Test equipment and method for detecting adhesive bond strength

Abstract

The present invention belongs to the technical field of adhesive performance detection, and in particular to a test equipment and method for detecting adhesive bonding strength. In view of the problem that different detection equipment needs to be used for the existing different adhesive bonding strength detection, the following scheme is proposed, including a base, a U-shaped frame is fixed on the top of the base, a hydraulic cylinder is fixed on the top of the U-shaped frame, a first U-shaped socket is fixed on the output shaft of the hydraulic cylinder, and a countersunk screw is clamped in the first U-shaped socket, and the bottom end of the countersunk screw is provided with a bonding base material and a bonding top material, and the bonding base material and the bonding top material are adhered by adhesive. In the present invention, tensile bonding strength test, shear bonding strength test, impact bonding strength test and environmental adaptability test can be carried out in sequence on the test equipment, thereby improving the testing function of the test equipment, reducing the testing cost, greatly improving the testing range, and thus increasing the efficiency of the subsequent adhesive bonding strength detection.

Description

Technical Field

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

[0002] Adhesive bond strength testing is the process of quantitatively evaluating the bond strength of adhesives or bonded joints. It is a critical step in ensuring adhesive performance and product quality. The primary purpose of adhesive bond strength testing is to evaluate the adhesive's bonding properties under different conditions, including tensile strength, shear strength, and peel strength, to ensure that it meets design requirements and operational needs in actual applications.

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

[0004] In response to the above problems, the present invention document proposes a test device and method for detecting adhesive bond 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 bond strengths, and to propose a testing equipment and method for detecting adhesive bond strengths.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A test device for detecting adhesive bonding strength comprises a base, a U-shaped frame fixed to the top of the base, a hydraulic cylinder fixedly passing through the top of the U-shaped frame, a first U-shaped holder fixed to the output shaft of the hydraulic cylinder, a countersunk screw clamped in the first U-shaped holder, a bonding base material and a bonding top material provided at the bottom end of the countersunk screw, and the bonding base material and the bonding top material are adhered by adhesive;

[0008] It also includes a mounting base fixed in the U-shaped frame, a movable groove is provided in the mounting base, a connecting frame is slidably fitted in the movable groove, a rotating shaft is rotatably connected in the connecting frame, and a second U-shaped clamping seat is provided above the rotating shaft;

[0009] A tensile bonding strength test structure is provided 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;

[0010] A shear bonding strength test structure is provided in the mounting seat and is used to perform shear bonding strength tests on the bonding base material and the bonding top material;

[0011] The environmental adaptability test structure is arranged in the U-shaped frame and is used to perform environmental adaptability tests on the bonding base material and the bonding top material.

[0012] In one possible design, the tensile bonding force testing structure includes a mounting platform placed on a second U-shaped bracket, the bonding base material is detachably fixed to 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 bracket for detecting the tensile force borne by the bonding base material when it moves upward, and 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 and the countersunk screw for pulling the bonding top material through a hydraulic cylinder, and a rotating seat is fixedly sleeved on the outer wall of the rotating shaft, and the top end of the rotating seat is fixedly connected to the bottom end of the second U-shaped bracket; 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 bracket 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 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.

[0013] The lifting plate is fixed on the lifting slot and is slidably connected to the lifting plate. The two 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 of the two 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 slide in cooperation 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 force for stabilizing the position of the connecting frame; rotating the threaded rod in the opposite direction drives the lifting plate and the baffle to move downward, releasing the resistance to the second U-shaped bracket, and the second U-shaped bracket can be flipped 90° until the second U-shaped bracket touches the baffle. At this time, the second U-shaped bracket is arranged vertically, and then the connecting frame is pushed to move to the left, and the countersunk screw just cooperates with the threaded hole on one side of the bonding top material. 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.

[0014] In one 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, one end of one of the sliding plates is slidably connected to the inner wall of one side of the U-shaped frame, and the inner wall of the other side of the U-shaped frame is provided with a transmission groove, and a screw rod is rotatably connected in the transmission groove, one end of the other sliding plate extends into the transmission groove and is slidably connected to the transmission groove, and the top 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 feeding 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, and the other end of the liquid injection hose extends to the top of the U-shaped frame, and is connected to the outside 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 this 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 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.

[0015] In one 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, which can facilitate the later replacement of the bonding base material and the bonding top material after gluing.

[0016] In one possible design, an upper groove is provided at the top of one side of the track groove, and a lower groove is provided at the bottom 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, and a plurality of U-shaped plates are fixed to the bottom of the mounting seat, and a plurality of rectangular grooves are provided in the connecting frame, and the rectangular grooves slide with adjacent U-shaped plates to make the connecting frame slide stably in the movable groove.

[0017] In one possible design, a fixed plate is provided at the bottom of the second U-shaped holder away from the stop block, and a plurality of trapezoidal plates are fixed on the top of the fixed plate. The top ends of the plurality of trapezoidal plates all slide and extend into the second U-shaped holder to limit the mounting platform in the second U-shaped holder. A plurality of tension springs are fixed between the top of the fixed plate and the bottom of the second U-shaped holder, and the tension springs are sleeved on the outer wall of the trapezoidal plate.

[0018] The top of the rotating plate is provided with an arc rack, and the arc rack is meshed with the gear train of the gear train, and the rotating plate is provided with a slide groove, and one side of the connecting frame is rotatably connected to the rotating plate, and a pinion is fixed on the rotating plate at one end of the connecting frame, and a pinion is fixed on the rotating plate at a position deviating from the center of the circle. The pinion extends into the slide groove and slides and cooperates with the slide groove to drive the rotating plate to swing back and forth, thereby driving the gear to rotate back and forth; the rotating plate is driven by a motor to rotate, the rotating plate drives the pinion to rotate, and the cooperation of the pin and the slide groove drives the rotating plate and the arc rack to rotate back and forth, and the cooperation of the arc rack and the gear drives the gear and the rotating shaft to rotate back and forth, and the rotating shaft drives the base and the bonding bottom material and bonding top material 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 impact, the relationship between impact energy and bonding damage can be analyzed.

[0019] In a possible design, the top end of the rotating plate is slidably connected to a sliding rod, the top end of the sliding rod is fixedly connected to the bottom end of the arc-shaped rack, a spring is fixed between the bottom end of the arc-shaped rack and the top end 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 engages with the gear, and when tensile adhesion test and shear adhesion test are required, the arc-shaped rack is pressed down to release the engagement between the arc-shaped rack and the gear, which facilitates the later adjustment of the position of the second U-shaped holder.

[0020] In the present application, a method for using a testing device for detecting adhesive bond strength comprises the following steps:

[0021] S1. Use adhesive to connect the bonding base material and the bonding top material, and bolt the base 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 placed in the first U-shaped holder to lock it.

[0022] During the tensile test, the threaded rod is rotated to lift the baffle, making the second U-shaped holder horizontal. The hydraulic cylinder pulls the bonding base and top materials 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 fracture, and analyzes the fracture mode.

[0023] 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 tensile force. Force is applied at a constant speed until the bonding area fails, and the maximum shear force is recorded and the shear bond strength is calculated.

[0024] During the impact test, the motor drives the rotating disk and the pin to drive the rotating plate and the arc-shaped rack to rotate back and forth, thereby driving the second U-shaped holder to swing back and forth; the arc-shaped rack is engaged with the gear under the action of the spring and can be disengaged when testing other forces;

[0025] S5. During the environmental adaptability test, the motor drives the screw rod to move the simulated barrel downward 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.

[0026] Beneficial effects: In the present invention, second pressure sensors are fixedly embedded on both sides of the inner walls of the top 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 to the countersunk screws, and the outer wall fixed sleeve of the rotating shaft is provided with a rotating seat, and the top 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 table, 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. 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;

[0027] 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, releasing the resistance to the second U-shaped clamping seat, so that it can be flipped until the second U-shaped clamping seat touches the baffle, at which time the second U-shaped clamping seat is vertically arranged, and then the countersunk screw cooperates with the bonding top material through the threaded hole, and the hydraulic cylinder pushes the countersunk screw and the bonding top material downward, 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 pull;

[0028] In the present invention, a gear is fixed at one end of the rotating shaft, and a rotating plate is rotatably connected to one side of the connecting frame. The top of the rotating plate is provided with an arc-shaped rack, and a slide groove is provided in the rotating plate. One side of the connecting frame is rotatably connected to a rotating disk, and a pin is fixed at a position deviated 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 rotate reciprocally, and the cooperation of the arc-shaped rack and the gear drives the gear and the rotating shaft to rotate reciprocally, and the rotating shaft drives the base and the bonding bottom material and bonding top material 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 bonding damage can be analyzed.

[0029] In the present invention, a carbon wire 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 transmitter 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 heating plate, cooling plate and atomizing nozzle are started as needed to control the temperature and humidity in the simulation barrel. 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.

[0030] 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 testing function of the test equipment, reducing the testing cost, greatly increasing the testing range, and thus increasing the efficiency of subsequent adhesive strength testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the three-dimensional structure of a testing device for detecting adhesive bonding strength provided in Example 1 of the present invention;

[0032] Figure 2 This is a schematic cross-sectional view of a base and a simulated barrel of a test device for testing adhesive bonding strength provided in Example 1 of the present invention;

[0033] 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;

[0034] 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;

[0035] 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 in Example 1 of the present invention;

[0036] Figure 6 A schematic diagram of a three-dimensional exploded 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;

[0037] Figure 7 A schematic diagram of a three-dimensional exploded cross-section 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;

[0038] Figure 8 This is 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;

[0039] Figure 9 A schematic diagram of the three-dimensional structure of a connecting frame, a baffle and a U-shaped plate of a test device for testing adhesive bonding strength provided in Example 1 of the present invention;

[0040] Figure 10 This is a schematic diagram of the three-dimensional structure of the second U-shaped holder of the test equipment for testing adhesive bonding strength provided by Example 1 of the present invention after flipping over;

[0041] Figure 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 testing adhesive bonding strength provided in Example 2 of the present invention;

[0042] Figure 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 equipment for detecting adhesive strength provided by Example 2 of the present invention.

[0043] 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 base 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; 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; 35. Carbon wire heating plate; 36. Refrigeration plate; 37. Temperature and humidity transmitter; 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

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0045] Example 1: Reference Figure 1 、 Figure 2 and Figure 5The test equipment relates to the technical field of adhesive performance testing. The test equipment includes 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. The end of the output shaft of the hydraulic cylinder 3 is fixed to a first U-shaped holder 4. A slot is designed in the first U-shaped holder 4 to match the countersunk screw 5, which can be firmly clamped in the first U-shaped holder 4. The bottom end of the countersunk screw 5 is provided with an adhesive base material 14 and an adhesive top material 16 in sequence. The two are glued together to simulate the bonding effect in actual use.

[0046] Reference Figure 1 、 Figure 3 and Figure 7 A mounting base 6 is also fixed inside the U-shaped frame 2, and a movable groove 7 is provided inside the mounting base 6. A connecting frame 8 is slidably fitted inside the movable groove 7, and the connecting frame 8 can slide smoothly left and right inside the movable groove 7. A rotating shaft 9 is rotatably connected to the connecting frame 8, and a second U-shaped holder 11 is provided above the rotating shaft 9. The second U-shaped holder 11 is fixedly connected to the rotating shaft 9 via a rotating base 10, so that the second U-shaped holder 11 can be flipped at a certain angle relative to the connecting frame 8.

[0047] 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 in the inner walls on both sides of the top of the second U-shaped holder 11, which are used to detect the tensile force that the bonding base material 14 withstands 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.

[0048] Specifically, when hydraulic cylinder 3 is operating, its output shaft, through the cooperation of first U-shaped holder 4 and countersunk screw 5, pulls mounting platform 49, adhesive base material 14, and adhesive top material 16 upward. During this process, adhesive base material 14 contacts second pressure sensor 18, which detects and records the tensile force exerted on adhesive base material 14. During testing, the maximum tensile force at fracture is recorded, and the fracture pattern is analyzed to determine whether the adhesive failed or the material itself fractured.

[0049] 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 these bolts 15 are threadedly extended into the mounting platform 49. The bonding base material 14 can be conveniently fixed to the mounting platform 49 through the bolts 15, and can also be easily removed for replacement.

[0050] 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 base 6. Specifically, a stopper 12 is provided in the second U-shaped holder 11. 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 tension on the mounting platform 49 when it moves downward. On one side of the stopper 12, a first pressure sensor 13 is fixedly embedded to measure the tension 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. 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. At this time, 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 that is threadedly connected to the lifting plate 26 is rotatably connected in the lifting groove 25. The bottom end of the threaded rod 28 rotates and extends to the bottom of the connecting frame 8. By rotating the threaded rod 28, the lifting plate 26 can be driven to move up and down. Track grooves 22 are provided on the inner walls on both sides of the movable groove 7. Pin rods 23 are fixed on both sides of the connecting frame 8. The pin rods 23 slide in conjunction 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.

[0051] Specifically, during the shear test, threaded rod 28 is first rotated in the opposite direction, driving lifting plate 26 and baffle 27 downward, releasing the interference with second U-shaped holder 11. The second U-shaped holder 11 is then flipped 90°, aligning it vertically. Connecting frame 8 is then moved leftward, allowing countersunk screw 5 to engage threaded hole 17 on one side of bonding top material 16. Hydraulic cylinder 3 is then activated, pushing countersunk screw 5 and bonding top material 16 downward. The bonding top material 16 then drives the bonding base material 14 and mounting platform 49 downward. The first pressure sensor 13 detects and records the downward pull on mounting platform 49, representing the shear force.

[0052] Reference Figure 7-Figure 9In order to further improve the stability of the equipment, 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. In this way, 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 to the bottom of the mounting base 6, and a plurality of rectangular grooves 29 are provided in the connecting frame 8. 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 plates 30 and the rectangular grooves 29 can ensure that the movement of the connecting frame 8 is more stable.

[0053] Reference Figure 1 and Figure 2 In addition, in order to simulate the bonding effect under different environments, an environmental adaptability test structure is provided in the U-shaped frame 2. This 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.

[0054] Reference Figure 1 and Figure 2 The specific configuration of the environmental adaptability test structure is as follows: a simulation barrel 31 is provided inside the U-shaped frame 2, and this 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 slidingly 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 the other sliding plate 32 extends into this transmission groove 33 and is slidingly 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.

[0055] Reference Figure 1 and 2A hole is designed into the top of the simulation barrel 31 to allow the hydraulic cylinder 3 to move freely, allowing it to operate the specimen below. A carbon wire heater 35 and a cooling plate 36 are fixed to the top inner wall of the simulation barrel 31. These two devices control the temperature within the simulation barrel 31 to simulate different ambient temperature conditions. A temperature and humidity transmitter 37 is fixed through one side of the simulation barrel 31 to monitor the temperature and humidity within the simulation barrel 31 in real time, ensuring the accuracy of the test conditions. An annular liquid storage ring 38 is fixed to the inner wall of the simulation barrel 31. Multiple atomizing nozzles 39 are fixed to the side walls of this ring. These atomizing nozzles 39 are used to spray water mist into the simulation barrel 31 to simulate different humidity conditions. Furthermore, a liquid injection hose 40 is fixed through the simulation barrel 31. One end of the hose 40 is connected to the annular liquid storage ring 38, and the other end extends above the U-shaped frame 2 and is connected to an 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.

[0056] Specifically, during use, the motor drives the screw 34 to rotate, which in turn moves the simulated barrel 31 downward onto the mounting base 6. At this point, the second U-shaped holder 11, mounting platform 49, and adhesive top material 16 are all located within the simulated barrel 31. The carbon wire heater 35, cooling plate 36, and atomizing nozzle 39 are then activated as needed to control the temperature and humidity within the simulated barrel 31. Adhesion, shear adhesion, and impact adhesion can be tested individually under different temperatures and humidities to evaluate the adhesive's performance in different environments.

[0057] Reference Figure 5 In order to limit the mounting platform 49 in the second U-shaped base 11, a fixing plate 20 is added to the bottom of the second U-shaped base 11 on the side away from the stopper 12. A plurality of trapezoidal plates 19 are fixed on the top of the fixing plate 20. The top ends of these trapezoidal plates 19 slide and extend into the second U-shaped base 11, effectively limiting the mounting platform 49. At the same time, to maintain the stability of the trapezoidal plates 19 in the second U-shaped base 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 base 11. These tension springs 21 are sleeved on the outer walls of the trapezoidal plates 19, providing a certain degree of elastic support for the trapezoidal plates 19.

[0058] 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, providing strong data support for practical applications.

[0059] Example 2: Reference Figure 11 and Figure 12, based on the improvement of Example 1: One end of the rotating shaft 9 rotates through the connecting frame 8, and a gear 41 is fixed to its end. A rotating plate 42 is rotatably connected to one side of the connecting frame 8. The top of the rotating plate 42 is provided with an arcuate rack 45, which meshes with the gear 41. To drive the rotating plate 42 to swing back and forth, a slide 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 to one side of the rotating disk 46 at a position offset from the center. This pin 47 extends into the slide 48 and slides in engagement with the slide 48.

[0060] Specifically, when the motor drives rotating disk 46, it rotates pin 47. The interaction between pin 47 and chute 48 drives reciprocating rotation of rotating plate 42 and arcuate rack 45. The interaction between arcuate rack 45 and gear 41 drives gear 41 and rotating shaft 9 back and forth, in turn driving base 1 and its adhesive base material 14 and adhesive top material 16 to oscillate back and forth, impacting the adhesive surface. To observe whether the adhesive surface is damaged, the integrity of the adhesive surface after impact can be recorded during the test. By analyzing the relationship between impact energy and adhesive failure, we can assess the adhesive strength of the materials being tested.

[0061] refer to Figure 11 and Figure 12 In addition, a mechanism is provided to disengage the arcuate rack 45 from the gear 41, facilitating later adjustment of the position of the second U-shaped holder 11. Specifically, a sliding rod 43 is slidably connected to the top of the rotating plate 42, and the top of the sliding rod 43 is fixedly connected to the bottom of the arcuate rack 45. Furthermore, a spring 44 is secured between the bottom of the arcuate rack 45 and the top of the rotating plate 42, and is sleeved onto the outer wall of the sliding rod 43.

[0062] Specifically, under normal circumstances, the arc-shaped rack 45 moves upward under the elastic force of the spring 44 and engages 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.

[0063] A method for using a test device for detecting adhesive bond strength comprises the following steps:

[0064] S1. Use glue to bond the bonding base material 14 and the bonding top material 16, and then fix the bonding base material 14 on the mounting platform 49 through the 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 push the mounting platform 49 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;

[0065] S2. When a tensile bonding test is required, the threaded rod 28 is manually driven to rotate, and the threaded rod 28 drives the baffle 27 to rise through the lifting plate 26 until the top of the baffle 27 hits the bottom of the second U-shaped bracket 11, thereby making the second U-shaped bracket 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 bracket 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 subsequent detection. In addition, during the upward movement, the bonding base material 14 hits the second pressure sensor 18, and the second pressure sensor 18 detects the tensile force borne by the bonding base material 14. 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;

[0066] S3. When a shear bonding test is required, first calculate the bonding area between the bonding base material 14 and the bonding top material 16, then rotate the threaded rod 28 in the opposite direction to drive the lifting plate 26 and the baffle 27 downward to release the interference with the second U-shaped holder 11. The second U-shaped holder 11 can be flipped 90 degrees until the second U-shaped holder 11 touches the baffle 27. At this time, the second U-shaped holder 11 is arranged vertically. Then push the connecting frame 8 to move to the left until the pin 23 moves to the lower groove in the track groove 22, and the adjacent magnet block 24 generates a magnetic attraction on the connecting frame 8, thereby The cooperation between the two is used to limit the position of the connecting frame 8. At this time, the countersunk screw 5 just matches the threaded hole 17 on one side of the bonding top material 16. The hydraulic cylinder 3 pushes the countersunk screw 5 and the bonding top material 16 downward, and the bonding top material 16 drives the bonding base material 14 and the mounting platform 49 downward. The first pressure sensor 13 detects the downward tension on the mounting platform 49. During the test, the downward force is applied at a constant speed until the bonding area fails. The maximum shear force at failure is then recorded, and the shear bond strength is calculated based on the bonding area (shear bond strength = maximum shear force / contact area).

[0067] S4. When an impact bonding test is required, the rotating disk 46 is driven by the motor to rotate, and the rotating disk 46 drives the pin 47 to rotate. The cooperation of the pin 47 and the slide groove 48 drives the rotating plate 42 and the arc rack 45 to reciprocate. The cooperation of the arc 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 rack 45 moves up under the elastic force of the spring 44 and meshes with the gear 41. When tensile bonding test and shear bonding test are required, the arc rack 45 is pressed down to release the meshing of the arc rack 45 and the gear 41, which is convenient for the later adjustment of the position of the second U-shaped holder 11;

[0068] 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 its performance in different environments.

[0069] 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 all conventional means or common knowledge, so they will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience.

[0070] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection 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 to the output shaft of the hydraulic cylinder (3), and a countersunk screw (5) is clamped in the first U-shaped clamping seat (4), and 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) is provided in the mounting seat (6), a connecting frame (8) is slidably fitted in the movable groove (7), a rotating shaft (9) is rotatably connected in the connecting frame (8), and a second U-shaped holder (11) is provided above the rotating shaft (9); A tensile bonding strength testing structure is provided in the second U-shaped holder (11) and is used to perform a tensile bonding strength test on the bonding base material (14) and the bonding top material (16); A shear bonding strength test structure is provided in the mounting seat (6) and is used to perform a shear bonding strength test on the bonding base material (14) and the bonding top material (16); An environmental adaptability test structure is provided in the U-shaped frame (2) and is used to perform an environmental adaptability test on the bonding base material (14) and the bonding top material (16); The tensile bonding force testing structure includes a mounting platform (49) placed on the second U-shaped holder (11), the bonding base material (14) is detachably fixed on the top of the mounting platform (49), and second pressure sensors (18) are fixedly embedded on both sides of the inner wall of the top of the second U-shaped holder (11) for detecting the tensile force exerted on the bonding base material (14) when it moves upward. The top and one side of the bonding top material (16) are provided with threaded holes (17), and the threaded holes (17) are threadedly connected to the countersunk screw (5) for connecting the bonding top material (16) with the countersunk screw (5) and for pulling the bonding top material (16) through the hydraulic cylinder (3). The outer wall of the rotating shaft (9) is fixedly sleeved with a rotating seat (10), and the top of the rotating seat (10) is fixedly connected to the bottom end of the second U-shaped holder (11); The shear bonding strength test structure includes a stopper (12) fixed in the second U-shaped card seat (11), and the stopper (12) is used to block the mounting platform (49), so that the mounting platform (49) is pulled when the bonding top material (16) moves downward in the later stage. A first pressure sensor (13) is fixedly embedded on 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 baffle (27) to move upward, it contacts the bottom of the second U-shaped card seat (11) to make the second U-shaped card seat (11) horizontal. The lifting plate ( When the baffle (27) is driven downward by the movable member (26), the second U-shaped holder (11) after flipping 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 rotated and 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) slide with the 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 generate magnetic attraction with the adjacent magnet blocks (24) to stabilize the position of the connecting frame (8).

2. A test device for detecting adhesive bonding strength according to claim 1, characterized in that: The environmental adaptability test structure includes 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), one end of one of the sliding plates (32) is slidably connected to the 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 thread 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) is provided with a hole. 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), and 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 the outside world by a water pump for injecting water into the annular liquid storage ring (38); a temperature and humidity transmitter (37) is fixedly passed through one side of the simulation barrel (31) for detecting the temperature and humidity in the simulation barrel (31).

3. The test equipment for detecting adhesive bonding strength according to claim 2, characterized in that: A plurality of bolts (15) are provided in the bonding base material (14), and the bottom ends of the plurality of bolts (15) are threadedly extended into the mounting platform (49).

4. The test equipment for detecting adhesive bonding strength according to claim 3, characterized in that: 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 of the track groove (22) away from the upper groove, and the pin rod (23) is respectively slidably matched with the upper groove and the lower groove, so as to make the second pressure sensor (18) more stable when rising and falling. A plurality of U-shaped plates (30) are fixed to the bottom of the mounting seat (6), and 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).

5. The test equipment for detecting adhesive bonding strength according to claim 4, characterized in that: A fixing plate (20) is provided at the bottom of the side of the second U-shaped holder (11) away from the stop block (12), and a plurality of trapezoidal plates (19) are fixed on the top of the fixing plate (20), and the top ends of the plurality of trapezoidal plates (19) are slidably extended into the second U-shaped holder (11) to limit the mounting platform (49) in the second U-shaped holder (11), and 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).

6. The test equipment for detecting adhesive bonding strength according to claim 5, characterized in that: One end of the rotating shaft (9) rotates through the connecting frame (8) and is fixed with a gear (41), and one side of the connecting frame (8) is rotatably connected to a rotating plate (42), 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), and a slide groove (48) is provided in the rotating plate (42), and one side of the connecting frame (8) is rotatably connected to a rotating disk (46), and 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 slides with the slide groove (48), and 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.

7. The test equipment for detecting adhesive bonding strength according to claim 6, 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).

8. A method for using a test device for detecting adhesive bonding strength, applied to the test device for detecting adhesive bonding strength according to claim 7, characterized in that: The following steps are involved: S1. Use adhesive to connect the bonding base material (14) and the bonding top material (16). Bolts (15) fix the base 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 base 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 is 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 at a constant speed to the bonding area to break, 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 rotate back and forth, thereby driving the second U-shaped holder (11) to swing back and forth; the arc-shaped rack (45) is engaged with the gear (41) under the action of the spring (44), and can be disengaged when testing other forces; S5. During the environmental adaptability test, the motor drives the screw rod (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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