A device for testing the flowability of an adhesive for steel sheet

Abstract

The utility model relates to the technical field of adhesive performance test, especially relates to a steel plate surface adhesive flowability testing device. The device includes base platform, hinge, electric push rod, steel plate, temperature control platform, glue dispensing mould and high speed camera, the hinge fixed end is connected with base platform, and the movable end is connected with the steel plate edge, the both ends of electric push rod are rotatably connected with base platform and the side of steel plate far from hinge through pin shaft, temperature control platform is fixedly connected with the bottom of steel plate, glue dispensing mould is placed on the top of steel plate, and high speed camera is arranged in the front of the operation side of steel plate. The device can accurately adjust and stabilize the inclination angle of steel plate through electric push rod and hinge, the temperature of steel plate is regulated by temperature control platform to restore real working condition, glue dispensing mould ensures the uniformity of initial adhesive strip specification, and high speed camera dynamically captures the flow process. It can improve the testing accuracy and reliability, adapt to the testing demand of multiple scenes, and provide support for adhesive performance evaluation.

Description

Technical Field

[0001] This utility model relates to the field of adhesive performance testing technology, and in particular to a device for testing the flowability of adhesives on steel plate surfaces. Background Technology

[0002] The flowability of adhesives on steel plate surfaces (specifically reflected in flow length, spreading area, and flow rate) is a key performance parameter that directly affects the workability, final bonding quality (such as adhesive layer thickness uniformity and edge filling effect), and appearance. Especially in practical applications such as automobile manufacturing, shipbuilding, and steel structure assembly, where adhesives are often applied to inclined or vertical steel plates, the precise control of adhesive flowability is crucial. However, existing adhesive flowability testing techniques have significant shortcomings: First, they lack specificity. Existing test methods (such as the sloping flow test ASTM D2202) are mostly applicable to evaluating the sag of sealants on standard substrates such as aluminum plates and cement boards, without fully considering the influence of the unique properties of steel plate surfaces, such as roughness, surface energy, and thermal conductivity, on the flow behavior of adhesives. Second, they lack quantification. Traditional test methods often only measure the final flow length, making it difficult to capture the dynamic changes during the flow process and obtain the initial flow time and flow at different time points. Third, the controllability is poor. Existing testing devices lack precision and flexibility in controlling key parameters affecting flowability, such as test angle, temperature (including steel plate temperature and ambient temperature), and initial dimensions of the adhesive strip (width and thickness). Fourth, the simulation of working conditions is weak, failing to effectively reproduce the working conditions in actual applications (such as steel plate preheating, specific tilt angle, and ambient temperature and humidity). Fifth, the efficiency and accuracy are low. The testing process relies on manual visual inspection and scribing measurement, which not only easily introduces human error but also results in low testing efficiency. Utility Model Content

[0003] To address the technical problems of existing adhesive flowability testing techniques, such as poor specificity, insufficient quantification, poor controllability, weak simulation of working conditions, and low efficiency and accuracy, this utility model provides a device for testing the flowability of adhesives on steel plate surfaces. Therefore, the present invention provides the following technical solution: A device for testing the flowability of adhesives on steel plates includes a base platform, a hinge, an electric actuator, and a steel plate. The fixed end of the hinge is fixedly mounted on the base platform, and the movable end of the hinge is connected to one edge of the steel plate. A temperature control platform is fixedly mounted on the bottom of the steel plate, and a dispensing mold is placed on the top of the steel plate. The cylinder end of the electric actuator is rotatably connected to the base platform via a pin, and the output end of the electric actuator is rotatably connected to the side of the steel plate away from the hinge via a pin. A high-speed camera is positioned in front of the side of the steel plate facing the operating side.

[0004] Furthermore, a scale is provided on one side of the hinge, and an angle sensor is installed on the hinge's pivot.

[0005] Furthermore, the dispensing mold has a bottomless frame structure, with its horizontal part at the top and its vertical part at the bottom. The ends of the two parts are respectively joined together and set at right angles, and the horizontal part and the vertical part enclose each other to form a channel for receiving adhesive.

[0006] Furthermore, it also includes a frame and a laser emitter, which is mounted on the frame and located directly above the dispensing mold.

[0007] Furthermore, a level is installed on the base platform, and leveling feet are threaded onto the bottom of the base platform.

[0008] Furthermore, a stop is installed on the base platform at the end of the steel plate near the hinge.

[0009] Furthermore, the temperature control platform integrates an electric heating element and a temperature sensor, wherein both the electric heating element and the temperature sensor are electrically connected to the control unit of the temperature control platform; the electric heating element and the steel plate are connected by thermal conduction.

[0010] Furthermore, the heating element is a heating film or a PTC.

[0011] Advantages and positive effects of this utility model: The electric push rod is rotatably connected to the base platform and the steel plate away from the hinge through pins at both ends. After starting, it can push the steel plate to flexibly adjust the tilt angle around the hinge axis. Compared with manual adjustment, it can accurately lock the target angle. Moreover, the mechanical structure of the hinge and the electric push rod can ensure the stability of the steel plate angle during the test, avoiding the influence of the adhesive flow trajectory due to angle deviation. It is suitable for adhesive application angle testing in different scenarios such as automobiles and steel structures.

[0012] The temperature control platform fixed at the bottom of the steel plate can specifically regulate the temperature of the steel plate. Through heat conduction, the steel plate is maintained at the preset temperature, which solves the problem that traditional tests ignore the influence of steel plate temperature on adhesive flow. This makes the test conditions closer to the actual steel plate temperature environment during adhesive application, ensuring that the test results can reflect the flow characteristics of the adhesive at real temperature.

[0013] The dispensing mold placed on top of the steel plate can standardize the shape and size of the initial adhesive strip, avoiding inconsistencies in the width, thickness, and length of the adhesive strip caused by manual application. This ensures that the initial adhesive strip specifications are uniform for each test, providing fair initial conditions for comparing the flowability of different batches and types of adhesives, and reducing test errors caused by differences in the initial adhesive strip.

[0014] A high-speed camera positioned in front of the operating side of the steel plate can capture the dynamic process of adhesive flowing on the steel plate surface in real time. Compared with the traditional method of only measuring the "final flow length", it can record the trajectory changes of the entire flow process, providing complete visual data support for subsequent analysis of key parameters such as flow rate and flow trend, making the test data more comprehensive and better reflecting the true law of adhesive flow. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of a steel plate surface adhesive flowability testing device provided by this utility model.

[0017] Figure 2 A schematic diagram of the dispensing mold structure for a steel plate surface adhesive flowability testing device provided by this utility model.

[0018] In the diagram: 101, base platform; 102, level; 103, leveling feet; 104, electric push rod; 105, steel plate; 106, dispensing mold; 107, laser emitter; 108, high-speed camera; 109, temperature control platform; 110, data analysis terminal; 111, stop block; 112, horizontal section; 113, vertical section; 114, channel. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.

[0020] This invention provides a device for testing the flowability of adhesives on steel plate surfaces, such as... Figure 1As shown, the device includes a base platform 101, a hinge, an electric actuator 104, and a steel plate 105. The base platform 101 provides stable support for the device. The fixed end of the hinge is fixedly mounted on the base platform 101, and the movable end of the hinge is connected to one edge of the steel plate 105. A scale is provided on one side of the hinge, and an angle sensor is installed on the hinge's pivot. The scale on one side of the hinge can visually display the initial angle state, while the angle sensor on the pivot is used to accurately capture angle data. The cylinder end of the electric actuator 104 is rotatably connected to the base platform 101 via a pin, and the output end of the electric actuator 104 is rotatably connected to the side of the steel plate 105 away from the hinge via a pin. A stop block 111 is installed on the base platform 101 at the end of the steel plate 105 closest to the hinge. The stop block 111 is used to hold the steel plate 105 in place to prevent it from shifting. When the electric push rod 104 is activated, its output end can extend and retract to push or pull the steel plate 105 to rotate around the hinge axis, thereby adjusting the tilt angle of the steel plate 105. This can simulate the adhesive application environment of tilted or vertical steel plates in scenarios such as automobile manufacturing and steel structure assembly, solving the problem that traditional tests are difficult to match with actual working conditions, and providing test conditions that are more in line with actual applications for evaluating the flowability of adhesives on the surface of steel plates.

[0021] A level 102 is installed on the base platform 101, and a leveling foot 103 is threaded onto the bottom of the base platform 101. This ensures that the base platform 101 is level.

[0022] A temperature control platform 109 is fixedly installed at the bottom of the steel plate 105. The temperature control platform 109 integrates an electric heating element and a temperature sensor, both of which are electrically connected to the control unit of the temperature control platform 109. The electric heating element is thermally conductively connected to the steel plate 105, and the electric heating element is either a heating film or a PTC. Whether it is a heating film or a PTC, it forms a direct thermal conductive connection with the steel plate 105, and the generated heat is efficiently transferred to the steel plate 105 through conduction, causing the steel plate temperature to gradually approach the target value. When the temperature sensor detects that the steel plate temperature has reached the target value, the control unit further adjusts the working state of the electric heating element (the heating film is powered off or its power is reduced, while the PTC maintains low power based on its own characteristics). If the temperature fluctuates, the sensor provides real-time feedback, and the control unit repeats the above adjustment process to ensure that the temperature of the steel plate 105 remains stable within the set range throughout the test, providing a controllable temperature environment for the adhesive flow. On the one hand, the direct thermal conduction connection between the two types of heating elements and the steel plate 105 can reduce heat loss, improve thermal efficiency, shorten the time for the steel plate to heat up to the target temperature, and improve testing efficiency. On the other hand, the self-limiting temperature characteristic of the PTC comes with over-temperature protection, and the precise power-off control of the heating film and the control unit can avoid problems such as steel plate deformation and premature curing of adhesives caused by temperature runaway, ensuring the stability of the testing process, while reducing the intensity of manual monitoring, reducing test errors caused by operational mistakes, and making the obtained data such as flow length and flow speed more reliable.

[0023] like Figure 2 As shown, a dispensing mold 106 is placed on the top of the steel plate 105; the dispensing mold 106 has a bottomless frame structure, with its horizontal part 112 located above and its vertical part 113 located below. The ends of the two parts are respectively connected and set at right angles, and the horizontal part 112 and the vertical part 113 enclose each other to form a channel 114 for receiving adhesive.

[0024] A high-speed camera 108 is positioned in front of the side of the steel plate 105 facing the operation side. The high-speed camera 108 is connected to the data analysis terminal 110 via a data cable. The system also includes a frame and a laser emitter 107, which is mounted on the frame and positioned directly above the dispensing mold 106.

[0025] Working principle: The operator observes the level 102 and rotates the corresponding leveling feet 103: the foot on the higher side is rotated down and the foot on the lower side is rotated up until the level 102 indicates that it is level, ensuring that the base platform 101 is in a level state and avoiding interference from the tilt of the base to subsequent tests.

[0026] The temperature control platform 110 is activated, and its integrated temperature sensor collects the temperature data of the steel plate 105 in real time and transmits it to the control unit. The control unit compares the temperature with the preset temperature and drives the heating element (heating film or PTC) to work: when the temperature is lower than the target value, the heating element transfers heat to the steel plate 105 through heat conduction. After the temperature reaches the target value, the control unit adjusts the power of the element (PTC controls the temperature autonomously based on its self-limiting temperature characteristics, while the heating film reduces the power or cuts off the power) to maintain the stable temperature of the steel plate.

[0027] The electric push rod 104 is activated, pushing the steel plate 105 to rotate around the hinge axis; the angle sensor on the hinge axis provides real-time feedback on the tilt angle, which is verified in conjunction with the scale on one side of the hinge until the steel plate reaches the preset tilt angle. The electric push rod then locks its position to ensure that the angle of the steel plate remains unchanged during the test.

[0028] Laser emitter 107 is activated, emitting a 650nm red laser to project a positioning crosshair onto the surface of steel plate 105. Dispensing mold 106 is placed on steel plate 105 according to the position of this crosshair, typically aligning the crosshair 2-4cm from the upper edge of the steel plate, i.e., the pre-application location. The operator injects adhesive into the channel 114 of dispensing mold 106. After the mold is filled, it is removed, forming an initial adhesive strip of uniform size and regular shape on the steel plate surface, avoiding initial dimensional errors caused by manual application.

[0029] Adjust the viewing angle of the high-speed camera 108 to ensure it is fixed directly in front of the steel plate and perpendicular to its surface (adjust the viewing angle synchronously if the steel plate is tilted to avoid image distortion); turn on the coaxial light source to provide uniform and stable illumination, highlighting the contrast between the adhesive strip outline and the steel plate surface, and preventing blurring of the adhesive strip boundary due to uneven lighting. Set the acquisition parameters according to the test requirements, selecting either high-speed continuous shooting at 120fps or automatic shooting mode at fixed time intervals (e.g., every 5 seconds, 30 seconds, or 1 minute). The camera captures the flow process of the adhesive on the steel plate surface in real time and transmits the image sequence to the data analysis terminal 109 via a data cable.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for testing the flowability of adhesives on steel plates, characterized in that, The system includes a base platform (101), a hinge, an electric push rod (104), and a steel plate (105). The fixed end of the hinge is fixedly installed on the base platform (101), and the movable end of the hinge is connected to one edge of the steel plate (105). A temperature control platform (109) is fixedly installed at the bottom of the steel plate (105), and a glue mold (106) is placed on the top of the steel plate (105). The cylinder end of the electric push rod (104) is rotatably connected to the base platform (101) via a pin, and the output end of the electric push rod (104) is rotatably connected to the side of the steel plate (105) away from the hinge via a pin. A high-speed camera (108) is located in front of the side of the steel plate (105) facing the operation side.

2. The steel sheet surface adhesive flowability test device according to claim 1, characterized by The hinge has a scale on one side, and an angle sensor is installed on the hinge shaft.

3. The apparatus for testing the flowability of adhesives on steel plates according to claim 1, characterized in that, The dispensing mold (106) has a bottomless frame structure, with its horizontal part (112) located above and its vertical part (113) located below. The ends of the two parts are respectively connected and set at right angles. The horizontal part (112) and the vertical part (113) enclose each other to form a channel (114) for receiving adhesive.

4. The apparatus for testing the flowability of adhesives on steel plates according to claim 1, characterized in that, It also includes a frame and a laser emitter (107) mounted on the frame and located directly above the dispensing mold (106).

5. The apparatus for testing the flowability of adhesives on steel plates according to claim 1, characterized in that, A level (102) is installed on the base platform (101), and a leveling foot (103) is threaded onto the bottom of the base platform (101).

6. The apparatus for testing the flowability of adhesives on steel plates according to claim 1, characterized in that, A stop (111) is installed on the base platform (101) and at the end of the steel plate (105) near the hinge.

7. The apparatus for testing the flowability of adhesives on steel plates according to claim 1, characterized in that, The temperature control platform (109) integrates an electric heating element and a temperature sensor, wherein the electric heating element and the temperature sensor are electrically connected to the control unit of the temperature control platform (109); the electric heating element and the steel plate (105) are connected by thermal conduction.

8. The apparatus for testing the flowability of adhesives on steel plates according to claim 7, characterized in that, The heating element is a heating film or a PTC.

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