Adhesive fluidity testing device

Abstract

The invention relates to the technical field of adhesive fluidity detection, in particular to an adhesive fluidity testing device which comprises a detection table, a viscosity cup and the like. And a viscosity cup is placed on the detection table. According to the invention, basic flowability test of the adhesive, flowability test of the adhesive dripping on different materials, relation model test of the flowability of the adhesive dripping on different materials under established temperature conditions, and test of relation model of the flowability of the adhesive, dripping amount and coverage under board bonding action are integrated; testing of relation models of adhesive fluidity, dripping amount, coverage range and bonded materials under the plate bonding action and bonding strength testing are integrated, testing items of the testing device are enriched, and the practicability of the testing device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of adhesive detection, in particular to an adhesive fluidity testing device. Background Art

[0002] In the prior art, a viscosity cup is often used to test the fluidity of an adhesive. The principle is to pour a certain amount of adhesive into the viscosity cup, allow the adhesive to flow down through the viscosity cup into a receiving cup, and manually measure the time it takes for the adhesive to flow from the beginning to complete outflow using a stopwatch. The viscosity value of the adhesive is then converted using a calculation formula, thereby testing the adhesive fluidity. However, in this process, there is always a delay when manually using a stopwatch, resulting in a large error in the measured time, greatly reducing the accuracy of the data. In addition, when the same adhesive is measured multiple times, the temperature of the adhesive itself will change during the flow process, resulting in a change in the viscosity value of each measurement, resulting in a deviation between the calculated viscosity and the actual viscosity of the adhesive, reducing the accuracy of the test results.

[0003] In summary, the present application proposes an adhesive fluidity testing device to improve the above-mentioned technical problems. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art in which, when using a viscosity cup to detect adhesive fluidity, the delay in manual timing and the temperature change during the adhesive flow process lead to large errors in multiple measurement results, which seriously affect the test accuracy and data precision, the present invention provides an adhesive fluidity testing device.

[0005] The technical solution of the present invention is: an adhesive fluidity testing device, comprising a testing platform and a viscosity cup; the viscosity cup is placed on the testing platform; it also comprises a first driving assembly, a first fixing frame, a receiving cup, a photoelectric sensor, a telescopic plate and an auxiliary thermal insulation assembly; the first driving assembly is installed on the testing platform; the first fixing frame is connected to the first driving assembly; the first fixing frame is driven up and down by the first driving assembly; the receiving cup is plugged into the first fixing frame; the receiving cup is located directly below the viscosity cup; a light-transmitting plate is provided on the left and right sides of the receiving cup; two left-right symmetrical photoelectric sensors for improving measurement accuracy are fixed to the first fixing frame; the two photoelectric sensors are respectively located on the left and right sides of the receiving cup; the telescopic plate is fixed to the testing platform; the telescopic plate is attached to the lower side of the viscosity cup; a limit switch is provided in the telescopic plate; a timer is provided on the testing platform, and the timer is electrically connected to the limit switch built into the telescopic plate; an auxiliary thermal insulation assembly for keeping the adhesive temperature constant is installed on the testing platform.

[0006] Furthermore, in the above-mentioned adhesive fluidity testing device, the auxiliary insulation component includes an air heater, a first electrically controlled three-way valve and a first air pipe; an insulation chamber is opened in the first fixed frame, and the insulation chamber is annular in shape; an exhaust hole is opened on the first fixed frame, and the exhaust hole is connected to the insulation chamber; an air heater is fixed on the testing table; the air inlet of the air heater is connected to an external air pump; the air outlet of the air heater is connected to the first electrically controlled three-way valve; the first electrically controlled three-way valve is connected to the first air pipe; the first air pipe is connected to the insulation chamber.

[0007] Furthermore, the above-mentioned adhesive fluidity testing device also includes a drop test assembly for testing the fluidity of adhesive on different objects; the drop test assembly includes an automatic dispensing valve, a dropper, a substrate and a block; an automatic dispensing valve for controlling the outflow of adhesive is fixed to the lower side of the first fixed frame; the liquid inlet of the automatic dispensing valve passes through the bottom of the first fixed frame; the liquid outlet of the automatic dispensing valve is connected to the dropper; a connecting hole is provided at the bottom of the receiving cup; a block is connected to the bottom of the receiving cup through a spring; the shape of the block is the same as the shape and diameter of the connecting hole; a number of top blocks are provided on the upper side of the automatic dispensing valve; the top block passes through the connecting hole, and the top block fits with the bottom of the block, and the receiving cup is connected to the liquid inlet of the automatic dispensing valve; a substrate for detecting the fluidity of adhesive on objects is placed on the testing table; the center of the substrate is aligned with the center of the dropper.

[0008] Furthermore, a limiting block for positioning the substrate is provided in the middle of the detection platform; the limiting block is U-shaped; and the substrate is located in the middle of the limiting block.

[0009] Furthermore, the receiving cup is made of a copper alloy material having good thermal conductivity and corrosion resistance.

[0010] Furthermore, the above-mentioned adhesive fluidity testing device also includes a simulated bonding system; the simulated bonding system includes a second drive component, a suction plate, a second electrically controlled three-way valve, a connecting pipe and a transparent plate; a second drive component is installed on the testing table; the second drive component is connected to the suction plate; the suction plate is driven to move back and forth and up and down by the second drive component; a cavity is provided in the suction plate; a plurality of suction holes are provided at the bottom of the suction plate, and all the suction holes are connected to the cavity; the cavity of the suction plate is connected to a connecting pipe; the connecting pipe is connected to a second electrically controlled three-way valve; the second electrically controlled three-way valve is fixed on the second drive component; one end of the second electrically controlled three-way valve is connected to an external air pump; a transparent plate for simulating the bonding process in the actual production process is adsorbed on the lower side of the suction plate.

[0011] Furthermore, the adhesive fluidity testing device further includes a second air pipe; a second air pipe for heating the transparent plate is connected between the first electrically controlled three-way valve and the second electrically controlled three-way valve.

[0012] Furthermore, a convex ring is provided on the lower side of the suction plate; the convex ring is fitted with the circumferential edge of the transparent plate.

[0013] Furthermore, the diameter of the substrate is set to be larger than the diameter of the transparent plate.

[0014] Furthermore, a slot is provided on the contact surface between the limiting block and the substrate; the limiting block is configured to engage with the substrate.

[0015] The beneficial effects are: The present invention integrates basic adhesive fluidity testing, adhesive fluidity testing when dripping on different materials, establishing a relationship model test on the effect of temperature conditions on the fluidity of adhesive dripping on different materials, establishing a relationship model test on the fluidity of adhesive, dripping amount, and coverage during board bonding, establishing a relationship model test on the fluidity of adhesive, dripping amount, coverage, and bonded material during board bonding, and bonding strength testing, thereby enriching the test items of the testing device and improving the practicality of the testing device. In the basic fluidity test, the photoelectric sensor, telescopic plate and timer are used in conjunction to automatically time the adhesive outflow time, avoiding the problem of large differences in measurement time due to manual operation errors. At the same time, by keeping the receiving cup and adhesive warm, the adhesive viscosity error is reduced and the accuracy of multiple test results is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the adhesive fluidity testing device of the present invention; Figure 2 It is a cross-sectional view of the combination of the viscosity cup and the first fixing frame of the present invention; Figure 3 This is a schematic diagram of the combined three-dimensional structure of the test platform, drip test assembly and simulated bonding system of the present invention; Figure 4 for Figure 3 A magnified image of the area at center A; Figure 5 This is a diagram showing the bonding state of the substrate and the transparent plate of the present invention; Figure 6 for Figure 5 Magnified view of the area at B.

[0017] Parts names and serial numbers in the figure: 1-testing table, 1001-limiting block, 2-viscosity cup, 2001-liquid storage chamber, 2002-collecting tank, 3-first fixing frame, 3001-insulating chamber, 4-receiving cup, 4001-light-transmitting plate, 4002-connecting hole, 5-photoelectric sensor, 6-telescopic plate, 201-first slide rail, 202-first electric slider, 203-air heater, 204-first electric three-way valve, 205 -First air supply pipe, 206-Automatic dispensing valve, 20601-Top block, 207-Dripping tube, 208-Base plate, 209-Block, 301-Second slide rail, 302-Second electric slider, 303-Second fixed frame, 304-Drive member, 305-Suction plate, 30501-Suction hole, 30502-Convex ring, 306-Second electric-controlled three-way valve, 307-Connecting pipe, 308-Transparent plate, 309-Second air supply pipe. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1 Reference Figures 1-4 As shown, an adhesive fluidity testing device includes a test platform 1 and a viscosity cup 2; the viscosity cup 2 is placed on the test platform 1; a liquid storage cavity 2001 is provided in the viscosity cup 2; an outflow hole is opened on the lower side of the liquid storage cavity 2001; and a collection tank 2002 is provided on the upper side of the viscosity cup 2; It also includes a first drive assembly, a first fixed frame 3, a receiving cup 4, a photoelectric sensor 5, a telescopic plate 6 and an auxiliary insulation assembly; a first drive assembly is installed on the testing platform 1; the first drive assembly is connected to the first fixed frame 3; the first fixed frame 3 is driven up and down by the first drive assembly; a receiving cup 4 is inserted in the middle of the first fixed frame 3; the receiving cup 4 is located directly below the viscosity cup 2; a light-transmitting plate 4001 is provided on the left and right sides of the receiving cup 4; two left-right symmetrical photoelectric sensors 5 are fixed to the first fixed frame 3; the two photoelectric sensors 5 are respectively located on the left and right sides of the receiving cup 4; a telescopic plate 6 is fixed to the testing platform 1; the telescopic plate 6 consists of a fixed plate and a slide plate; the slide plate of the telescopic plate 6 is in contact with the lower side of the viscosity cup 2; a limit switch is provided in the fixed plate of the telescopic plate 6; a timer is provided on the testing platform 1, and the timer is electrically connected to the limit switch built into the telescopic plate 6; an auxiliary insulation assembly is installed on the testing platform 1; the adhesive in the receiving cup 4 is insulated by the auxiliary insulation assembly.

[0020] The first driving assembly includes a first slide rail 201 and a first electric slider 202; the first slide rail 201 is fixedly connected to the inspection table 1; the first electric slider 202 is slidably connected to the first slide rail 201; the first electric slider 202 is fixedly connected to the first fixed frame 3; the first fixed frame 3 is driven up and down by the first electric slider 202.

[0021] The auxiliary insulation component includes an air heater 203, a first electrically controlled three-way valve 204 and a first air pipe 205; an insulation chamber 3001 is provided in the first fixed frame 3, and the insulation chamber 3001 is annular in shape; an exhaust hole is provided on the rear side of the first fixed frame 3, and the exhaust hole is connected to the insulation chamber 3001; an air heater 203 is fixed to the lower side of the detection table 1; the air inlet of the air heater 203 is connected to an external air pump; the air outlet of the air heater 203 is connected to the first electrically controlled three-way valve 204; the first electrically controlled three-way valve 204 is connected to the first air pipe 205; the first air pipe 205 is connected to the insulation chamber 3001.

[0022] It also includes a drop test assembly; the drop test assembly includes an automatic dispensing valve 206, a dropper 207, a base plate 208 and a stopper 209; the automatic dispensing valve 206 is fixed to the lower side of the first fixing frame 3; the automatic dispensing valve 206 is connected to the external air pressure regulating device through a pipeline; the liquid inlet of the automatic dispensing valve 206 passes through the bottom of the first fixing frame 3; the liquid outlet of the automatic dispensing valve 206 is connected to the dropper 207; a connecting hole 4002 is opened at the bottom of the receiving cup 4; The bottom of the receiving cup 4 is connected to a stopper 209 through a spring; the shape of the stopper 209 is the same as the shape and diameter of the connecting hole 4002; two top blocks 20601 are provided on the upper side of the automatic dispensing valve 206; the top block 20601 passes through the connecting hole 4002, and the top block 20601 fits with the bottom of the stopper 209, and the receiving cup 4 is connected to the liquid inlet of the automatic dispensing valve 206; a substrate 208 is placed on the detection table 1; the center of the substrate 208 is aligned with the center of the dropper 207.

[0023] Furthermore, in order to avoid the manual alignment step and improve the alignment accuracy of the substrate 208 , a limit block 1001 is set in the middle of the detection platform 1 ; the limit block 1001 is U-shaped; the substrate 208 is located in the middle of the limit block 1001 .

[0024] Furthermore, in order to reduce the loss of heat conduction and improve the heat preservation effect of the receiving cup 4 on the adhesive, the receiving cup 4 is made of a copper alloy material with good thermal conductivity and corrosion resistance.

[0025] To address the problem in the prior art of large measurement time errors due to operational errors when manually measuring the flow time of adhesives using a stopwatch, and to address the problem of different viscosity measurements due to different adhesive temperatures each time, which affects the viscosity accuracy, the following describes the adhesive flowability test process in detail: The staff pours the adhesive to be tested into the liquid storage chamber 2001, and then manually uses a scraper to scrape it along the upper edge of the viscosity cup 2, and scrapes the adhesive that is higher than the upper edge of the viscosity cup 2 into the collection tank 2002, so as to ensure that the amount of adhesive tested is consistent. Then the staff pushes the slide on the telescopic plate 6 to move backward, so that the slide is separated from the bottom of the viscosity cup 2, and the adhesive in the liquid storage chamber 2001 flows downward into the receiving cup 4. The adhesive forms a continuous liquid column during the flow process, and the liquid column is located between the two photoelectric sensors 5. When the slide is manually pressed, the slide retracts into the fixed plate and squeezes the fixed plate. The limit switch inside transmits a signal to the timer through the limit switch, so that the timer starts timing. At the same time, the photoelectric sensor 5 starts working, and the photoelectric sensor 5 on the right continues to send a light signal. The light signal passes through the right light-transmitting plate 4001, the liquid column, and the left light-transmitting plate 4001 in turn, and is finally received by the left photoelectric sensor 5. In this way, the flow of the adhesive can be continuously monitored by the photoelectric sensor 5. When the adhesive in the liquid storage chamber 2001 has flowed out, the liquid column disappears. At this time, the photoelectric sensor 5 sends a signal to the timer to start and stop timing, and records the time of the timer. Then, the viscosity value of the adhesive is calculated by the conversion formula.

[0026] Considering that the same batch of adhesives usually needs to be tested multiple times, after the first test, the receiving cup 4 needs to be removed from the first fixing frame 3, and the adhesive in the receiving cup 4 needs to be poured back into the liquid storage chamber 2001. Considering that there is adhesive remaining in the receiving cup 4, a small amount of adhesive needs to be added to the liquid storage chamber 2001. Subsequently, multiple tests are performed in the same manner as the first test, and the data of the timer is recorded in sequence. The data measured multiple times are summarized and the average is calculated, so that the viscosity data of the adhesive can be obtained. In this process, considering that the adhesive exchanges heat with the outside air during the process of flowing out of the viscosity cup 2, causing its own temperature to change, and the viscosity of the adhesive is affected by its own temperature, resulting in a deviation between the viscosity of the adhesive detected and the actual viscosity, reducing the accuracy of the test results. For this reason, during the flow of the adhesive, the first electrically controlled three-way valve 204 is controlled to connect the first air pipe 205 to the air adding The air is then fed into the air heater 203 through an external air pump, and the air temperature is adjusted by the air heater 203 so that the air temperature is consistent with the test temperature of the adhesive. The air is then passed through the first electrically controlled three-way valve 204 and the first air pipe 205 into the insulation chamber 3001, and then discharged from the exhaust hole on the rear side of the first fixed frame 3. In this way, the air after the temperature is adjusted by the air heater 203 is used to insulate the insulation chamber 3001 and the receiving cup 4, so that when multiple tests are performed, the temperature error of the adhesive is reduced, thereby reducing the viscosity error of the adhesive and improving the accuracy of the test results of multiple times. It is explained here that the receiving cup 4 is made of a copper alloy material with good thermal conductivity and corrosion resistance, which can reduce the loss of heat conduction and improve the insulation effect of the receiving cup 4 on the adhesive. At the same time, it is ensured that the receiving cup 4 will not rust after the adhesive has been in contact with the receiving cup 4 for a long time.

[0027] Compared with existing adhesive fluidity testing devices, the photoelectric sensor 5, the telescopic plate 6, and the timer cooperate to automatically measure the adhesive outflow time, thereby avoiding the problem of large differences in measurement time due to manual operation errors. At the same time, by keeping the receiving cup 4 and the adhesive warm, the viscosity error of the adhesive is reduced, and the accuracy of multiple test results is improved. In addition, the viscosity cup 2 is a standard component in the prior art, with a simple structure and low price. Compared with the prior art structure in which the photoelectric sensor 5 and the viscosity cup 2 are integrated, by separating the photoelectric sensor 5 and the telescopic plate 6 from the viscosity cup 2, if the viscosity cup 2 is damaged, it can be replaced with a new standard component at will, reducing the cost of replacing the viscosity cup 2.

[0028] It is also considered that adhesives are often used in the field of decorative product production. For example, adhesives are used to bond a substrate 208 used as a decorative display to an acrylic plate or glass plate to form a decorative craft. When producing such decorative crafts, it is usually necessary to use a dispensing device to drop the adhesive on the substrate 208, allowing the adhesive to spread on the substrate 208, and then affix the acrylic plate or glass plate to the substrate 208. During this process, since the substrate 208 in the decorative product is made of different materials and has different surface roughness, the fluidity of the adhesive will be affected by the surface roughness of the substrate 208. The viscosity cup 2 can only test the viscosity of the adhesive itself, but cannot test the fluidity of the adhesive on different substrates 208. Therefore, the viscosity cup 2 alone has a relatively limited range of testing the fluidity performance of the adhesive.

[0029] Here, in the initial state, when the receiving cup 4 is fitted with the bottom of the first fixing frame 3, the stopper 209 is separated from the connecting hole 4002 due to the squeezing of the top block 20601, and the spring between the stopper 209 and the receiving cup 4 is compressed. The adhesive in the receiving cup 4 enters the automatic dispensing valve 206 through the connecting hole 4002, and the pressure in the automatic dispensing valve 206 is adjusted by the external air pressure regulating device, so that the dropper 207 is in a negative pressure state to prevent the adhesive from dripping. In addition, the adhesive in the receiving cup 4 is reduced. Therefore, when the adhesive in the receiving cup 4 is poured back into the liquid storage chamber 2001, a small amount of adhesive needs to be added to the liquid storage chamber 2001. After completing the viscosity test of the adhesive, the substrate 208 is manually inserted into the middle of the limit block 1001, and the position of the substrate 208 is assisted by the limit block 1001 so that the center of the substrate 208 is facing the center of the dropper 207. The manual alignment step is eliminated, improving the alignment accuracy of the substrate 208. The first electric slider 202 is then controlled to drive the first fixing frame 3 and its connecting parts to move downward on the first slide rail 201, so that the dropper 207 approaches the substrate 208. At this time, the adhesive is delivered to the substrate 208 through the automatic dispensing valve 206 at a set pressure and time. It is explained here that the adhesive output can be precisely controlled by setting the parameters of the glue supply pressure and glue supply time of the automatic dispensing valve 206. The adhesive then drips from the dropper 207 onto the center of the substrate 208, and the diffusion diameter of the adhesive on the substrate 208 is manually observed and recorded. Subsequently, by replacing the substrate 208 with a different material and comparing the diffusion diameter of the adhesive on the substrates 208 of different materials, the fluidity of the adhesive on the substrates 208 of different materials is tested, thereby compensating for the disadvantage that the viscosity cup 2 has a relatively limited test range for the fluidity performance of the adhesive.

[0030] In the process of testing the diffusion range of the adhesive, air is blown into the insulation chamber 3001 through the air heater 203, and the air heater 203 is controlled to adjust the temperature of the air to adjust the temperature of the adhesive in the receiving cup 4 (the adjusted temperature at this time is based on the initial temperature of the adhesive, even if the temperature of the adhesive rises). The viscosity of the adhesive is affected by temperature. In this way, the flow of the adhesive at different temperatures and dripping on the substrate 208 can be simulated, and the flow of the adhesive at different temperatures for the substrate 208 of the same material can be determined to further enrich the needs of the adhesive for fluidity testing in actual scenarios.

[0031] Example 2 Based on Example 1, Figure 1 、 Figure 3 、 Figure 5 and Figure 6 As shown, it also includes a simulated bonding system; the simulated bonding system includes a second drive assembly, a suction plate 305, a second electrically controlled three-way valve 306, a connecting pipe 307 and a transparent plate 308; a second drive assembly is installed on the detection table 1; the second drive assembly is connected to the suction plate 305; the suction plate 305 is driven to move back and forth and up and down by the second drive assembly; a cavity is provided in the suction plate 305; a plurality of suction holes 30501 are opened at the bottom of the suction plate 305, and all the suction holes 30501 are connected to the cavity; the cavity of the suction plate 305 is connected to the connecting pipe 307; the connecting pipe 307 is connected to the second electrically controlled three-way valve 306; the second electrically controlled three-way valve 306 is fixed on the second drive assembly; one end of the second electrically controlled three-way valve 306 is connected to an external air pump; and a transparent plate 308 is adsorbed on the lower side of the suction plate 305.

[0032] The second driving assembly includes a second slide rail 301, a second electric slider 302, a second fixed frame 303 and a driving member 304; the second slide rail 301 is fixedly connected to the detection table 1; the second electric slider 302 is slidably connected to the second slide rail 301; the second fixed frame 303 is fixedly connected to the second electric slider 302; the second electrically controlled three-way valve 306 is fixed to the second fixed frame 303; the driving member 304 is fixedly connected to the second fixed frame 303, and the driving member 304 is an electric push rod; the telescopic end of the driving member 304 is fixedly connected to the suction plate 305.

[0033] A second gas pipeline 309 is also included; the second gas pipeline 309 is connected between the first electrically controlled three-way valve 204 and the second electrically controlled three-way valve 306 .

[0034] Furthermore, in order to assist manual alignment of the transparent plate 308 , a convex ring 30502 is provided on the lower side of the suction plate 305 ; the convex ring 30502 is in contact with the circumferential edge of the transparent plate 308 .

[0035] Furthermore, in order to prevent the overflowed adhesive from flowing onto the inspection platform 1 and increasing the workload of cleaning the adhesive, the diameter of the substrate 208 is set to be larger than the diameter of the transparent plate 308 .

[0036] Furthermore, in order to implement the bonding strength test and the shear strength test of the adhesive, a card slot is provided on the contact surface between the limit block 1001 and the substrate 208 ; the limit block 1001 is provided to be engaged with the substrate 208 .

[0037] It is also considered that when the transparent plate 308 (acrylic plate or glass plate) is bonded to the substrate 208, the adhesive will further spread to the surroundings under the pressure of the transparent plate 308. Therefore, the fluidity of the adhesive in actual use is also affected by the bonding action of the substrate 208 and the transparent plate 308. At the same time, when the transparent plate 308 is bonded to the substrate 208, the flow and diffusion of the adhesive on the substrate 208 is also related to the amount of adhesive dripping. That is, when the amount of adhesive dripping is small, the adhesive cannot fill the substrate. The contact surface of substrate 208 and transparent plate 308 reduces the bonding strength. If the amount of adhesive dripping is large, the adhesive will overflow from the edge of the contact surface of substrate 208 and transparent plate 308, which will cause waste of adhesive and increase production costs. Therefore, when the adhesive is put into actual use, it is necessary to detect the relationship between the flow and diffusion of the adhesive and the amount of dripping, and the bonding action of substrate 208 and transparent plate 308, so as to evaluate the appropriate amount of adhesive in actual use, so as to ensure the bonding quality while reducing production costs.

[0038] In order to solve the above problem, in the process of testing the diffusion range of the adhesive, after the adhesive drips onto the substrate 208, the dripping amount of the adhesive is recorded by the scale mark on the dropper 207, and the second electrically controlled three-way valve 306 is controlled to connect the external air pump with the connecting pipe 307, and then the external air pump is controlled to start pumping air, so that the outside air passes through the suction hole 30501, the cavity in the suction plate 305, the connecting pipe 307 and the second electrically controlled three-way valve 306 in sequence, and is finally discharged to the external air pump, so that suction is generated at the suction hole 30501, and then the worker The operator places the transparent plate 308 on the lower side of the suction hole 30501, and the transparent plate 308 is sucked by the suction force generated at the suction hole 30501. In addition, the edge of the transparent plate 308 is limited by the convex ring 30502, thereby assisting manual alignment of the transparent plate 308, so that the center of the transparent plate 308 is aligned with the center of the suction plate 305, and then the second electric slider 302 is controlled to drive the second fixing frame 303 and its connecting parts to move backward on the second slide rail 301, so that the center of the transparent plate 308 is aligned with the center of the substrate 208, and then the driving The component 304 drives the suction plate 305 and the transparent plate 308 to move downward, so that the lower surface of the transparent plate 308 is in contact with the upper surface of the substrate 208, thereby squeezing the adhesive on the substrate 208 downward through the transparent plate 308, causing the adhesive to diffuse and flow around, thereby simulating the bonding process in the actual production process. Then, the above operation is repeated, and multiple groups of substrates 208 and transparent plates 308 are used for testing. The variable of each group is the amount of adhesive dripping. Then, the optimal amount of adhesive dripping is determined by manually observing the diffusion of the adhesive after being pressed, and a basic During the bonding operation of the substrate 208 and the transparent plate 308, a relationship model among the fluidity, dripping amount and coverage of the adhesive is developed to reduce the amount of adhesive overflow during actual use and reduce production costs. It is explained here that when the adhesive overflows from the edge of the contact surface between the substrate 208 and the transparent plate 308, the diameter of the substrate 208 is set to be larger than the diameter of the transparent plate 308, so that the overflowed adhesive flows to the upper surface of the substrate 208, thereby preventing the adhesive from flowing to the circumferential edge of the substrate 208 and then flowing onto the inspection table 1, thereby increasing the workload of cleaning the adhesive.

[0039] Furthermore, in the process of testing the relationship model among adhesive fluidity, dripping amount and coverage range, the combination of substrate 208 and transparent plate 308 made of different materials can be replaced as a control group, and a relationship model among adhesive fluidity, dripping amount, coverage range and bonded material can be established to determine the optimal dripping amount of adhesive under the combination of substrate 208 and transparent plate 308 made of different materials, and use this as the basis for the adhesive usage in the actual production process to reduce production costs.

[0040] On this basis, after the transparent plate 308 and the substrate 208 are bonded into a whole, the adhesive is taken to fully fill the control group between the transparent plate 308 and the substrate 208, and the substrate 208 of the control group is clamped in the limit block 1001. The limit block 1001 limits the displacement of the substrate 208 in the up and down and front and back directions, and then the transparent plate 308 is sucked by the suction plate 305. At this time, the driving member 304 is controlled to drive the suction plate 305 and the transparent plate 308 to move upward, and the substrate 208 is clamped in the limit block 1001. In this way, without using an additional testing device, the bonding strength of the adhesive is tested by stretching the transparent plate 308 and the substrate 208, and the shear strength of the adhesive is tested by controlling the second electric slider 302 to drive the transparent plate 308 to move back and forth, thereby enriching the test items of the testing device and improving the practicality of the testing device.

[0041] Furthermore, after the adhesive strength and shear strength tests are completed, if the transparent plate 308 is still bonded to the substrate 208, the external air pump is controlled to stop pumping air, and the driving member 304 is controlled to move upward to separate the suction plate 305 from the transparent plate 308. At this time, the first electrically controlled three-way valve 204 is controlled to connect the air heater 203 with the second air supply pipe 309, and the second electrically controlled three-way valve 306 is controlled to connect the connecting pipe 307 with the second air supply pipe 309. Then, the external air pump is controlled to blow air into the air heater 203, and the high-temperature air heated by the air heater 203 is blown toward the surface of the transparent plate 308 through the suction hole 30501, thereby raising the temperature of the transparent plate 308 until the adhesive between the transparent plate 308 and the substrate 208 softens. This makes it easy for the staff to separate the transparent plate 308 and the substrate 208 easily and transfer them to the cleaning pool for cleaning and reuse.

[0042] The above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An adhesive fluidity testing device, comprising a testing platform (1) and a viscosity cup (2); the viscosity cup (2) is placed on the testing platform (1); and is characterized in that: The apparatus further comprises a first drive assembly, a first fixing frame (3), a receiving cup (4), a photoelectric sensor (5), a telescopic plate (6) and an auxiliary heat-insulating assembly; the first drive assembly is mounted on the detection table (1); the first fixing frame (3) is connected to the first drive assembly; the first fixing frame (3) is driven to move up and down by the first drive assembly; the receiving cup (4) is plugged into the first fixing frame (3); the receiving cup (4) is located directly below the viscosity cup (2); a light-transmitting plate (4001) is provided on the left and right sides of the receiving cup (4); the first drive assembly is connected to the first fixing frame (3); the first drive assembly is connected to the first fixing frame (3); the receiving cup (4) is located directly below the viscosity cup (2); a light-transmitting plate (4001) is provided on the left and right sides of the receiving cup (4); Two left-right symmetrical photoelectric sensors (5) for improving measurement accuracy are fixedly connected to a fixed frame (3); the two photoelectric sensors (5) are respectively located on the left and right sides of the receiving cup (4); a telescopic plate (6) is fixedly connected to the detection platform (1); the telescopic plate (6) is attached to the lower side of the viscosity cup (2); a limit switch is provided in the telescopic plate (6); a timer is provided on the detection platform (1), and the timer is electrically connected to the limit switch built into the telescopic plate (6); and an auxiliary heat preservation component for maintaining a constant temperature of the adhesive is installed on the detection platform (1).

2. The adhesive fluidity testing device according to claim 1, characterized in that: The auxiliary heat preservation component comprises an air heater (203), a first electrically controlled three-way valve (204) and a first air supply pipe (205); a heat preservation chamber (3001) is provided in the first fixing frame (3), and the heat preservation chamber (3001) is annular in shape; an exhaust hole is provided on the first fixing frame (3), and the exhaust hole is communicated with the heat preservation chamber (3001); an air heater (203) is fixedly connected to the test table (1); an air inlet of the air heater (203) is communicated with an external air pump; an air outlet of the air heater (203) is communicated with the first electrically controlled three-way valve (204); the first electrically controlled three-way valve (204) is communicated with the first air supply pipe (205); and the first air supply pipe (205) is communicated with the heat preservation chamber (3001).

3. The adhesive fluidity testing device according to claim 2, characterized in that: The invention also includes a drop test assembly for testing the fluidity of adhesive on different objects; the drop test assembly includes an automatic dispensing valve (206), a dropper (207), a base plate (208) and a stopper (209); the lower side of the first fixed frame (3) is fixed with an automatic dispensing valve (206) for controlling the outflow of the adhesive; the liquid inlet of the automatic dispensing valve (206) passes through the bottom of the first fixed frame (3); the liquid outlet of the automatic dispensing valve (206) is connected to the dropper (207); a connecting hole (4002) is opened at the bottom of the receiving cup (4); the bottom of the receiving cup (4) is connected to the receiving cup (4) by a spring The spring is connected to a stopper (209); the shape of the stopper (209) is the same as the shape and diameter of the connecting hole (4002); a plurality of top blocks (20601) are provided on the upper side of the automatic dispensing valve (206); the top block (20601) passes through the connecting hole (4002), and the top block (20601) fits with the bottom of the stopper (209), and the receiving cup (4) is connected to the liquid inlet of the automatic dispensing valve (206); a substrate (208) for detecting the fluidity of the adhesive on the object is placed on the detection table (1); the center of the substrate (208) is aligned with the center of the dropper (207).

4. The adhesive fluidity testing device according to claim 3, characterized in that: A limiting block (1001) for positioning the substrate (208) is provided in the middle of the detection platform (1); the limiting block (1001) is U-shaped; and the substrate (208) is located in the middle of the limiting block (1001).

5. The adhesive fluidity testing device according to claim 3, characterized in that: The receiving cup (4) is made of a copper alloy material having good thermal conductivity and corrosion resistance.

6. The adhesive fluidity testing device according to claim 4, characterized in that: The invention also includes a simulated bonding system; the simulated bonding system includes a second drive assembly, a suction plate (305), a second electrically controlled three-way valve (306), a connecting pipe (307) and a transparent plate (308); the second drive assembly is installed on the test table (1); the second drive assembly is connected to the suction plate (305); the suction plate (305) is driven by the second drive assembly to move forward and backward and up and down; a cavity is provided in the suction plate (305); a plurality of suction holes (30501) are opened at the bottom of the suction plate (305), and all the suction holes (30501) are connected to the cavity; the cavity of the suction plate (305) is connected to the connecting pipe (307); the connecting pipe (307) is connected to the second electrically controlled three-way valve (306); the second electrically controlled three-way valve (306) is fixed on the second drive assembly; one end of the second electrically controlled three-way valve (306) is connected to an external air pump; and a transparent plate (308) for simulating the bonding process in the actual production process is adsorbed on the lower side of the suction plate (305).

7. The adhesive fluidity testing device according to claim 6, characterized in that: It also includes a second gas pipe (309); a second gas pipe (309) for heating the transparent plate (308) is connected between the first electrically controlled three-way valve (204) and the second electrically controlled three-way valve (306).

8. The adhesive fluidity testing device according to claim 6, characterized in that: A convex ring (30502) is provided on the lower side of the suction plate (305); the convex ring (30502) is fitted with the circumferential edge of the transparent plate (308).

9. The adhesive fluidity testing device according to claim 8, characterized in that: The diameter of the substrate (208) is set to be larger than the diameter of the transparent plate (308).

10. The adhesive fluidity testing device according to claim 9, characterized in that: The contact surface between the limiting block (1001) and the base plate (208) is provided with a card slot; the limiting block (1001) is provided to be engaged with the base plate (208).

Images