Testing equipment and method for detecting bonding strength of adhesive

Abstract

The invention belongs to the technical field of adhesive performance detection, particularly relates to test equipment and a test method for detecting adhesive bonding strength, and aims to solve the problem that different detection equipment needs to be used when different adhesive bonding strengths are detected in the prior art, the following scheme is provided: the test equipment comprises a base, a U-shaped frame is fixed at the top of the base, and the U-shaped frame is fixed at the bottom of the base; a hydraulic cylinder fixedly penetrates through the top of the U-shaped frame, a first U-shaped clamping seat is fixed to an output shaft of the hydraulic cylinder, a countersunk head screw is clamped in the first U-shaped clamping seat, a bonding bottom material and a bonding top material are arranged at the bottom end of the countersunk head screw, and the bonding bottom material and the bonding top material are bonded through mucilage glue. According to the test equipment, a tensile bonding force test, a shear bonding force test, an impact bonding force test and an environmental adaptability test can be sequentially performed on the test equipment, so that the test function of the test equipment is improved, the test cost is reduced, the test range is greatly widened, and the efficiency of later-stage adhesive bonding strength detection can be further improved.

Description

Technical Field

[0001] The invention relates to the technical field of adhesive performance detection, and in particular to a test device and method for detecting adhesive bonding strength. Background Art

[0002] Adhesive strength testing is the process of quantitatively evaluating the bond strength of adhesives or adhesive joints, and is an important step in ensuring adhesive performance and product quality. The main purpose of adhesive strength testing is to evaluate the bonding performance of adhesives under different conditions, including its tensile strength, shear strength, peel strength, etc., to ensure that it can meet the design requirements and use needs in actual applications.

[0003] The prior art still has the following deficiencies in the process of adhesive strength testing: the prior art needs to conduct multiple aspects of adhesive strength testing, such as tensile adhesion test, shear adhesion test, impact adhesion test and environmental adaptability test, etc. However, different testing equipment needs to be used when conducting different adhesive strength tests, thereby increasing the cost of adhesive strength testing.

[0004] In view of the above problems, the present invention document proposes a test device and method for detecting adhesive strength. Summary of the invention

[0005] The purpose of the present invention is to solve the disadvantage that different testing equipment is needed to detect different adhesive bonding strengths, and to propose a testing equipment and method for detecting adhesive bonding strengths.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A test device for detecting adhesive bonding strength, comprising a base, a U-shaped frame is fixed on the top of the base, a hydraulic cylinder is fixed through the top of the U-shaped frame, a first U-shaped clamping seat is fixed to the output shaft of the hydraulic cylinder, and a countersunk screw is clamped in the first U-shaped clamping seat, and a bonding bottom material and a bonding top material are provided at the bottom end of the countersunk screw, and the bonding bottom material and the bonding top material are adhered by adhesive; It also includes a mounting seat fixed in the U-shaped frame, wherein the mounting seat is provided with a moving groove, wherein a connecting frame is slidably matched in the moving groove, wherein a rotating shaft is rotatably connected in the connecting frame, and a second U-shaped clamping seat is provided above the rotating shaft; A tensile bonding strength test structure is arranged in the second U-shaped holder and is used to perform a tensile bonding strength test on the bonding base material and the bonding top material; A shear bonding strength test structure is arranged in the mounting seat and is used to perform a shear bonding strength test on the bonding bottom material and the bonding top material; The environmental adaptability test structure is arranged in the U-shaped frame and is used for performing environmental adaptability test on the bonding bottom material and the bonding top material.

[0007] In one possible design, the tensile bonding force testing structure includes a mounting platform placed on a second U-shaped holder, the bonding base material is detachably fixed on the top of the mounting platform, and second pressure sensors are fixedly embedded on the inner walls on both sides of the top of the second U-shaped holder for detecting the tensile force borne by the bonding base material when it moves upward, threaded holes are provided on the top and one side of the bonding top material, and the threaded holes are threadedly connected to the countersunk screw for connecting the bonding top material with the countersunk screw, and for pulling the bonding top material through a hydraulic cylinder, and a rotating seat is provided on the outer wall fixed sleeve of the rotating shaft, and the top end of the rotating seat is fixedly connected to the bottom end of the second U-shaped holder; the output shaft of the hydraulic cylinder pulls the mounting platform, the bonding base material and the bonding top material through the cooperation of the first U-shaped holder and the countersunk screw, and during the upward movement, the bonding base material contacts the second pressure sensor, and the tensile force borne by the bonding base material is detected by the second pressure sensor, and during the test, it is necessary to record the maximum tensile force at the time of fracture, and analyze the fracture mode to determine whether it is glue failure or material fracture itself.

[0008] In one possible design, the shear bonding force testing structure includes a block fixed in the second U-shaped seat, and the block is used to block the mounting platform, so that the mounting platform is generated with pulling force when the bonding top material moves down in the later stage. A first pressure sensor is fixedly embedded on one side of the block, which is used to measure the pulling force borne by the mounting platform. A lifting slot is provided in the connecting frame, and a lifting plate is slidably connected in the lifting slot. Baffles are fixed on both sides of the lifting plate, and the two baffles are slidably connected to the connecting frame. When the lifting plate drives the baffle to move up, it contacts the bottom of the second U-shaped seat to make the second U-shaped seat horizontal. When the lifting plate drives the baffle to move down, the flipped second U-shaped seat is braked to make it vertical. A threaded rod threadedly connected to the lifting plate is rotatably connected in the lifting slot, and the bottom end of the threaded rod rotates and extends to the bottom of the connecting frame to drive the lifting plate to move up and down. The inner walls on both sides of the movable groove that are away from each other are provided with track grooves, and pin rods are fixed on both sides of the connecting frame, and the pin rods are slidably matched with adjacent track grooves, and magnet blocks are fixed on the other two inner walls of the movable groove, and the other two sides of the connecting frame are fixedly embedded with iron sheets, and the iron sheets and adjacent magnet blocks generate magnetic attraction for stabilizing the position of the connecting frame; the threaded rod is rotated in the opposite direction to drive the lifting plate and the baffle to move downward, thereby releasing the resistance to the second U-shaped seat, and the second U-shaped seat can be flipped 90° until the second U-shaped seat touches the baffle, at which time the second U-shaped seat is arranged vertically, and then the connecting frame is pushed to move to the left, and the countersunk screw just matches the threaded hole on one side of the bonding top material, and the countersunk screw and the bonding top material are pushed downward by the hydraulic cylinder, and the bonding top material drives the bonding bottom material and the mounting platform to move downward, and the first pressure sensor detects that the mounting platform is subjected to downward pulling force.

[0009] In a possible design, the environmental adaptability test structure includes a simulation barrel arranged in a U-shaped frame, and sliding plates are fixed on both sides of the simulation barrel, wherein one end of one of the sliding plates is slidably connected to an inner wall of one side of the U-shaped frame, and a transmission groove is provided on the inner wall of the other side of the U-shaped frame, in which a screw rod is rotatably connected, one end of the other sliding plate extends into the transmission groove and is slidably connected to the transmission groove, and the top end thread of the screw rod passes through the adjacent sliding plate, which is used to drive the simulation barrel to rise and fall, and a hole is provided on the top of the simulation barrel for making way for the hydraulic cylinder, and a carbon wire resistance heating plate and a cooling plate are fixed on the top inner wall of the simulation barrel for controlling the temperature in the simulation barrel, and an annular liquid storage ring is fixed on the inner wall of the simulation barrel, and a plurality of liquid storage rings are fixed on the side wall of the annular liquid storage ring for supplying liquid to the simulation barrel. An atomizing nozzle for spraying water mist in a simulated barrel, a liquid injection hose is fixedly passed through the simulated barrel, and one end of the liquid injection hose is connected to the annular liquid storage ring, the other end of the liquid injection hose extends to the top of the U-shaped frame, and is connected to the external water pump for injecting water into the annular liquid storage ring, a temperature and humidity transmitter is fixedly passed through one side of the simulated barrel, for detecting the temperature and humidity in the simulated barrel; the motor drives the screw rod to rotate, and the screw rod drives the simulated barrel to move down to the mounting seat, at which time the second U-shaped holder, the mounting platform and the bonding top material are all located in the simulated barrel, and then the carbon wire resistance heating plate, the cooling plate and the atomizing nozzle are started as needed to control the temperature and humidity in the simulated barrel, and the bonding strength, shear bonding strength and impact bonding strength can be tested one by one under different temperatures and humidities to evaluate its performance in different environments.

[0010] In a possible design, a plurality of bolts are provided in the bonding base material, and the bottom ends of the plurality of bolts are threadedly extended into the mounting platform; the bonding base material can be fixed on the mounting platform by the bolts, so that the bonding base material and the bonding top material after gluing can be replaced conveniently at a later time.

[0011] In a possible design, an upper groove is provided at the top of one side of the track groove, a lower groove is provided at the bottom of the side of the track groove away from the upper groove, and the pin rod slides with the upper groove and the lower groove respectively, so as to make the second pressure sensor more stable when rising and falling, a plurality of U-shaped plates are fixed to the bottom of the mounting seat, a plurality of rectangular grooves are provided in the connecting frame, and the rectangular grooves slide with adjacent U-shaped plates, so as to make the connecting frame slide stably in the moving groove.

[0012] In a possible design, a fixing plate is provided at the bottom of the second U-shaped socket away from the stop block, and a plurality of trapezoidal plates are fixed on the top of the fixing plate. The top ends of the plurality of trapezoidal plates all slide and extend into the second U-shaped socket to limit the mounting platform in the second U-shaped socket. A plurality of tension springs are fixed between the top of the fixing plate and the bottom of the second U-shaped socket, and the tension springs are sleeved on the outer wall of the trapezoidal plate.

[0013] The transmission gear of the present invention is a gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a

[0014] In a possible design, the top of the rotating plate is slidably connected to a sliding rod, the top of the sliding rod is fixedly connected to the bottom of the arc-shaped rack, a spring is fixed between the bottom of the arc-shaped rack and the top of the rotating plate, and the spring is sleeved on the outer wall of the sliding rod; the arc-shaped rack moves upward under the elastic force of the spring and meshes with the gear, and when tensile adhesion test and shear adhesion test are required, the arc-shaped rack is pressed down to release the meshing of the arc-shaped rack and the gear, so as to facilitate the adjustment of the position of the second U-shaped socket at a later time.

[0015] In the present application, a method for using a test device for detecting adhesive bonding strength comprises the following steps: S1. Use adhesive to connect the bonding bottom material and the bonding top material, and bolt the bottom material to the mounting table. The mounting table can be disassembled for replacement; the mounting table is pushed into the second U-shaped holder, which is limited by the trapezoidal plate, and the countersunk screw is connected to the bonding top material and is placed in the first U-shaped holder to clamp it. S2. During the tensile test, the threaded rod is rotated to lift the baffle plate to make the second U-shaped holder horizontal; the hydraulic cylinder pulls the bonding bottom material and the bonding top material through the first U-shaped holder and the countersunk screw, and the connecting frame rises and is limited by the magnet block; the second pressure sensor detects the tensile force, records the maximum tensile force at the time of fracture, and analyzes the fracture mode; S3. During the shear test, the threaded rod is rotated in the opposite direction to lower the baffle, and the second U-shaped holder is flipped vertically; the connecting frame is pushed to the lower groove and limited by the magnet block, the hydraulic cylinder pushes the bonding top material downward, and the first pressure sensor detects the tension; force is applied to the bonding area at a constant speed to destroy it, the maximum shear force is recorded and the shear bonding strength is calculated; S4. During the impact test, the motor drives the rotating disk and the pin to drive the rotating plate and the arc-shaped rack to reciprocate, thereby driving the second U-shaped holder to swing back and forth; the arc-shaped rack meshes with the gear under the action of the spring, and can be disengaged when testing other forces; S5. During the environmental adaptability test, the motor drives the screw rod to move the simulated barrel down to cover the test component; the carbon resistance wire heating plate, cooling plate and atomizing nozzle are started to control the temperature and humidity, and the adhesion, shear force and impact tests are carried out in different environments to evaluate the performance.

[0016] Beneficial effects: In the present invention, second pressure sensors are fixedly embedded on both inner walls of the top side of the second U-shaped holder, threaded holes are provided on the top and one side of the bonding top material, and the threaded holes are threadedly connected with the countersunk screw, and a rotating seat is provided on the outer wall fixed sleeve of the rotating shaft, and the top of the rotating seat is fixedly connected with the bottom end of the second U-shaped holder; the output shaft of the hydraulic cylinder pulls the mounting table, the bonding bottom material and the bonding top material through the cooperation of the first U-shaped holder and the countersunk screw, and the bonding bottom material contacts the second pressure sensor during the upward movement, and the tensile force borne by the bonding bottom material is detected by the second pressure sensor, and during the test, the maximum tensile force at the time of fracture needs to be recorded, and the fracture mode needs to be analyzed to determine whether the glue fails or the material itself breaks; In the present invention, a first pressure sensor is fixedly embedded on one side of the block, a lifting plate is slidably connected in the lifting groove, baffles are fixed on both sides of the lifting plate, and a threaded rod threadedly connected to the lifting plate is rotatably connected in the lifting groove; the threaded rod drives the baffle to move downward, releases the resistance to the second U-shaped holder, and enables it to flip, until the second U-shaped holder touches the baffle, at which time the second U-shaped holder is arranged vertically, and then the countersunk screw cooperates with the bonding top material through the threaded hole, and the countersunk screw and the bonding top material are pushed downward by the hydraulic cylinder, and the bonding top material drives the bonding bottom material and the mounting platform to move downward, and the first pressure sensor detects that the mounting platform is subjected to a downward pulling force; In the present invention, a gear is fixed at one end of the rotating shaft, a rotating plate is rotatably connected to one side of the connecting frame, an arc-shaped rack is provided at the top of the rotating plate, a slide groove is provided in the rotating plate, a rotating disk is rotatably connected to one side of the connecting frame, and a pin is fixed at a position deviating from the center of the circle on one side of the rotating disk; the rotating disk drives the pin to rotate, and the cooperation of the pin and the slide groove drives the rotating plate and the arc-shaped rack to reciprocate, and the cooperation of the arc-shaped rack and the gear drives the gear and the rotating shaft to reciprocate, and the rotating shaft drives the base and the bonding bottom material and the bonding top material thereon to swing back and forth, so that the bonding surface is impacted, and then it is observed whether the bonding surface is damaged, and by recording the integrity of the bonding surface after the impact, the relationship between the impact energy and the bonding damage can be analyzed.

[0017] In the present invention, a carbon wire resistance heating plate and a cooling plate are fixed to the inner wall of the top of the simulation barrel, an annular liquid storage ring is fixed to the inner wall of the simulation barrel, and a plurality of atomizing nozzles for spraying water mist into the simulation barrel are fixed to the side wall of the annular liquid storage ring, a liquid injection hose is fixedly passed through the simulation barrel, and one end of the liquid injection hose is connected to the annular liquid storage ring, and a temperature and humidity transmission device is fixedly passed through one side of the simulation barrel; the motor drives the screw rod to rotate, and the screw rod drives the simulation barrel to move down to the mounting seat, and the carbon wire resistance heating plate, the cooling plate and the atomizing nozzle are started as needed to control the temperature and humidity in the simulation barrel, and the adhesion, shear adhesion and impact adhesion can be tested one by one under different temperatures and humidities to evaluate its performance in different environments.

[0018] In the present invention, tensile adhesion test, shear adhesion test, impact adhesion test and environmental adaptability test can be carried out in sequence on the test equipment, thereby improving the test function of the test equipment, reducing the test cost, greatly increasing the test range, and thus increasing the efficiency of subsequent adhesive strength detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a test device for detecting adhesive bonding strength provided in Example 1 of the present invention; Figure 2 This is a schematic cross-sectional structural diagram of a base and a simulation barrel of a test device for detecting adhesive bonding strength provided in Example 1 of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of a mounting base and a connecting frame of a test device for detecting adhesive bonding strength provided in Example 1 of the present invention; Figure 4 A schematic diagram of the three-dimensional structure of a second U-shaped holder, a stopper and a bonding top material of a test device for detecting adhesive bonding strength provided in Example 1 of the present invention; Figure 5 A schematic diagram of a three-dimensional exploded structure of a second U-shaped holder, a fixing plate and a stopper of a test device for detecting adhesive bonding strength provided by Example 1 of the present invention; Figure 6 A schematic diagram of a three-dimensional explosion structure of a second U-shaped holder and a bonding top material of a test device for detecting adhesive bonding strength provided in Example 1 of the present invention; Figure 7 A schematic diagram of a three-dimensional exploded cross-sectional structure of a mounting base and a connecting frame of a test device for detecting adhesive bonding strength provided in Example 1 of the present invention; Figure 8 A schematic cross-sectional view of a mounting base of a test device for detecting adhesive bonding strength provided in Example 1 of the present invention; Fig. 9A schematic diagram of the three-dimensional structure of a connecting frame, a baffle and a U-shaped plate of a test device for detecting adhesive bonding strength provided in Example 1 of the present invention; Fig.10 A schematic diagram of the three-dimensional structure of a second U-shaped holder of a test device for detecting adhesive bonding strength provided by Example 1 of the present invention after flipping over; Fig.11 A schematic diagram of the three-dimensional structure of a rotating plate, a liquid injection hose and an arc-shaped rack of a test device for detecting adhesive bonding strength provided in Example 2 of the present invention; Fig.12 This is a schematic diagram of the three-dimensional exploded structure of a gear, an arc-shaped rack and a rotating plate of a test device for detecting adhesive strength provided in Example 2 of the present invention.

[0020] In the figure: 1, base; 2, U-shaped frame; 3, hydraulic cylinder; 4, first U-shaped holder; 5, countersunk screw; 6, mounting seat; 7, moving groove; 8, connecting frame; 9, rotating shaft; 10, rotating seat; 11, second U-shaped holder; 12, stopper; 13, first pressure sensor; 14, bonding bottom material; 15, bolt; 16, bonding top material; 17, threaded hole; 18, second pressure sensor; 19, trapezoidal plate; 20, fixing plate; 21, tension spring; 22, track groove; 23, pin rod; 24, magnet block; 25, Lifting slot; 26, lifting plate; 27, baffle; 28, threaded rod; 29, rectangular slot; 30, U-shaped plate; 31, simulation barrel; 32, sliding plate; 33, transmission slot; 34, screw rod; 35, carbon resistance wire heating plate; 36, cooling plate; 37, temperature and humidity transmission device; 38, annular liquid storage ring; 39, atomizing nozzle; 40, liquid injection hose; 41, gear; 42, rotating plate; 43, sliding rod; 44, spring; 45, arc rack; 46, rotating disk; 47, pin; 48, slide slot; 49, mounting table. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings 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.

[0022] Example 1: Reference Figure 1 , Figure 2 and Figure 5, a test equipment, relates to the technical field of adhesive performance detection, the test equipment comprises a base 1, a U-shaped frame 2 is fixed to the top of the base 1 by welding or fastening bolts, a hydraulic cylinder 3 is passed through and fixed to the top of the U-shaped frame 2, and a first U-shaped holder 4 is fixed to the end of the output shaft of the hydraulic cylinder 3. A slot matching a countersunk screw 5 is designed in the first U-shaped holder 4, and the countersunk screw 5 can be firmly clamped in the first U-shaped holder 4. The bottom end of the countersunk screw 5 is provided with a bonding bottom material 14 and a bonding top material 16 in sequence, and the two are pasted by adhesive to simulate the bonding effect in actual use.

[0023] Reference Figure 1 , Figure 3 and Figure 7 In the U-shaped frame 2, a mounting seat 6 is also fixed, and a moving groove 7 is provided in the mounting seat 6. In the moving groove 7, a connecting frame 8 is slidably matched, and the connecting frame 8 can slide left and right smoothly in the moving groove 7. In the connecting frame 8, a rotating shaft 9 is rotatably connected, and a second U-shaped card seat 11 is provided above the rotating shaft 9. The second U-shaped card seat 11 is fixedly connected to the rotating shaft 9 through a rotating seat 10, so that the second U-shaped card seat 11 can be flipped at a certain angle relative to the connecting frame 8.

[0024] Reference Figure 4-Figure 6 In order to realize the tensile bonding force test, a tensile bonding force test structure is provided in the second U-shaped holder 11. Specifically, a mounting platform 49 is provided at the bottom of the second U-shaped holder 11, and the bonding base material 14 is fixed to the top of the mounting platform 49 by a detachable method such as a fastening bolt connection and a snap connection. Second pressure sensors 18 are fixedly embedded on the inner walls on both sides of the top of the second U-shaped holder 11, which are used to detect the tensile force borne by the bonding base material 14 during the stretching process. Threaded holes 17 are provided on the top and one side of the bonding top material 16, and these threaded holes 17 are threadedly connected to the countersunk screw 5, thereby ensuring that the bonding top material 16 can be connected to the output shaft of the hydraulic cylinder 3 through the countersunk screw 5.

[0025] Specifically, when the hydraulic cylinder 3 is working, its output shaft pulls the mounting platform 49, the bonding base material 14 and the bonding top material 16 upward as a whole through the cooperation of the first U-shaped clamping seat 4 and the countersunk screw 5. In this process, the bonding base material 14 will contact the second pressure sensor 18, so that the tension borne by the bonding base material 14 is detected and recorded by the second pressure sensor 18. During the test, it is necessary to record the maximum tensile force at the time of fracture and analyze the fracture mode to determine whether the glue fails or the material itself breaks.

[0026] Reference Figure 6In addition, in order to facilitate the replacement of the test piece after bonding, a plurality of bolts 15 are provided in the bonding base material 14, and the bottom ends of the bolts 15 are threadedly extended into the mounting platform 49. The bonding base material 14 can be conveniently fixed on the mounting platform 49 through the bolts 15, and can also be conveniently removed for replacement.

[0027] Reference Figure 1 , Figure 5 and Figure 7-10 In order to realize the shear adhesion test, a shear adhesion test structure is also provided in the mounting seat 6. Specifically, a stopper 12 is provided in the second U-shaped holder 11, and the stopper 12 is used to block the mounting platform 49 to ensure that during the shear test, the adhesive top material 16 can generate a pulling force on the mounting platform 49 when it moves down. On one side of the stopper 12, a first pressure sensor 13 is fixedly embedded to measure the pulling force borne by the mounting platform 49 during the shearing process. A lifting groove 25 is provided in the connecting frame 8, and a lifting plate 26 is slidably connected in the lifting groove 25, and baffles 27 are fixed on both sides of the lifting plate 26, and the baffles 27 are slidably connected to the connecting frame 8. When the lifting plate 26 drives the baffle 27 to move upward, it will interfere with the bottom of the second U-shaped card seat 11, so that the second U-shaped card seat 11 remains horizontal; when the lifting plate 26 drives the baffle 27 to move downward, it will release the interference with the second U-shaped card seat 11, and the second U-shaped card seat 11 can be flipped 90 degrees until it touches the baffle 27. At this time, the second U-shaped card seat 11 is arranged vertically. A threaded rod 28 threadedly connected to the lifting plate 26 is rotatably connected in the lifting groove 25, and the bottom end of the threaded rod 28 rotates and extends to the bottom of the connecting frame 8. The lifting plate 26 can be driven to move up and down by rotating the threaded rod 28. Track grooves 22 are provided on the inner walls on both sides of the moving groove 7, and pin rods 23 are fixed on both sides of the connecting frame 8. The pin rods 23 slide in cooperation with the track grooves 22 to ensure the stability of the connecting frame 8 during movement. Magnet blocks 24 are fixed to the inner walls of the other two sides of the movable groove 7, and iron sheets are fixedly embedded on the other two sides of the connecting frame 8. The iron sheets and the magnet blocks 24 generate magnetic attraction to further ensure the stability of the position of the connecting frame 8.

[0028] Specifically, when performing the shear test, firstly, the threaded rod 28 is rotated in the opposite direction to drive the lifting plate 26 and the baffle plate 27 to move downward, thereby releasing the interference with the second U-shaped holder 11, and then the second U-shaped holder 11 is flipped 90° to be arranged vertically. Then, the connecting frame 8 is pushed to move to the left so that the countersunk screw 5 is matched with the threaded hole 17 on one side of the bonding top material 16. At this time, the hydraulic cylinder 3 is started to push the countersunk screw 5 and the bonding top material 16 downward, and the bonding top material 16 drives the bonding bottom material 14 and the mounting platform 49 to move downward. The first pressure sensor 13 detects and records the downward pulling force on the mounting platform 49, which is the shear force.

[0029] Reference Figure 7-Figure 9In order to further improve the stability of the device, an upper groove is provided at the top of one side of the track groove 22, and a lower groove is provided at the bottom of the side away from the upper groove. The pin rod 23 slides with the upper groove and the lower groove respectively, so that when the second pressure sensor 18 rises and falls, the pin rod 23 will slide in the upper groove and the lower groove, making the movement of the second pressure sensor 18 more stable. At the same time, a plurality of U-shaped plates 30 are fixed at the bottom of the mounting seat 6, and a plurality of rectangular grooves 29 are provided in the connecting frame 8, and these rectangular grooves 29 slide with adjacent U-shaped plates 30. In this way, when the connecting frame 8 slides in the moving groove 7, the cooperation between the U-shaped plate 30 and the rectangular groove 29 can ensure that the movement of the connecting frame 8 is more stable.

[0030] Reference Figure 1 and Figure 2 In addition, in order to simulate the bonding effect under different environments, an environmental adaptability test structure is also provided in the U-shaped frame 2. The structure can perform environmental adaptability tests on the bonding base material 14 and the bonding top material 16 by adjusting parameters such as temperature and humidity to evaluate their bonding performance under different environments.

[0031] Reference Figure 1 and Figure 2 The environmental adaptability test structure is specifically configured as follows: a simulation barrel 31 is arranged inside the U-shaped frame 2, and the simulation barrel 31 is used to simulate different environmental conditions. Sliding plates 32 are fixed on both sides of the simulation barrel 31, and one end of one sliding plate 32 is slidably connected to the inner wall of one side of the U-shaped frame 2, so that the simulation barrel 31 can slide stably in this direction. On the inner wall of the other side of the U-shaped frame 2, a transmission groove 33 is designed, and a screw rod 34 is rotatably connected in the transmission groove 33. One end of another sliding plate 32 extends into the transmission groove 33 and is slidably connected to the transmission groove 33. At the same time, the top thread of the screw rod 34 passes through the adjacent sliding plate 32. When the motor drives the screw rod 34 to rotate, due to the threaded connection, the screw rod 34 will drive the simulation barrel 31 to move up and down.

[0032] Reference Figure 1 and 2A hole is designed on the top of the simulation barrel 31. The purpose of this hole is to make way for the hydraulic cylinder 3 so that the hydraulic cylinder 3 can smoothly operate the test piece below. A carbon resistance wire heating plate 35 and a cooling plate 36 are fixed on the top inner wall of the simulation barrel 31. These two devices are used to control the temperature in the simulation barrel 31 to simulate different ambient temperature conditions. At the same time, a temperature and humidity transmission device 37 is fixed on one side of the simulation barrel 31 to detect the temperature and humidity in the simulation barrel 31 in real time to ensure the accuracy of the test conditions. An annular liquid storage ring 38 is fixed on the inner wall of the simulation barrel 31. A plurality of atomizing nozzles 39 are fixed on the side wall of the annular liquid storage ring 38. These atomizing nozzles 39 are used to spray water mist into the simulation barrel 31 to simulate different humidity conditions. In addition, a liquid injection hose 40 is fixed in the simulation barrel 31. One end of the liquid injection hose 40 is connected to the annular liquid storage ring 38, and the other end extends to the top of the U-shaped frame 2 and is connected to the external water pump. In this way, water can be injected into the annular liquid storage ring 38 through the water pump and then sprayed out through the atomizing nozzle 39.

[0033] Specifically, when in use, the motor drives the screw rod 34 to rotate, and the screw rod 34 drives the simulation barrel 31 to move down to the mounting seat 6. At this time, the second U-shaped holder 11, the mounting platform 49 and the bonding top material 16 are all located in the simulation barrel 31. Then, the carbon resistance wire heating plate 35, the cooling plate 36 and the atomizing nozzle 39 are started as needed to control the temperature and humidity in the simulation barrel 31. Under different temperatures and humidities, the bonding strength, shear bonding strength and impact bonding strength can be tested one by one to evaluate the performance of the adhesive in different environments.

[0034] Reference Figure 5 In order to limit the mounting platform 49 in the second U-shaped holder 11, we added a fixing plate 20 at the bottom of the second U-shaped holder 11 away from the stopper 12. A plurality of trapezoidal plates 19 are fixed on the top of the fixing plate 20, and the tops of these trapezoidal plates 19 all slide and extend into the second U-shaped holder 11, forming an effective limit for the mounting platform 49. At the same time, in order to maintain the stability of the trapezoidal plates 19 in the second U-shaped holder 11, we fixed a plurality of tension springs 21 between the top of the fixing plate 20 and the bottom of the second U-shaped holder 11, and these tension springs 21 are sleeved on the outer wall of the trapezoidal plates 19, providing a certain elastic support for the trapezoidal plates 19.

[0035] In summary, the test equipment can comprehensively and accurately evaluate the bonding performance of the bonding base material 14 and the bonding top material 16 through the coordination of the tensile bonding test structure, the shear bonding test structure and the environmental adaptability test structure, and provide strong data support for practical applications.

[0036] Example 2: Reference Fig.11 and Fig.12, improved on the basis of Example 1: one end of the rotating shaft 9 rotates through the connecting frame 8, and a gear 41 is fixed at its end. A rotating plate 42 is rotatably connected to one side of the connecting frame 8, and an arc-shaped rack 45 is provided at the top of the rotating plate 42, and the arc-shaped rack 45 is meshed with the gear 41. In order to drive the rotating plate 42 to swing back and forth, a slide groove 48 is provided in the rotating plate 42, and a rotating disk 46 is rotatably connected to one side of the connecting frame 8. A pin 47 is fixed at a position deviating from the center of the circle on one side of the rotating disk 46, and the pin 47 extends into the slide groove 48 and slidably cooperates with the slide groove 48.

[0037] Specifically, when the motor drives the rotating disk 46 to rotate, the rotating disk 46 will drive the pin 47 to rotate, and the cooperation of the pin 47 and the slide slot 48 will drive the rotating plate 42 and the arc-shaped rack 45 to reciprocate. The cooperation of the arc-shaped rack 45 and the gear 41 will drive the gear 41 and the rotating shaft 9 to reciprocate, thereby driving the base 1 and the bonding bottom material 14 and the bonding top material 16 thereon to swing back and forth, so that the bonding surface is impacted. In order to observe whether the bonding surface is damaged, we can record the integrity of the bonding surface after the impact during the test. By analyzing the relationship between impact energy and bonding failure, we can evaluate the adhesive strength of the material to be tested.

[0038] refer to Fig.11 and Fig.12 In addition, we also set a disengagement mechanism between the arc-shaped rack 45 and the gear 41 to facilitate the adjustment of the position of the second U-shaped holder 11 in the later stage. Specifically, the top of the rotating plate 42 is slidably connected with a sliding rod 43, and the top of the sliding rod 43 is fixedly connected with the bottom of the arc-shaped rack 45. At the same time, a spring 44 is fixed between the bottom of the arc-shaped rack 45 and the top of the rotating plate 42, and the spring 44 is sleeved on the outer wall of the sliding rod 43.

[0039] Specifically, under normal circumstances, the arc-shaped rack 45 moves upward under the elastic force of the spring 44 and meshes with the gear 41. When the tensile adhesion test and the shear adhesion test are required, the arc-shaped rack 45 can be pressed down to release the meshing of the arc-shaped rack 45 and the gear 41, thereby facilitating the subsequent adjustment of the position of the second U-shaped holder 11.

[0040] A method for using a test device for detecting adhesive bonding strength comprises the following steps: S1. The bonding base material 14 and the bonding top material 16 are bonded by adhesive, and then the bonding base material 14 is fixed to the mounting platform 49 by bolts 15. The detachable connection between the mounting platform 49 and the bonding base material 14 can facilitate the later replacement of the bonding base material 14 and the bonding top material 16 after bonding; then the mounting platform 49 is pushed into the second U-shaped holder 11 from one side until the mounting platform 49 contacts the stopper 12, and the pulling of the tension spring 21 drives the trapezoidal plate 19 to move upward, which can limit the mounting platform 49 and ensure the stability of the mounting platform 49. Then, the countersunk screw 5 is threadedly connected to the bonding top material 16 through the threaded hole 17, and the countersunk head of the countersunk screw 5 is placed in the first U-shaped holder 4, and the first U-shaped holder 4 clamps the countersunk head of the countersunk screw 5; S2. When a tensile bonding force test is required, the threaded rod 28 is manually driven to rotate, and the threaded rod 28 drives the baffle plate 27 to rise through the lifting plate 26 until the top of the baffle plate 27 contacts the bottom of the second U-shaped holder 11, thereby making the second U-shaped holder 11 be placed horizontally, and the output shaft of the hydraulic cylinder 3 pulls the mounting platform 49, the bonding base material 14 and the bonding top material 16 through the cooperation of the first U-shaped holder 4 and the countersunk screw 5, and the connecting frame 8 rises accordingly, and the pin rod 23 extends to the upper groove in the track groove 22, and a magnetic attraction force is generated between the connecting frame 8 and one of the magnet blocks 24, and then the cooperation of the two is used to limit the connecting frame 8 to prevent the displacement of the connecting frame 8 from affecting the later detection. In addition, during the upward movement, the bonding base material 14 contacts the second pressure sensor 18, and the tension borne by the bonding base material 14 is detected by the second pressure sensor 18. In the test process, it is necessary to record the maximum tensile force at the time of fracture, and analyze the fracture mode to determine whether it is glue failure or material fracture itself. S3. When a shear bonding test is required, the bonding area between the bonding bottom material 14 and the bonding top material 16 is first calculated, and then the threaded rod 28 is rotated in the opposite direction to drive the lifting plate 26 and the baffle plate 27 to move downward, thereby releasing the interference with the second U-shaped holder 11. The second U-shaped holder 11 can be flipped 90° until the second U-shaped holder 11 touches the baffle plate 27. At this time, the second U-shaped holder 11 is arranged vertically, and then the connecting frame 8 is pushed to move to the left until the pin rod 23 moves to the lower groove in the track groove 22, and the adjacent magnet block 24 generates a magnetic attraction to the connecting frame 8, thereby The cooperation of the two is used to limit the connection frame 8, and at this time, the countersunk screw 5 just matches with the threaded hole 17 on one side of the bonding top material 16, and the countersunk screw 5 and the bonding top material 16 are pushed downward by the hydraulic cylinder 3, and the bonding top material 16 drives the bonding bottom material 14 and the mounting platform 49 to move downward, and the first pressure sensor 13 detects that the mounting platform 49 is subjected to a downward pulling force; during the test, the downward force is applied at a constant speed until the bonding area is damaged, and then the maximum shear force at the time of damage is recorded, and the shear bonding strength is calculated through its bonding area (shear bonding strength = maximum shear force / contact area); S4. When an impact bonding test is required, the rotating disk 46 is driven by a motor to rotate, and the rotating disk 46 drives the pin 47 to rotate. The cooperation of the pin 47 and the slide slot 48 drives the rotating plate 42 and the arc-shaped rack 45 to reciprocate. The cooperation of the arc-shaped rack 45 and the gear 41 drives the gear 41 and the rotating shaft 9 to reciprocate. The rotating shaft 9 drives the base 1 and the bonding bottom material 14 and the bonding top material 16 thereon to swing back and forth, so that the bonding surface is impacted, and then observe whether the bonding surface is damaged. By recording the integrity of the bonding surface after the impact, the relationship between the impact energy and the bonding damage can be analyzed; in addition, the arc-shaped rack 45 moves up under the elastic force of the spring 44 and meshes with the gear 41. When a tensile bonding test and a shear bonding test are required, the arc-shaped rack 45 is pressed down to release the meshing of the arc-shaped rack 45 and the gear 41, so as to facilitate the adjustment of the position of the second U-shaped holder 11 in the later stage; S5. When an environmental adaptability test is required, the motor drives the screw rod 34 to rotate, and the screw rod 34 drives the simulation barrel 31 to move down to the mounting seat 6. At this time, the second U-shaped holder 11, the mounting platform 49 and the bonding top material 16 are all located in the simulation barrel 31. Then, the carbon resistance wire heating plate 35, the cooling plate 36 and the atomizing nozzle 39 are started as needed to control the temperature and humidity in the simulation barrel 31. The bonding strength, shear bonding strength and impact bonding strength can be tested one by one under different temperatures and humidities to evaluate their performance in different environments.

[0041] However, as is well known to those skilled in the art, the working principles and wiring methods of the first pressure sensor 13, hydraulic cylinder 3, carbon wire heating plate 35, cooling plate 36, atomizing nozzle 39, temperature and humidity transmitter 37 and the second pressure sensor 18 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A test device for detecting adhesive bonding strength, characterized in that: The invention comprises a base (1), a U-shaped frame (2) is fixed on the top of the base (1), a hydraulic cylinder (3) is fixed and penetrates the top of the U-shaped frame (2), a first U-shaped clamping seat (4) is fixed on the output shaft of the hydraulic cylinder (3), a countersunk screw (5) is clamped in the first U-shaped clamping seat (4), a bonding bottom material (14) and a bonding top material (16) are provided at the bottom end of the countersunk screw (5), and the bonding bottom material (14) and the bonding top material (16) are adhered by adhesive. It also includes a mounting seat (6) fixed in the U-shaped frame (2), a movable groove (7) being provided in the mounting seat (6), a connecting frame (8) being slidably matched in the movable groove (7), a rotating shaft (9) being rotatably connected in the connecting frame (8), and a second U-shaped clamping seat (11) being provided above the rotating shaft (9); A tensile bonding strength testing structure, arranged in the second U-shaped holder (11), for performing a tensile bonding strength test on the bonding base material (14) and the bonding top material (16); A shear bonding strength testing structure, arranged in the mounting seat (6), and used to perform a shear bonding strength test on the bonding base material (14) and the bonding top material (16); The environmental adaptability testing structure is arranged in the U-shaped frame (2) and is used to perform environmental adaptability testing on the bonding bottom material (14) and the bonding top material (16).

2. A test device for detecting adhesive bonding strength according to claim 1, characterized in that: The tensile bonding force testing structure comprises a mounting platform (49) placed on a second U-shaped holder (11); the bonding base material (14) is detachably fixed on the top of the mounting platform (49); second pressure sensors (18) are fixedly embedded on both inner walls of the top of the second U-shaped holder (11) for detecting the tensile force borne by the bonding base material (14) when it moves upward; threaded holes (17) are provided on the top and one side of the bonding top material (16); the threaded holes (17) are threadedly connected to the countersunk screw (5) for connecting the bonding top material (16) to the countersunk screw (5) and for pulling the bonding top material (16) through the hydraulic cylinder (3); a rotating seat (10) is fixedly provided on the outer wall of the rotating shaft (9); the top of the rotating seat (10) is fixedly connected to the bottom of the second U-shaped holder (11).

3. A test device for detecting adhesive bonding strength according to claim 2, characterized in that: The shear bonding force test structure comprises a stopper (12) fixed in the second U-shaped holder (11), and the stopper (12) is used to block the mounting platform (49) so as to generate a pulling force on the mounting platform (49) when the bonding top material (16) moves downward in the later stage. A first pressure sensor (13) is fixedly embedded in one side of the stopper (12) for measuring the pulling force borne by the mounting platform (49). A lifting groove (25) is provided in the connecting frame (8), and a lifting plate (26) is slidably connected in the lifting groove (25). Baffles (27) are fixed on both sides of the lifting plate (26), and the two baffles (27) are slidably connected to the connecting frame (8). When the lifting plate (26) drives the baffles (27) to move upward, the lifting plate (26) contacts the bottom of the second U-shaped holder (11) so as to make the second U-shaped holder (11) horizontal. When the baffle plate (26) drives the baffle plate (27) to move downward, the flipped second U-shaped holder (11) is braked to make it vertical. A threaded rod (28) threadedly connected to the lifting plate (26) is rotatably connected in the lifting groove (25), and the bottom end of the threaded rod (28) is rotatably extended to the bottom of the connecting frame (8) to drive the lifting plate (26) to move up and down. The inner walls of the movable groove (7) on both sides away from each other are provided with track grooves (22). Pin rods (23) are fixed on both sides of the connecting frame (8), and the pin rods (23) are slidably matched with adjacent track grooves (22). Magnet blocks (24) are fixed on the other two inner walls of the movable groove (7). Iron sheets are fixedly embedded on the other two sides of the connecting frame (8), and the iron sheets and adjacent magnet blocks (24) generate magnetic attraction to stabilize the position of the connecting frame (8).

4. A test device for detecting adhesive bonding strength according to claim 3, characterized in that: The environmental adaptability test structure comprises a simulation barrel (31) arranged in a U-shaped frame (2), and sliding plates (32) are fixed on both sides of the simulation barrel (31), wherein one end of one of the sliding plates (32) is slidably connected to an inner wall of one side of the U-shaped frame (2), and the inner wall of the other side of the U-shaped frame (2) is provided with a transmission groove (33), and a screw rod (34) is rotatably connected in the transmission groove (33), and one end of the other sliding plate (32) extends into the transmission groove (33) and is slidably connected to the transmission groove (33), and the top end of the screw rod (34) passes through the adjacent sliding plate (32) for driving the simulation barrel (31) to rise and fall, and a hole is provided on the top of the simulation barrel (31) for making way for the hydraulic cylinder (3), and the top of the simulation barrel (31) has a hole in it. A carbon wire heating plate (35) and a cooling plate (36) are fixed to the wall for controlling the temperature in the simulation barrel (31); an annular liquid storage ring (38) is fixed to the inner wall of the simulation barrel (31); a plurality of atomizing nozzles (39) for spraying water mist into the simulation barrel (31) are fixed to the side wall of the annular liquid storage ring (38); a liquid injection hose (40) is fixedly passed through the simulation barrel (31); one end of the liquid injection hose (40) is connected to the annular liquid storage ring (38); the other end of the liquid injection hose (40) extends to the top of the U-shaped frame (2) and is connected to an external water pump for injecting water into the annular liquid storage ring (38); a temperature and humidity transmission device (37) is fixedly passed through one side of the simulation barrel (31) for detecting the temperature and humidity in the simulation barrel (31).

5. A test device for detecting adhesive bonding strength according to claim 4, characterized in that: A plurality of bolts (15) are arranged in the bonding base material (14), and the bottom ends of the plurality of bolts (15) are threadedly extended into the mounting platform (49).

6. A test device for detecting adhesive bonding strength according to claim 5, characterized in that: An upper groove is provided at the top of one side of the track groove (22), a lower groove is provided at the bottom of the side of the track groove (22) away from the upper groove, and a pin rod (23) is slidably matched with the upper groove and the lower groove respectively, so as to make the second pressure sensor (18) more stable when rising and falling. A plurality of U-shaped plates (30) are fixed at the bottom of the mounting seat (6), a plurality of rectangular grooves (29) are provided in the connecting frame (8), and the rectangular grooves (29) are slidably matched with adjacent U-shaped plates (30), so as to make the connecting frame (8) slide stably in the movable groove (7).

7. A test device for detecting adhesive bonding strength according to claim 6, characterized in that: A fixing plate (20) is provided at the bottom of the second U-shaped holder (11) on the side away from the stopper (12), and a plurality of trapezoidal plates (19) are fixed on the top of the fixing plate (20). The top ends of the plurality of trapezoidal plates (19) are slidably extended into the second U-shaped holder (11) to limit the position of the mounting platform (49) in the second U-shaped holder (11). A plurality of tension springs (21) are fixed between the top of the fixing plate (20) and the bottom of the second U-shaped holder (11), and the tension springs (21) are sleeved on the outer wall of the trapezoidal plates (19).

8. A test device for detecting adhesive bonding strength according to claim 7, characterized in that: One end of the rotating shaft (9) rotates through the connecting frame (8) and is fixed with a gear (41); one side of the connecting frame (8) is rotatably connected to a rotating plate (42); a top end of the rotating plate (42) is provided with an arc-shaped rack (45), and the arc-shaped rack (45) meshes with the gear (41); a slide groove (48) is provided in the rotating plate (42); one side of the connecting frame (8) is rotatably connected to a rotating disk (46); a pin (47) is fixed at a position deviating from the center of a circle on one side of the rotating disk (46); the pin (47) extends into the slide groove (48) and slidably cooperates with the slide groove (48); the rotating disk (46) drives the rotating plate (42) to swing back and forth through the cooperation of the pin (47) and the slide groove (48), thereby driving the gear (41) to rotate back and forth.

9. A test device for detecting adhesive bonding strength according to claim 8, characterized in that: The top end of the rotating plate (42) is slidably connected to a sliding rod (43), the top end of the sliding rod (43) is fixedly connected to the bottom end of the arc-shaped rack (45), a spring (44) is fixed between the bottom end of the arc-shaped rack (45) and the top end of the rotating plate (42), and the spring (44) is sleeved on the outer wall of the sliding rod (43).

10. A method for using a test device for detecting adhesive bonding strength, applied to the test device for detecting adhesive bonding strength as claimed in claim 9, characterized in that: The following steps are involved: S1. Use adhesive to connect the bonding bottom material (14) and the bonding top material (16), and use bolts (15) to fix the bottom material to the mounting platform (49). The mounting platform (49) is removable for replacement; the mounting platform (49) is pushed into the second U-shaped holder (11), and is limited by the trapezoidal plate (19). The countersunk screw (5) is connected to the bonding top material (16) and is placed in the first U-shaped holder (4) for clamping; S2, during the tensile test, the threaded rod (28) is rotated to lift the baffle (27) so that the second U-shaped holder (11) is horizontal; the hydraulic cylinder (3) pulls the bonding bottom material (14) and the bonding top material (16) through the first U-shaped holder (4) and the countersunk screw (5), and the connecting frame (8) rises and is limited by the magnet block (24); the second pressure sensor (18) detects the tensile force, records the maximum tensile force at the time of fracture, and analyzes the fracture mode; S3, during the shear test, the threaded rod (28) is rotated in the opposite direction to lower the baffle (27), and the second U-shaped holder (11) is flipped vertically; the connecting frame (8) is pushed to the lower groove and limited by the magnet block (24), the hydraulic cylinder (3) pushes the bonding top material (16) downward, and the first pressure sensor (13) detects the tensile force; a force is applied to the bonding area at a constant speed to destroy it, the maximum shear force is recorded and the shear bonding strength is calculated; S4, during the impact test, the motor drives the rotating disk (46) and the pin (47) to drive the rotating plate (42) and the arc-shaped rack (45) to reciprocate, thereby driving the second U-shaped holder (11) to swing back and forth; the arc-shaped rack (45) is meshed with the gear (41) under the action of the spring (44), and can be released when testing other forces; S5. During the environmental adaptability test, the motor drives the lead screw (34) to move the simulation barrel (31) downward to cover the test component; the carbon resistance wire heating plate (35), the cooling plate (36) and the atomizing nozzle (39) are started to control the temperature and humidity, and the adhesion, shear force and impact tests are carried out under different environments to evaluate the performance.

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