Glue adhesion testing device and testing method thereof

Abstract

The present invention discloses a glue adhesion test device, including a cabinet, wherein the cabinet is provided with a housing welded on the surfaces of the two sides of four brackets through support plates, a distribution box is assembled on one side surface of the housing through bolts, a single chip is provided on the inner wall of the distribution box, the single chip is electrically connected to a control button through a line, the single chip is electrically connected to a timer arranged on the housing through a line with a control button, the single chip is electrically connected to an air pressure pump arranged in the cabinet through a line with a control button, and the single chip is electrically connected to a cylinder arranged on the cabinet through a line with a control button. The present invention utilizes an air pressure pump in conjunction with a box structure to pressurize the adhesive to be tested, and utilizes air pressure to apply force, so that the entire adhesive can be fully and evenly stressed, thereby ensuring the stability and reliability of the overall test.

Description

Technical Field

[0001] The invention belongs to the technical field of adhesion detection, and particularly relates to a glue adhesion testing device and a testing method thereof. Background Art

[0002] Glue is an intermediate that connects two materials. It mostly appears as an aqueous solution and belongs to the category of fine chemicals. There are many types, which are mainly classified by adhesive, physical form, hardening method and adherend material. Common ones include instant glue, epoxy resin adhesive, anaerobic glue, UV glue, hot melt adhesive, pressure sensitive adhesive, latex, etc.

[0003] During the processing of workpieces or the output of glue, it is necessary to test the key performance of glue adhesion. When testing the adhesion, it is usually necessary to bond two plates with the adhesive to be tested (such as glue) to make a test sample, and then use the testing device to apply shear force along the bonding surface and / or tensile force perpendicular to the bonding surface to the test sample. When the applied shear force and / or tensile force just separates the two plates, the shear force and / or tensile force at this time can be regarded as the adhesion of the adhesive.

[0004] Common testing devices generally have a simple structure. The shear force and / or tensile force applied to the test sample is often uneven in direction and difficult to control. In addition, the force application method of the hydraulic cylinder may cause the substrate of the adhesive to be damaged due to factors such as the quality of the adhesive or external collisions, thereby affecting the normal testing work. There may be large deviations during the test. At the same time, the test steps are relatively complicated, the operation efficiency is low, and it is impossible to accurately measure multiple test objects simultaneously. Summary of the invention

[0005] The purpose of the present invention is to provide a glue adhesion testing device, which utilizes an air pressure pump in conjunction with a box structure to pressurize the adhesive to be tested, and utilizes air pressure to apply force so that the entire adhesive can be sufficiently and evenly stressed, thereby ensuring the stability and reliability of the overall test, so as to solve the problems in the prior art raised in the above background technology.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A glue adhesion test device comprises a cabinet and a box body, wherein a lap plate is welded on the cabinet body, and a plurality of opening grooves are uniformly provided on the surface of the lap plate at predetermined intervals in sequence for placing a test piece, wherein the test piece is formed by bonding a first metal single sheet with a through hole and a second metal single sheet with a groove shape using glue to be tested; a plurality of box bodies are respectively located vertically above the corresponding opening grooves; an air pressure pump is respectively installed inside the cabinet body corresponding to each box body, an isolation cover is embedded in the inner wall of one end of the box body facing the lower opening groove, an output end of the air pressure pump passes through the top of the box body through an air delivery pipe and is connected to the top of the isolation cover, and a sealing ring is bonded to the peripheral surface of the bottom end of the isolation cover of the box body; cylinders are uniformly installed on the surface of the cabinet body in sequence, and the cylinders drive the box body to move vertically; during testing, the cylinder drives one end of the box body to approach the surface of the lap plate, and finally makes the isolation cover in the box body contact with the upper surface of the first metal single sheet, and cooperates with the sealing ring around the isolation cover to air-seal the test piece to form a sealed space.

[0008] Specifically, the cylinder is connected and fixed to the bottom of the box body through the cooperation of the piston rod, and the box body is provided with guide rods on the surfaces of both sides of the piston rod, and one end of the guide rods is slidably plugged into the surface of the cabinet.

[0009] Specifically, when placing the test piece, the volume of the sealed space is estimated in advance, the initial ventilation volume and rate are configured according to the volume, and reasonable set time parameters are configured to ensure that the ventilation volume within the set time is 5-10 times the volume of the sealed space.

[0010] Specifically, the first metal monolith is a hard metal plate with a predetermined thickness d1; the second metal monolith is an integrally formed groove-shaped hard metal plate, the bottom wall of the groove has the same predetermined thickness d1 as the first metal monolith, and the predetermined thickness d1 is inversely proportional to the hardness of the metal plate.

[0011] Two brackets are welded on both sides of the top surface of the cabinet, and lap plates are welded on the tops of the four brackets. Open grooves are evenly opened on the surfaces of the lap plates in sequence. The cabinet is welded with a housing on the surfaces of the four brackets through support plates. A distribution box is assembled on one side of the housing through bolts, and a single-chip microcomputer is arranged on the inner wall of the distribution box.

[0012] The surface of the housing is uniformly equipped with barometers, the surface of the housing below the barometer is equipped with a barometer display, the surface of the housing below the barometer display is equipped with a timer, and the surface of the housing below the timer is equipped with a control button;

[0013] The inner wall of the cabinet is uniformly welded with partitions in sequence, and the surface of the partitions is uniformly installed with air pressure pumps in sequence. An isolation cover is embedded on one side of the inner wall of the box body. The output end of the air pressure pump passes through the top of the box body through an air pipe and is fixedly connected to one end of the isolation cover. The air pressure pump is connected and installed with a pressure gauge arranged on the casing in sequence, and the air pressure pump is connected with a pressure display arranged on the casing through an air pressure sensor in sequence. Cylinders are uniformly installed on the surface of the cabinet in sequence, and the cylinders are connected and fixed to the bottom of the box body through a piston rod. Guide rods are installed on the surface of the box body on both sides of the piston rod, and one end of the guide rod is slidably plugged with the surface of the cabinet;

[0014] The single-chip microcomputer is electrically connected to the control button through a circuit, the single-chip microcomputer is electrically connected to a timer arranged on the casing through a circuit, the single-chip microcomputer is electrically connected to an air pressure pump arranged in a cabinet through a circuit, and the single-chip microcomputer is electrically connected to a cylinder arranged on the cabinet through a circuit.

[0015] Preferably, four supporting legs are evenly installed in sequence at the bottom of the cabinet, and silicone pads are respectively sleeved on the surfaces of the supporting legs, and the thickness of the silicone pads is 0.5 cm to 1 cm.

[0016] Preferably, linear bearings are evenly installed on the surface of the cabinet in sequence, and one end of the guide rod is slidably connected to the top surface of the cabinet through the linear bearing.

[0017] Preferably, five cabinet doors are evenly installed on the surface of the cabinet body in sequence through hinges, and the surfaces of the cabinet doors are each provided with a marking area.

[0018] Preferably, a side door is installed on one side of the surface of the distribution box, a handle is welded on the surface of the side door, and a non-slip sleeve made of rubber material is sleeved on the surface of the handle.

[0019] Preferably, the surface of the cylinder is fixedly connected to the mounting frame by screws, and the mounting frame is an integrated structure made of steel structural material.

[0020] Preferably, the top surface of the box body is equipped with connectors by bolts, the surfaces of the connectors are evenly and sequentially provided with mounting holes, and both sides of the surfaces of the connectors are integrated with raised edges.

[0021] Preferably, a sealing ring is bonded to the peripheral surface of the box body at one end of the isolation cover, and the thickness of the sealing ring is 3mm to 5mm.

[0022] Preferably, the spacing between the opening slots is 15 cm to 20 cm, and the spacing between the box bodies is the same as the spacing between the opening slots and is 15 cm to 20 cm.

[0023] The present application also discloses a method for testing glue adhesion, using the above-mentioned glue adhesion testing device, comprising the following steps:

[0024] S1. Prepare a qualified test piece using the glue to be tested, wherein the test piece is formed by bonding a first metal single sheet with a through hole and a second metal single sheet with a groove using the glue to be tested;

[0025] S2. After the airtight sealing preparation of the test piece is completed, the cylinder drives one end of the box body to move downward, and cooperates with the sealing ring around the isolation cover to air-seal the test piece to form a sealed space;

[0026] S3, continuously pressurizing the sealed space between the isolation cover and the test piece, and the rapidly expanding air pressure pushes the first metal single piece and the second metal single piece to separate toward each other, during which the air pressure is controlled and displayed by a barometer in cooperation with an air pressure display, and a timer performs timing work for the set time, so as to meet the basic detection time of different glues;

[0027] After the set time expires, the air pressure pump stops working, and the cylinder drives the isolation cover on the box body to leave the surface of the overlap plate. At this time, if the first metal single sheet and the second metal single sheet are still in a bonding state, the test is passed.

[0028] Technical effects and advantages of the present invention: Compared with the prior art, the glue adhesion testing device proposed by the present invention has the following advantages:

[0029] 1. The present invention utilizes an air pressure pump in conjunction with a box structure to pressurize the test piece, and utilizes air pressure to apply force, thereby replacing the shear force and tension force in the traditional test method, so that the entire adhesive can be stressed more evenly, thereby ensuring the stability and reliability of the overall test.

[0030] 2. The detection box structure uses a cylinder and a guide rod to adjust the position, which can ensure the sealing effect of the detection box during detection. At the same time, it has a certain supporting effect to avoid position displacement caused by external collisions.

[0031] 3. The device is provided with multiple boxes, each of which is provided with multiple groups of air pressure pumps, air cylinders, timers, barometers, air pressure displays and control buttons. Any position can be selected for detection according to needs, and it is convenient to detect multiple adhesives at the same time. The overall operation is simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the present invention;

[0033] Figure 2It is a schematic diagram of the connection structure between the box body, the air pressure pump and the air cylinder of the present invention;

[0034] Figure 3 It is a schematic diagram of the cabinet structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the installation structure of the distribution box of the present invention;

[0036] Figure 5 It is a schematic diagram of the connection structure between the gas delivery pipe and the isolation cover of the present invention;

[0037] Figure 6 Schematic diagram of the bonding structure of the test piece.

[0038] In the figure: 1. cabinet body; 2. cabinet door; 3. support leg; 4. bracket; 5. lap plate; 51. opening groove; 6. support plate; 7. casing; 8. barometer; 9. air pressure display; 10. timer; 11. control button; 12. distribution box; 121. side door; 13. box body; 131. connector; 14. cylinder; 15. mounting frame; 16. piston rod; 17. guide rod; 18. linear bearing; 19. partition; 20. air pressure pump; 21. air pipe; 22. isolation cover; 23. sealing ring; 24. marking area; 25. single chip microcomputer; 26. test piece; 261. first metal single piece; 262. second metal single piece. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] The present invention provides Figure 1-6 The glue adhesion testing device shown in the figure comprises a cabinet 1 and a box 13.

[0041] Two brackets 4 are welded to both sides of the top surface of the cabinet 1, and lap plates 5 are welded to the tops of the four brackets 4. A plurality of open grooves 51 are uniformly opened on the surfaces of the lap plates 5 at predetermined intervals. A casing 7 is welded to the surfaces of both sides of the four brackets 4 of the cabinet 1 through support plates 6, and a barometer 8 is uniformly installed on the surface of the casing 7 in sequence. A pressure display 9 is installed on the surface of the casing 7 below the barometer 8, a timer 10 is installed on the surface of the casing 7 below the pressure display 9, and a control button 11 is installed on the surface of the casing 7 below the timer 10.

[0042] A distribution box 12 is assembled on one side surface of the casing 7 by bolts, and a single-chip computer 25 is provided on the inner wall of the distribution box 12; a side door 121 is installed on one side of the surface of the distribution box 12, and a handle is welded on the surface of the side door 121, and a non-slip cover made of rubber material is sleeved on the surface of the handle to provide a certain anti-slip protection effect, avoid accidents during maintenance, and enhance overall safety.

[0043] The inner wall of the cabinet 1 is uniformly welded with partitions 19, and the surface of the partitions 19 is uniformly installed with air pumps 20. An isolation cover 22 is embedded on one side of the inner wall of the box body 13. The output end of the air pump 20 passes through the top of the box body 13 through the air pipe 21 and is fixedly connected with one end of the isolation cover 22. The air pump 20 is connected and installed with the barometer 8 arranged on the casing 7 in turn. The air pump 20 is connected to the air pressure display 9 arranged on the casing 7 through the air pressure sensor in turn. The surface of the cabinet 1 is uniformly installed with cylinders 14. The cylinder 14 is connected and fixed to the bottom of the box body 13 through the piston rod 16. The surface of the cylinder 14 is fixedly connected to the mounting frame 15 through screws. The mounting frame 15 is an integrated structure made of steel structure material, has good strength and rigidity, can cooperate with bolts to fully protect the cylinder 14, has anti-impact and anti-vibration effects, and is easy to disassemble and assemble.

[0044] A sealing ring 23 is bonded to the peripheral surface of the box body 13 at one end of the isolation cover 22. The thickness of the sealing ring 23 is 3mm to 5mm. When performing the test action, the sealing ring 23 can be tightly fitted with the lap plate 5 to close the gap between the isolation cover 22 and the open groove 51, thereby ensuring the airtightness of the test work.

[0045] Guide rods 17 are installed on the surfaces of both sides of the piston rod 16 of the box body 13, and one end of the guide rods 17 is slidably plugged into the surface of the cabinet body 1; linear bearings 18 are evenly installed on the surface of the cabinet body 1 in sequence, and one end of the guide rods 17 is slidably connected to the top surface of the cabinet body 1 through the linear bearings 18, so as to reduce the friction between each guide rod 17 and the surface of the cabinet body 1, and can ensure the guiding effect of the guide rods 17 while ensuring that the normal work of the cylinder 14 and the piston rod 16 is not affected.

[0046] The top surface of the box body 13 is installed with a connector 131 by bolts. The surface of the connector 131 is evenly provided with mounting holes, and the surfaces of the connector 131 are integrated with raised edges on both sides, which can facilitate the routing of the inside of the box body 13 and protect the lines or gas pipes 21 connected to the connector 131 to avoid damage caused by external factors.

[0047] The predetermined spacing between the opening slots 51 and the opening slots 51 arranged on the lap plate 5 is 15 cm to 20 cm, and the spacing between the box bodies 13 and the box bodies 13 is the same as the spacing between the opening slots 51 and is 15 cm to 20 cm, so that each box body 13 can be in the same vertical position with a single opening slot 51, which is convenient for subsequent detection work.

[0048] The single-chip computer 25 is electrically connected to the control button 11 through the circuit, the single-chip computer 25 is electrically connected to the timer 10 arranged on the housing 7 through the circuit, the single-chip computer 25 is electrically connected to the air pressure pump 20 arranged in the cabinet 1 through the circuit, and the single-chip computer 25 is electrically connected to the cylinder 14 arranged on the cabinet 1 through the circuit.

[0049] Four supporting legs 3 are evenly installed on the bottom of the cabinet 1 in sequence, and silicone pads are respectively sleeved on the surfaces of the supporting legs 3. The thickness of the silicone pads is 0.5cm~1cm, which can increase the surface friction of the supporting legs 3 and ensure the supporting effect of the cabinet 1; five cabinet doors 2 are evenly installed on the surface of the cabinet 1 through hinges in sequence, and the surfaces of the cabinet doors 2 are provided with marking areas 24, which are convenient for staff to open the cabinet doors 2 to maintain or repair the equipment inside the cabinet 1.

[0050] The specific testing method using the glue adhesion testing device disclosed in the present invention is as follows:

[0051] S1. Prepare a qualified test piece 26 using the glue to be tested. Figure 6 As shown, the test piece 26 is formed by bonding a first metal sheet 261 and a second metal sheet 262 using the glue to be tested. The qualified here means that the glue is applied in an appropriate and uniform amount and meets the required curing time.

[0052] The first metal single sheet 261 is a hard metal plate with a predetermined thickness d1, a through hole is opened in the middle, and the distance between the edges of the through hole and the outer peripheral edge of the metal plate is not less than a predetermined distance d2. Specifically, the predetermined distance is 2-6 cm, so as to ensure that the test piece 26 can be placed on the opening groove 51 of the lap plate 5 relatively flat later. The metal plate has a strong supporting force and is not easy to deform.

[0053] The second metal single sheet 262 is an integrally formed groove-shaped hard metal plate, the thickness of the four side walls of the groove does not exceed the predetermined distance d2, and is generally slightly smaller than the predetermined distance d2, and the bottom wall of the groove has the same predetermined thickness d1 as the first metal single sheet 261. Specifically, the predetermined thickness d1 is inversely proportional to the hardness of the metal plate, that is, the higher the hardness of the metal plate, the smaller the value of the predetermined thickness d1.

[0054] S2. Complete the preparation for airtight sealing of the test piece 26.

[0055] Place the test piece 26 at the opening groove 51 on the lap plate 5, so that the periphery of the first metal single piece 261 can overlap at the opening groove 51, and the second metal single piece 262 passes through the opening groove 51, completing the basic configuration work;

[0056] The staff manually selects the box body 13 corresponding to the position of the opening slot 51, manually opens the control button 11 on the box body 13, and the cylinder 14 drives the piston rod 16 to press down, driving one end of the box body 13 to move closer to the surface of the lap plate 5, and finally makes the isolation cover 22 in the box body 13 contact with the upper surface of the first metal single piece 261, and cooperates with the sealing ring 23 around the isolation cover 22 to perform air sealing between the test pieces 26, forming a sealed space, so as to avoid subsequent gas leakage, which will affect the test results;

[0057] S3. Pressurize the sealed space to test the adhesion of the glue to be tested.

[0058] The air pressure pump 20 is controlled to supply air to the isolation cover 22 through the air supply pipe 21, and the air is continuously pressurized in the sealed space between the isolation cover 22 and the test piece 26. The rapidly expanding air pressure pushes the first metal single piece 261 and the second metal single piece 262 to separate toward each other. During this period, the air pressure is controlled and displayed by the barometer 8 in cooperation with the air pressure display 9, and the timer 10 performs the timing work of setting the time, such as 10-30 minutes, so as to meet the basic detection time of different glues. During this period, the staff monitors the test process in real time;

[0059] When placing the test piece 26, the device's single-chip microcomputer or other controller estimates in advance the volume of the sealed space formed by sealing the test piece 26 based on the detected size, configures the initial ventilation volume and rate based on the volume, and configures reasonable set time parameters to ensure that the ventilation volume within the set time is 5-10 times the volume of the sealed space.

[0060] After the waiting set time expires, the timer 10 returns to zero, the air pump 20 stops working, and the cylinder 14 drives the piston rod 16 to lift upward, so that the isolation cover 22 on the box body 13 leaves the surface of the lap plate 5. During this period, the two guide rods 17 guide and assist in supporting the lifting action of the box body 13. At this time, if the first metal single sheet 261 and the second metal single sheet 262 are still in a bonding state, the test is passed.

[0061] Since the glue adhesion testing device of the present invention has multiple box bodies 13 and corresponding opening slots 51 on the overlapping plates 5, test pieces 26 using different glues can be placed in different opening slots 51 at the same time, and the adhesion of multiple glues to be tested can be measured and tested simultaneously, which greatly improves work efficiency.

[0062] The present invention uses an air pressure pump in conjunction with a box structure to pressurize the test piece, and uses air pressure to apply force, thereby replacing the shear force and tension in the traditional test method, so that the entire adhesive can be stressed more evenly, thereby ensuring the stability and reliability of the overall test. At the same time, the test box structure uses a cylinder in conjunction with a guide rod to adjust the position, which can ensure the sealing effect of the test box during testing, and has a certain support effect to avoid easy position deviation due to external bumps.

[0063] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A glue adhesion testing device, comprising a cabinet (1) and a plurality of boxes (13), characterized in that: A lap plate (5) is welded on the cabinet (1), and a plurality of opening grooves (51) are uniformly provided on the surface of the lap plate (5) at predetermined intervals for placing a test piece (26), wherein the test piece (26) is formed by bonding a first metal single piece (261) having a through hole and a second metal single piece (262) in the shape of a groove using a glue to be tested; The plurality of box bodies (13) are respectively located vertically above the corresponding opening slots (51); An air pressure pump (20) is installed inside the cabinet (1) corresponding to each box body (13), and an isolation cover (22) is embedded in the inner wall of one end of the box body (13) facing the lower opening groove (51). The output end of the air pressure pump (20) passes through the top of the box body (13) through the air delivery pipe (21) and is connected to the top of the isolation cover (22). A sealing ring (23) is bonded to the peripheral surface of the bottom end of the isolation cover (22) of the box body (13); Cylinders (14) are evenly installed on the surface of the cabinet (1) in sequence, and the cylinders (14) drive the box (13) to move vertically; During testing, the cylinder (14) drives one end of the box body (13) to move closer to the surface of the lap plate (5), and finally causes the isolation cover (22) in the box body (13) to contact the upper surface of the first metal single sheet (261), and cooperates with the sealing ring (23) around the isolation cover (22) to perform air sealing on the test piece (26), thereby forming a sealed space.

2. A glue adhesion testing device according to claim 1, characterized in that: The cylinder (14) is connected and fixed to the bottom of the box body (13) through the cooperation of the piston rod (16); the box body (13) is provided with guide rods (17) on the surfaces of both sides of the piston rod (16); one end of the guide rods (17) is slidably plugged into the surface of the cabinet (1).

3. A glue adhesion testing device according to claim 1, characterized in that: When placing the test piece (26), the volume of the sealed space is estimated in advance, the initial ventilation volume and rate are configured according to the volume, and reasonable setting time parameters are configured to ensure that the ventilation volume within the set time is 5-10 times the volume of the sealed space.

4. The glue adhesion testing device according to claim 1, characterized in that: The first metal single sheet (261) is a hard metal plate with a predetermined thickness d1; the second metal single sheet (262) is an integrally formed groove-shaped hard metal plate, the bottom wall of the groove has the same predetermined thickness d1 as the first metal single sheet (261), and the predetermined thickness d1 is set inversely proportional to the hardness of the metal plate.

5. The glue adhesion testing device according to claim 1, characterized in that: Two brackets (4) are respectively welded to both sides of the top surface of the cabinet (1), and the tops of the four brackets (4) are welded to the lap plates (5); The cabinet (1) has a housing (7) welded to the surfaces of both sides of the four brackets (4) through support plates (6), a distribution box (12) is assembled to one side of the housing (7) through bolts, and a single-chip computer (25) is provided on the inner wall of the distribution box (12); The surface of the housing (7) is uniformly and evenly mounted with a barometer (8); the surface of the housing (7) below the barometer (8) is mounted with a barometer display (9); the surface of the housing (7) below the barometer display (9) is mounted with a timer (10); and the surface of the housing (7) below the timer (10) is mounted with a control button (11).

6. A glue adhesion testing device according to claim 5, characterized in that: The air pressure pump (20) is connected and installed in sequence with a pressure gauge (8) arranged on the casing (7), and the air pressure pump (20) is connected in sequence with an air pressure display (9) arranged on the casing (7) through an air pressure sensor.

7. The glue adhesion testing device according to claim 5, characterized in that: The single-chip microcomputer (25) is electrically connected to the control button (11) through a circuit, the single-chip microcomputer (25) is electrically connected to a timer (10) arranged on the housing (7) through a circuit and the control button (11), the single-chip microcomputer (25) is electrically connected to an air pressure pump (20) arranged in the cabinet (1) through a circuit and the control button (11), and the single-chip microcomputer (25) is electrically connected to a cylinder (14) arranged on the cabinet (1) through a circuit and the control button (11).

8. The glue adhesion testing device according to claim 1, characterized in that: The top surface of the box body (13) is fitted with a connecting piece (131) by means of bolts, the surface of the connecting piece (131) is evenly provided with mounting holes in sequence, and both sides of the surface of the connecting piece (131) are integrally provided with raised edges.

9. The glue adhesion testing device according to claim 1, characterized in that: The thickness of the sealing ring (23) is 3 mm to 5 mm; the spacing between the opening grooves (51) is 15 cm to 20 cm; the spacing between the box bodies (13) is the same as the spacing between the opening grooves (51), and both are 15 cm to 20 cm.

10. A method for testing glue adhesion, using a glue adhesion testing device according to any one of claims 1 to 9 to test a test piece (26), characterized in that: S1. Using the glue to be tested, a qualified test piece (26) is prepared. The test piece (26) is formed by bonding a first metal single piece (261) having a through hole and a second metal single piece (262) having a groove shape using the glue to be tested; S2, the preparation for airtight sealing of the test piece (26) is completed, the cylinder (14) drives one end of the box body (13) to move downward, and cooperates with the sealing ring (23) around the isolation cover (22) to air-seal the test piece (26) to form a sealed space; S3, continuously pressurizing the sealed space between the isolation cover (22) and the test piece (26), and the rapidly expanding air pressure pushes the first metal single piece (261) and the second metal single piece (262) to separate toward each other, during which the air pressure is controlled and displayed by the barometer (8) in cooperation with the air pressure display (9), and the timer (10) performs timing work for the set time, so as to meet the basic detection time of different glues; After the set time expires, the air pressure pump (20) stops working, and the cylinder (14) drives the isolation cover (22) on the box body (13) to leave the surface of the overlapping plate (5). At this time, if the first metal single sheet (261) and the second metal single sheet (262) are still in a bonding state, the test is passed.

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