A device and process for testing the bonding strength of metal composite panels

Abstract

This invention discloses a metal composite panel bonding strength testing device, relating to the field of sheet metal tensile strength testing technology. It includes a vacuum suction cup fixture that uses negative pressure to hold the metal composite panel and a traveling frame that moves above the vacuum suction cup fixture. The device and testing process involve rotating two sets of support mechanisms from a horizontal to a vertical position via a traction mechanism. At this point, the two support frames open transparent protective curtains and cover both sides of the traveling frame. When the traveling frame moves towards the vacuum suction cup fixture to test the bonding strength at different locations on the metal composite panel, the two sets of support mechanisms will vertically abut against the nearest side of the traveling frame, ensuring that the protective curtain on the nearest side protects the tensile testing location of the vacuum suction cup fixture. This ensures stable isolation and protection for the tensile testing at that location on either side of the traveling frame, regardless of where it moves to.

Description

Technical Field

[0001] This invention relates to the field of tensile strength testing technology for sheet metal, specifically to a device and process for testing the bonding strength of metal composite panels. Background Technology

[0002] Metal composite sheets refer to sheets with one metal layer covered by another, achieving resource conservation and cost reduction without compromising corrosion resistance, mechanical strength, or other performance characteristics. Currently, metal composite sheets are widely used in industries such as petroleum, chemical, pharmaceutical, salt production, alkali production, water treatment, and food processing. When applied, metal composite sheets are bonded and fixed in designated locations. However, the bonding strength directly affects the performance of the metal composite sheet. Current technology often uses manual pull-out testing, but this method cannot obtain accurate tensile bonding strength values. Therefore, a suitable tensile testing device is needed to measure the bonding strength of metal composite sheets.

[0003] According to Chinese Patent No. CN113432984A, a tensile testing device and a tensile testing method are disclosed. The object to be tested is placed on the worktable of the base. By moving the walking structure, the force measuring mechanism is moved above the object to be tested. The pressing component presses and fixes the object to be tested. The tensile component is fixed to the components on the object to be tested. The tensile component applies a tensile force. The object to be tested will not move under the pressure of the pressing component. In this way, under the combined action and reaction forces, the force that can be applied to the object to be tested can be measured.

[0004] When the above technical solution is used, the base and force measuring mechanism are moved by the movement of the walking structure. However, the moving force measuring mechanism cannot provide stable isolation and protection for the movable tensile testing position. Therefore, we propose a metal composite plate bonding strength testing device and testing process. Summary of the Invention

[0005] The purpose of this invention is to provide a metal composite plate bonding strength testing device and testing process to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a metal composite plate bonding strength testing device, comprising a vacuum suction cup clamp for negative pressure adsorption to support the metal composite plate and a traveling frame that moves above the vacuum suction cup clamp. Linear guide rails are installed on both sides of the vacuum suction cup clamp, and a linear slider for lateral movement is connected to the top of the linear guide rails. The traveling frame is installed above the linear slider, and a vacuum suction cup hanger for pulling the plate to be tested is provided below the traveling frame.

[0007] The vacuum suction cup clamp has storage cavities on both sides. The inner wall of the storage cavity is fixed with a guide rod and a return spring sleeved on the outside of the guide rod through a reserved opening. A support mechanism is provided in the storage cavity. The support mechanism includes a sliding sleeve that slides with the guide rod. A bracket arranged sequentially from high to low is fixed on the upper side of the sliding sleeve. A support frame is rotatably connected to the bracket. A linkage arm is movably connected between two adjacent support frames. A protective curtain for safe observation and tensile testing is connected to the outside of the support frame.

[0008] The top of the walking frame is provided with a traction mechanism for controlling the folding or unfolding of the support mechanism. The traction mechanism includes a dual-axis motor installed on the top of the walking frame. A rotating drum is installed on the two output shafts of the dual-axis motor. A drive ring is sleeved on the outside of the rotating drum. A winding wheel for winding the traction rope is sleeved on the outside of the drive ring. One end of the traction rope is fixed to the support frame closest to the walking frame.

[0009] Preferably, the vacuum suction cup clamp has a sensing strip fixed to the outer wall surface near the storage cavity, and a support is fixed to the end of the support frame closest to the walking frame, with a proximity switch installed at one end of the support.

[0010] Preferably, the vacuum suction cup clamp is equipped with limiting rods at both ends for opening the protective curtain.

[0011] Preferably, the drive rings are symmetrically arranged on the rotating drum, and a sliding cavity is formed on the outer side of the drive ring. A slot is formed at an equal angle on one side wall of the sliding cavity.

[0012] Preferably, an inner ring that rotates with the sliding cavity is fixed to one side of the middle part of the take-up reel, and a magnetic tooth that matches the slot tooth is fixed at an equal angle to one side of the inner ring.

[0013] Preferably, one of the winding wheels on the same group of drums is wound with a traction rope clockwise, and the other winding wheel on the same group of drums is wound with a traction rope counterclockwise. The end of the clockwise wound traction rope is connected to the support frame on one side of the traveling frame, and the end of the counterclockwise wound traction rope is connected to the support frame on the other side of the traveling frame.

[0014] Preferably, the outer side of the rotating drum is fitted with a baffle that is installed on the top surface of the traveling frame. A groove is formed at an equal angle on one side of the baffle. An anti-slip protrusion is fixed on the surface of the winding wheel away from the drive ring. The distance between the anti-slip protrusion and the groove matches the depth of the slot.

[0015] Preferably, lifting motors are installed at both ends of the upper side of the walking frame, the output end of the lifting motor is connected to a lead screw, and the outer side of the lead screw is threaded to a crossbeam. A vacuum suction cup hanger for pulling the test plate is provided in the middle of the crossbeam.

[0016] Preferably, an adjustment groove is provided in the middle of the crossbeam, and a movable block is slidably connected inside the adjustment groove. One end of the movable block is threadedly connected to a fastening pin for pressing against the side wall of the crossbeam. A tension sensor is installed on the lower side of the movable block, and a fixing plate is installed on the lower side of the tension sensor. A C-shaped steel is fastened to the lower part of the fixing plate, and a suction cup for adsorbing the surface of the metal composite plate is installed on the C-shaped steel.

[0017] A process for testing the bonding strength of metal composite panels includes the following testing steps:

[0018] Step 1: Attach the metal composite plate to the specimen and use a vacuum suction cup clamp to apply negative pressure to the specimen.

[0019] Step 2: The linear slider drives the walking frame to move along the linear guide rail, so that the vacuum suction cup hanger is aligned with and adsorbs the metal composite plate to be tested;

[0020] Step 3: The horizontally placed support mechanism is vertically deployed by the traction rope of the traction mechanism. The deployment positions of the two support mechanisms are adjusted according to the movement position of the walking frame, so that the two sets of protective curtains cover both sides of the walking frame, making it convenient for personnel to observe safely.

[0021] Step 4: Use vacuum suction cup clamps and vacuum suction cup lifters to perform tensile testing on the bonding strength of the metal composite plate bonded to the specimen.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] The metal composite plate bonding strength testing device and testing process uses a traction mechanism to rotate two sets of support mechanisms from a horizontal to a vertical position. At this time, the two sets of support frames will open the transparent protective curtain and cover both sides of the walking frame. When the walking frame moves to the side of the vacuum suction cup clamp to test the bonding strength of the metal composite plate at different positions, the two sets of support mechanisms will make vertical abut against the nearest side according to the position of the walking frame. This allows the protective curtain opened on the nearest side to protect the tensile testing position of the vacuum suction cup clamp, ensuring that no matter which side of the vacuum suction cup clamp the walking frame moves to, it can provide stable isolation and protection for the tensile testing position on that side of the walking frame.

[0024] 2. The metal composite panel bonding strength testing device and testing process includes a traction mechanism. When the rotating dual-axis motor drives the two sets of support mechanisms to unfold vertically in sequence via the rotating drum, the first set of support mechanisms is vertically positioned while the second set is not. The continuing rotation of the dual-axis motor causes the drive ring of the first set to press the magnetic teeth on the side of the take-up wheel through the side wall of the slot, causing the magnetic teeth to separate from the slot. The anti-slip protrusions on the outer wall of the take-up wheel are also pressed into the groove on the side of the baffle. Therefore, the continuing rotation of the rotating drum causes the drive ring of the first set to rotate relative to the take-up wheel. At the same time, the take-up wheel of the second set can continue to pull the support frame of the second set of support mechanisms via the traction rope. Thus, both sets of support mechanisms can fully unfold the protective curtain when unfolding vertically in sequence. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the protective curtain of the present invention when unfolded;

[0026] Figure 2 This is a three-dimensional cross-sectional view of the protective curtain of the present invention when it is unfolded;

[0027] Figure 3 This is a schematic diagram of the folded three-dimensional structure of the support mechanism without protective curtain of the present invention;

[0028] Figure 4 This is a three-dimensional structural diagram of the support mechanism without protective curtain of the present invention.

[0029] Figure 5 This is a schematic diagram of the folded three-dimensional structure of the support mechanism of the present invention;

[0030] Figure 6 This is a schematic diagram of the unfolded three-dimensional structure of the support mechanism of the present invention;

[0031] Figure 7 This is a three-dimensional structural diagram of the traction mechanism of the present invention;

[0032] Figure 8 This is a three-dimensional exploded view of the traction mechanism of the present invention;

[0033] Figure 9 This is a three-dimensional structural diagram of the drive ring and take-up reel snap-fit ​​assembly of the present invention;

[0034] Figure 10 This is a three-dimensional cross-sectional diagram of the drive ring and take-up reel snap-fit ​​assembly of the present invention.

[0035] Figure 11 This is a three-dimensional structural diagram of the separation and snap-fit ​​of the drive ring and the take-up reel of the present invention;

[0036] Figure 12This is a three-dimensional cross-sectional schematic diagram of the separation and snap-fit ​​structure of the drive ring and take-up reel of the present invention;

[0037] Figure 13 This is a three-dimensional structural diagram of the vacuum suction cup lifting device of the present invention.

[0038] In the diagram: 1. Vacuum suction cup clamp; 101. Storage cavity; 102. Return spring; 103. Guide rod; 104. Sensing strip; 2. Linear guide rail; 3. Linear slider; 4. Walking frame; 401. Lifting motor; 402. Lead screw; 403. Crossbeam; 404. Adjustment groove; 5. Vacuum suction cup hanger; 501. Moving block; 502. Fastening pin; 503. Tension sensor; 504. Fixing plate; 505. C-shaped steel; 506. Suction cup; 6. Support mechanism; 601, sliding sleeve; 602, bracket; 603, support frame; 604, linkage arm; 605, support; 606, proximity switch; 7, traction mechanism; 701, dual-axis motor; 702, rotating drum; 703, drive ring; 704, sliding cavity; 705, slot; 706, winding reel; 707, magnetic tooth; 708, traction rope; 709, anti-slip protrusion; 710, baffle; 711, groove; 8, protective curtain; 9, limit rod. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figures 1-8 This invention provides a technical solution: a metal composite plate bonding strength testing device, comprising a vacuum suction cup clamp 1 for negative pressure adsorption to support the metal composite plate and a traveling frame 4 that moves above the vacuum suction cup clamp 1. Linear guide rails 2 are installed on both sides of the vacuum suction cup clamp 1, and a linear slider 3 for lateral movement is connected to the top of the linear guide rails 2. The traveling frame 4 is installed on the upper side of the linear slider 3, and a vacuum suction cup hanger 5 for pulling the plate to be tested is provided below the traveling frame 4. The traveling frame 4 is moved on the vacuum suction cup clamp 1 by the cooperation of the linear guide rails 2 and the linear slider 3, so that the vacuum suction cup hanger 5 can perform tensile testing on the bonding strength of the metal composite plate at different positions, and conveniently detect the bonding strength between the metal composite plate and the test piece at different positions.

[0041] The vacuum suction cup clamp 1 has storage cavities 101 on both sides. The inner wall of the storage cavity 101 is fixed with a guide rod 103 and a return spring 102 sleeved on the outside of the guide rod 103 through a reserved opening. A support mechanism 6 is provided in the storage cavity 101. The support mechanism 6 includes a sliding sleeve 601 that slides with the guide rod 103. A bracket 602 arranged from high to low is fixed on the upper side of the sliding sleeve 601. A support frame 603 is rotatably connected to the bracket 602. A linkage arm 604 is movably connected between two adjacent support frames 603. The hinge center line of two adjacent brackets 602 is parallel to the linkage arm 604. A protective curtain 8 for safe observation and tensile testing is connected to the outside of the support frame 603.

[0042] The top of the walking frame 4 is provided with a traction mechanism 7 for controlling the folding or unfolding of the support mechanism 6. The traction mechanism 7 includes a dual-axis motor 701 mounted on the top of the walking frame 4. A rotating drum 702 is mounted on the two output shafts of the dual-axis motor 701. A drive ring 703 is sleeved on the outside of the rotating drum 702. A winding wheel 706 for winding the traction rope 708 is sleeved on the outside of the drive ring 703. One end of the traction rope 708 is fixed to the support frame 603 closest to the walking frame 4. Limiting rods 9 for opening the protective curtain 8 are installed at both ends of the vacuum suction cup clamp 1.

[0043] A sensing strip 104 is fixed to the outer wall of the vacuum suction cup clamp 1 near the storage cavity 101. A support 605 is fixed to the end of the support frame 603 closest to the walking frame 4. A proximity switch 606 is installed at one end of the support 605. The proximity switch 606 adopts an inductive metal proximity sensor.

[0044] In practice, a long strip of metal composite plate is attached and fixed to the specimen. The long strip of metal composite plate specimen is then adsorbed by negative pressure using a vacuum suction cup clamp 1. Then, the linear guide rail 2 and the linear slider 3 work together to drive the traveling frame 4 to move in a straight line, so that the traveling frame 4 can move the vacuum suction cup hanger 5 to the designated position. Then, the lifting motor 401 is started to drive the lead screw 402 to rotate forward. The lead screw 402 drives the crossbeam 403 and the vacuum suction cup hanger 5 to move downward through the forward thread transmission, so that the suction cup 506 of the vacuum suction cup hanger 5 can adsorb the metal composite plate on the upper layer of the specimen. When the lifting motor 401 is started to drive the lead screw 402 to rotate in reverse, the lead screw 402 drives the crossbeam 403 and the vacuum suction cup hanger 5 to move upward through the reverse thread transmission, so that the bonding strength of the metal composite plate can be tested by tensile testing.

[0045] When performing a tensile test on the bonding strength of the metal composite panel, the dual-axis motor 701 of the traction mechanism 7 is activated to drive the two rotating drums 702 to rotate clockwise. This causes the rotating drums 702 to rotate the drive ring 703, which in turn presses against the magnetic teeth 707 of the take-up wheel 706 through the slot 705. This causes the take-up wheel 706 to rotate, tightening the clockwise and counterclockwise winding traction ropes 708. At this time, the traction ropes 708 pull the uppermost support frame 603 inside the storage cavity 101, causing the support frame 603 to... 03 The bracket 602 around the top of the sliding sleeve 601 rotates from a horizontal position to a vertical position. Since there is a linkage arm 604 connecting the two adjacent support frames 603, when one support frame 603 rotates and unfolds, the other support frames 603 will be rotated and unfolded together by the traction of the linkage arm 604. At this time, the support frames 603 on both sides of the walking frame 4 will open the transparent protective curtain 8 and cover both sides of the walking frame 4. Therefore, the opened protective curtain 8 can isolate and protect the bonding strength tensile test process of the metal composite plate.

[0046] When the traveling frame 4 moves towards one side of the vacuum suction cup clamp 1, it will move towards one of the support mechanisms 6. Therefore, when the support mechanism 6 closest to the traveling frame 4 rotates and unfolds, the support frame 603 closest to the traveling frame 4 will tilt and abut against the side edge of the top of the traveling frame 4 before it reaches a vertical position. At this time, the rotating drum 702 will continue to pull the traction rope 708 through the winding wheel 706. As a result, the traction rope 708 will cause the support frame 603 closest to the traveling frame 4 to flip, causing the support frame 603 to move the bottom sliding sleeve 601 along the guide rod 103 and stretch the return spring 102. When the support frame 603 of this support mechanism 6 activates the proximity switch 60 at one end of the support 605, When the support frame 603 reaches the upper edge of the receiving cavity 101, it will be placed vertically. At this time, the traction rope 708 will no longer cause the support frame 603 to flip, and the sensing part of one end of the proximity switch 606 will sense the sensing strip 104. When the support mechanism 6 on the other side of the walking frame 4 is flipped to be placed vertically, the support frame 603 of this support mechanism 6 closest to the walking frame 4 will not touch the top side edge of the walking frame 4. When the proximity switch 606 on the other side of the walking frame 4 also senses the proximity of the sensing strip 104, the proximity switches 606 on both sets of support mechanisms 6 will transmit the sensing signal to the external PLC controller, so that the PLC controller controls the dual-axis motor 701 to stop rotating.

[0047] Therefore, when the traveling frame 4 moves and changes position on the linear guide rail 2 and detects different positions of the metal composite plate through the vacuum suction cup hanger 5, the two sets of support mechanisms 6 will make vertical contact with the nearest side according to the position of the traveling frame 4, so that the protective curtain 8 opened on the nearest side can stably isolate and protect the stretch detection position of the vacuum suction cup hanger 5.

[0048] Please see Figures 7-12 The drive ring 703 is symmetrically arranged on the rotating drum 702, and a sliding cavity 704 is provided on the outer side of the drive ring 703. A slot 705 is provided at an equal angle on one side wall of the sliding cavity 704.

[0049] One side of the middle part of the winding reel 706 is fixed with an inner ring that rotates with the sliding cavity 704, and one side of the inner ring is fixed with a magnetic tooth 707 that matches the tooth groove of the slot 705. The slot 705 has a "V" shaped structure, and the magnetic tooth 707 is engaged with the slot 705 on the drive ring 703 by magnetic attraction.

[0050] One of the winding wheels 706 on the same group of drums 702 uses a traction rope 708 wound clockwise, and the other winding wheel 706 on the same group of drums 702 uses a traction rope 708 wound counterclockwise. The end of the clockwise wound traction rope 708 is connected to the support frame 603 on one side of the traveling frame 4, and the end of the counterclockwise wound traction rope 708 is connected to the support frame 603 on the other side of the traveling frame 4. Therefore, the rotating drum 702 can drive the two sets of support mechanisms 6 to unfold or fold through the two sets of clockwise and counterclockwise wound traction ropes 708 respectively.

[0051] A baffle 710 is fitted on the outer side of the rotating drum 702 and installed on the top surface of the traveling frame 4. A groove 711 is provided on one side of the baffle 710 at an equal angle. An anti-slip protrusion 709 is fixed on the surface of the winding wheel 706 away from the drive ring 703. The distance between the anti-slip protrusion 709 and the groove 711 matches the depth of the slot 705. An anti-detachment rod is vertically fixed on the surface of the baffle 710 near the lower side of the winding wheel 706. The anti-detachment rod is used to prevent the traction rope 708 from detaching from the winding wheel 706.

[0052] In specific implementation, when the rotating dual-axis motor 701 drives the two sets of support mechanisms 6 to vertically unfold in a sequential manner through the two sets of rotating drums 702, when the first set of support mechanisms 6 has completed its vertical placement but the second set of support mechanisms 6 has not, the continuously rotating dual-axis motor 701 can no longer pull the support frame 603 of the first set of support mechanisms 6 through the first set of winding wheels 706 and traction ropes 708. At this time, the continuously rotating dual-axis motor 701 can pull the support frame 603 of the second set of support mechanisms 6 through the second set of winding wheels 706 and traction ropes 708 to cause it to flip. During this process, when the first set of drive rings 703 rotates, it will press the magnetic teeth 7 on the side of the winding wheel 706 through the side wall of the "V"-shaped groove 705. 07, the magnetic tooth 707 separates from the slot 705, and the magnetic tooth 707 moves along the drive ring 703 into the sliding cavity 704. At this time, the anti-slip protrusion 709 on the outer wall of the take-up wheel 706 is squeezed into the groove 711 on one side of the baffle 710. Therefore, the rotating drum 702 will drive the first set of drive rings 703 and take-up wheel 706 to rotate relative to each other. And through the engagement of the anti-slip protrusion 709 and the groove 711, the reverse rotation of the take-up wheel 706 can be prevented, which would cause the traction rope 708 to loosen and reverse. Then, when the first set of take-up wheels 706 remains stationary, the second set of rotating drive rings 703 can also pull the support frame 603 of the second set of support mechanism 6 through the second set of take-up wheels 706 and traction rope 708.

[0053] When the dual-axis motor 701 drives the drum 702 to stop rotating, the magnetic teeth 707 magnetically engage with the slots 705 of the drive ring 703, facilitating the combination and engagement of the drive ring 703 and the winding wheel 706. When the dual-axis motor 701 drives the drum 702 to reverse, the two sets of winding wheels 706 can unwind the traction rope 708 to fold the two sets of support mechanisms 6 horizontally, facilitating the opening of the protective curtain 8.

[0054] Please see Figures 1-4 and Figure 13 Lifting motors 401 are installed at both ends of the upper side of the walking frame 4. The output end of the lifting motor 401 is connected to a lead screw 402, and the outer side of the lead screw 402 is threaded to a crossbeam 403. A vacuum suction cup hanger 5 for pulling the test plate is provided in the middle of the crossbeam 403.

[0055] An adjustment groove 404 is provided in the middle of the crossbeam 403. A moving block 501 is slidably connected inside the adjustment groove 404. One end of the moving block 501 is threadedly connected to a fastening pin 502 for pressing against the side wall of the crossbeam 403. A tension sensor 503 is installed on the lower side of the moving block 501. A fixing plate 504 is installed on the lower side of the tension sensor 503. The tension sensor 503 is a load cell of model JLBS-1. A C-shaped steel 505 is fastened to the lower part of the fixing plate 504. A suction cup 506 for adsorbing the surface of the metal composite plate is installed on the C-shaped steel 505. The suction cup 506 is a vacuum suction cup of model ZPT.

[0056] In practice, the position of the moving block 501 in the adjusting groove 404 is adjusted according to the position of the metal composite plate and the specimen on the vacuum suction cup fixture 1. Then, the fastening pin 502 is rotated to press against the side wall of the crossbeam 403, so that the suction cup 506 can be aligned with the surface of the metal composite plate. This makes it convenient to adjust the position of the vacuum suction cup hanger 5 according to the placement of the metal composite plate. When the lead screw 402 drives the crossbeam 403 and the vacuum suction cup hanger 5 to move upward and pull the metal composite plate, the tension sensor 503 between the moving block 501 and the fixed plate 504 can detect the tension value. Therefore, the maximum bonding strength value when the metal composite plate and the specimen are stretched and separated can be detected by the tension sensor 503.

[0057] A process for testing the bonding strength of metal composite panels includes the following testing steps:

[0058] Step 1: Attach the metal composite plate to the specimen and use vacuum suction cup clamp 1 to perform negative pressure adsorption on the specimen of the metal composite plate;

[0059] Step 2: The linear slider 3 drives the walking frame 4 to move along the linear guide rail 2, so that the vacuum suction cup hanger 5 is aligned with and adsorbs the metal composite plate to be tested;

[0060] Step 3: The horizontally placed support mechanism 6 is vertically deployed by the traction rope 708 of the traction mechanism 7. The deployment positions of the two sets of support mechanisms 6 are adjusted according to the movement position of the walking frame 4, so that the two sets of protective curtains 8 cover both sides of the walking frame 4, making it convenient for personnel to observe safely.

[0061] Step 4: Use vacuum suction cup clamp 1 and vacuum suction cup hanger 5 to perform tensile testing on the bonding strength of the metal composite plate bonded to the specimen.

[0062] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0063] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for testing the bonding strength of a metal composite plate, comprising a vacuum suction cup clamp (1) for negative pressure adsorption of the metal composite plate and a traveling frame (4) that moves above the vacuum suction cup clamp (1), wherein linear guide rails (2) are installed on both sides of the vacuum suction cup clamp (1), and a linear slider (3) for lateral movement is connected to the top of the linear guide rails (2), the traveling frame (4) is installed on the upper side of the linear slider (3), and a vacuum suction cup hanger (5) for pulling the plate to be tested is provided below the traveling frame (4), characterized in that: The vacuum suction cup clamp (1) has storage cavities (101) on both sides. The inner wall of the storage cavity (101) is fixed with a guide rod (103) and a return spring (102) sleeved on the outside of the guide rod (103) through a reserved opening. A support mechanism (6) is provided in the storage cavity (101). The support mechanism (6) includes a sliding sleeve (601) that slides with the guide rod (103). A bracket (602) arranged from high to low is fixed on the upper side of the sliding sleeve (601). A support frame (603) is rotatably connected to the bracket (602). A linkage arm (604) is movably connected between two adjacent support frames (603). A protective curtain (8) for safe observation of tensile testing is connected to the outside of the support frame (603). The top of the walking frame (4) is provided with a traction mechanism (7) for controlling the folding or unfolding of the support mechanism (6). The traction mechanism (7) includes a dual-axis motor (701) installed on the top of the walking frame (4). A rotating drum (702) is installed on the two output shafts of the dual-axis motor (701). A drive ring (703) is sleeved on the outside of the rotating drum (702). A winding wheel (706) for winding the traction rope (708) is sleeved on the outside of the drive ring (703). One end of the traction rope (708) is fixed to the support frame (603) closest to the walking frame (4). The vacuum suction cup clamp (1) has a sensing strip (104) fixed on the outer wall near the storage cavity (101), and a support (605) is fixed at the end of the support frame (603) closest to the walking frame (4), and a proximity switch (606) is installed at one end of the support (605). The drive ring (703) is symmetrically arranged on the rotating drum (702), and a sliding cavity (704) is provided on the outer side of the drive ring (703). A slot (705) is provided at an equal angle on one side wall of the sliding cavity (704). The winding wheel (706) has an inner ring fixed on one side of its middle section that rotates with the sliding cavity (704), and a magnetic tooth (707) that matches the tooth groove of the slot (705) is fixed on one side of the inner ring at an equal included angle. One of the winding wheels (706) on the same group of drums (702) is wound with a traction rope (708) clockwise, and the other winding wheel (706) on the same group of drums (702) is wound with a traction rope (708) counterclockwise. The end of the clockwise wound traction rope (708) is connected to the support frame (603) on one side of the walking frame (4), and the end of the counterclockwise wound traction rope (708) is connected to the support frame (603) on the other side of the walking frame (4). The outer side of the rotating drum (702) is fitted with a baffle (710) that is installed on the top surface of the walking frame (4). A groove (711) is provided on one side of the baffle (710) at an equal angle. An anti-slip protrusion (709) is fixed on the surface of the winding wheel (706) away from the drive ring (703). The distance between the anti-slip protrusion (709) and the groove (711) matches the depth of the slot (705).

2. The metal composite plate bonding strength testing device according to claim 1, characterized in that: The vacuum suction cup clamp (1) is equipped with limiting rods (9) at both ends for opening the protective curtain (8).

3. The metal composite plate bonding strength testing device according to claim 1, characterized in that: The upper two ends of the walking frame (4) are equipped with lifting motors (401), the output end of the lifting motor (401) is connected to a lead screw (402), and the outer side of the lead screw (402) is threaded to a crossbeam (403). The middle part of the crossbeam (403) is provided with a vacuum suction cup hanger (5) for pulling the test plate.

4. The metal composite plate bonding strength testing device according to claim 3, characterized in that: An adjustment groove (404) is provided in the middle of the crossbeam (403). A moving block (501) is slidably connected inside the adjustment groove (404). One end of the moving block (501) is threadedly connected to a fastening pin (502) for pressing against the side wall of the crossbeam (403). A tension sensor (503) is installed on the lower side of the moving block (501). A fixing plate (504) is installed on the lower side of the tension sensor (503). A C-shaped steel (505) is fastened to the lower part of the fixing plate (504). A suction cup (506) for adsorbing the surface of the metal composite plate is installed on the C-shaped steel (505).

5. A process for testing the bonding strength of metal composite panels, employing the metal composite panel bonding strength testing device described in any one of claims 1-4, characterized in that, The testing steps include the following: Step 1: Attach the metal composite plate to the specimen and use a vacuum suction cup clamp (1) to perform negative pressure adsorption on the specimen of the metal composite plate; Step 2: The linear slider (3) drives the walking frame (4) to move along the linear guide rail (2), so that the vacuum suction cup hanger (5) is aligned with and adsorbs the metal composite plate to be tested; Step 3: The horizontally placed support mechanism (6) is vertically deployed by the traction rope (708) of the traction mechanism (7), and the two sets of support mechanisms (6) are adjusted according to the moving position of the walking frame (4) so ​​that the two sets of protective curtains (8) cover the two sides of the walking frame (4) for personnel to conduct safety observation. Step 4: Use vacuum suction cup clamp (1) and vacuum suction cup hanger (5) to perform tensile testing on the bonding strength of the metal composite plate bonded to the specimen.

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