the lower ends of the multiple first samples and the upper ends of the multiple second samples. After the rubber adhesive is applied, the operator operates the clamping assembly, under the action of the clamping assembly, the first positioning plate and the second positioning plate are close to each other, the first positioning plate drives the multiple first samples to descend, and the second positioning plate drives the multiple second samples to rise, so that the lower ends of the multiple first samples can be pressed against the upper surface of the rubber sheet, and the upper ends of the multiple second samples can be pressed against the lower surface of the rubber sheet. After the rubber adhesive is cured, the operator loads the rubber sheet, the first positioning plate, the second positioning plate, the first samples and the second samples into the bonding strength tester, so that the upper ends of the first samples are connected to the output end of the bonding strength tester, and the lower ends of the second samples are connected to the output end of the bonding strength tester. The output end of the bonding strength tester pulls the first samples and the second samples at the same time, and the bonding strength of the current rubber adhesive can be measured. Under the continuous pressing force of the clamping assembly, the first samples and the upper surface of the rubber sheet can maintain a stable and uniform pressure, and the second samples and the lower surface of the rubber sheet can maintain a stable and uniform pressure, which not only discharges the air in the rubber adhesive between the first samples and the rubber sheet, but also discharges the air in the rubber adhesive between the second samples and the rubber sheet, avoiding air from entering the rubber adhesive between the first samples and the rubber sheet, and also avoiding air from entering the rubber adhesive between the second samples and the rubber sheet, which is beneficial to improve the detection accuracy of the bonding strength tester.

[0013] According to the sample preparation device for rubber adhesive bonding strength test of the embodiment of the utility model, the clamping assembly includes multiple bolts and multiple nuts, the first positioning plate is provided with multiple first through holes, the second positioning plate is provided with multiple second through holes, the rubber sheet is provided with multiple third through holes, the multiple second through holes are arranged one-to-one with the multiple first through holes, the multiple third through holes are arranged one-to-one with the multiple first through holes, the multiple bolts are respectively passed through the multiple first through holes, the multiple second through holes and the multiple third through holes, the multiple nuts are threadedly connected with the multiple bolts, the nuts of the multiple bolts can all abut against the second positioning plate, and the multiple nuts can all abut against the first positioning plate, so that the first positioning plate and the second positioning plate can be close to each other.

[0014] According to the sample preparation device for rubber adhesive bonding strength test of the embodiment of the utility model, the clamping assembly also includes a plurality of elastic washers, and the plurality of nuts are respectively abutted against the first positioning plate through the plurality of elastic washers.

[0015] According to the sample preparation device for rubber adhesive bonding strength test of the embodiment of the utility model, the number of the first through holes is consistent with the number of the first specimens, a plurality of the first through holes are arranged in a circular array on the first positioning plate, a plurality of the first specimens are arranged in a circular array on the first positioning plate, the center of the circular array of the plurality of the first through holes is the same as the center of the cylindrical array of the plurality of the first specimens, and the plurality of the first specimens are respectively arranged between two adjacent first through holes.

[0016] According to the sample preparation device for rubber adhesive bonding strength test of the embodiment of the utility model, the first sample includes a first bonding joint and a first connecting column, the diameter of the first bonding joint is larger than the diameter of the first connecting column, the lower end of the first connecting column is connected to the upper end of the first bonding joint, the upper end of the first connecting column is used to be connected to the output end of the bonding strength tester, the lower end of the first bonding joint is used to be bonded to the upper surface of the rubber sheet through the rubber adhesive, a plurality of first positioning holes consistent with the number of the first through holes are opened on the first positioning plate, a plurality of first positioning holes are arranged in a circular array on the first positioning plate, the center of the circular array of the plurality of first positioning holes is the same as the center of the cylindrical array of the plurality of first through holes, the plurality of first positioning holes are respectively arranged between two adjacent first through holes, and the plurality of first connecting columns are respectively penetrated into the plurality of first positioning holes, so that the plurality of first bonding joints can abut against the first positioning plate.

[0017] According to the sample preparation device for rubber adhesive bonding strength test of the embodiment of the utility model, a first pin hole is opened on the outer wall of the upper end of the first connecting column.

[0018] According to the sample preparation device for rubber adhesive bonding strength test of the embodiment of the utility model, the number of the second through holes is consistent with the number of the second specimens, a plurality of the second through holes are arranged in a circular array on the second positioning plate, a plurality of the second specimens are arranged in a circular array on the second positioning plate, the center of the circular array of the plurality of the second through holes is the same as the center of the cylindrical array of the plurality of the second specimens, and the plurality of the second specimens are respectively arranged between two adjacent second through holes.

[0019] According to the sample preparation device for rubber adhesive bonding strength test of the embodiment of the utility model, the second sample includes a second bonding head and a second connecting column, the diameter of the second bonding head is larger than the diameter of the second connecting column, the upper end of the second connecting column is connected to the lower end of the second bonding head, the lower end of the second connecting column is used to be connected to the output end of the bonding strength tester, the upper end of the second bonding head is used to be bonded to the lower surface of the rubber sheet through the rubber adhesive, a plurality of second positioning holes consistent with the number of the second through holes are opened on the second positioning plate, a plurality of second positioning holes are arranged in a circular array on the second positioning plate, the center of the circular array of the plurality of second positioning holes is the same as the center of the cylindrical array of the plurality of second through holes, the plurality of second positioning holes are respectively arranged between two adjacent second through holes, and the plurality of second connecting columns are respectively penetrated into the plurality of second positioning holes so that the plurality of second bonding heads can abut against the second positioning plate.

[0020] According to the sample preparation device for rubber adhesive bonding strength test of the embodiment of the utility model, a second pin hole is opened on the outer wall of the lower end of the second connecting column.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic structural diagram of a sample preparation device for rubber adhesive bonding strength test according to an embodiment of the utility model;

[0024] Figure 2 This is a structural schematic diagram of a first positioning plate in a sample preparation device for rubber adhesive bonding strength test according to an embodiment of the utility model;

[0025] Figure 3 This is a schematic structural diagram of a first sample in a sample preparation device for rubber adhesive bonding strength test according to an embodiment of the utility model;

[0026] Figure 4It is a partial cross-sectional structural schematic diagram of a sample preparation device for rubber adhesive bonding strength test according to an embodiment of the utility model;

[0027] Reference numerals:

[0028] First positioning plate 100; first through hole 110; first positioning hole 120;

[0029] First sample 200; first bonding joint 210; first connecting column 220; first pin hole 221;

[0030] Second positioning plate 300; second through hole 310; second positioning hole 320;

[0031] A second sample 400; a second bonding joint 410; a second connecting column 420; a second pin hole 421;

[0032] Rubber sheet 500; third through hole 510;

[0033] Clamping assembly 600; bolt 610; nut 620. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships 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 the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0039] refer to Figures 1 to 3 The sample preparation device for rubber adhesive bonding strength test of the utility model comprises:

[0040] Rubber sheet 500;

[0041] A plurality of first samples 200, wherein the lower ends of the plurality of first samples 200 are all used to be bonded to the upper surface of the rubber sheet 500 by means of a rubber adhesive, and the upper ends of the plurality of first samples 200 are all used to be connected to the output end of the bonding strength tester;

[0042] A first positioning plate 100, which is disposed above the rubber sheet 500, and a plurality of first test specimens 200 are detachably connected to the first positioning plate 100;

[0043] A plurality of second samples 400, the plurality of second samples 400 are arranged one by one corresponding to the plurality of first samples 200, the upper ends of the plurality of second samples 400 are all used to be bonded to the lower surface of the rubber sheet 500 by means of a rubber adhesive, and the lower ends of the plurality of second samples 400 are all used to be connected to the output end of the bonding strength tester;

[0044] A second positioning plate 300, the second positioning plate 300 is disposed below the rubber sheet 500, and a plurality of second test specimens 400 are detachably connected to the second positioning plate 300;

[0045] The clamping assembly 600 is used to drive the first positioning plate 100 and the second positioning plate 300 to approach each other so that the lower ends of the multiple first samples 200 can be pressed against the upper surface of the rubber sheet 500, and the upper ends of the multiple second samples 400 can be pressed against the lower surface of the rubber sheet 500.

[0046] It is understandable that when the adhesive strength of the rubber adhesive needs to be tested, the operator can install multiple first samples 200 on the first positioning plate 100, and install multiple second samples 400 on the second positioning plate 300, and then the operator applies the rubber adhesive to be tested on the lower ends of the multiple first samples 200 and the upper ends of the multiple second samples 400. After the rubber adhesive is applied, the operator operates the clamping assembly 600. Under the action of the clamping assembly 600, the first positioning plate 100 and the second positioning plate 300 are close to each other, the first positioning plate 100 drives the multiple first samples 200 to descend, and the second positioning plate 300 drives the multiple second samples 400 to rise, so that the lower ends of the multiple first samples 200 can be pressed against the upper surface of the rubber sheet 500, and the upper ends of the multiple second samples 400 can be pressed against the lower surface of the rubber sheet 500. After the rubber adhesive is cured, the operator loads the rubber sheet 500, the first positioning plate 100, the second positioning plate 300, the multiple first samples 200 and the multiple second samples 400 into the bonding strength testing machine, so that the upper ends of the multiple first samples 200 are connected to the output end of the bonding strength testing machine, and the lower ends of the multiple second samples 400 are connected to the output end of the bonding strength testing machine. The output end of the bonding strength testing machine simultaneously pulls the multiple first samples 200 and the multiple second samples 400 to measure the current bonding strength of the rubber adhesive. Under the continuous pressing force of the pressing assembly 600, a stable and uniform pressure can be maintained between the multiple first samples 200 and the upper surface of the rubber sheet 500, and a stable and uniform pressure can be maintained between the multiple second samples 400 and the lower surface of the rubber sheet 500, which not only discharges the air in the rubber adhesive between the multiple first samples 200 and the rubber sheet 500, but also discharges the air in the rubber adhesive between the multiple second samples 400 and the rubber sheet 500, thereby preventing air from entering the rubber adhesive between the multiple first samples 200 and the rubber sheet 500, and also preventing air from entering the rubber adhesive between the multiple second samples 400 and the rubber sheet 500, which is beneficial to improving the detection accuracy of the bonding strength tester.

[0047] It should be explained that, in the embodiment of the present invention, a plurality of first samples 200 and a plurality of second samples 400 are respectively provided on the upper and lower sides of the rubber sheet 500, so that the sample preparation device for the rubber adhesive bonding strength test of the embodiment of the present invention is suitable for simulating the scenario where components are bonded to both sides of the rubber.

[0048] refer to Figure 1The clamping assembly 600 includes multiple bolts 610 and multiple nuts 620. The first positioning plate 100 is provided with multiple first through holes 110, the second positioning plate 300 is provided with multiple second through holes 310, and the rubber sheet 500 is provided with multiple third through holes 510. The multiple second through holes 310 are arranged in a one-to-one correspondence with the multiple first through holes 110, and the multiple third through holes 510 are arranged in a one-to-one correspondence with the multiple first through holes 110. The multiple bolts 610 are respectively penetrated into the multiple first through holes 110, the multiple second through holes 310 and the multiple third through holes 510, and the multiple nuts 620 are threadedly connected with the multiple bolts 610. The nuts of the multiple bolts 610 can all abut against the second positioning plate 300, and the multiple nuts 620 can all abut against the first positioning plate 100, so that the first positioning plate 100 and the second positioning plate 300 can be close to each other. The number of bolts 610, nuts 620, first through holes 110, second through holes 310 and third through holes 510 are all the same, the multiple second through holes 310 are arranged in a one-to-one correspondence with the multiple first through holes 110, and the multiple third through holes 510 are arranged in a one-to-one correspondence with the multiple first through holes 110, that is, in the up and down directions, the first through holes 110, the second through holes 310 and the third through holes 510 are directly through, the first through holes 110, the second through holes 310 and the third through holes 510 are all circular holes, and the axes of the first through holes 110, the second through holes 310 and the third through holes 510 coincide.

[0049] It is understandable that by tightening the nut 620, the nut 620 can be abutted against the first positioning plate 100, and the nut of the bolt 610 can be abutted against the second positioning plate 300. The nut 620 is further tightened, and driven by the nut 620 and the nut of the bolt 610, the first positioning plate 100 and the second positioning plate 300 are close to each other, so that the first positioning plate 100 drives the plurality of first samples 200 to descend, and the second positioning plate 300 drives the plurality of second samples 400 to rise, so that the lower ends of the plurality of first samples 200 can be pressed against the upper surface of the rubber sheet 500, and the upper ends of the plurality of second samples 400 can be pressed against the lower surface of the rubber sheet 500. By adjusting the tightening degree of the nut 620, the pressure between the plurality of first samples 200 and the plurality of second samples 400 and the rubber sheet 500 can also be adjusted. On the other hand, the bolts 610 and the nuts 620 are self-locking, so that a stable and uniform pressure can be maintained between the plurality of first specimens 200 and the upper surface of the rubber sheet 500 for a long time, and a stable and uniform pressure can be maintained between the plurality of second specimens 400 and the lower surface of the rubber sheet 500 for a long time.

[0050] As an embodiment of the utility model, the elastic washer can provide additional friction between the nut 620 and the bolt 610, so that the bolt 610 and the nut 620 are not easy to loosen under the action of vibration or other external forces, so that a stable and uniform pressure can be maintained between the multiple first specimens 200 and the upper surface of the rubber sheet 500 for a long time, and a stable and uniform pressure can be maintained between the multiple second specimens 400 and the lower surface of the rubber sheet 500 for a long time.

[0051] refer to Figure 2 and Figure 4 The number of the first through holes 110 is consistent with the number of the first specimens 200, a plurality of first through holes 110 are arranged in a circular array on the first positioning plate 100, a plurality of first specimens 200 are arranged in a circular array on the first positioning plate 100, the center of the circular array of the plurality of first through holes 110 coincides with the center of the circular array of the plurality of first specimens 200, and the plurality of first specimens 200 are respectively arranged between two adjacent first through holes 110. It can be understood that since the multiple second through holes 310 are arranged in a one-to-one correspondence with the multiple first through holes 110, and the multiple third through holes 510 are arranged in a one-to-one correspondence with the multiple first through holes 110, the multiple second through holes 310 are arranged in a circular array on the second positioning plate 300, and the multiple third through holes 510 are arranged in a circular array on the rubber sheet 500, and the center of the circular array of the multiple second through holes 310 coincides with the center of the circular array of the multiple first through holes 110 when viewed from top to bottom, and the center of the circular array of the multiple third through holes 510 coincides with the center of the circular array of the multiple first through holes 110 when viewed from top to bottom.

[0052] It can be understood that a plurality of first through holes 110 are arranged in a circular array on the first positioning plate 100, a plurality of first specimens 200 are arranged in a circular array on the first positioning plate 100, and a plurality of first specimens 200 are respectively arranged between two adjacent first through holes 110. This uniform distribution arrangement enables the force applied by the plurality of nuts 620 to the plurality of first specimens 200 through the first positioning plate 100 to be more uniform, thereby enabling the lower ends of the plurality of first specimens 200 to be more evenly pressed against the upper surface of the rubber sheet 500, thereby facilitating improving the detection accuracy of the bonding strength testing machine.

[0053] refer to Figure 1 and Figure 3The first sample 200 includes a first adhesive joint 210 and a first connecting column 220. The diameter of the first adhesive joint 210 is larger than the diameter of the first connecting column 220. The lower end of the first connecting column 220 is connected to the upper end of the first adhesive joint 210. The upper end of the first connecting column 220 is used to be connected to the output end of the bonding strength tester. The lower end of the first adhesive joint 210 is used to be bonded to the upper surface of the rubber sheet 500 through a rubber adhesive. A plurality of first positioning holes 120 having the same number as the first through holes 110 are provided on the first positioning plate 100. The plurality of first positioning holes 120 are arranged in a circular array on the first positioning plate 100. The center of the circular array of the plurality of first positioning holes 120 is the same as the center of the cylindrical array of the plurality of first through holes 110. The plurality of first positioning holes 120 are respectively arranged between two adjacent first through holes 110. The plurality of first connecting columns 220 are respectively penetrated into the plurality of first positioning holes 120 so that the plurality of first adhesive joints 210 can abut against the first positioning plate 100. It can be understood that the diameter of the first adhesive joint 210 is greater than the diameter of the first connecting column 220. After the first connecting column 220 is inserted into the first positioning hole 120, the first adhesive joint 210 can abut against the first positioning plate 100, so that the first positioning plate 100 can drive the first adhesive joint 210 and the first connecting column 220 to descend during the descent process.

[0054] refer to Figure 1 and Figure 3 , a first pin hole 221 is provided on the outer wall of the upper end of the first connecting column 220. It can be understood that the first pin hole 221 is provided on the outer wall of the upper end of the first connecting column 220, so that the output end of the bonding strength tester can be inserted into the first pin hole 221 on the first connecting column 220 through the pin shaft, so as to realize the connection between the output end of the bonding strength tester and the plurality of first connecting columns 220, thereby enabling the output end of the bonding strength tester to pull the plurality of first connecting columns 220 and the plurality of first bonding heads 210.

[0055] refer to Figure 4, the number of the second through holes 310 is consistent with the number of the second specimens 400, the plurality of second through holes 310 are arranged in a circumferential array on the second positioning plate 300, the plurality of second specimens 400 are arranged in a circumferential array on the second positioning plate 300, the center of the circumferential array of the plurality of second through holes 310 is the same as the center of the cylindrical array of the plurality of second specimens 400, and the plurality of second specimens 400 are respectively arranged between two adjacent second through holes 310. It can be understood that the plurality of second through holes 310 are arranged in a circumferential array on the second positioning plate 300, the plurality of second specimens 400 are arranged in a circumferential array on the second positioning plate 300, and the plurality of second specimens 400 are respectively arranged between two adjacent second through holes 310, and this uniform distribution arrangement enables the force applied by the nuts of the plurality of bolts 610 to the plurality of second specimens 400 through the second positioning plate 300 to be more uniform, thereby enabling the upper ends of the plurality of second specimens 400 to be more uniformly pressed against the lower surface of the rubber sheet 500, thereby facilitating the improvement of the detection accuracy of the adhesive strength tester.

[0056] refer to Figure 1 and Figure 4 The second sample 400 includes a second adhesive joint 410 and a second connecting column 420. The diameter of the second adhesive joint 410 is larger than the diameter of the second connecting column 420. The upper end of the second connecting column 420 is connected to the lower end of the second adhesive joint 410. The lower end of the second connecting column 420 is used to be connected to the output end of the bonding strength tester. The upper end of the second adhesive joint 410 is used to be bonded to the lower surface of the rubber sheet 500 through a rubber adhesive. A plurality of second positioning holes 320 having the same number as the second through holes 310 are provided on the second positioning plate 300. The plurality of second positioning holes 320 are arranged in a circular array on the second positioning plate 300. The center of the circular array of the plurality of second positioning holes 320 is the same as the center of the cylindrical array of the plurality of second through holes 310. The plurality of second positioning holes 320 are respectively arranged between two adjacent second through holes 310. The plurality of second connecting columns 420 are respectively penetrated into the plurality of second positioning holes 320 so that the plurality of second adhesive joints 410 can abut against the second positioning plate 300. It can be understood that the diameter of the second adhesive joint 410 is greater than the diameter of the second connecting column. After the second connecting column 420 is passed through the second positioning hole 320, the second adhesive joint 410 can abut against the second positioning plate 300, so that the second positioning plate 300 can drive the second adhesive joint 410 and the second connecting column 420 to rise during the rising process.

[0057] refer to Figure 1 and Figure 4, a second pin hole 421 is provided on the outer wall of the lower end of the second connecting column 420. It can be understood that the second pin hole 421 is provided on the outer wall of the lower end of the second connecting column 420, so that the output end of the bonding strength tester can be inserted into the second pin hole 421 on the second connecting column 420 through the pin shaft, so as to realize the connection between the output end of the bonding strength tester and the plurality of second connecting columns 420, thereby enabling the output end of the bonding strength tester to pull the plurality of second connecting columns 420 and the plurality of second bonding joints 410.

[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A sample preparation device for rubber adhesive bonding strength test, characterized in that: include: Rubber sheets; A plurality of first samples, wherein the lower ends of the plurality of first samples are bonded to the upper surface of the rubber sheet by a rubber adhesive, and the upper ends of the plurality of first samples are connected to the output end of the bonding strength tester; a first positioning plate, the first positioning plate being arranged above the rubber sheet, and a plurality of the first specimens being detachably connected to the first positioning plate; A plurality of second samples, wherein the plurality of second samples are arranged in one-to-one correspondence with the plurality of first samples, the upper ends of the plurality of second samples are all used to be bonded to the lower surface of the rubber sheet through the rubber adhesive, and the lower ends of the plurality of second samples are all used to be connected to the output end of the bonding strength tester; a second positioning plate, the second positioning plate being arranged below the rubber sheet, and a plurality of the second specimens being detachably connected to the second positioning plate; A clamping assembly, wherein the first positioning plate and the second positioning plate are connected by the clamping assembly, and the clamping assembly is used to drive the first positioning plate and the second positioning plate to approach each other, so that the lower ends of the plurality of first specimens can be pressed against the upper surface of the rubber sheet, and the upper ends of the plurality of second specimens can be pressed against the lower surface of the rubber sheet.

2. The sample preparation device for rubber adhesive bonding strength test according to claim 1, characterized in that: The clamping assembly includes multiple bolts and multiple nuts, multiple first through holes are opened on the first positioning plate, multiple second through holes are opened on the second positioning plate, and multiple third through holes are opened on the rubber sheet. The multiple second through holes are arranged in a one-to-one correspondence with the multiple first through holes, and the multiple third through holes are arranged in a one-to-one correspondence with the multiple first through holes. The multiple bolts are respectively inserted into the multiple first through holes, the multiple second through holes and the multiple third through holes, and the multiple nuts are threadedly connected with the multiple bolts. The nuts of the multiple bolts can all abut against the second positioning plate, and the multiple nuts can all abut against the first positioning plate, so that the first positioning plate and the second positioning plate can be close to each other.

3. The sample preparation device for rubber adhesive bonding strength test according to claim 2, characterized in that: The clamping assembly further includes a plurality of elastic washers, and the plurality of nuts are respectively in contact with the first positioning plate via the plurality of elastic washers.

4. The sample preparation device for rubber adhesive bonding strength test according to claim 2, characterized in that: The number of the first through holes is consistent with the number of the first specimens, a plurality of the first through holes are arranged in a circular array on the first positioning plate, a plurality of the first specimens are arranged in a circular array on the first positioning plate, the center of the circular array of the plurality of the first through holes is the same as the center of the cylindrical array of the plurality of the first specimens, and the plurality of the first specimens are respectively arranged between two adjacent first through holes.

5. The sample preparation device for rubber adhesive bonding strength test according to claim 4, characterized in that: The first test specimen includes a first bonding joint and a first connecting column, the diameter of the first bonding joint is larger than the diameter of the first connecting column, the lower end of the first connecting column is connected to the upper end of the first bonding joint, the upper end of the first connecting column is used to be connected to the output end of the bonding strength tester, the lower end of the first bonding joint is used to be bonded to the upper surface of the rubber sheet through the rubber adhesive, a plurality of first positioning holes consistent with the number of the first through holes are provided on the first positioning plate, a plurality of first positioning holes are arranged in a circular array on the first positioning plate, the center of the circular array of the plurality of first positioning holes is the same as the center of the cylindrical array of the plurality of first through holes, the plurality of first positioning holes are respectively arranged between two adjacent first through holes, and the plurality of first connecting columns are respectively penetrated into the plurality of first positioning holes, so that the plurality of first bonding joints can abut against the first positioning plate.

6. The sample preparation device for rubber adhesive bonding strength test according to claim 5, characterized in that: A first pin hole is formed on the outer wall of the upper end of the first connecting column.

7. The sample preparation device for rubber adhesive bonding strength test according to claim 4, characterized in that: The number of the second through holes is consistent with the number of the second specimens, a plurality of the second through holes are arranged in a circular array on the second positioning plate, a plurality of the second specimens are arranged in a circular array on the second positioning plate, the center of the circular array of the plurality of the second through holes is the same as the center of the cylindrical array of the plurality of the second specimens, and the plurality of the second specimens are respectively arranged between two adjacent second through holes.

8. The sample preparation device for rubber adhesive bonding strength test according to claim 7, characterized in that: The second sample includes a second bonding joint and a second connecting column, the diameter of the second bonding joint is larger than the diameter of the second connecting column, the upper end of the second connecting column is connected to the lower end of the second bonding joint, the lower end of the second connecting column is used to be connected to the output end of the bonding strength tester, the upper end of the second bonding joint is used to be bonded to the lower surface of the rubber sheet through the rubber adhesive, a plurality of second positioning holes consistent with the number of the second through holes are opened on the second positioning plate, a plurality of second positioning holes are arranged in a circular array on the second positioning plate, the center of the circular array of the plurality of second positioning holes is the same as the center of the cylindrical array of the plurality of second through holes, the plurality of second positioning holes are respectively arranged between two adjacent second through holes, and the plurality of second connecting columns are respectively penetrated into the plurality of second positioning holes, so that the plurality of second bonding joints can abut against the second positioning plate.

9. The sample preparation device for rubber adhesive bonding strength test according to claim 8, characterized in that: A second pin hole is formed on the outer wall of the lower end of the second connecting column.

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