Ceramic sucker manufacturing method and adsorption experiment device thereof

Abstract

The invention discloses a ceramic suction cup manufacturing method and an adsorption experiment device thereof, porous ceramic powder is loaded into a special paper box for preliminary blank pressing forming, then a blank body is more compact and uniform through a high-pressure isostatic pressing process, and the formed blank body is subjected to high-temperature sintering treatment to be completely cured, so that the ceramic suction cup is obtained. After firing is completed, carefully checking whether defects such as cracks exist or not, then precisely grinding the ceramic suction cup by using a diamond grinding wheel with a water cooling function to ensure that the thickness and the flatness meet the requirements, and meanwhile, machining a matched aluminum base by using a high-precision CNC machine tool to ensure that the aluminum base is perfectly matched with the ceramic suction cup; during assembly, special glue is selected for bonding the two parts, particularly, the thickness of a glue layer is controlled to avoid blocking a microporous structure of the sucker, and finally, after the glue is completely cured, a strict adsorption performance test is carried out on a finished product to ensure that the vacuum adsorption capacity and durability of the finished product reach the use standard.

Description

Technical Field

[0001] The present invention relates to the field of adsorption force experiments of ceramic suction cups, and particularly relates to a manufacturing method of a ceramic suction cup and its adsorption experiment device. Background Art

[0002] The adsorption experiment device of a ceramic suction cup is a special equipment for testing and evaluating the adsorption performance of a ceramic suction cup. By simulating the actual application scenario, it measures key parameters such as the adsorption force, stability, and durability of the ceramic suction cup under different conditions.

[0003] With the continuous expansion of the application scenarios of ceramic suction cups, the accurate testing of their adsorption performance has become crucial. Traditional manual testing methods have problems such as low accuracy and poor repeatability. Therefore, a special experimental device is needed to standardize the testing of the adsorption performance of ceramic suction cups to ensure the accuracy of experimental data. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies in the above technologies and propose a manufacturing method of a ceramic suction cup and its adsorption experiment device, aiming to solve the above technical problems.

[0005] The present invention provides a manufacturing method of a ceramic suction cup, including the following steps: S1. Material selection: Select porous ceramic powder for paper box pressing. S2. Isostatic pressing: Perform isostatic pressing on the blank after pressing. S3. Sintering: Sinter the porous ceramic blank after isostatic pressing. S4. Process inspection: After the porous ceramic blank is fired and taken out of the furnace, inspect it to observe whether there are cracking phenomena and perform performance testing on it. S5. Ceramic processing: Use a large water mill to grind the thickness of the porous ceramic suction cup. S6. Base processing: Perform CNC processing on the aluminum plate to make it fit the polished porous ceramic suction cup. S7. Assembly and bonding: Bond the porous ceramic suction cup and the aluminum base with glue, and prevent the glue from blocking the micropores on the ceramic suction cup. S8. Testing: When the glue is completely dry, test the ceramic suction cup.

[0006] Preferably, the porous ceramic powder includes pore-forming agent powder, porous precursor powder, hollow sphere ceramic powder, and biological template powder. The main powder particle size of the ceramic powder is 10 - 20um, the gap pore size after its accumulation is 30um, 25 - 35um pore-forming agent is added for sintering, and the proportion of the pore-forming agent is 30 - 50%.

[0007] Preferably, isostatic pressing includes cold isostatic pressing and wet bag isostatic pressing, and the pressure of isostatic pressing is 50 - 300 Mpa.

[0008] Preferably, the paper box includes kraft paper, corrugated paper, filter paper and special paper. The thickness of the kraft paper is 0.3 - 0.5 mm, and the thickness of the corrugated paper is 1 - 2 mm.

[0009] Preferably, in the large water grinding process, the water flow rate is 5 - 10 L / min, the pressure is 0.1 - 0.5 Mpa, and step - type grinding is adopted. Among them, rough grinding: 80 - 120 mesh, fine grinding: 400 - 3000 mesh, and the grinding tool uses a diamond grinding wheel.

[0010] Preferably, when processing the aluminum base by CNC, its flatness is controlled within ±0.01 mm, and the hole position accuracy is controlled within ±0.02 mm.

[0011] Preferably, the glue includes epoxy resin, silicone rubber, ceramic glue, polyurethane glue, cyanoacrylate, phenolic resin or modified acrylate, and the thickness of the glue layer is 0.1 - 0.3 mm.

[0012] Preferably, it includes an experimental frame body and a copper foil for adsorption experiments, and further includes: A driving mechanism, which is arranged on the experimental frame body. A clamping component is connected to the driving end of the driving mechanism. The clamping component clamps the porous ceramic suction cup, and the driving mechanism drives the clamping component to move vertically upward along the horizontal plane; A vacuum control component, which is arranged on the experimental frame body. An air pipe is connected to the vacuum control component. One end of the air pipe is connected to the porous ceramic suction cup. The vacuum control component is used to provide suction to the porous ceramic plate to conduct the adsorption experiment on the copper foil.

[0013] Preferably, the driving mechanism includes a motor. The motor is fixedly installed on the experimental frame body. A sprocket is fixedly installed on the output shaft of the motor. Two threaded rods are rotatably installed on the experimental frame body. One ends of the two threaded rods are both fixedly installed with sprockets. The sprockets are connected by a chain drive. A moving plate is threadedly connected to the two threaded rods. Two fixed seats are slidably installed on the moving plate. A screw rod is threadedly connected through the two fixed seats. Clamping arms are fixedly installed on the two fixed seats. Grooves are formed on the clamping arms. Fixed handles are fixedly installed at both ends of the porous ceramic plate. The grooves are adapted to the fixed handles.

[0014] Preferably, the vacuum control component includes a vacuum converter. An air pipe is connected to the vacuum converter. The length of the air pipe is greater than the lifting distance of the porous ceramic plate.

[0015] Compared with the prior art, it has the following beneficial effects: The present invention provides a method for manufacturing a ceramic suction cup and its adsorption experiment device. The through channels formed by the pores of the porous ceramic plate manufactured by the above manufacturing method can reduce fluid resistance, avoid local eddy currents, reduce pumping energy consumption compared to smaller pore diameters, and the pore diameters are not easily completely blocked by common particles, reducing the cleaning frequency of the porous ceramic plate. In addition, the above experiment device drives the clamping assembly to drive the porous ceramic plate to rise and fall through the driving mechanism, avoiding errors caused by manual testing, improving the accuracy of the experiment, saving manpower and improving efficiency, and ensuring more accurate experimental data. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only the preferred embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 Schematic diagram of a method for manufacturing a ceramic suction cup and its adsorption experiment device of the present invention; Figure 2 Schematic diagram of the connection relationship between the moving plate and the ceramic plate of a method for manufacturing a ceramic suction cup and its adsorption experiment device of the present invention.

[0018] In the figure, 1, experimental frame body; 2, air pipe; 3, motor; 4, sprocket; 5, threaded rod; 6, chain; 7, moving plate; 8, fixed seat; 9, screw; 10, clamping arm; 11, groove; 12, fixed handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to more easily understand the structure of the present invention and the functional features and advantages that can be achieved, the following will describe the preferred embodiments of the present invention in detail in conjunction with the drawings: Embodiment 1: As Figures 1 to 2 shown, the present invention provides a method for manufacturing a ceramic suction cup and its adsorption experiment device, including the following steps: S1. Material selection: Select porous ceramic powder for paper box pressing. S2. Isostatic pressing: Perform isostatic pressing on the blank after pressing. S3. Sintering: Sinter the porous ceramic blank after isostatic pressing. S4. Process inspection: After the porous ceramic blank is fired and taken out of the furnace, inspect it to observe whether there are cracks and perform performance testing on it. S5. Ceramic processing: Use a large water mill to grind the thickness of the porous ceramic suction cup. S6. Base Processing: CNC process the aluminum plate to make it fit the polished porous ceramic suction cup. S7. Assembly and Adhesion: Use glue to bond the porous ceramic suction cup to the aluminum base, and prevent the glue from blocking the micropores on the ceramic suction cup. S8. Testing: After the glue is completely dry, test the ceramic suction cup.

[0020] During use, press the porous ceramic powder into shape, make the embryo denser and more uniform through high-pressure isostatic pressing, then put it into a high-temperature furnace for sintering and shaping. After sintering, check for cracks or defects. Use a grinding machine with water cooling to trim the surface of the suction cup to the required thickness. Use a precision CNC machine tool to process a matching aluminum base, and then firmly bond the ceramic suction cup and the aluminum base with glue. The glue should not block the tiny air holes on the suction cup. After the glue is completely dry, conduct a comprehensive test on the finished suction cup to ensure that its adsorption performance meets the standards.

[0021] Example 2: As Figures 1 to 2 shown, combining the technical solution of Example 1, in this technical solution, the porous ceramic powder includes pore-forming agent powder, porous precursor powder, hollow sphere ceramic powder, and biological template powder. The main particle size of the ceramic powder is 10 - 20um, and the pore size of the gaps after its accumulation is 30um. Add a pore-forming agent of 25 - 35um for sintering, and the proportion of the pore-forming agent is 30 - 50%. Use ceramic powder with a size of 10 - 20 microns as the main material, and then add a pore-forming agent of 25 - 35 microns, with the dosage controlled between 30% - 50%. In this way, the pore-forming agent will burn off during the sintering process, leaving voids to form uniform small holes of about 30 microns. In addition to the pore-forming agent, special materials such as porous precursor powder, hollow ceramic spheres, and biological template powder are also added, which can help form a more ideal pore structure. After mixing these powders evenly, through pressing and high-temperature sintering, a porous ceramic with precisely controlled pore size can be made.

[0022] Furthermore, isostatic pressing includes cold isostatic pressing and wet bag isostatic pressing, and the pressure of isostatic pressing is 50 - 300 Mpa. Put the pressed ceramic embryo into a special isostatic pressing equipment and apply a strong pressure of 50 to 300 MPa. The ceramic powder will be pressed tightly, and the force is uniform in all directions, without the problem of uneven force in the ordinary pressing method. The density of the ceramic embryo after isostatic pressing treatment is higher and the structure is more uniform, so it is not easy to deform and crack during the subsequent high-temperature sintering. Finally, the ceramic suction cup made has better strength and longer service life.

[0023] Furthermore, the paper box includes kraft paper, corrugated paper, filter paper and special paper. The thickness of the kraft paper is 0.3 - 0.5 mm, and the corrugated paper is 1 - 2 mm. Controlling the thickness of the kraft paper between 0.3 and 0.5 mm and the corrugated paper between 1 and 2 mm can withstand the high pressure of the subsequent isostatic pressing and can be completely burned out during high-temperature sintering without leaving impurities. The kraft paper has high strength and is suitable for small parts, the corrugated paper has good buffering performance and is suitable for large parts, the filter paper is suitable for high-purity products, and the special paper is used in special occasions.

[0024] Furthermore, in the large water grinding process, the water flow rate is 5 - 10 L / min, the pressure is 0.1 - 0.5 Mpa, and stepped grinding is adopted. Among them, rough grinding: 80 - 120 mesh, fine grinding: 400 - 3000 mesh, and diamond grinding wheels are used as grinding tools. Controlling the water flow rate at 5 to 10 liters per minute and the pressure between 0.1 and 0.5 Mpa can effectively cool down the temperature without damaging the ceramic. The grinding is divided into two steps. First, use a coarse grinding wheel (80 - 120 mesh) to quickly trim the shape, and then use a fine grinding wheel (400 - 3000 mesh) for fine polishing. During the whole grinding process, the water flow is always flushing, which can not only cool down the temperature to prevent the ceramic from cracking but also wash away the ground powder to ensure that the grinding surface is clean and flat.

[0025] Furthermore, when machining the aluminum base by CNC, its flatness is controlled within ±0.01 mm, and the hole position accuracy is controlled within ±0.02 mm. The high-precision requirements are to ensure that the base and the ceramic suction cup can fit tightly together without affecting the adsorption effect of the suction cup due to a little unevenness.

[0026] Furthermore, the glue includes epoxy resin, silicone rubber, ceramic glue, polyurethane glue, cyanoacrylate, phenolic resin or modified acrylate, and the thickness of the glue layer is 0.1 - 0.3 mm. According to different usage environments and requirements, different types of glue such as epoxy resin, silicone rubber, special ceramic glue, polyurethane glue, quick-drying glue (cyanoacrylate), phenolic resin or modified acrylate can be selected. The thickness of the glue layer is maintained between 0.1 and 0.3 mm to avoid the glue layer being too thin to adhere firmly and too thick to block the micropores on the suction cup and affect the adsorption effect. When applying the glue, the glue should evenly cover the bonding surface without seeping into the pores of the suction cup. Epoxy resin has high strength, silicone rubber is heat-resistant, and quick-drying glue is easy to operate. Selecting the right glue and controlling the thickness of the glue layer can ensure that the ceramic suction cup and the aluminum base are firmly adhered without affecting the usage effect.

[0027] Furthermore, it includes an experimental frame 1 and a copper foil used for adsorption experiments, and also includes: A driving mechanism, which is arranged on the experimental frame 1. A clamping component is connected to the driving end of the driving mechanism, and the clamping component is used to clamp the porous ceramic suction cup. The driving mechanism drives the clamping component to move vertically upward along the horizontal plane; The vacuum control component is arranged on the experimental frame 1, and is connected with an air pipe 2, one end of which is connected to the porous ceramic suction cup. The vacuum control component is used to provide suction to the porous ceramic plate to carry out the adsorption experiment of the copper foil.

[0028] During the test, first put the copper foil on the table, use the clamping assembly to firmly fix the ceramic suction cup, then the driving mechanism will move the porous ceramic suction cup vertically upward, start the vacuum control system, it provides stable suction to the suction cup through the air pipe 2, so that the suction cup can absorb the copper foil and hold it, when the porous ceramic suction cup is lifted up by the motor 3, if the adsorption force is strong enough, the copper foil will be firmly sucked and rise with it, if the adsorption force is not enough, the copper foil will fall off, by observing whether the copper foil can be sucked and how much pulling force it can withstand, the adsorption performance of the ceramic suction cup can be accurately measured.

[0029] Furthermore, the driving mechanism includes a motor 3, which is fixedly mounted on the experimental frame 1, and a sprocket 4 is fixedly mounted on the output shaft of the motor 3. Two threaded rods 5 are rotatably mounted on the experimental frame 1, and a sprocket 4 is fixedly mounted on one end of the two threaded rods 5. The sprockets 4 are connected by a chain 6 for transmission. A movable plate 7 is threadedly connected to the two threaded rods 5, and two fixed seats 8 are slidably mounted on the movable plate 7. A screw 9 is threadedly connected between the two fixed seats 8, and clamping arms 10 are fixedly mounted on the two fixed seats 8. A groove 11 is opened on the clamping arm 10, and fixed handles 12 are fixedly mounted on both ends of the porous ceramic plate, and the grooves 11 are adapted to the fixed handles 12. Click to drive the threaded rod 5 to rotate, and the rotation of the threaded rod 5 drives the movable plate 7 to move along the length direction of the threaded rod 5. Two adjustable fixed seats 8 are installed on the movable plate 7. The distance between the two fixed seats 8 can be adjusted by rotating the middle screw 9. The fixed seat 8 is equipped with a clamping arm 10 with a groove 11, which can just clamp the fixed handles 12 at both ends of the ceramic suction cup to fix the suction cup firmly. During the test, when the motor 3 rotates, the chain 6 drives the threaded rod 5 to rotate, so that the entire movable plate 7 rises steadily and moves vertically with the suction cup, ensuring that the porous ceramic suction cup rises and falls steadily while the fixed seat 8 can be adjusted to adapt to suction cups of different sizes. The clamping is very firm and will not loosen during the test, ensuring that the test data is accurate and reliable.

[0030] Furthermore, the vacuum control assembly includes a vacuum converter, and an air pipe 2 is connected to the vacuum converter. The length of the air pipe 2 is greater than the lifting distance of the porous ceramic plate. The length of the air pipe 2 is longer than the maximum distance that the suction cup rises during the test. In this way, the air pipe 2 will not be tightened or pulled when the suction cup moves up and down, and it always remains unobstructed. The vacuum converter is responsible for generating and regulating the vacuum degree required by the suction cup. When the test starts, it can stably provide suction force to let the suction cup hold the copper foil. Moreover, during the process of the suction cup being lifted, the vacuum degree remains unchanged all the time. Such a design ensures that during the whole test process, the suction cup can obtain continuous and stable adsorption force and will not affect the test results due to movement, making the measurement data more accurate and reliable.

[0031] The working principle of a manufacturing method of a ceramic suction cup and its adsorption experiment device in this application: During use, ceramic powder with a size of 10 - 20 microns is mixed with a pore-forming agent of 25 - 35 microns. Only in this way can the suction cup fired have uniform small holes of about 30 microns. The mixed powder is filled into a strong kraft paper box or corrugated paper box and pressed into a blank. Then, it is pressed more densely by a high-pressure isostatic press of 50 - 300 MPa. The pressed blank needs to be put into a high-temperature furnace for firing and shaping. After firing, it is necessary to carefully check whether there are cracks. The suction cup is polished to the required thickness with a diamond grinding wheel with water cooling. At the same time, the aluminum base is machined with a precision CNC machine tool, and the flatness error cannot exceed 0.01 mm, so that it can fit tightly with the ceramic suction cup. Epoxy resin or silicone rubber is selected for bonding, and the thickness of the glue layer is controlled at 0.1 - 0.3 mm. After the glue dries, a special test equipment is used to test the adsorption performance. The motor 3 drives the threaded rod 5 to rotate, driving the clamping assembly to clamp the porous ceramic plate to rise, testing the adsorption ability of the porous ceramic plate to the copper foil at different heights. Through experiments, it is measured that when the height is 3, the air pressure of 0.5 MPa can adsorb; when the height is 3.5, the air pressure of 0.5 MPa cannot adsorb; when the height is 3, the air pressure of 0.6 MPa can adsorb; when the height is 3.5, the air pressure of 0.6 MPa can adsorb; when the height is 4, the air pressure of 0.6 MPa cannot adsorb; when the height is 3, the air pressure of 0.7 MPa can adsorb; when the height is 3.5, the air pressure of 0.7 MPa can adsorb; when the height is 4, the air pressure of 0.7 MPa can adsorb; when the height is 4.5, the air pressure of 0.7 MPa cannot adsorb. From this, it can be concluded that when the pore diameter of the porous ceramic suction cup is 30um and the air pressure is between 0.5 - 0.7, the adsorption performance to the copper foil is stable and the adsorption effect is good.

[0032] The above is only a preferred embodiment of the present invention and does not impose any formal limitations on the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention or modify it into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the present invention. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention all fall within the protection scope of this technical solution.

Claims

1. A method for manufacturing a ceramic suction cup, characterized in that: The following steps are involved: S1. Material selection: Select porous ceramic powder for paper box pressing; S2, isostatic pressing: isostatic pressing is performed on the blank after the embryo is pressed; S3, sintering: sintering the porous ceramic blank completed by isostatic pressing; S4. Process inspection: After the porous ceramic blank is fired, it is inspected to see if there is any cracking, and its performance is tested; S5, ceramic processing: use a large water mill to grind the thickness of the porous ceramic suction cup; S6. Base processing: CNC process the aluminum plate to make it compatible with the polished porous ceramic suction cup; S7, assembly and bonding: Use glue to bond the porous ceramic suction cup to the aluminum base, and prevent the glue from blocking the micropores on the ceramic suction cup; S8. Test: When the glue is completely dry, test the ceramic suction cup.

2. A method for manufacturing a ceramic suction cup according to claim 1, characterized in that: The porous ceramic powder includes pore-forming agent powder, porous precursor powder, hollow sphere ceramic powder and biological template powder, wherein the main powder particle size of the ceramic powder is 10-20um, and the gap pore size after stacking is 30um. 25-35um pore-forming agent is added for sintering, wherein the pore-forming agent accounts for 30-50%.

3. The method for making a ceramic suction cup and the adsorption experimental device thereof according to claim 1, characterized in that: The isostatic pressing includes cold isostatic pressing and wet bag isostatic pressing, and the pressure of the isostatic pressing is 50-300 MPa.

4. A method for manufacturing a ceramic suction cup according to claim 1, characterized in that: The paper box comprises kraft paper, corrugated paper, filter paper and special paper. The thickness of the kraft paper is 0.3-0.5 mm, and the thickness of the corrugated paper is 1-2 mm.

5. The method for manufacturing a ceramic suction cup according to claim 1, characterized in that: In the large water grinding process, the water flow rate is 5-10L / min, the pressure is 0.1-0.5Mpa, and step-type grinding is adopted, wherein the coarse grinding is 80-120 mesh, the fine grinding is 400-3000 mesh, and the grinding tool is a diamond grinding wheel.

6. The method for manufacturing a ceramic suction cup according to claim 1, characterized in that: When the CNC processes the aluminum base, its flatness is controlled within ±0.01 mm and the hole position accuracy is controlled within ±0.02 mm.

7. The method for manufacturing a ceramic suction cup according to claim 1, characterized in that: The glue includes epoxy resin, organic silica gel, ceramic glue, polyurethane glue, cyanoacrylate, phenolic resin or modified acrylate, and the thickness of the glue layer is 0.1-0.3 mm.

8. An adsorption experiment device for a ceramic suction cup manufacturing method according to any one of claims 1 to 7, comprising an experimental frame (1) and a copper foil for adsorption experiment, characterized in that: Also includes: A driving mechanism, the driving mechanism is arranged on the experimental frame (1), a clamping assembly is connected to the driving end of the driving mechanism, the clamping assembly is used to clamp the porous ceramic suction cup, and the driving mechanism drives the clamping assembly to move vertically upward along a horizontal plane; A vacuum control component is arranged on the experimental frame (1), an air pipe (2) is connected to the vacuum control component, one end of the air pipe (2) is connected to the porous ceramic suction cup, and the vacuum control component is used to provide suction to the porous ceramic plate to perform an adsorption experiment on the copper foil.

9. The adsorption experimental device of the ceramic suction cup manufacturing method according to claim 8, characterized in that: The driving mechanism comprises a motor (3), the motor (3) being fixedly mounted on the experimental frame (1), a sprocket (4) being fixedly mounted on the output shaft of the motor (3), two threaded rods (5) being rotatably mounted on the experimental frame (1), a sprocket (4) being fixedly mounted on one end of the two threaded rods (5), the sprockets (4) being transmission-connected via a chain (6), a movable plate (7) being threadedly connected on the two threaded rods (5), two fixed seats (8) being slidably mounted on the movable plate (7), a screw rod (9) being threadedly connected through the two fixed seats (8), a clamping arm (10) being fixedly mounted on the two fixed seats (8), a groove (11) being provided on the clamping arm (10), and a fixed handle (12) being fixedly mounted on both ends of the porous ceramic plate, the groove (11) being adapted to fit the fixed handle (12).

10. The adsorption experimental device of the ceramic suction cup manufacturing method according to claim 9, characterized in that: The vacuum control component comprises a vacuum converter, and the vacuum converter is connected to an air pipe (2), and the length of the air pipe (2) is greater than the lifting distance of the porous ceramic plate.

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